Knife handle and machine tool

Abstract

The utility model discloses a knife handle and a machine tool, and relates to the technical field of machining equipment, the knife handle comprises a knife handle body and an outer shell assembly, the outer shell assembly is provided with a first positioning assembly and a second positioning assembly, the second positioning assembly extends out of the outer shell assembly, the first positioning assembly can be driven to extend into a positioning groove, and the second positioning assembly can be driven to extend into the positioning groove. The knife handle body and the outer shell assembly are relatively static; the second positioning assembly moves relative to the outer shell assembly and can drive the first positioning assembly to act, so that the first positioning assembly is disengaged from the positioning groove, and the knife handle body and the outer shell assembly can rotate relative to each other. The ultrasonic knife handle is provided with the first positioning assembly and the second positioning assembly, so that the relative position of the knife handle can be fixed under the condition that the ultrasonic knife handle is separated from the main shaft, and the knife handle body can rotate relative to the positioning assemblies under the condition that the ultrasonic knife handle is connected into the main shaft.

Description

TECHNICAL FIELD

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

[0002] The tool holder structure of existing assembly is assembled to machine tool, and in its working process, the tool holder body of tool holder is driven to rotate by main shaft, and can relatively rotate with outer shell body. In order to install tool holder to main shaft, there is usually a preset position between tool holder body and outer shell body. When the corresponding preset position is met, tool holder can be connected to main shaft and be driven by main shaft. In the case where machining equipment replaces tool holder, tool holder is separated from main shaft, and tool holder body and outer shell body can relatively rotate, causing the relative position between tool holder body and outer shell body to change, so that tool holder no longer meets the preset position. When tool is reassembled, tool holder cannot be smoothly connected to main shaft, and manual intervention is required, which affects the automatic tool changing process of machining equipment. SUMMARY

[0003] The utility model aims at providing a kind of tool holder and machine tool, by making the relative position between tool holder and main shaft, ensure that tool holder can be applied to machining equipment to realize automatic tool changing, to solve the problem that existing tool holder is difficult to realize automatic tool changing.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A tool holder, comprising:

[0006] A tool holder body, a positioning groove is provided on the outer periphery side of the tool holder body;

[0007] An outer shell assembly, the outer shell assembly is rotatably sleeved on the outer periphery side of the tool holder body, and a first positioning assembly and a second positioning assembly capable of moving relative to the outer shell assembly are provided on the outer shell assembly. The first positioning assembly can be driven to extend into the positioning groove, so that the tool holder body and the outer shell assembly are relatively stationary. The second positioning assembly moves relative to the outer shell assembly to drive the first positioning assembly to act, so that the first positioning assembly is withdrawn from the positioning groove, so that the tool holder body and the outer shell assembly can relatively rotate. And,

[0008] The first positioning assembly comprises a swing block, and the swing block is rotatably connected with the outer shell assembly, so that the swing block can be driven to extend into the positioning groove or be withdrawn from the positioning groove.

[0009] In some embodiments, the first positioning assembly further comprises a sliding block, which is configured to reciprocally move towards the tool holder body on the outer periphery side of the tool holder body; and,

[0010] The swing block is rotationally connected to the slider away from the locating groove, and the slider is abutted to the second positioning assembly away from the shank body, so that the slider is driven to be close to the shank body, and the swing block is driven to rotate, so that the other end of the swing block is out of the locating groove.

[0011] 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 shank body, and the other end of the first elastic member is fixedly arranged.

[0012] In some embodiments, a pulley is rotationally connected to the end of the slider 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 shank body through the pulley.

[0013] In some embodiments, the second positioning assembly comprises a positioning column capable of moving along the axial direction of the shank body, and the end of the slider away from the shank body can be abutted to the positioning column to drive the swing block to be out of the locating groove.

[0014] In some embodiments, the second positioning assembly further comprises a limiting block connected to the front end of the positioning column, the limiting block is provided with a clearance recessed towards the inside of itself, and the slider can extend into the clearance away from the shank body, so as to drive the swing block to rotate and drive the swing block to extend into the locating groove.

[0015] In some embodiments, the outer circumferential side of the limiting block is provided with an inclined surface inclined to the axial direction of the shank 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.

[0016] 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.

[0017] In some embodiments, the outer housing assembly is provided with a first mounting groove and a third mounting groove, wherein,

[0018] The first mounting groove is arranged extending towards the shank body at the outer circumferential side of the shank body, and the slider can reciprocate in the first mounting groove;

[0019] The third installation slot is arranged along the axial direction of the shank body, and the second positioning assembly is capable of reciprocating in the third installation slot; and the first installation slot is communicated with the third installation slot away from the end of the shank body, so that the slider can extend out of the first installation slot into the third installation slot.

