Ultrasonic cutter handle, ultrasonic machining equipment and machine tool

Abstract

The utility model discloses an ultrasonic knife handle, ultrasonic machining equipment and a machine tool, and relates to the technical field of machining equipment, the ultrasonic knife handle comprises a knife body, a transducer shell, an outer shell assembly and a wireless receiving assembly, the knife body and the transducer shell are coaxially arranged, and the knife body and the transducer shell are detachably connected to form a mounting part contracted in the transducer shell; the outer shell assembly sleeves the mounting part through a bearing; the wireless receiving assembly is arranged on the peripheral side of the cutter body, and the wireless receiving assembly is arranged on the rear side of the mounting part and communicates with the transducer in the transducer shell. According to the ultrasonic knife handle, the bearing is arranged on the installation part in the sleeving mode, the specification size of the bearing can be effectively reduced, the linear speed of the inner ring of the bearing can be effectively reduced under the condition that the ultrasonic knife handle rotates at a high speed, and therefore the heating value of the bearing is reduced, and the service life of the bearing is prolonged; the problem that an existing ultrasonic knife handle needs frequent maintenance and bearing replacement is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to machining equipment technical field, especially a kind of ultrasonic tool holder, ultrasonic machining equipment and machine tool. BACKGROUND

[0002] Ultrasonic machining, generally by ultrasonic generator to ultrasonic tool holder applies voltage or current, so that the ultrasonic vibration element therein carries out high-frequency ultrasonic vibration, and drives the tool installed on ultrasonic tool holder to vibrate, to carry out processing.

[0003] At present, the power supply mode of ultrasonic tool holder mainly includes contact type and non-contact type, wherein, non-contact type generally adopts wireless transmission structure power supply, through the mutual cooperation of the transmitting unit and receiving unit of wireless transmission structure, when the transmitting unit passes into alternating current, the transmitting unit generates induced magnetic field, magnetic flux line circulates between transmitting unit and receiving unit, realizes the inductive intercommunication of transmitting unit and receiving unit, and then provides high-frequency vibration energy source for ultrasonic machining device. Compared with contact power supply mode, non-contact power supply mode can reduce the heat generated by ultrasonic tool holder in the working process, especially suitable for the scene of high-speed rotation of ultrasonic tool holder (the rotating speed of tool reaches 20-40 thousand revolutions per minute).

[0004] The transducer of ultrasonic tool holder is easy to heat in the process of high-power output, and the overheated transducer needs to be stopped and cooled, which causes the ultrasonic tool holder to be unable to work normally, therefore, some existing ultrasonic tool holders increase the shell body with cooling structure outside the transducer, to reduce the heat generated by the transducer in the process of high-power output. Or set the shell body with corresponding function to prevent falling and dust, generally, the shell body structure of ultrasonic tool holder is connected to the outer periphery of transducer shell body through bearing, which causes the size of bearing to be large, in this way, in the case of high-speed rotation of ultrasonic tool holder, the linear speed of inner ring of bearing is high, which causes bearing to generate a large amount of heat, and causes bearing to heat seriously, which affects the service life of bearing, and further causes the ultrasonic tool holder to need frequent maintenance and bearing replacement. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of ultrasonic tool holder, ultrasonic machining equipment and machine tool, by optimizing the assembly structure of cooling structure, reduce the outer diameter of bearing, to solve the problem of existing ultrasonic tool holder needing frequent maintenance and bearing replacement.

[0006] In order to realize the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] An ultrasonic tool holder, comprising a tool body, a transducer shell, an outer shell assembly and a wireless receiving assembly, wherein,

[0008] The blade body is coaxially arranged with the transducer shell, and the blade body is detachably connected with the transducer shell and forms a mounting portion retracted in the transducer shell, and the outer shell assembly is sleeved on the mounting portion through a bearing;

[0009] The wireless receiving assembly is arranged on the outer circumferential side of the blade body, and is arranged on the rear side of the mounting portion and electrically connected with the transducer in the transducer shell.

[0010] In some embodiments, the blade body has a body portion and a first protruding portion located at the front end of the body portion, the outer diameter of the first protruding portion is smaller than the outer diameter of the body portion adjacent to the mounting portion, and the transducer shell has a shell portion and a second protruding portion located at the rear end of the shell portion, the outer diameter of the second protruding portion is smaller than the outer diameter of the shell portion adjacent to the mounting portion, and the second protruding portion is nestedly connected with the first protruding portion, so that the first protruding portion and the second protruding portion form the mounting portion; the bearing is sleeved on the first protruding portion.

[0011] In some embodiments, a first electrical connection channel is arranged in the blade body, the first electrical connection channel penetrates to the outside of the blade body to communicate with the wireless receiving assembly; and,

[0012] A second electrical connection channel is arranged in the mounting portion, one end of the second electrical connection channel communicates with the first electrical connection channel, so that the first electrical connection channel and the second electrical connection channel form an electrical connection passage.

[0013] In some embodiments, the blade body has a first protruding portion extending towards the front end, the transducer shell has a second protruding portion extending towards the rear end, the second protruding portion is embedded in the first protruding portion, so that the first protruding portion and the second protruding portion form the mounting portion, and,

[0014] The second electrical connection channel is arranged in the first protruding portion and penetrates to the front end of the blade body; the first electrical connection channel communicates with the rear end of the second electrical connection channel; and,

[0015] A third electrical connection channel is arranged in the transducer shell, the third electrical connection channel communicates with the second electrical connection channel and communicates with the transducer.

[0016] In some embodiments, the ultrasonic knife handle comprises a first conductive member and a second conductive member, wherein the first conductive member is arranged in the second electrical connection channel and electrically connected with the wireless receiving assembly; the second conductive member is arranged in the third electrical connection channel and can form a plug-in fit with the first conductive member, and the second conductive member is electrically connected with the transducer.

[0017] In some embodiments, the transducer housing is provided with an insulating member arranged at least on the outer circumferential side of the transducer and spaced apart from the transducer; and,

[0018] The insulating member is provided with a wire slot on the outer side thereof, and the wire slot is in communication with the inner side of the insulating member.

[0019] In some embodiments, the transducer comprises a piezoelectric vibrator, the insulating member extends to the rear end of the piezoelectric vibrator, and,

[0020] The wire slot extends from the rear end of the piezoelectric vibrator to the outer circumferential side of the piezoelectric vibrator, and the projections of the first and second conductive members in the front-rear direction are located in the wire slot.

[0021] In some embodiments, the transducer housing is provided with an inner cavity for accommodating the transducer, the inner cavity is in communication with the external environment; and the outer housing assembly is provided with a first cooling gas path in communication with an external cooling gas source, the first cooling gas path is in communication with the inner cavity.

[0022] In some embodiments, a sealing cover plate is mounted on the outer side of the transducer housing, the sealing cover plate is arranged on the front side of the bearing and located on the rear side of the inner cavity, and the outer housing assembly extends to the outer circumferential side of the transducer housing, so that the transducer housing, the sealing cover plate and the outer housing assembly form a first channel, and the first cooling gas path is in communication with the inner cavity through the first channel.

[0023] In some embodiments, the first channel is provided with an airflow turbine, and the airflow turbine is fixed relative to the transducer housing, so that the airflow turbine rotates synchronously with the transducer housing, thereby driving the airflow in the first channel to enter the inside of the transducer housing.

[0024] In some embodiments, the transducer housing is provided with a plurality of air inlet holes penetrating to the inner cavity at one end thereof towards the sealing cover plate, the airflow turbine comprises a plurality of turbine blades, and the plurality of turbine blades are spaced apart along the circumference of the transducer housing, and there is at least one air inlet hole between adjacent two turbine blades.

[0025] In some embodiments, the airflow turbine is integrally formed with the sealing cover plate.

[0026] In some embodiments, the outer housing assembly comprises a bearing sleeve and an airflow seat, wherein,

[0027] The bearing sleeve is connected to the outer ring of the bearing, and extends to the outer circumferential side of the transducer housing, and the bearing sleeve, the transducer housing and the sealing cover plate form the first channel;

[0028] The airflow seat is connected to the outer circumferential side of the bearing sleeve, and forms a second channel with the bearing sleeve, the second channel communicates with the first channel, and the airflow seat is provided with a first air inlet channel communicating with an external cooling gas source, the first air inlet channel and the second channel communicate in sequence to form the first cooling gas path.

[0029] In some embodiments, a flow guide is arranged in the second channel, the flow guide is provided with a flow guide air groove communicating with the second channel, and the flow guide air groove is arranged in an axial direction of a spiral arrangement in the front-rear direction, and is arranged in a spiral on the outer surface side of the flow guide.

[0030] In some embodiments, the sealing cover plate, the outer housing assembly and the bearing form a gap space, and a sealing fit is arranged between the first channel and the gap space to separate the first channel and the gap space.

[0031] In some embodiments, the outer housing assembly is provided with a pressure relief hole communicating with the gap space, and the pressure relief hole communicates to the outside of the outer housing assembly to discharge the gas in the gap space.

[0032] In some embodiments, an insulating member is arranged in the transducer housing, the insulating member is arranged at least on the outer circumferential side of the transducer and is arranged in a spaced manner with the transducer, so that a cooling channel is formed between the insulating member and the transducer, and the cooling channel communicates with the inner cavity.

[0033] In some embodiments, one end of the transducer housing facing the bearing is provided with an air inlet hole penetrating into the inner cavity, the transducer housing is provided with an air outlet hole arranged in a penetrating manner on the circumferential side, the air inlet hole and the air outlet hole communicate with the cooling channel; and the outer circumferential side of the transducer housing has a circular cross-sectional profile, and the air outlet hole is arranged in a tangential direction of the circle.

[0034] In some embodiments, the transducer housing is connected with a horn at the front end, the front end of the horn is used to connect a cutter; and,

[0035] The outer housing assembly is provided with a first air guide pipe, a second air guide pipe, and a second air inlet channel communicating with an external cooling gas source, wherein the first air guide pipe is arranged in the front-rear direction, the second air guide pipe is arranged in the circumferential direction of the horn, and the second air inlet channel, the first air guide pipe and the second air guide pipe communicate in sequence to form a second cooling gas path, and

[0036] A nozzle for cooling the tool is arranged along the arrangement path of the second air guide pipe and communicates with the second air guide pipe.

[0037] In some embodiments, the outer housing assembly comprises a first sleeve and a second sleeve, the first sleeve is arranged at the outer circumferential side of the transducer housing, and the second sleeve is arranged at the outer circumferential side of the first sleeve, so that a third passage accommodating the first air guide pipe and the second air guide pipe is formed between the second sleeve and the first sleeve, and a jet port communicating with the nozzle is formed on the third passage, and the second air guide pipe communicates with the nozzle through the jet port.

[0038] In some embodiments, the outer housing assembly is further provided with a first cooling air path communicating with the inside of the transducer housing, a fourth passage is formed between the first sleeve and the transducer housing, and an exhaust port facing the front side is formed between the transducer housing and the variable amplitude rod; the inside of the transducer housing, the exhaust hole on the transducer housing, the fourth passage and the exhaust port are sequentially communicated, and the first cooling air path and the second cooling air path are independently arranged.

[0039] In some embodiments, the third passage is filled with a heat preservation material to form a heat preservation layer covering the first air guide pipe and the second air guide pipe.

[0040] In some embodiments, the outer circumferential side of the tool body is fixedly connected with a receiving groove, the wireless receiving assembly is arranged in the receiving groove, and a positioning groove is formed on the outer circumferential side of the receiving groove; and

[0041] The outer housing assembly is provided with a first positioning assembly and a second positioning assembly which can move relative to the outer housing assembly, the movement of the second positioning assembly relative to the outer housing assembly can drive the first positioning assembly to act, so that the first positioning assembly extends into the positioning groove, so that the receiving groove and the outer housing assembly are relatively stationary; and the first positioning assembly can be driven to be pulled out of the positioning groove, so that the receiving groove and the outer housing assembly can be relatively rotated.

[0042] In some embodiments, the first positioning assembly comprises a swing block, the swing block is rotationally connected with the outer housing assembly to reciprocally approach or move away from the receiving groove, so that the swing block extends into the positioning groove or the swing block is pulled out of the positioning groove.

[0043] In some embodiments, the first positioning assembly further comprises a sliding block, the sliding block is configured to reciprocally move towards the tool body on the outer circumferential side of the tool body; and

[0044] The swing block is rotationally connected to the slider away from the receiving groove body, and the slider is abutted to the second positioning assembly away from the cutter body, so that the slider is driven to be close to the cutter body, and the swing block is driven to rotate, so that the other end of the swing block is out of the positioning groove.

[0045] In some embodiments, a first elastic member is further arranged on the outer housing assembly, and one end of the first elastic member is abutted to the end of the slider close to the cutter body, and the other end of the first elastic member is fixedly arranged.

[0046] The end of the slider close to the second positioning assembly is rotationally connected with a pulley, and the outer edge of the pulley extends to the outside of the slider, so that the pulley is in rolling contact with the second positioning assembly, so that the second positioning assembly can drive the slider to be close to the cutter body through the pulley.

[0047] In some embodiments, the second positioning assembly comprises a positioning column capable of moving along the axial direction of the cutter body, and the end of the slider away from the cutter body can be abutted to the positioning column to drive the swing block to be out of the positioning groove.

[0048] The second positioning assembly further comprises a limiting block connected to the front end of the positioning column, and the limiting block is provided with a clearance recessed towards the inside of the limiting block, so that the slider can be away from the cutter body and extend into the clearance, thereby driving the swing block to rotate and drive the swing block to extend into the positioning groove.

[0049] In some embodiments, the outer circumferential side of the limiting block is provided with an inclined surface inclined to the axial direction of the cutter body, the inclined surface is arranged at the rear side of the clearance and continues to the outer circumferential surface of the positioning column, and the inclined surface gradually converges towards the front side of the limiting block and communicates into the clearance.

[0050] In some embodiments, a second elastic member is further arranged on the outer housing assembly, one end of the second elastic member is abutted to the front end of the second positioning assembly, and the other end of the second elastic member is fixedly arranged.

[0051] In some embodiments, a first mounting groove, a second mounting groove and a third mounting groove are arranged in the outer housing assembly, wherein,

[0052] The first mounting groove is arranged extending towards the cutter body at the outer circumferential side of the cutter body, and the slider can reciprocate in the first mounting groove;

[0053] The second installation groove is arranged along the axial direction of the cutter body, and the front end of the second installation groove is communicated with the first installation groove, and the rear end of the second installation groove is communicated with the positioning groove; the swing block is rotationally connected in the second installation groove, and the rear end of the swing block extends out of the second installation groove;

[0054] The third installation groove is arranged along the axial direction of the cutter body, and the second positioning assembly reciprocally moves in the third installation groove, and the end of the first installation groove away from the cutter body is communicated with the third installation groove, so that the sliding block can extend out of the first installation groove and into the third installation groove.

[0055] Based on the foregoing ultrasonic cutter handle, the utility model further provides an ultrasonic machining equipment, including foregoing ultrasonic cutter handle.

[0056] Based on the foregoing ultrasonic machining equipment, the utility model further provides a machine tool, including machine tool body, main shaft being arranged on machine tool body and foregoing ultrasonic machining equipment.

[0057] The ultrasonic cutter handle, the ultrasonic machining equipment and the machine tool provided by the utility model have the following beneficial effects compared with the prior art:

[0058] The ultrasonic cutter handle of the utility model is connected with the transducer shell in a detachable mode, thereby forming an installation portion at the connecting position of the cutter body and the transducer shell, the installation portion is retracted in the transducer shell, the outer diameter of the installation portion is smaller than the outer diameter of the transducer shell adjacent to the installation portion, the bearing is sleeved on the installation portion, the size of the bearing can be effectively reduced, the linear velocity of the inner ring of the bearing can be effectively reduced in the case of high-speed rotation of the ultrasonic cutter handle, the heat generation of the bearing is reduced, the service life of the bearing is improved, and the problem that the existing ultrasonic cutter handle needs to be frequently repaired and the bearing needs to be replaced is solved.

[0059] Moreover, the ultrasonic cutter handle of the utility model is provided with an electrical connection channel in the cutter body and the installation portion, the wireless receiving assembly can be installed on the cutter body and in conduction with the transducer, the electrical connection channel can ensure that the wire between the wireless receiving assembly and the transducer is not affected by the high-speed rotation of the ultrasonic cutter handle, the wire does not interfere with the shell assembly and the bearing, and the normal work of the ultrasonic cutter handle is affected.

[0060] Moreover, the ultrasonic cutter handle of the utility model is provided with the first air inlet channel and the second air inlet channel which are independent of each other, the first cooling air path and the second cooling air path are independent of each other and do not interfere with each other, the ultrasonic cutter handle of the utility model can independently supply air to the transducer and the cutter according to the heat generation of the transducer and the cutter by using the first cooling air path and the second cooling air path, and the independent cooling of the transducer and the cutter is realized.

[0061] And, the ultrasonic knife handle is provided with the limiting structure, so that the ultrasonic knife handle can be inserted into the positioning groove through the first positioning assembly in the case of being separated from the main shaft, the relative position of the cutter body and the outer shell assembly is fixed, so that the cutter body and the outer shell assembly keep relatively static, and when the ultrasonic knife handle is connected to the main shaft, the limiting structure can be unlocked from the positioning groove, so that the cutter body and the transducer shell can rotate relative to the outer shell assembly, and the normal work of the ultrasonic knife handle is not affected.

[0062] The utility model also provides a kind of ultrasonic machining equipment and machine tool, and the ultrasonic machining equipment and machine tool apply preceding ultrasonic knife handle, and have the beneficial effects of preceding ultrasonic knife handle. BRIEF DESCRIPTION OF DRAWINGS

[0063] Figure 1 It is the schematic diagram of ultrasonic knife handle in the utility model embodiment;

[0064] Figure 2 It is the first kind of cooperation schematic diagram of knife handle and transducer shell in the utility model embodiment;

[0065] Figure 3 It is the second kind of cooperation schematic diagram of knife handle and transducer shell in the utility model embodiment;

[0066] Figure 4 It is Figure 3 The schematic diagram of transducer shell in the structure shown;

[0067] Figure 5 It is the plan view of ultrasonic knife handle in the utility model embodiment, and the position of A-A section line is indicated;

[0068] Figure 6 It is the section view of A-A in Figure 5 ;

[0069] Figure 7 It is the enlarged view of B in Figure 6 ;

[0070] Figure 8 It is the enlarged view of C in Figure 6 ;

[0071] Figure 9 It is the enlarged view of D in Figure 6 ;

[0072] Figure 10 It is the schematic diagram of insulating piece in the utility model embodiment;

[0073] Figure 11 It is the airflow path schematic diagram of structure shown in Figure 6 ;

[0074] Figure 12is a schematic view of a flow guide in the embodiment of the present application;

[0075] Figure 13 is a schematic view of an airflow turbine in the embodiment of the present application;

[0076] Figure 14 is Figure 6 is a schematic view of a transducer housing in the structure shown in the figure;

[0077] Figure 15 is a top view of the ultrasonic knife handle in the embodiment of the present application, indicating the position of the E-E section line;

[0078] Figure 16 is Figure 15 is a sectional view of E-E in the figure;

[0079] Figure 17 is Figure 16 is an enlarged view of F in the figure;

[0080] Figure 18 is a schematic view of the second housing in the embodiment of the present application;

[0081] Figure 19 is Figure 17 is a schematic view of the airflow path of the structure shown in the figure;

[0082] Figure 20 is a top view of the ultrasonic knife handle in the embodiment of the present application, indicating the position of the G-G section line;

[0083] Figure 21 is Figure 20 is a sectional view of G-G in the figure;

[0084] Figure 22 is Figure 21 is an enlarged view of H in the figure;

[0085] Figure 23 is a schematic view of the second positioning assembly in the embodiment of the present application;

[0086] Figure 24 is a sectional schematic view of the airflow seat in the embodiment of the present application.

[0087] In the figure, 100, ultrasonic knife handle;

[0088] 1, cutter body; 1a, first protruding part; 1a1, first mounting hole; 1a10, limiting ring; 1b, body part; 2, transducer assembly; 2a, transducer shell; 2a1, inner cavity; 2a2, shell part; 2a3, second protruding part; 2a4, second mounting hole; 2a40, large diameter section; 2a41, small diameter section; 2b, transducer; 2b1, piezoelectric vibrator; 3, wireless receiving assembly; 3a, receiving magnet; 4, mounting part; 5, outer shell assembly; 5a, bearing outer sleeve; 5b, air flow seat; 6, first electric connection channel; 7, second electric connection channel; 8, bearing; 9, first conductive part; 10, second conductive part; 11, third electric connection channel; 12, insulating part; 13, cooling channel; 14, first cooling air path; 14a, first channel; 14b, second channel; 14c, first air inlet channel; 15, wire groove; 16, third cooling air path; 16a, air inlet hole; 16b, air outlet hole; 17, flow guide part; 18, flow guide air groove; 19, air flow turbine; 19a, turbine blade; 20, gap space; 21, bearing gland; 22, pressure relief hole; 23, first sleeve shell; 24, fourth channel; 24a, air outlet; 25, second sleeve shell; 26, third channel; 26a, air jet outlet; 27, second cooling air path; 27a, second air inlet channel; 28, nozzle; 29, first air guide pipe; 30, second air guide pipe; 31, receiving groove; 32, positioning groove; 33, first positioning assembly; 33a, swing block; 33b, sliding block; 34, second positioning assembly; 34a, positioning column; 34b, limiting block; 34b1, empty space; 34b10, inclined surface; 35, first mounting groove; 36, second mounting groove; 37, first elastic part; 38, third mounting groove; 39, pulley; 40, second elastic part; 41, locking part; 42, amplitude varying rod; 43, cutter; 44, sealing cover plate. DETAILED DESCRIPTION

[0089] The specific embodiments of the present application will be further described in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0090] In the description of the utility model, it should be understood that when the element is referred to as "fixed to" or "set to" another element, it can be directly on another element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to another element or indirectly connected to the other element. The terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0091] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "height", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like in the utility model are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0092] In the description of the utility model, it should be understood that the terms "first", "second" in the utility model are only used for description purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features.

[0093] Embodiment

[0094] Reference Figures 1-24 The embodiment of the utility model provides a kind of ultrasonic knife handle 100, wherein the end side of ultrasonic knife handle 100 connection machining tool is front side / front end / front, and the other end side opposite thereto is back side / back end / back, ultrasonic knife handle 100 includes tool body 1, transducer assembly 2 and wireless receiving assembly 3, wherein tool body 1 is generally used to be connected with the spindle of machine tool, transducer assembly 2 includes transducer shell 2a and transducer 2b, transducer shell 2a is provided with inner cavity 2a1 in it, to accommodate transducer 2b. Tool body 1 is detachably connected with transducer shell 2a, and installation part 4 is formed in the retraction of transducer shell 2a.

[0095] The ultrasonic knife handle 100 of the present embodiment adopts a wireless transmission assembly to realize the transmission of electrical signals. The wireless transmission assembly generally comprises a wireless transmitting assembly (not shown in the figure) and a wireless receiving assembly 3. As an example, the wireless transmitting assembly generally has a transmitting magnet and a transmitting coil, the transmitting coil is arranged in the transmitting magnet, and by passing an electrical signal into the transmitting coil, the transmitting magnet can generate a magnetic field. The wireless receiving assembly 3 generally has a receiving magnet and a receiving coil (not shown in the figure), the receiving magnet receives the magnetic field generated by the transmitting magnet, and based on the magneto-inductive effect, the receiving coil generates an electric current.

[0096] It should be noted that in the prior art, the handle body of the ultrasonic knife handle using wireless transmission for electrical signal transmission is generally a one-piece structure. In the present application, considering factors such as dust prevention, drop prevention, and transducer cooling, the ultrasonic knife handle 100 is provided with an outer shell assembly 5 on the outer periphery of the handle body, which is used to cover part of the structure of the handle body or to install a cooling gas path. The outer shell assembly 5 is sleeved on the outer periphery of the handle body through a bearing 8. In the case of high-speed rotation of the ultrasonic knife handle 100, the heating problem of the bearing 8 needs to be considered. Therefore, the ultrasonic knife handle 100 sleeves the bearing 8 on the mounting portion 4 formed by the detachable connection of the knife body 1 and the transducer shell 2a, and the size of the mounting portion 4 is smaller than the size of the transducer shell 2a adjacent to the mounting portion 4. In this way, not only can the size of the bearing 8 be reduced to reduce the heating of the bearing 8, but also the size of the transducer 2b will not be affected. The design of the ultrasonic knife handle 100 will be described in detail one by one as follows.

[0097] It can be understood that the transducer 2b generally comprises a piezoelectric vibrator 2b1 for converting electromagnetic energy into mechanical energy. The amplitude horn 42 installed at the front end of the transducer 2b is a component for amplifying the mechanical amplitude. Generally, the piezoelectric vibrator 2b1 is installed in the inner cavity 2a1, and the amplitude horn 42 extends from the inner cavity 2a1 to the front side of the transducer assembly 2 and is connected with the machining tool 43. The specific working principle of the transducer 2b belongs to the existing design, which will not be described here. However, it should be noted that the performance of the transducer assembly 2 is closely related to the size of the transducer 2b, such as the size of the piezoelectric vibrator 2b1. Since the piezoelectric vibrator 2b1 is installed inside the inner cavity 2a1 of the transducer shell 2a, generally, the size of the inner cavity 2a1 inside the transducer shell 2a also reflects the performance of the transducer assembly 2. Changing the size of the inner cavity 2a1 will affect the performance of the transducer assembly 2, such as the output power.

[0098] It should be noted that the detachable connection between the blade body 1 and the transducer shell 2a can be achieved in various ways, and the installation portion 4 can also be formed in various ways. Generally, the installation portion 4 is formed at the connection position of the blade body 1 and the transducer shell 2a, and only needs to ensure that the blade body 1 and the transducer shell 2a can be detachably connected. For example, in the first preset case, part of the structure of the blade body 1 and part of the structure of the transducer shell 2a are detachably connected to form the installation portion 4. At this time, the installation portion 4 includes part of the structure of the blade body 1 and part of the structure of the transducer shell 2a. Of course, in this preset case, since the installation portion 4 includes part of the structure of the blade body 1, the layout of the installation portion 4 shrinking in the transducer shell 2a will be that the outer diameter of the installation portion 4 is smaller than the outer diameter of other parts of the transducer shell 2a adjacent to the installation portion 4.