[0020] In some embodiments, the shank body is provided with a second installation slot arranged along the axial direction of the shank body, the front end of the second installation slot is communicated with the first installation slot, and the rear end of the second installation slot is communicated with the positioning slot; the swing block is rotationally connected in the second installation slot, and the rear end of the swing block extends out of the second installation slot.

[0021] Based on the foregoing shank, the utility model also provides a machine tool, including machine tool body, main shaft setting on the machine tool body and preceding shank.

[0022] Compared with the prior art, the shank and the machine tool implemented by the utility model have the beneficial effects that:

[0023] The shank of the utility model is provided with a limiting structure, so that the shank can move towards the shank and extend into the positioning slot through the first positioning assembly and the second positioning assembly when the shank is separated from the main shaft, the relative position of the shank and the outer shell assembly is fixed, the shank and the outer shell assembly remain relatively stationary, the limiting structure can be unlocked from the positioning slot when the shank is connected to the main shaft, the shank and the transducer shell can rotate relative to the outer shell assembly, and the normal operation of the ultrasonic shank is not affected.

[0024] Moreover, the first positioning assembly of the shank comprises a swing block, the relative state between the shank body and the outer shell assembly is realized through the swing of the swing block, compared with the linearly moving arrangement direction, the swing block adopts a rotationally arranged structure layout, the distance between the second positioning assembly and the shank body can be correspondingly reduced, the limiting structure composed of the first positioning assembly and the second positioning assembly is more suitable for small-size shank structures or shanks with a relatively large size of shank body, such as a shank structure provided with a wireless receiving assembly on the shank body, and the limiting structure can save more space and improve the space utilization of the outer shell assembly.

[0025] The utility model also provides a machine tool, which applies the foregoing shank and has the beneficial effects of the foregoing shank. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the schematic diagram of the ultrasonic shank in the utility model embodiment;

[0027] Figure 2 is the first matching schematic diagram of the shank and the transducer shell in the utility model embodiment;

[0028] Figure 3 is a second kind of cooperation schematic diagram of the handle and the transducer shell in the embodiment of the utility model;

[0029] Figure 4 is Figure 3 the schematic diagram of the transducer shell in the structure shown in figure 6;

[0030] Figure 5 is the top view of the ultrasonic knife handle in the embodiment of the utility model, and the position of the A-A section line is indicated;

[0031] Figure 6 is Figure 5 the sectional view of A-A in figure 7;

[0032] Figure 7 is Figure 6 the enlarged view of B in figure 7;

[0033] Figure 8 is Figure 6 the enlarged view of C in figure 7;

[0034] Figure 9 is Figure 6 the enlarged view of D in figure 7;

[0035] Figure 10 is the schematic diagram of the first insulating part in the embodiment of the utility model;

[0036] Figure 11 is Figure 6 the schematic diagram of the air flow path of the structure shown in figure 8;

[0037] Figure 12 is the schematic diagram of the flow guide part in the embodiment of the utility model;

[0038] Figure 13 is the schematic diagram of the air flow turbine in the embodiment of the utility model;

[0039] Figure 14 is Figure 6 the schematic diagram of the transducer shell in the structure shown in figure 10;

[0040] Figure 15 is the top view of the ultrasonic knife handle in the embodiment of the utility model, and the position of the E-E section line is indicated;

[0041] Figure 16 is Figure 15 the sectional view of E-E in figure 10;

[0042] Figure 17 is Figure 15 the enlarged view of F in figure 10;

[0043] Figure 18 is the schematic diagram of the second shell in the embodiment of the utility model;

[0044] Figure 19 is Figure 17 a schematic diagram of an air flow path of the structure shown in FIG.

[0045] Figure 20 is a top view of the ultrasonic knife handle in the embodiment of the utility model, indicating the position of G-G section line;

[0046] Figure 21 is Figure 20 sectional view of G-G in it;

[0047] Figure 22 is Figure 21 enlarged view of H in it;

[0048] Figure 23 is a schematic diagram of the second positioning assembly in the embodiment of the utility model;

[0049] Figure 24 is a sectional schematic diagram of the air flow seat in the embodiment of the utility model.

[0050] In the figure, 100, ultrasonic knife handle;

[0051] 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, first 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

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] Embodiment

[0057] 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.

[0058] 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.

[0059] It should be noted that in the prior art, the ultrasonic knife handle using wireless transmission for electrical signal transmission generally has an integrated handle body. 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.

[0060] 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.

[0061] It should be noted that the implementation mode of detachable connection between the blade body 1 and the transducer shell 2a is various, and the formation mode of the mounting portion 4 also has various modes. Generally, the mounting 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, thereby forming the mounting portion 4. At this time, the mounting 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 mounting portion 4 includes part of the structure of the blade body 1, the layout of the mounting portion 4 shrinking in the transducer shell 2a will be that the outer diameter of the mounting portion 4 is less than the outer diameter of other part of the structure of the transducer shell 2a adjacent to the mounting portion 4.