[0099] Alternatively, in the second preset case, the front end of the blade body 1 is provided with a detachable connection structure, and the rear end of the transducer shell 2a is also provided with a detachable connection structure. The two connection structures are detachably connected to each other, and the detachable connection between the blade body 1 and the transducer shell 2a can also be achieved to form the installation portion 4. Of course, in this preset case, the connection structure is an additional structure independent of the blade body 1 and the transducer shell 2a. The layout of the installation portion 4 shrinking in the transducer shell 2a will be that the outer diameter of the connection structure is smaller than the outer diameter of the transducer shell 2a adjacent to the installation portion 4.

[0100] Alternatively, in the third preset case, the front end of the blade body 1 or the rear end of the transducer shell 2a is provided with a detachable connection structure. The connection structure and the transducer shell 2a or the blade body 1 without the connection structure are detachably connected to each other, and the detachable connection between the blade body 1 and the transducer shell 2a can also be achieved to form the installation portion 4. In this preset case, the connection structure is also an additional structure independent of the blade body 1 and the transducer shell 2a. The layout of the installation portion 4 shrinking in the transducer shell 2a will be that the outer diameter of the connection structure is smaller than the outer diameter of the transducer shell 2a adjacent to the installation portion 4.

[0101] The ultrasonic knife handle 100 of the present embodiment will be further described below taking the first preset case as an example.

[0102] Reference Figures 2-4As an example of the present embodiment, the transducer shell 2a is a cylindrical structure, which includes a shell part 2a2 and a second protruding part 2a3 arranged in sequence along the axial direction of the shell part 2a2, wherein the shell part 2a2 is located in front of the second protruding part 2a3, and the shell part 2a2 is provided with an inner cavity 2a1 for accommodating the transducer 2b; the second protruding part 2a3 extends towards the rear end of the transducer shell 2a, and the outer diameter of the second protruding part 2a3 is smaller than the outer diameter of the shell part 2a2, so that the second protruding part 2a3 forms a structure protruding from the rear side of the shell part 2a2. In this way, the inner cavity 2a1 is always arranged in the shell part 2a2, and the size of the second protruding part 2a3 does not affect the size of the inner cavity 2a1, so that the performance of the transducer 2b can be guaranteed.

[0103] The cutter body 1 is coaxially arranged with the transducer shell 2a, and the cutter body 1 has a first protruding part 1a and a body part 1b arranged in sequence along the axial direction of the cutter body 1, wherein the body part 1b is the main structure of the cutter body 1 and is used to connect the main shaft of the machining tool, and the first protruding part 1a is located in front of the body part 1b, and the outer diameter of the first protruding part 1a is smaller than the outer diameter of the part of the body part 1b adjacent to the mounting part 4. The first protruding part 1a and the second protruding part 2a3 are detachably connected, and then the cutter body 1 and the transducer shell 2a are detachably connected, so that the mounting part 4 is formed at the connection between the first protruding part 1a and the second protruding part 2a3.

[0104] It can be understood that the cutter body 1 of the present embodiment is a shaft structure. Since the cutter body 1 is coaxially arranged with the transducer shell 2a, and the first protruding part 1a of the cutter body 1 is connected with the second protruding part 2a3 of the transducer shell 2a, when the present ultrasonic cutter handle 100 is applied to process materials, the body part 1b of the cutter body 1 is connected with the main shaft of the machining tool, so that the cutter body 1 can be driven to rotate by the main shaft, so that the transducer assembly 2 and the machining tool 43 connected to the first protruding part 1a can be synchronously rotated to perform machining actions.

[0105] It should be noted that the first protruding part 1a and the body part 1b divided by the cutter body 1, and the shell part 2a2 and the second protruding part 2a3 divided by the transducer shell 2a are only used to illustrate the cooperation mode of the detachable connection of the cutter body 1 and the transducer shell 2a, and the shell part 2a2 and the second protruding part 2a3, and the body part 1b and the first protruding part 1a are not limited to an integral structure. In other predetermined cases, the shell part 2a2 and the second protruding part 2a3, and the body part 1b and the first protruding part 1a can also be a two-segment structure. In specific applications, the structure of the cutter body 1 and the transducer shell 2a can be selected to adopt an integral connection structure or a segmented structure according to the application scenario.

[0106] It should be noted that the mounting part 4 formed by the nesting cooperation of the first protruding part 1a and the second protruding part 2a3 has at least two implementation modes:

[0107] First, with reference to Figure 2 , the outer diameter of the first protruding portion 1a is greater than the outer diameter of the second protruding portion 2a3, a first mounting hole 1a1 is provided in the tool body 1 and penetrates the first protruding portion 1a and the body portion 1b in the axial direction (i.e. the front-rear direction) of the tool body 1, and the inner wall of the first mounting hole 1a1 is protruded towards the inside of the first mounting hole 1a1 to form a limiting ring 1a10; the second protruding portion 2a3 extends towards the rear side in the axial direction of the tool body 1, and a second mounting hole 2a4 is provided in the second protruding portion 2a3 and extends in the axial direction of the tool body 1, the second protruding portion 2a3 extends into the first mounting hole 1a1 and is located in front of the limiting ring 1a10, the position of the second protruding portion 2a3 in the axial direction of the tool body 1 is limited by the limiting ring 1a10, so that the second protruding portion 2a3 is mounted in the first mounting hole 1a1, and the first protruding portion 1a is wrapped around the outer circumferential side of the second protruding portion 2a3, thereby forming the connection between the second protruding portion 2a3 and the first protruding portion 1a, i.e. the mounting portion 4;

[0108] Second, with reference to Figures 3-4 , the outer diameter of the first protruding portion 1a is less than the outer diameter of the second protruding portion 2a3, the first protruding portion 1a extends towards the front side in the axial direction of the tool body 1, and a first mounting hole 1a1 is provided in the tool body 1 and penetrates the first protruding portion 1a and the body portion 1b in the axial direction of the tool body 1; and the second protruding portion 2a3 extends towards the rear side in the axial direction of the tool body 1, and the transducer shell 2a is provided with a second mounting hole 2a4 extending in the axial direction of the tool body 1, the second mounting hole 2a4 is a stepped hole including a large-diameter section 2a40 and a small-diameter section 2a41 which are in communication with each other, the first protruding portion 1a is mounted in the large-diameter section 2a40 of the second mounting hole 2a4, so that the second protruding portion 2a3 is wrapped around the outer circumferential side of the first protruding portion 1a, and the connection between the second protruding portion 2a3 and the first protruding portion 1a, i.e. the mounting portion 4, is formed.

[0109] In the working process of the ultrasonic knife handle 100 in the present embodiment, the tool body 1 can drive the transducer shell 2a to rotate and lift, so the tool body 1 and the transducer shell 2a need to be locked and fixed in the axial direction of the tool body 1. Therefore, in the present embodiment, Figure 2 , 6In the structure shown in Figure -9, as an example of this embodiment, a locking member 41 is provided in the first mounting hole 1a1. The locking member 41 passes through the limiting ring 1a10 along the axial direction of the blade body 1, extends into the second mounting hole 2a4, and is tightly connected to the second protrusion 2a3 of the transducer housing 2a, so as to realize the detachable connection between the first protrusion 1a and the second protrusion 2a3. Furthermore, the outer peripheral surface of the second protrusion 2a3 can be set as a conical surface, and correspondingly, the inner peripheral surface of the first protrusion 1a is also set as a conical surface. In this way, when the locking member 41 locks the first protrusion 1a and the second protrusion 2a3, the outer peripheral surface of the second protrusion 2a3 can be tightly fitted with the inner peripheral surface of the first protrusion 1a, so that the first protrusion 1a and the second protrusion 2a3 are tightly connected.

[0110] Of course, in Figures 3-4 In the structure shown, the locking member 41 has a different engagement method with the first protrusion 1a and the second protrusion 2a3. (Reference) Figures 3-4 7. As an example of this embodiment, a locking member 41 is provided in the first mounting hole 1a1. The locking member 41 penetrates the first protrusion 1a along the axial direction of the blade body 1 and extends into the small-diameter section 2a41 of the second mounting hole 2a4, and is tightly connected to the second protrusion 2a3 to achieve a detachable connection between the first protrusion 1a and the second protrusion 2a3. At this time, the outer peripheral surface of the first protrusion 1a can be set as a conical surface. Correspondingly, the inner peripheral surface of the large-diameter section 2a40 of the second mounting hole 2a4 is also set as a conical surface. In this way, when the locking member 41 locks the first protrusion 1a and the second protrusion 2a3, the outer peripheral surface of the first protrusion 1a can be tightly fitted with the inner peripheral surface of the large-diameter section 2a40 of the second mounting hole 2a4, so that the first protrusion 1a and the second protrusion 2a3 are tightly connected.

[0111] Of course, the locking member 41 can also be installed in the second mounting hole 2a4, but it is more complicated to disassemble than when it is installed in the first mounting hole 1a1. Since the transducer 2b is installed in the inner cavity 2a1 of the housing 2a2, if the locking member 41 is set in the second mounting hole 2a4 on the transducer housing 2a side, when it is necessary to disassemble the blade 1 from the transducer housing 2a, the transducer 2b must be removed first, and then the locking member 41 must be loosened from the second mounting hole 2a4 to disassemble the blade 1 from the transducer housing 2a. However, if the locking member 41 is installed in the first mounting hole 1a1 on the blade 1 side, when the ultrasonic scalpel 100 is removed from the spindle, the locking member 41 can be loosened directly to disassemble the blade 1 from the transducer housing 2a.

[0112] It should be noted that the mounting portion 4 formed in different cases will always shrink in the transducer shell 2a, that is, the outer diameter of the mounting portion 4 will be smaller than the outer diameter of the transducer shell 2a at other positions adjacent to the mounting portion 4, so that the mutually connected blade body 1 and the transducer shell 2a present a profile recessed from the outer surface at the position of the mounting portion 4. In this way, the position of the mounting portion 4 will generally form a mounting space, such as an annular groove. By using this annular groove, the ultrasonic knife handle 100 is sleeved with a bearing 8 on the mounting portion 4, and an outer shell assembly 5 is sleeved on the bearing 8, which is arranged on the outer circumferential side of the knife handle body. With the cooperation of the outer shell assembly 5, the dustproof effect and the anti-falling effect of the transducer shell 2a and the transducer 2b can be improved, and the transducer shell 2a and the transducer 2b inside it are protected from external influences.

[0113] The ultrasonic knife handle 100 of the embodiment adopts a wireless transmission assembly to realize electrical signal transmission. The wireless transmitting assembly and the wireless receiving assembly 3 are generally arranged in a cooperation mode of up and down or in a cooperation mode of inside and outside. Referring to Figures 6-24 The ultrasonic knife handle 100 of the embodiment continues to be described in the cooperation mode of up and down of the wireless transmitting assembly and the wireless receiving assembly 3.

[0114] Since the wireless transmitting assembly and the wireless receiving assembly 3 need to be relatively arranged and close to each other when the wireless transmission assembly is operating, if the wireless receiving assembly 3 is arranged on the mounting portion 4, it may hinder the cooperation of the wireless transmitting assembly. Therefore, the ultrasonic knife handle 100 of the embodiment sets the wireless receiving assembly 3 on the body portion 1b, at the outer circumferential side of the blade body 1, and arranges it on the rear side of the mounting portion 4. By connecting the wireless receiving assembly 3 to the transducer 2b in the transducer shell 2a, the wireless transmission assembly can transmit electrical signals to the transducer 2b, so that the transducer 2b works.

[0115] It should be noted that the wireless receiving assembly 3 is connected to the outer circumferential side of the body portion 1b and will rotate with the rotation of the blade body 1, so the wireless receiving assembly 3 and the outer shell assembly 5 are not attached to each other, and a certain gap is generally reserved between the front side of the wireless receiving assembly 3 and the rear side of the outer shell assembly 5.

[0116] It should be noted that since the wireless receiving assembly 3 is arranged on the rear side of the mounting portion 4, the transducer 2b is arranged on the front side of the mounting portion 4, and the wire between the wireless receiving assembly 3 and the transducer 2b must pass through the mounting portion 4. In the case where the outer shell assembly 5 is sleeved on the mounting portion 4 through the bearing 8, the wire between the wireless receiving assembly 3 and the transducer 2b is easy to interfere with the outer shell assembly 5, causing the wire to be torn off. Therefore, referring to Figure 2As an example of the present embodiment, the first electrical connection channel 6 is arranged in the blade body 1 of the ultrasonic knife handle 100 and penetrates to the outside of the blade body 1 to communicate with the wireless receiving assembly 3. The second electrical connection channel 7 is arranged in the mounting portion 4, and one end of the second electrical connection channel 7 communicates with the first electrical connection channel 6, so that the first electrical connection channel 6 and the second electrical connection channel 7 form an electrical connection path.

[0117] It should be noted that, since the first protruding portion 1a and the second protruding portion 2a3 are usually provided with locking members 41 inside, it is inconvenient to arrange the wire channel, so the second electrical connection channel 7 is usually arranged along the axial direction of the blade body 1 and close to the outer edge of the mounting portion 4. According to different forms of the mounting portion 4, the arrangement position of the second electrical connection channel 7 will also be different. For example, in the case where the first protruding portion 1a wraps around the outer peripheral side of the second protruding portion 2a3, the second electrical connection channel 7 is arranged in the first protruding portion 1a. In the case where the second protruding portion 2a3 wraps around the outer peripheral side of the first protruding portion 1a, the second electrical connection channel 7 is arranged in the second protruding portion 2a3.

[0118] It should be noted that the electrical connection path formed by the second electrical connection channel 7 and the first electrical connection channel 6 communicates with the inner cavity 2a1 in the transducer shell 2a. The communication mode can be direct communication or indirect communication. For example, in the case where the first protruding portion 1a wraps around the outer peripheral side of the second protruding portion 2a3, the second electrical connection channel 7 is arranged in the first protruding portion 1a. At this time, the transducer shell 2a is provided with a through hole matched with the second electrical connection channel 7, so that the second electrical connection channel 7 communicates with the inner cavity 2a1 in the transducer shell 2a. Alternatively, in the case where the second protruding portion 2a3 wraps around the outer peripheral side of the first protruding portion 1a, the second electrical connection channel 7 is arranged in the second protruding portion 2a3. At this time, the first electrical connection channel 6 can be a groove structure formed at the front end of the blade body 1, so that the first electrical connection channel 6 directly communicates with the second electrical connection channel 7. The first electrical connection channel 6 can also indirectly communicate with the second electrical connection channel 7 through a hole structure or a channel structure formed in the blade body 1.

[0119] Alternatively, for example, referring to Figure 2In the case where the first protrusion 1a is wrapped around the outer circumferential side of the second protrusion 2a3, the second protrusion 2a3 is embedded in the first protrusion 1a, so that the first protrusion 1a and the second protrusion 2a3 form the mounting portion 4. At this time, the second electrical connection channel 7 is arranged in the first protrusion 1a and penetrates to the front end of the blade body 1, and the transducer housing 2a is provided with a third electrical connection channel 11 extending along the axial direction of the transducer housing 2a. The third electrical connection channel 11 is in communication with the second electrical connection channel 7 and communicates to the inside of the transducer housing 2a, i.e., the inner cavity 2a1. At this time, the electrical connection path composed of the second electrical connection channel 7 and the first electrical connection channel 6 is in communication with the inner cavity 2a1 through the third electrical connection channel 11. It should be noted that the second electrical connection channel 7 and the third electrical connection channel 11 can not extend along the axial direction. The axial extension is only one of the cases. In other ultrasonic knife handles 100, the second electrical connection channel 7 and the third electrical connection channel 11 can also be inclined to the axial direction of the blade body 1, so that the communication with the inner cavity 2a1 can also be achieved.

[0120] Considering that the blade body 1 and the transducer housing 2a are detachably connected and matched, there is a possibility of disassembly between the transducer housing 2a and the blade body 1. In order to facilitate the disassembly and assembly of the transducer housing 2a and the blade body 1, the conductive part provided in the electrical connection path and the third electrical connection channel 11 is preferably in plug-in cooperation. Referring to Figures 6-7 In the case where the ultrasonic knife handle 100 adopts the matching structure as shown in Figure 2 , the ultrasonic knife handle 100 comprises a first conductive part 9 and a second conductive part 10. The first conductive part 9 is arranged in the second electrical connection channel 7 and electrically connected with the wireless receiving assembly 3. The second conductive part 10 is arranged in the third electrical connection channel 11 and can form plug-in cooperation with the first conductive part 9, and the second conductive part 10 is electrically connected with the transducer 2a. In this way, when the transducer housing 2a and the blade body 1 are disassembled, the first conductive part 9 and the second conductive part 10 can be disassembled and moved with the blade body 1 and the transducer housing 2a, respectively. The wires between the wireless receiving assembly 3 and the first conductive part 9 and between the transducer 2b and the second conductive part 10 do not need to be broken. When the transducer housing 2a and the blade body 1 are assembled, the first conductive part 9 and the second conductive part 10 can be plugged in, so that the wireless receiving assembly 3 and the transducer 2b can be in communication.

[0121] In the case where the gap between the transducer 2b and the transducer housing 2a is small, electric sparks are easily generated inside the inner cavity 2a1. Therefore, an insulating structure can be arranged between the transducer 2b and the transducer housing 2a to prevent electric sparks. Referring to Figure 6 、 9As an example of the present embodiment, the transducer housing 2a is provided with an insulating member 12 arranged on the outer circumferential side of the transducer 2b and spaced from the transducer 2b. In order to avoid the electric wire between the transducer 2b and the wireless receiving assembly 3 from entering the gap between the transducer 2b and the transducer housing 2a and causing electric spark, the outer side of the insulating member 12 can be provided with a wire groove 15 which is communicated to the inner side of the insulating member 12 and communicated with the third electric connection passage 11 and the second electric connection passage 7. In this way, the electric wire between the transducer 2b and the wireless receiving assembly 3, after entering the inner cavity 2al, will enter the wire groove 15 and extend along the wire groove 15. At this time, the electric wire is separated from the transducer 2b by the insulating member 12, thus ensuring the safety of the electric wire arranged in the transducer housing 2a.

[0122] It should be noted that the electric wire between the transducer 2b and the wireless receiving assembly 3 is connected to the wiring port of the transducer 2b, so the electric wire can extend along the wire groove 15 to a position opposite to the wiring port and then enter the inner side of the insulating member 12 and be connected to the transducer 2b. Therefore, the position where the wire groove 15 is communicated with the inner side of the insulating member 12 is usually the position of the wiring port of the transducer 2b, which is also conducive to shortening the length of the electric wire entering the inner side of the insulating member 12 and ensuring its safety. The wire groove 15 and the inner side of the insulating member 12 can be communicated through a through-hole structure, or the wire groove 15 itself can be through to the inner side of the insulating member 12, which is not described in the drawings.

[0123] Of course, the insulating member 12 can also be wrapped to the back side of the transducer 2b. For example, the transducer 2b usually has a piezoelectric vibrator 2bl, and referring to Figure 10 , the insulating member 12 can extend to the back side of the piezoelectric vibrator 2bl, so as to wrap the piezoelectric vibrator 2bl. In this case, the wire groove 15 can extend from the back end of the piezoelectric vibrator 2bl to the outer circumferential side of the piezoelectric vibrator 2bl, and the projections of the first conductive member 9 and the second conductive member 10 in the axial direction of the tool body 1, i.e. the front-back direction, are located in the wire groove 15. Thus, the electric wire between the transducer 2b and the wireless receiving assembly 3, after entering the inner cavity 2al, can enter the wire groove 15 in the axial direction of the tool body 1 to control the length of the electric wire inside the inner cavity 2al.

[0124] In some ultrasonic knife handles 100, considering that the transducer 2b is prone to heat during work, affecting the normal work of the ultrasonic knife handle 100, therefore, the ultrasonic knife handle 100 can be provided with a cooling structure, such as the outer shell assembly 5 is also provided with a first cooling gas path 14 communicated with the external cooling gas source, and the first cooling gas path 14 is communicated with the inner cavity 2a1. By connecting the external cooling gas source to the first cooling gas path 14, the cold gas enters the inner cavity 2a1 at the rear end of the transducer 2b along the first cooling gas path 14, which can cool the transducer 2b arranged in the transducer shell 2a.

[0125] The first cooling gas path 14 is communicated with the inner cavity 2a1 at the rear end of the transducer 2b, which can make the cold gas of the first cooling gas path 14 enter the inner cavity 2a1 along the flow direction and pass through the transducer 2b along the axial direction of the knife body 1, thereby ensuring the flow rate of the cold gas in the transducer shell 2a, and timely removing the heat generated by the transducer 2b, avoiding the cold gas entering the inner cavity 2a1 from the side wall of the transducer shell 2a, and then causing flow rate loss due to the turning of the cold gas in the transducer shell 2a.

[0126] Specifically, the piezoelectric vibrator 2b1 is usually stacked in the transducer shell 2a along the axial direction of the knife body 1, so when the gas enters the inside of the transducer shell 2a through the rear end of the transducer shell 2a, the flow direction of the gas and the stacking direction of the piezoelectric vibrator 2b1 are both parallel to the axial direction of the knife body 1, and the gas can pass through the piezoelectric vibrator 2b1 along the flow direction, reducing the energy loss of the gas in the transducer shell 2a, and enabling the gas to carry away more heat from the piezoelectric vibrator 2b1.

[0127] The first cooling gas path 14 needs to be communicated with the external cooling gas source, and a gas pipe or gas channel is usually used for cooperation. In order to avoid the gas pipe or gas channel from being tangled in the case of high-speed rotation of the ultrasonic knife handle 100, the outer shell assembly 5 is generally kept stationary relative to the knife body 1 and the transducer shell 2a, so the outer shell assembly 5 uses a bearing 8 as a connecting structure for assembly, and the bearing 8 is sleeved on the outer circumferential side of the knife body 1 and / or the transducer shell 2a.

[0128] It can be understood that the rear side of the transducer shell 2a and the front side of the bearing 8 are usually spaced apart, and the two are not in close contact, which can avoid friction between the transducer shell 2a and the bearing 8 during rotation. Of course, in the case where the bearing 8 is provided with a bearing gland 21 on the front side, the rear side of the transducer shell 2a is spaced apart from the front side of the bearing gland 21, and the bearing gland 21 can limit and seal the bearing 8. Therefore, the first cooling gas path 14 communicated with the inner cavity 2a1 of the transducer shell 2a can be connected to the bearing 8, which can affect the bearing 8, easily leading to the increase of the air pressure in the space where the bearing 8 is located, causing the lubricating grease in the bearing 8 to flow out, and the performance of the bearing 8 will seriously affect the service life of the ultrasonic knife handle 100. For this purpose, the first cooling gas path 14 is connected to the inner cavity 2a1 of the transducer shell 2a through the bearing gland 21, and the bearing 8 is not directly connected to the first cooling gas path 14, so as to avoid the bearing 8 being affected by the first cooling gas path 14. Figures 6-14The outer side of the transducer shell 2a is provided with a sealing cover plate 44, which is arranged at the front end of the bearing 8 and located at the rear end of the inner cavity 2a1, and the outer shell assembly 5 extends to the outer circumferential side of the transducer shell 2a, so that the transducer shell 2a, the sealing cover plate 44 and the outer shell assembly 5 form a first channel 14a, and the first cooling gas path 14 communicates with the inner cavity 2a1 through the first channel 14a.

[0129] After the cold gas delivered by the external cooling gas source flows out of the first cooling gas path 14 under the guidance of the first channel 14a, it flows into the inner cavity 2a1 in the first channel 14a, and the first cooling gas path 14 does not directly communicate with the space where the bearing 8 is located, thereby avoiding the increase of the air pressure in the space where the bearing 8 is located.

[0130] It should be noted that by arranging the sealing cover plate 44 between the transducer shell 2a and the bearing 8, the cavity formed between the transducer shell 2a, the bearing 8 and the outer shell assembly 5 is divided into the gap space 20 and the first channel 14a, that is, the sealing cover plate 44, the outer shell assembly 5 and the bearing 8 form the gap space 20, and the sealing cover plate 44, the outer shell assembly 5 and the transducer shell 2a form the first channel 14a, wherein the cold gas in the first cooling gas path 14 mainly enters the first channel 14a, and then enters the inside of the transducer shell 2a through the first channel 14a to cool the transducer 2b, that is, the first cooling gas path 14 communicates with the inside of the transducer shell 2a through the first channel 14a.

[0131] It can be understood that, in order to avoid the cold gas in the first channel 14a entering the gap space 20 and affecting the bearing 8, a sealing fit is arranged between the first channel 14a and the gap space 20 to separate the first channel 14a from the gap space 20. For example, as an example of the present embodiment, referring to Figures 6-7 , 17, a sealing member is arranged between the sealing cover plate 44 and the outer shell assembly 5 to seal and isolate the first channel 14a from the gap space 20.

[0132] Of course, considering that the transducer shell 2a and the bearing outer sleeve 5a will rotate relative to each other in the case of high-speed rotation of the ultrasonic knife handle 100, if the sealing effect of the sealing member is too good, it is easy to cause friction between the transducer shell 2a and the sealing member, generating a large amount of heat, so the sealing member can be made of polytetrafluoroethylene to reduce the rotational friction, but this will cause a small gap between the transducer shell 2a and the sealing member, allowing part of the cold gas to enter the gap space 20, causing the air pressure in the space where the bearing 8 is located to increase, and causing the lubricating grease inside the bearing 8 to be lost. For this reason, referring to Figure 7 , 11As an example of the present embodiment, the outer housing assembly 5 is provided with a pressure relief hole 22 communicating with the gap space 20, the pressure relief hole 22 penetrating through the outer housing assembly 5 and communicating to the outside of the outer housing assembly 5 to discharge the gas in the gap space 20.

[0133] It can be understood that the flow rate of the gas is one of the main factors affecting the gas cooling, and increasing the flow speed of the cold gas inside the transducer housing 2a is conducive to the heat dissipation of the transducer 2b. In this regard, reference is made to Figure 6 、 13 As one of the ways to increase the flow speed of the cold gas inside the transducer housing 2a, the outer side of the transducer housing 2a is connected with an air flow turbine 19, the air flow turbine 19 is kept fixed relative to the transducer housing 2a, and the air flow turbine 19 is arranged in the first channel 14a and rotates synchronously with the transducer housing 2a, thereby driving the air flow in the first channel 14a to enter the inside of the transducer housing 2a.

[0134] The air flow turbine 19 includes a plurality of turbine blades 19a, the plurality of turbine blades 19a are arranged in a circumferential direction of the transducer housing 2a and are in abutment with the transducer housing 2a, thereby forming a turbine structure. By arranging the air flow turbine 19, in the case of high-speed rotation of the present ultrasonic knife handle 100, the air flow turbine 19 can rotate at a high speed along with the transducer housing 2a, thereby sucking the air flow in the first channel 14a into the inside of the transducer housing 2a, accelerating the cold gas to enter the inside of the transducer housing 2a, so that the flow speed of the cold gas passing through the inside of the transducer housing 2a is faster, thereby improving the heat dissipation effect of the cold gas on the transducer 2b.

[0135] The piezoelectric vibrator 2b1 of the transducer 2b is usually arranged in a stacked manner along the axial direction of the knife body 1, so that the cold gas in the first channel 14a enters the inner cavity 2a1 and can pass through the piezoelectric vibrator 2b1 along the flow direction. In this case, the flow speed of the cold gas in the inner cavity 2a1 is optimal, and there is no need to turn in the inner cavity 2a1 to cause flow speed loss. To achieve this case, the air inlet hole 16a of the transducer housing 2a needs to be arranged at the top of the transducer housing 2a, so as an example of the present embodiment, the transducer housing 2a is provided with a plurality of air inlet holes 16a penetrating to the inner cavity 2a1 at one end of the transducer housing 2a facing the sealing cover plate 44, and there is at least one air inlet hole 16a between adjacent two turbine blades 19a, thereby enabling the cold gas in the first channel 14a to be driven by the air flow turbine 19 and more uniformly enter the inner cavity 2a1 to cool the transducer 2b. Moreover, the air flow turbine 19 can also more uniformly distribute the cold gas in the first channel 14a to the air inlet holes 16a, preventing the cold gas from forming turbulent flow in the inner cavity 2a1 and causing energy loss.

[0136] Reference is made to Figure 13The air flow turbine 19 can adopt a turbine structural layout, and is fixedly connected to the rear side of the transducer shell 2a by bolts or other structures, and is attached to the transducer shell 2a. It should be noted that the air flow turbine 19 and the transducer shell 2a are designed in a split body, which is beneficial to the machining of the air flow turbine 19. Of course, as an example of the present embodiment, the air flow turbine 19 is integrally formed with the sealing cover plate 44, which can enable the two to be synchronously fixedly installed on the transducer shell 2a, thereby omitting an assembly step.

[0137] Of course, in the case of high-speed rotation of the ultrasonic knife handle 100, the bearing 8 is also prone to generate a large amount of heat, which causes the bearing 8 to overheat and affects the service life. Therefore, the ultrasonic knife handle 100 of the present embodiment utilizes the mounting space formed by the mounting portion 4 to enable the outer shell assembly 5 to be sleeved on the mounting portion 4 through the bearing 8. In this way, the outer diameter of the bearing 8 can be smaller than the outer diameter of the shell portion 2a2, and can also be smaller than the outer diameter of the body portion 1b, so that the size of the bearing 8 can be controlled. Moreover, the outer shell assembly 5 can be arranged in the mounting space formed by the mounting portion 4, so as to reduce the occupied space of the outer shell assembly 5 outside the knife body 1 and the transducer shell 2a, and enable the first cooling gas path 14 to be closer to the transducer shell 2a. The cold air input from the external cooling gas source flows to the inside of the transducer shell 2a at a shorter distance, reduces the loss of the cold air in the flow process, and increases the flow rate of the cold air entering the inside of the transducer shell 2a, so that the heat generated by the transducer 2b can be more easily taken away.

[0138] It should be noted that in the related schemes involving the cooling structure, the knife body 1 and the transducer shell 2a of the ultrasonic knife handle 100 do not necessarily adopt a detachable design, and the knife body 1 and the transducer shell 2a can also be an integral structure. In the ultrasonic knife handle 100, the knife body 1 and the transducer shell 2a are generally collectively referred to as a knife handle body, and when the knife handle body is an integral structure, the knife body 1 and the transducer shell 2a are connected to each other but cannot be detached. In these ultrasonic knife handles 100, the outer shell assembly 5 can be sleeved on the outer peripheral side of the knife body 1, or on the outer peripheral side of the transducer shell 2a, or on the joint position of the knife body 1 and the transducer shell 2a, i.e., on the outer peripheral side of the knife body 1 and the transducer shell 2a. Moreover, in these ultrasonic knife handles 100, the first cooling gas path 14 provided in the outer shell assembly 5 can also be communicated to the inside of the transducer shell 2a. The arrangement mode of the first cooling gas path 14 communicated to the transducer shell 2a is the same as that of the ultrasonic knife handle 100 of the present embodiment, and therefore no further illustration is given in the drawings.

[0139] It should be noted that based on the two implementation modes of the mounting portion formed by the mutual cooperation of the first protruding portion 1a and the second protruding portion 2a3, the cooperation between the bearing 8 and the mounting portion 4 also has at least two modes. One is that the bearing 8 is sleeved on the outer peripheral side of the mounting portion 4, and the other is that the bearing 8 is sleeved on the outer peripheral side of the transducer shell 2a. Figures 6-7The inner ring of the bearing 8 is fitted onto the first protrusion 1a, thereby connecting and fixing the bearing 8 to the blade body 1. In this way, both the bearing 8 and the transducer housing 2a will use the blade body 1 as the assembly reference, effectively reducing the accumulation of errors caused by assembly, improving the assembly accuracy of the bearing 8, the outer housing assembly 5 and the transducer housing 2a, and making the ultrasonic scalpel handle 100 operate better in high-speed rotation. Secondly, the inner ring of the bearing 8 is fitted onto the second protrusion 2a3, thereby connecting and fixing the bearing 8 to the transducer housing 2a, which also enables the assembly of the bearing 8 with the mounting part 4.

[0140] When the ultrasonic scalpel holder 100 rotates at high speed, the inner ring of the bearing 8 rotates at high speed along with the scalpel body 1, causing a large amount of friction between the inner and outer rings of the bearing 8, resulting in severe heat generation in the bearing 8. Considering that the first cooling air passage 14 is located within the outer casing assembly 5, the bearing 8 can be cooled using the first cooling air passage 14. (Reference) Figures 6-14 As an example of this embodiment, the outer casing assembly 5 includes a bearing outer sleeve 5a and an airflow seat 5b. The bearing outer sleeve 5a is connected to the outer ring of the bearing 8 and extends to the outer periphery of the transducer housing 2a, forming a first channel 14a between the transducer housing 2a and the sealing cover plate 44. The airflow seat 5b is connected to the outer periphery of the bearing outer sleeve 5a and forms a second channel 14b between the bearing outer sleeve 5a and the bearing outer sleeve 5a. The first channel 14a and the second channel 14b are connected, and the airflow seat 5b has a first air intake channel 14c that is connected to an external cooling air source. The first air intake channel 14c and the second channel 14b are connected in sequence to form a first cooling air path 14.

[0141] The bearing outer sleeve 5a is usually made of metal. Therefore, the bearing outer sleeve 5a connected to the outer ring of the bearing 8 can absorb some of the heat generated by the bearing 8, thus playing a certain role in cooling the bearing 8. Furthermore, the cold air supplied by the external cooling air source enters the second channel 14b through the first air intake channel 14c. Since the bearing outer sleeve 5a and the air intake seat 5b form the second channel 14b, the cold air and the bearing outer sleeve 5a undergo the first heat exchange, which carries away the heat of the bearing outer sleeve 5a, thereby reducing the temperature of the bearing outer sleeve 5a and increasing the temperature difference between the bearing 8 and the bearing outer sleeve 5a. This further allows the heat generated by the bearing 8 to be absorbed by the bearing outer sleeve 5a, thus achieving the cooling of the bearing 8. Moreover, with the cooperation of the airflow turbine 19, when the ultrasonic scalpel handle 100 rotates at high speed, the airflow turbine 19 can rotate at high speed along with the transducer housing 2a. Under the action of the airflow turbine 19, the cold air will accelerate through the air inlet 16a, making the flow rate of the cold air faster, thereby further improving the heat dissipation effect of the cold air on the transducer 2b and making up for the cold loss that has already undergone one heat exchange before the cold air cools the transducer 2b.

[0142] It can be understood that the temperature of the bearing sleeve 5a is an important factor determining the degree of heat exchange between the bearing sleeve 5a and the bearing 8, and therefore, when the cold air passes through the bearing sleeve 5a, it is necessary to ensure that the cold air can fully take away the heat of the bearing sleeve 5a. Referring to Figure 12 As an example of the present embodiment, a flow guide 17 is provided in the second channel 14b, the flow guide 17 is provided with a flow guide air groove 18 which is in communication with the second channel 14b, and the flow guide air groove 18 is arranged in a spiral manner in the front-rear direction, i.e. the axial direction of the cutter body 1, on the outer surface side of the flow guide 17.

[0143] It can be understood that in the above example structure, the bearing sleeve 5a is connected to the outer ring of the bearing 8, forming a layout around the outer ring of the bearing 8, so that the first channel 14a formed between the bearing sleeve 5a and the sealing cover plate 44 and the transducer housing 2a is a annular space arranged around the transducer housing 2a, and the airflow seat 5b is connected to the outer circumferential side of the bearing sleeve 5a, also forming a layout around the bearing sleeve 5a, so that the second channel 14b formed between the airflow seat 5b and the bearing sleeve 5a is also an annular space. Therefore, by providing the flow guide air groove 18 on the flow guide 17, the cold air leaving the second channel 14b will form a rotational flow, which not only makes the flow rate of the cold air in the first channel 14a faster, but also the cold air flowing in a rotational flow matches the annular layout of the first channel 14a, and the first channel 14a does not hinder the flow of cold air in it, making the flow rate of the cold air entering the inner cavity 2a1 faster, in this way, the flow rate of the cold air through the transducer 2b will be further improved, so that the cold air can take away more heat from the transducer 2b, thereby making up for the loss of cold energy in the second heat exchange between the cold air and the transducer 2b.

[0144] Referring to Figure 6 , 9 -10, as an example of the present embodiment, in the case where the insulating member 12 is provided in the transducer housing 2a, the insulating member 12 is arranged on the outer circumferential side of the transducer 2b and is spaced apart from the transducer 2b, so that a cooling channel 13 is formed between the insulating member 12 and the transducer 2b, the cooling channel 13 is in communication with the inner cavity 2a1 and is in communication with the first cooling air passage 14 through the air inlet hole 16a.

[0145] The insulation piece 12 is made of insulation material, such as plastic steel, etc. The insulation piece 12 is used to form insulation isolation between the transducer 2b and the transducer housing 2a, so as to avoid winding insulation cloth outside the transducer 2b, affecting heat dissipation of the transducer 2b, and the cooling channel 13 between the insulation piece 12 and the transducer 2b is used to flow cooling gas from the first channel 14a to the cooling channel 13, so as to cool the transducer 2b. Moreover, the arrangement of the insulation piece 12 is conducive to reducing the flow area of the transducer 2b, so that the cooling gas can quickly pass through the cooling channel 13, and the cooling effect of the transducer 2b is further improved.

[0146] The cooling gas which is subjected to the first heat exchange with the bearing sleeve 5a further flows to the first channel 14a and reaches the transducer 2b through the cooling channel 13, and is subjected to the second heat exchange with the transducer 2b, so as to cool the transducer 2b. Of course, in order to enable the cooling gas to enter and exit the transducer housing 2a, the transducer housing 2a is provided with corresponding hole structure or channel structure. Referring to Figure 14 As an example of the embodiment, the transducer housing 2a is provided with the exhaust hole 16b arranged through the periphery, and the inlet hole 16a and the exhaust hole 16b are communicated with the inside of the transducer housing 2a, so as to form the third cooling gas path 16 which is communicated with the first cooling gas path 14 and the first channel 14a.

[0147] It should be noted that the first cooling gas path 14, the first channel 14a and the third cooling gas path 16 are communicated with each other, so as to form the internal cooling gas path of the ultrasonic knife handle 100. The cooling gas which enters the internal cooling gas path through the first inlet channel 14c is guided along the first cooling gas path 14, the first channel 14a and the third cooling gas path 16, sequentially passes through the bearing sleeve 5a, the transducer housing 2a and the transducer 2b, is subjected to the first heat exchange with the bearing sleeve 5a and the second heat exchange with the transducer 2b, and is then discharged from the transducer housing 2a.

[0148] In some ultrasonic knife handles 100, the cross-sectional profile of the outer periphery of the transducer housing 2a is circular, and at this time, the exhaust hole 16b can be arranged in the tangential direction of the circle, and such arrangement is conducive to discharging the cooling gas in the inner cavity 2a1.

[0149] In the structure of the ultrasonic knife handle 100, the front end of the transducer shell 2a is usually connected with a horn 42, and a knife 43 is connected to the front end of the horn 42, and the horn 42 is used to increase the amplitude of the knife 43. In the process of assembling the disc knife of the ultrasonic knife handle 100 to cut the material, a large amount of heat will be generated when the knife 43 cuts the material, which will cause the temperature of the material to rise, and then cause the glue inside the material to melt and adhere to the knife 43, or the cuttings generated during processing adhere to the knife 43, which will affect the subsequent processing effect. Therefore, the ultrasonic knife handle 100 is additionally provided with a cold gas structure for the knife 43 to cool the knife 43 during processing. Moreover, considering that the cold gas entering through the first gas inlet channel 14c exchanges heat with the bearing outer sleeve 5a and the transducer 2b, and then exchanges heat with the knife 43, the efficiency is relatively low, so the ultrasonic knife handle 100 is also provided with a gas path structure of the second cooling gas path 27 which is independent of the first cooling gas path 14.

[0150] Reference Figure 16 As an example of the present embodiment, the outer shell assembly 5 is provided with a first gas guide pipe 29 and a second gas guide pipe 30, wherein the first gas guide pipe 29 extends along the front-rear direction, that is, the axial direction of the knife body 1; the second gas guide pipe 30 is arranged in the circumferential direction of the horn 42 and communicates with the first gas guide pipe 29; the outer shell assembly 5 is also provided with a second gas inlet channel 27a which communicates with an external cooling gas source, and the second gas inlet channel 27a, the first gas guide pipe 29 and the second gas guide pipe 30 communicate in sequence to form the second cooling gas path 27. The arrangement path of the second gas guide pipe 30 can also be provided with a nozzle 28 which can cool the knife 43, and the nozzle 28 communicates with the second gas guide pipe 30 to output the cold gas of the second cooling gas path 27.

[0151] The first gas guide pipe 29 and the second gas guide pipe 30 are exposed and are easy to be damaged by impact. In view of this situation, the outer shell assembly 5 can extend to the position of the first gas guide pipe 29 and the second gas guide pipe 30 to provide protection for the first gas guide pipe 29 and the second gas guide pipe 30. Reference Figures 16-19 As an example of the present embodiment, the outer shell assembly 5 includes a first sleeve shell 23 which is arranged at intervals on the outer circumferential side of the transducer shell 2a, so as to form a fourth channel 24 with the transducer shell 2a; the fourth channel 24 communicates with the exhaust hole 16b and is provided with an exhaust port 24a facing the front end, in this way, the cold gas flowing through the first cooling gas path 14 will enter the fourth channel 24 after being discharged from the transducer shell 2a through the exhaust hole 16b, and will flow to the exhaust port 24a under the limitation of the fourth channel 24, and finally be discharged through the exhaust port 24a. Since the exhaust port 24a is arranged towards the front end, the cold gas discharged through the exhaust port 24a can blow towards the knife 43 to cool the knife 43 once.

[0152] The outer shell assembly 5 further comprises a second shell 25 arranged on the outer circumferential side of the first shell 23, so as to form a third passage 26 between the first shell 23 and the second shell 25, and a gas jet opening 26a is formed on the third passage 26 and communicates with the outside. The second gas guide pipe 30 communicates with the nozzle 28 through the gas jet opening 26a.

[0153] The second gas inlet passage 27a can be independent of the first gas inlet passage 14c, that is, different external cooling gas sources can be communicated according to actual needs, so that the first cooling gas path 14 and the second cooling gas path 27 are independent of and do not interfere with each other. Of course, the second gas inlet passage 27a and the first gas inlet passage 14c can also communicate to the same cooling gas source, and the second gas inlet passage 27a and the first gas inlet passage 14c are independently supplied with gas through valves. In the foregoing case, the second gas inlet passage 27a always introduces cooling gas independently of the first gas inlet passage 14c, so that the cooling gas flows along the third passage 26 to the gas jet opening 26a. The gas jet opening 26a can be connected with the nozzle 28 arranged towards the tool 43, or the gas jet opening 26a itself is arranged towards the tool 43, so that the cooling gas introduced through the second gas inlet passage 27a is directly blown to the tool 43 and exchanges heat with the tool 43.

[0154] The tool 43 of the ultrasonic horn 100 can exchange heat with two cooling gas paths respectively, one of which is the cooling gas flowing to the exhaust hole 24a through the first cooling gas path 14 and the third cooling gas path 16, and the other of which is the cooling gas flowing to the gas jet opening 26a through the second cooling gas path 27. Under the cooling action of the two cooling gas paths, the tool 43 of the ultrasonic horn 100 and the material cut by the tool 43 can be effectively cooled, so as to avoid that the material absorbs too much heat during the cutting process by the tool 43, and causes the glue inside the material to melt or the cuttings to adhere to the tool 43.

[0155] Under the guidance of the first gas guide pipe 29 and the second gas guide pipe 30, the cooling gas entering the second cooling gas path 27 through the second gas inlet passage 27a will flow along the axial direction of the tool body 1, and then flow along the circumferential direction of the amplitude rod 42. In this way, the cooling gas sprayed through the gas jet opening 26a can be blown to the tool 43 from the circumferential direction of the amplitude rod 42, so as to sufficiently cool each position of the tool 43. The second gas guide pipe 30 is preferably arranged in the circumferential direction of the amplitude rod 42, so that the gas jet openings 26a distributed along the arrangement path of the second gas guide pipe 30 can be arranged around the tool 43, so that the cooling gas can fully contact the tool 43.

[0156] In addition, the third channel 26 can be filled with thermal insulation material to form a thermal insulation layer (not shown in the figure) covering the first air duct 29 and the second air duct 30, so as to ensure that the cold air of the second cooling air path 27 is maintained in a low-temperature state. Of course, the thermal insulation material can also assist in the connection and cooperation of the first sleeve 23 and the second sleeve 25. For example, the rear end of the second sleeve 25 is fixedly connected with the air flow seat 5b, the first sleeve 23 is fixedly arranged inside the second sleeve 25 through the thermal insulation material, and in order to enable the first air duct 29 to be fixed, a support is arranged inside the second sleeve 25, so that the first air duct 29 is fixed on the second sleeve 25.

[0157] It should be noted that the first cooling air path 14 and the second cooling air path 27 are also applicable to the ultrasonic tool holder 100 in which the tool body 1 and the transducer shell 2a are in an integrated structure. In the ultrasonic tool holder in which the tool body 1 and the transducer shell 2a are in an integrated structure, the first cooling air path 14, the second cooling air path 27, and the third cooling air path 16 are arranged in the same manner as the ultrasonic tool holder 100, and thus will not be described again.

[0158] In the working process of the ultrasonic tool holder 100, the main shaft of the machining tool is connected to the rear side of the tool body 1 to drive the tool body 1 to rotate, and the outer shell assembly 5 remains stationary relative to the tool body 1 during the rotation of the tool body 1. Since the tool body 1 can rotate relative to the outer shell assembly 5, after the tool body 1 is separated from the main shaft, the tool body 1 and the outer shell assembly 5 will relatively rotate, causing the tool body 1 to deviate from the position of being connected to the main shaft, so that when the ultrasonic tool holder 100 is connected again, the main shaft cannot be aligned with the tool body 1, thereby causing the machining tool to be unable to change tools. In view of this situation, a limiting structure can be arranged on the ultrasonic tool holder 100 to limit the relative rotation between the tool body 1 and the outer shell assembly 5 when the tool body 1 is separated from the main shaft.

[0159] Reference Figures 20-24 As an example of the present embodiment, the tool body 1 is fixedly connected with a receiving groove 31 on the outer periphery, the wireless receiving assembly 3 is arranged in the receiving groove 31, and a positioning groove 32 is formed on the outer periphery of the receiving groove 31.

[0160] The outer shell assembly 5 is provided with a first positioning assembly 33 and a second positioning assembly 34 which can move relative to the outer shell assembly 5, and the movement of the second positioning assembly 34 relative to the outer shell assembly 5 can drive the first positioning assembly 33 to act, so that the first positioning assembly 33 is separated from the positioning groove 32, so that the receiving groove 31 and the outer shell assembly 5 can relatively rotate, that is, the tool body 1 and the outer shell assembly 5 can relatively rotate; and the first positioning assembly 33 can be driven to extend into the positioning groove 32, so that the receiving groove 31 and the outer shell assembly 5 are relatively stationary, that is, the tool body 1 and the outer shell assembly 5 are relatively stationary.

[0161] By setting the first positioning assembly 33 and the second positioning assembly 34, as an example of the present embodiment, the second positioning assembly 34 can be extended out of the outer housing assembly 5, when the ultrasonic knife handle 100 is connected to the main shaft, the second positioning assembly 34 extended out of the outer housing assembly 5 can be pressed, thereby driving the first positioning assembly 33 to act, making the first positioning assembly 33 out of the positioning groove 32, so that the receiving groove body 31 and the outer housing assembly 5 can rotate relatively, and because the receiving groove body 31 is connected and fixed with the knife body 1, at this time, the knife body 1 and the outer housing assembly 5 can rotate relatively; while the ultrasonic knife handle 100 is disconnected from the main shaft, the second positioning assembly 34 extended out of the outer housing assembly 5 can be restored, and by means of other reverse driving of the first positioning assembly 33, the first positioning assembly 33 is extended into the positioning groove 32, and then the receiving groove body 31 and the outer housing assembly 5 are relatively stationary, and because the receiving groove body 31 is connected and fixed with the knife body 1, at this time, the knife body 1 is also relatively stationary with the outer housing assembly 5.

[0162] Of course, the second positioning assembly 34 can also not extend out of the outer housing assembly 5, and a unit that can abut against the second positioning assembly 34 is arranged at the end of the main shaft, when the ultrasonic knife handle 100 is installed on the main shaft, the second positioning assembly 34 can also be pressed.

[0163] It should be noted that in some ultrasonic knife handles 100, the ultrasonic knife handle 100 can be driven by a brush structure or other electrical connection structure, so in these ultrasonic knife handles 100, the positioning groove 32 can also be directly arranged on the outer circumferential side of the knife body 1, so that the first positioning assembly 33 and the second positioning assembly 34 directly cooperate with the knife body 1. The cooperation mode of the first positioning assembly 33 and the second positioning assembly 34 with the knife body 1 is the same as that of the first positioning assembly 33 and the second positioning assembly 34 with the receiving groove body 31, which will not be described here.

[0164] The way of the first positioning assembly 33 extending into and out of the positioning groove 32 is various, for example, the first positioning assembly 33 can move linearly along the radial direction of the knife body 1 to enter and exit the positioning groove 32, or the first positioning assembly 33 can also swing relative to the knife body 1 to enter and exit the positioning groove 32. Referring to Figures 20-24 , as an example of the present embodiment, the first positioning assembly 33 includes a swing block 33a, the swing block 33a is rotationally connected with the outer housing assembly 5 to reciprocally approach or move away from the positioning groove 32, so that the swing block 33a extends into the positioning groove 32 or the swing block 33a out of the positioning groove 32.

[0165] It should be noted that the swing block 33a at least partially extends out of the outer housing assembly 5. Based on the swing block 33a being rotationally connected with the outer housing assembly 5, when the swing block 33a enters or exits the positioning groove 32, the swing block 33a will rotate relative to the outer housing assembly 5. For example, if the swing block 33a rotates relative to the outer housing assembly 5 in a clockwise direction to exit the positioning groove 32, then the swing block 33a rotates relative to the outer housing assembly 5 in a counterclockwise direction to enter the positioning groove. Compared to a linearly moving arrangement, the swing block 33a is arranged in a rotating manner, which can correspondingly reduce the distance between the second positioning assembly 34 and the shank body, so that the limiting structure composed of the first positioning assembly 33 and the second positioning assembly 34 is more suitable for small-sized shank structures, or shank structures with a relatively large shank body, such as a shank structure in which a wireless receiving assembly is mounted on the shank body, and can more effectively save the occupied space of the limiting structure and improve the space utilization of the outer housing assembly 5.

[0166] In order to drive the swing block 33a to rotate relative to the outer housing assembly 5, the first positioning assembly 33 can be provided with a moving structure for actuating the swing block 33a to rotate. Referring to Figures 20-24 , as an example of the present embodiment, the first positioning assembly 33 further includes a reciprocating slider 33b configured to reciprocate towards the tool body 1 on the outer circumferential side of the tool body 1, and an end of the swing block 33a away from the receiving groove 31 is rotationally connected with the slider 33b, that is, an end of the swing block 33a away from the positioning groove 32 is rotationally connected with the slider 33b, and an end of the slider 33b away from the tool body 1 abuts against the second positioning assembly 34, so that the slider 33b is driven to move towards the tool body 1 and can drive the swing block 33a to rotate, thereby causing the other end of the swing block 33a to exit the positioning groove 32. Of course, the rotation center between the slider 33b and the swing block 33a is offset from the rotation center between the swing block 33a and the outer housing assembly 5.

[0167] Through the cooperation between the slider 33b and the swing block 33a, the swing block 33a can rotate relative to the outer housing assembly 5, and the first positioning assembly 33 can realize the functions of limiting or releasing the limitation. In order to drive the slider 33b to act, and ensure that the first positioning assembly 33 can realize its functions, referring to Figures 20-24 , as an example of the present embodiment, the outer housing assembly 5 is provided with a first elastic member 37 arranged on the side of the slider 33b close to the tool body 1, and an end of the first elastic member 37 abuts against the end of the slider 33b close to the tool body 1, and the other end of the first elastic member 37 is fixedly arranged, so that the first elastic member 37 can exert a force on the slider 33b in a direction away from the tool body 1, so that the slider 33b has a tendency to move away from the tool body 1.

[0168] To realize the movement of the second positioning assembly 34 relative to the outer housing assembly 5, there are various implementation manners, and the positioning column 34a is one of the feasible solutions. Referring to Figures 20-24 , the second positioning assembly 34 includes the positioning column 34a, which is capable of reciprocating along the axial direction of the tool body 1, and the end of the sliding block 33b away from the tool body 1 is capable of abutting against the positioning column 34a to drive the swing block 33a out of the positioning groove 32.

[0169] It can be understood that the sliding block 33b is subjected to a force in the direction away from the tool body 1 under the action of the first elastic member 37, and the end of the sliding block 33b away from the tool body 1 abuts against the positioning column 34a. Of course, in order to limit the movable stroke of the sliding block 33b, referring to Figures 20-24 , as an example of the embodiment, the second positioning assembly further includes the limiting block 34b, the front end of the positioning column 34a is connected to the limiting block 34b, the limiting block 34b is provided with the clearance 34b1 recessed towards the inside of itself, and the positioning column 34a is capable of reciprocating along the axial direction of the tool body 1 and moving the clearance 34b1 to the position of the sliding block 33b, so that the sliding block 33b extends into the clearance 34b1, thereby driving the swing block 33a to extend into the positioning groove 32.

[0170] The limiting block 34b and the positioning column 34a can be an integral structure or a split structure. Under the action of the limiting block 34b, the sliding block 33b driven by the first elastic member 37 enters the clearance 34b1 and is constrained by the limiting block 34b and cannot continue to move, so that the sliding block 33b cannot be completely driven out and the limiting structure is not failed. With the movement of the second positioning assembly 34 along the axial direction of the tool body 1, the second positioning assembly 34 pushes the sliding block 33b towards the tool body 1 again, so that the positioning column 34a can move to the horizontal position of the sliding block 33b, and the swing block 33a is driven to be out of the positioning groove 32.

[0171] In order to facilitate the cooperation between the limiting block 34b and the sliding block 33b, the outer circumferential side of the limiting block 34b can be provided with the inclined surface 34b10 inclined to the front-rear direction, the inclined surface 34b10 is arranged at the rear side of the clearance 34b1, gradually converges towards the front side of the limiting block 34b, and is communicated into the clearance 34b1. In this way, when the limiting block 34b moves towards the front end of the tool body 1, the inclined surface 34b10 can gradually push the sliding block 33b towards the tool body 1, so that the sliding block 33b is not stuck inside the clearance 34b1. Moreover, the inclined surface 34b10 extends to the outer circumferential surface of the positioning column 34a, and when the second positioning assembly continues to move forward, the end of the sliding block 33b in contact with the second positioning assembly 34 can gradually move to the positioning column 34a along the inclined surface 34b10, so that the sliding block 33b is not stuck during the movement.

[0172] In addition, referring to Figures 20-24As an example of the embodiment, the slider 33b is rotationally connected with a pulley 39 at the end of the positioning post 34a, and the outer edge of the pulley 39 extends out of the slider 33b, so that the pulley 39 can roll with the second positioning assembly 34, and the slider 33b moves more smoothly. The second positioning assembly 34 can drive the slider 33b to move close to the tool body 1 through the pulley 39.

[0173] In order to drive the second positioning assembly 34 to act, and ensure that the second positioning assembly 34 can realize its function, refer to Figures 20-24 As an example of the embodiment, the shell assembly 5 is further provided with a second elastic member 40, one end of the second elastic member 40 abuts against the front end of the second positioning assembly 34, and the other end of the second elastic member 40 is fixedly arranged, so that the second positioning assembly 34 has a tendency to move towards the rear side of the tool body 1 after being pressed, that is, the second positioning assembly 34 is subjected to a force moving towards the rear side. The power to press the second positioning assembly 34 can be the power applied to the second positioning assembly 34 by the main shaft during installation of the tool handle and the main shaft, which has been described above.

[0174] Of course, in order to facilitate the rotation of the swing block 33a relative to the shell assembly 5, and to provide necessary protection for the first positioning assembly 33 and the second positioning assembly 34, a groove structure can be arranged in the shell assembly. Refer to Figures 20-24 As an example of the embodiment, the shell assembly 5 is provided with a first mounting groove 35, the first mounting groove 35 extends towards the tool body 1 at the outer circumferential side of the tool body 1, and the slider 33b can reciprocate in the first mounting groove 35.

[0175] It can be understood that the first mounting groove 35 is arranged at the outer circumferential side of the tool body 1 and extends towards the tool body 1, so that the first mounting groove 35 is inclined to / vertical to the axial direction of the tool body 1, and therefore the slider 33b reciprocating in the first mounting groove 35 will reciprocate towards and away from the tool body 1 with its movement. Since the swing block 33a rotates relative to the shell assembly 5, a rotation center must be arranged between the swing block 33a and the shell assembly 5, which is usually a shaft structure.

[0176] The first elastic member 37 is arranged in the first mounting slot 35 and is disposed on the side of the slider 33b close to the cutter body, and can apply a force to the slider 33b in a direction away from the cutter body 1, so that the slider 33b has a tendency to move away from the cutter body 1 along the first mounting slot 35. As the slider 33b reciprocates towards and away from the cutter body 1, the end of the swing block 33a away from the slider 33b reciprocates into and out of the positioning slot 32 through the rotation center between the swing block 33a and the outer shell assembly 5. Since the rotation center between the slider 33b and the swing block 33a is offset from the rotation center between the swing block 33a and the outer shell assembly 5, and the first mounting slot 35 is inside the outer shell assembly 5, the swing block 33a extends outside the outer shell assembly 5, so that the slider 33b is located on the front side of the swing block 33a, and the rear end of the swing block 33a extends outside the outer shell assembly 5. At this time, as the slider 33b moves, the slider 33b will push the swing block 33a, and the swing block 33a will rotate relative to the outer shell assembly 5.

[0177] Based on the rotation action of the swing block 33a, a corresponding space needs to be configured in the outer shell assembly 5 for the swing block 33a to rotate, so the outer shell assembly 5 is also provided with a second mounting slot 36, which is arranged in the front-rear direction, and the front end of the second mounting slot 36 is in communication with the first mounting slot 35, and the rear end of the second mounting slot 36 is in communication with the positioning slot 32; the swing block 33a is rotationally connected in the second mounting slot 36, and the rear end of the swing block 33a extends outside the second mounting slot 36. Furthermore, the outer shell assembly 5 is also provided with a third mounting slot 38, which is arranged in the front-rear direction, and the end of the first mounting slot 35 away from the cutter body 1 is in communication with the third mounting slot 38; and the positioning column 34a can reciprocate in the third mounting slot 38, and the positioning column 34a can move to the communication position of the first mounting slot 35 and the third mounting slot 38 to limit the slider 33b from exiting the first mounting slot 35, so that the slider 33b drives the swing block 33a to exit the positioning slot 32.

[0178] The first elastic member 37 can be a spring. The positioning column 34a and the first elastic member 37 cooperate with each other to provide a mode of realizing the reciprocating movement of the sliding block 33b in the first mounting groove 35: the sliding block 33b presses the first elastic member 37 in the first mounting groove 35, so that the first elastic member 37 exerts a force on the sliding block 33b in the direction away from the cutter body 1, driving the sliding block 33b away from the cutter body 1. After the connecting part of the positioning column 34a and the limiting block 34b moves to the position where the first mounting groove 35 and the third mounting groove 38 are communicated, the second positioning assembly 34 continues to be driven to move towards the rear end of the cutter body 1, the sliding block 33b will push the swing block 33a, so that the swing block 33a rotates towards the positioning groove 32 and extends into the positioning groove 32, thereby making the outer shell assembly 5 relatively stationary with the cutter body 1; conversely, when the second positioning assembly 34 is driven to move towards the front end of the cutter body 1 and the positioning column 34a moves to the position where the first mounting groove 35 and the third mounting groove 38 are communicated, the sliding block 33b will be pushed into the first mounting groove 35, so that the first elastic member 37 is pressed, and the positioning column 34a blocks the port of the first mounting groove 35, so that the sliding block 33b cannot come out of the first mounting groove 35. In this process, the sliding block 33b will push the swing block 33a, so that the swing block 33a moves away from the positioning groove 32 and comes out of the positioning groove 32, thereby enabling the cutter body 1 to rotate relative to the outer shell assembly 5.

[0179] In order to drive the second positioning assembly 34 to act and ensure that the second positioning assembly 34 can realize its function, the second elastic member 40 is arranged in the third mounting groove 38, and the second elastic member 40 abuts against the front end of the second positioning assembly 34, so that the second positioning assembly 34 has a tendency to move along the third mounting groove 38 towards the rear side of the third mounting groove 38, i.e. a force is exerted on the second positioning assembly 34 to move towards the rear side. Of course, in order to prevent the second positioning assembly 34 from coming out of the third mounting groove 38, the third mounting groove 38 can be configured as a counterbore structure or a limiting structure is arranged in the passage, which will not be described here.

[0180] It should be noted that the first positioning assembly 33 and the second positioning assembly 34 can also be arranged on the rear side of the outer shell assembly 5, and do not need to be arranged by means of a groove structure. For example, the first positioning assembly 33 and the second positioning assembly 34 can be arranged outside the outer shell assembly 5, such as the sliding block 33b sliding on the rear end face of the outer shell assembly 5, and the swing block 33a is rotationally connected with the outer shell assembly 5 by means of a fixed rod.

[0181] It should be noted that the limiting structure composed of the first positioning assembly 33 and the second positioning assembly 34 can be applied to other tool shank structures, such as a non-ultrasonic tool shank, an ultrasonic tool shank with the tool body integrally connected with the transducer shell, or an ultrasonic tool shank without a wireless transmission structure, etc. In other tool shank structures, the positioning groove 32 is arranged on the outer circumferential side of the tool shank body, and the outer shell assembly 5 is rotatably sleeved on the outer circumferential side of the tool shank body. The structure of the first positioning assembly 33 and the second positioning assembly 34 is the same as that of the ultrasonic tool shank 100, and will not be described here.

[0182] Based on the foregoing ultrasonic tool shank 100, the embodiment further provides an ultrasonic machining equipment comprising the foregoing ultrasonic tool shank 100.

[0183] Based on the foregoing ultrasonic machining equipment, the embodiment further provides a machine tool comprising a machine tool body, a spindle arranged on the machine tool body, and the foregoing ultrasonic machining equipment.

[0184] In summary, the ultrasonic tool shank 100 provided by the embodiment connects the tool body 1 and the transducer shell 2a through detachable connection, thereby forming a mounting portion 4 at the connection position of the tool body 1 and the transducer shell 2a. The mounting portion 4 is retracted in the tool body 1, so that the outer diameter of the mounting portion 4 is smaller than the outer diameter of the tool body 1. In this way, the bearing 8 is sleeved on the mounting portion 4, which can effectively reduce the size of the bearing 8. In the case of high-speed rotation of the ultrasonic tool shank 100, the linear speed of the inner ring of the bearing 8 can be effectively reduced, thereby reducing the heat generation of the bearing 8 and improving the service life of the bearing 8. The problem of frequent maintenance and replacement of the bearing 8 of the existing ultrasonic tool shank 100 is solved.

[0185] Moreover, the ultrasonic tool shank 100 of the embodiment is provided with an electrical connection passage in the tool body 1 and the mounting portion 4, so that the wireless receiving assembly 3 can be mounted on the tool body 1 and in conduction with the transducer 2b. Moreover, the built-in electrical connection passage can ensure that the wire between the wireless receiving assembly 3 and the transducer 2b is not affected by the high-speed rotation of the ultrasonic tool shank 100, avoiding interference between the wire and the outer shell assembly 5 and the bearing 8 and affecting the normal work of the ultrasonic tool shank 100.

[0186] Moreover, the cooling passage 13 and the first cooling gas path 14 provided in the ultrasonic tool shank 100 of the embodiment are used to cool the transducer 2b by the first cooling gas path 14, thereby reducing the heat generation of the transducer 2b and preventing overheating of the transducer 2b from causing the ultrasonic tool shank 100 to fail to work normally. The cooling passage 13 is in communication with the first cooling gas path 14 at the rear end of the transducer shell 2a, so that the airflow passes through the transducer 2b along the axial direction of the tool body 1, thereby ensuring the flow rate of the cooling gas in the transducer shell 2a and avoiding the flow rate loss caused by the turning of the cooling gas in the transducer shell 2a.

[0187] And, the ultrasonic tool holder 100 of the embodiment is provided with the first air inlet channel 14c and the second air inlet channel 27a which are independent of each other, so that the first cooling air path 14 and the second cooling air path 27 are independent of each other and do not interfere with each other. In this way, the ultrasonic tool holder 100 can independently supply air to the transducer 2b and the tool 43 by using the first cooling air path 14 and the second cooling air path 27 respectively according to the heating conditions of the transducer 2b and the tool 43, so as to realize independent cooling of the transducer 2b and the tool 43.

[0188] And, the ultrasonic tool holder 100 of the embodiment is provided with the first air inlet channel 14c and the second air inlet channel 27a which are independent of each other, so that the first cooling air path 14 and the second cooling air path 27 are independent of each other and do not interfere with each other. In this way, the ultrasonic tool holder 100 can independently supply air to the transducer 2b and the tool 43 by using the first cooling air path 14 and the second cooling air path 27 respectively according to the heating conditions of the transducer 2b and the tool 43, so as to realize independent cooling of the transducer 2b and the tool 43.

[0189] The embodiment also provides an ultrasonic machining device and a machine tool, which apply the ultrasonic tool holder 100 and have the beneficial effects of the ultrasonic tool holder 100.

[0190] The first positioning assembly 33 and the second positioning assembly 34 of the embodiment are also applicable to non-ultrasonic tool holders and integrated tool holders and have the beneficial effects of the first positioning assembly 33 and the second positioning assembly 34. In addition, the embodiment also provides a machine tool which applies this type of tool holder and has the beneficial effects of this type of tool holder.

[0191] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make some improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. An ultrasonic blade handle, comprising: The ultrasonic surgical instrument comprises a blade, a transducer housing, an outer housing assembly and a wireless receiving assembly, wherein, The blade and the transducer housing are coaxially arranged, and the blade and the transducer housing are detachably connected and form a mounting portion retracted in the transducer housing, and the outer housing assembly is sleeved on the mounting portion through a bearing; The wireless receiving assembly is arranged on the outer circumferential side of the blade, and the wireless receiving assembly is arranged on the rear side of the mounting portion and electrically connected with the transducer in the transducer housing.

2. The ultrasonic blade handle of claim 1, wherein, The blade has a body portion and a first protruding portion at the front end of the body portion, and the outer diameter of the first protruding portion is smaller than the outer diameter of the body portion adjacent to the mounting portion, and the transducer housing has a housing portion and a second protruding portion at the rear end of the housing portion, and the outer diameter of the second protruding portion is smaller than the outer diameter of the housing portion adjacent to the mounting portion, and the second protruding portion is nested with the first protruding portion, so that the first protruding portion and the second protruding portion form the mounting portion; and the bearing is sleeved on the first protruding portion.

3. The ultrasonic blade handle of claim 1, wherein, A first electric connection channel is arranged in the blade, and the first electric connection channel penetrates to the outside of the blade to communicate with the wireless receiving assembly; and, A second electric connection channel is arranged in the mounting portion, and one end of the second electric connection channel communicates with the first electric connection channel, so that the first electric connection channel and the second electric connection channel form an electric connection passage.

4. The ultrasonic blade handle of claim 3, wherein, The blade has a first protruding portion extending towards the front end, the transducer housing has a second protruding portion extending towards the rear end, the second protruding portion is embedded in the first protruding portion, so that the first protruding portion and the second protruding portion form the mounting portion, and, The second electric connection channel is arranged in the first protruding portion and penetrates to the front end of the blade; the first electric connection channel communicates with the rear end of the second electric connection channel; and, A third electric connection channel is arranged in the transducer housing, and the third electric connection channel communicates with the second electric connection channel and communicates with the transducer.

5. The ultrasonic blade handle of claim 4, wherein, The ultrasonic blade handle comprises a first conductive member and a second conductive member, wherein the first conductive member is arranged in the second electric connection channel and electrically connected with the wireless receiving assembly; the second conductive member is arranged in the third electric connection channel and can form a plug-in fit with the first conductive member, and the second conductive member is electrically connected with the transducer.

6. The ultrasonic blade handle of claim 5, wherein, An insulating member is arranged in the transducer housing, and the insulating member is arranged at least on the outer circumferential side of the transducer and is arranged in space with the transducer; and, A wire groove is formed on the outer side of the insulating member, and the wire groove communicates with the inner side of the insulating member.

7. The ultrasonic blade handle of claim 6, wherein, The transducer comprises a piezoelectric vibrator, the insulating member extends to the rear end of the piezoelectric vibrator, and, The wire groove extends from the rear end of the piezoelectric vibrator to the outer circumferential side of the piezoelectric vibrator, and the projections of the first conductive member and the second conductive member in the front-rear direction are located in the wire groove.

8. The ultrasonic blade handle of claim 1, wherein, The transducer shell is provided with an inner cavity for accommodating the transducer, and the inner cavity is in communication with the external environment; and the outer shell assembly is provided with a first cooling gas path in communication with an external cooling gas source, and the first cooling gas path is in communication with the inner cavity.

9. The ultrasonic blade handle of claim 8, wherein, A sealing cover plate is mounted on the outer side of the transducer shell, and the sealing cover plate is arranged on the front side of the bearing and located on the rear side of the inner cavity. The outer shell assembly extends to the outer circumferential side of the transducer shell, so that the transducer shell, the sealing cover plate and the outer shell assembly form a first channel, and the first cooling gas path is in communication with the inner cavity through the first channel.

10. The ultrasonic blade handle of claim 9, wherein, An air flow turbine is arranged in the first channel, and the air flow turbine is fixed relative to the transducer shell, so that the air flow turbine rotates synchronously with the transducer shell, thereby driving the air flow in the first channel to enter the inside of the transducer shell.

11. The ultrasonic blade handle of claim 10, wherein, The transducer shell is provided with a plurality of air inlet holes penetrating to the inner cavity at one end towards the sealing cover plate. The air flow turbine includes a plurality of turbine blades, and the plurality of turbine blades are arranged at intervals along the circumference of the transducer shell, and at least one air inlet hole is arranged between adjacent two turbine blades.

12. The ultrasonic blade handle of claim 10, wherein, The air flow turbine is integrally formed with the sealing cover plate.

13. The ultrasonic blade handle of claim 9, wherein, The outer shell assembly includes a bearing outer sleeve and an air flow seat, wherein The bearing outer sleeve is connected to the outer ring of the bearing, and the bearing outer sleeve extends to the outer circumferential side of the transducer shell and forms the first channel with the transducer shell and the sealing cover plate; The air flow seat is connected to the outer circumferential side of the bearing outer sleeve and forms a second channel with the bearing outer sleeve. The second channel is in communication with the first channel, and the air flow seat is provided with a first air inlet channel in communication with an external cooling gas source. The first air inlet channel is in communication with the second channel in sequence to form the first cooling gas path.

14. The ultrasonic blade handle of claim 13, wherein, A flow guide is arranged in the second channel, and the flow guide is provided with a flow guide air groove in communication with the second channel. The flow guide air groove is arranged in an axial direction with a spiral arrangement from front to back, and is arranged in a spiral on the outer surface side of the flow guide.

15. The ultrasonic blade handle of claim 9, wherein, The sealing cover plate, the outer shell assembly and the bearing form a gap space, and a sealing fit is arranged between the first channel and the gap space to separate the first channel and the gap space.

16. The ultrasonic blade handle of claim 15, wherein, The outer shell assembly is provided with a pressure relief hole in communication with the gap space, and the pressure relief hole is in communication with the outside of the outer shell assembly to discharge the gas in the gap space.

17. The ultrasonic blade handle of claim 8, wherein, An insulating member is arranged in the transducer shell, and the insulating member is arranged at least on the outer circumferential side of the transducer and is arranged at intervals with the transducer, so as to form a cooling channel between the insulating member and the transducer, and the cooling channel is in communication with the inner cavity.

18. The ultrasonic blade handle of claim 17, wherein, An end of the transducer shell facing the bearing is provided with an air inlet hole penetrating to the inner cavity, a circumferential side of the transducer shell is provided with an air outlet hole arranged in penetration, the air inlet hole, the air outlet hole and the cooling channel are in communication; and a cross-sectional profile of an outer circumferential side of the transducer shell is circular, and the air outlet hole is arranged in extension along a tangent direction of the circle.

19. The ultrasonic blade of claim 1, wherein, A front end of the transducer shell is connected with a horn, and a front end of the horn is used for connecting a tool; and The outer shell assembly is provided with a first air guide pipe, a second air guide pipe and a second air inlet channel in communication with an external cooling gas source, wherein the first air guide pipe is arranged in extension along a front-rear direction, the second air guide pipe is arranged in a circumferential direction of the horn, and the second air inlet channel, the first air guide pipe and the second air guide pipe are sequentially in communication to form a second cooling gas path, and A nozzle for cooling the tool is arranged along an arrangement path of the second air guide pipe, and the nozzle is in communication with the second air guide pipe.

20. The ultrasonic blade handle of claim 19, wherein, The outer shell assembly comprises a first sleeve shell and a second sleeve shell, the first sleeve shell is arranged in interval on an outer circumferential side of the transducer shell, and the second sleeve shell is arranged on an outer circumferential side of the first sleeve shell, so that a third channel accommodating the first air guide pipe and the second air guide pipe is formed between the second sleeve shell and the first sleeve shell, and a gas outlet in communication with the nozzle is arranged on the third channel, and the second air guide pipe is in communication with the nozzle through the gas outlet.

21. The ultrasonic blade handle of claim 20, wherein, The outer shell assembly is further provided with a first cooling gas path in communication with the inside of the transducer shell, a fourth channel is formed between the first sleeve shell and the transducer shell, and an air outlet facing the front side is formed between the fourth channel and the horn; the inside of the transducer shell, the air outlet hole on the transducer shell, the fourth channel and the air outlet are sequentially in communication, and the first cooling gas path and the second cooling gas path are independently arranged.

22. The ultrasonic blade handle of claim 20, wherein, The third channel is filled with thermal insulation material to form a thermal insulation layer covering the first air guide pipe and the second air guide pipe.

23. The ultrasonic blade of claim 1, wherein, An outer circumferential side of the tool body is fixedly connected with a receiving groove body, the wireless receiving assembly is arranged in the receiving groove body, and an outer circumferential side of the receiving groove body is provided with a positioning groove; and The outer shell assembly is provided with a first positioning assembly and a second positioning assembly capable of moving relative to the outer shell assembly, movement of the second positioning assembly relative to the outer shell assembly can drive the first positioning assembly to act, so that the first positioning assembly extends into the positioning groove, so that the receiving groove body and the outer shell assembly are relatively stationary; and the first positioning assembly can be driven to be pulled out of the positioning groove, so that the receiving groove body and the outer shell assembly can relatively rotate.

24. The ultrasonic blade handle of claim 23, wherein, The first positioning assembly comprises a swing block, the swing block is rotationally connected with the outer shell assembly to reciprocally approach or move away from the receiving groove body, so that the swing block extends into the positioning groove or the swing block is pulled out of the positioning groove.

25. The ultrasonic blade handle of claim 24, wherein, The first positioning assembly further comprises a sliding block, the sliding block is configured to reciprocally move towards the tool body on an outer circumferential side of the tool body; and The swing block is rotationally connected to the slider away from the receiving groove body, and the slider is abutted to the second positioning assembly away from the cutter body, so that the slider is driven to be close to the cutter body, and the swing block is driven to rotate, so that the other end of the swing block is out of the positioning groove.

26. The ultrasonic blade handle of claim 25, wherein, The first elastic member is arranged on the outer housing assembly, and one end of the first elastic member is abutted to one end of the slider close to the cutter body, and the other end of the first elastic member is fixedly arranged. The slider is rotationally connected with a pulley at one end close to the second positioning assembly, and the outer edge of the pulley extends to the outside of the slider, so that the pulley is in rolling contact with the second positioning assembly, so that the second positioning assembly can drive the slider to be close to the cutter body through the pulley.

27. The ultrasonic blade handle of claim 25, wherein, The second positioning assembly comprises a positioning column capable of moving along the axial direction of the cutter body, and the other end of the slider is capable of abutting to the positioning column to drive the swing block to be out of the positioning groove. The second positioning assembly further comprises a limiting block connected to the front end of the positioning column, and the limiting block is provided with a clearance recessed towards the inside of the limiting block, so that the slider can be away from the cutter body and extend into the clearance, thereby driving the swing block to rotate and drive the swing block to extend into the positioning groove.

28. The ultrasonic blade handle of claim 27, wherein, The outer circumferential side of the limiting block is provided with an inclined surface inclined to the axial direction of the cutter body, the inclined surface is arranged at the rear side of the clearance and continues to the outer circumferential surface of the positioning column, and the inclined surface gradually converges towards the front side of the limiting block and communicates into the clearance.

29. The ultrasonic blade handle of claim 27, wherein, The second elastic member is arranged on the outer housing assembly, one end of the second elastic member is abutted to the front end of the second positioning assembly, and the other end of the second elastic member is fixedly arranged.

30. The ultrasonic blade of claim 25, wherein, The outer housing assembly is provided with a first mounting groove, a second mounting groove and a third mounting groove. The first mounting groove is arranged along the axial direction of the cutter body, and the second positioning assembly reciprocates in the third mounting groove, and one end of the first mounting groove away from the cutter body is communicated with the third mounting groove, so that the slider can extend out of the first mounting groove and into the third mounting groove. The first mounting groove is arranged along the axial direction of the cutter body, and the second positioning assembly reciprocates in the third mounting groove, and one end of the first mounting groove away from the cutter body is communicated with the third mounting groove, so that the slider can extend out of the first mounting groove and into the third mounting groove. The ultrasonic knife handle comprises the ultrasonic knife handle according to any one of claims 1-30.

31. An ultrasonic machining apparatus characterized by comprising: The ultrasonic machining device comprises a machine tool body, a main shaft arranged on the machine tool body, and the ultrasonic knife handle according to claim 31.

32. A machine tool characterized by comprising: ​

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