[0062] Alternatively, in the second preset case, the front end of the blade body 1 is provided with a detachable connection structure, the rear end of the transducer shell 2a is also provided with a detachable connection structure, and the two connection structures are detachably connected with each other, so that the detachable connection between the blade body 1 and the transducer shell 2a can be achieved, thereby forming the mounting 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, and the layout of the mounting portion 4 shrinking in the transducer shell 2a will be that the outer diameter of the connection structure is less than the outer diameter of the transducer shell 2a adjacent to the mounting portion 4.

[0063] 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, and the connection structure and the transducer shell 2a or the blade body 1 without the connection structure are detachably connected with each other, so that the detachable connection between the blade body 1 and the transducer shell 2a can be achieved, thereby forming the mounting 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, and the layout of the mounting portion 4 shrinking in the transducer shell 2a will be that the outer diameter of the connection structure is less than the outer diameter of the transducer shell 2a adjacent to the mounting portion 4.

[0064] The ultrasonic knife handle 100 of the embodiment will be further described below taking the first preset case as an example.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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:

[0070] First, with reference to Figure 2 , the outer diameter of the first protruding part 1a is greater than the outer diameter of the second protruding part 2a3, a first mounting hole 1a1 is provided in the tool body 1 and penetrates the first protruding part 1a and the body part 1b along 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 part 2a3 extends towards the rear side along the axial direction of the tool body 1, and a second mounting hole 2a4 is provided in the second protruding part 2a3 and extends along the axial direction of the tool body 1, the second protruding part 2a3 extends into the first mounting hole 1a1 and is located in front of the limiting ring 1a10, the position of the second protruding part 2a3 along the axial direction of the tool body 1 is limited by the limiting ring 1a10, so that the second protruding part 2a3 is mounted in the first mounting hole 1a1, and the first protruding part 1a is wrapped around the outer circumferential side of the second protruding part 2a3, thereby forming the connection between the second protruding part 2a3 and the first protruding part 1a, i.e. the mounting part 4;

[0071] Second, with reference to Figures 3-4 , the outer diameter of the first protruding part 1a is less than the outer diameter of the second protruding part 2a3, the first protruding part 1a extends towards the front side along 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 part 1a and the body part 1b along the axial direction of the tool body 1; and the second protruding part 2a3 extends towards the rear side along the axial direction of the tool body 1, and the transducer shell 2a is provided with a second mounting hole 2a4 extending along 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 part 1a is mounted in the large-diameter section 2a40 of the second mounting hole 2a4, so that the second protruding part 2a3 is wrapped around the outer circumferential side of the first protruding part 1a, and the connection between the second protruding part 2a3 and the first protruding part 1a, i.e. the mounting part 4, is formed.

[0072] During the operation 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 along 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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, on the outer circumferential side of the blade body 1, and 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 to make the transducer 2b work.

[0078] It should be noted that the wireless receiving assembly 3 connected to the outer circumferential side of the body portion 1b 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.

[0079] It should be noted that since the wireless receiving assembly 3 is arranged on the rear side of the mounting portion 4 and the transducer 2b is arranged on the front side of the mounting portion 4, 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.

[0080] 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.

[0081] 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 arranged 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 arranged in the blade body 1.

[0082] 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.

[0083] 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 When 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 to enable the wireless receiving assembly 3 and the transducer 2b to communicate.

[0084] 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 , 9-10, as an example of the embodiment, an insulating member 12 is provided in the transducer housing 2a, and the insulating member 12 is arranged on the outer circumferential side of the transducer 2b and is arranged spaced apart from the transducer 2b. Also, in order to avoid the electrical 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 an electric spark, the outer side of the insulating member 12 can be provided with a wire groove 15 that is communicated to the inner side of the insulating member 12 and is communicated with the third electrical connection passage 11 and also communicated with the second electrical connection passage 7. In this way, after the electrical wire between the transducer 2b and the wireless receiving assembly 3 enters the inner cavity 2a1, it will enter the wire groove 15 and extend along the wire groove 15. At this time, the electrical wire is separated from the transducer 2b by the insulating member 12, thereby ensuring the safety of the electrical wire arranged in the transducer housing 2a.

[0085] It should be noted that the electrical wire between the transducer 2b and the wireless receiving assembly 3 is connected to the wiring port of the transducer 2b, so the electrical wire can extend along the wire groove 15 to a position opposite 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 electrical 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.

[0086] 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 2b1, and referring to Figure 10 , the insulating member 12 can extend to the back side of the piezoelectric vibrator 2b1, thereby wrapping the piezoelectric vibrator 2b1 inside. In this case, the wire groove 15 can extend from the back end of the piezoelectric vibrator 2b1 to the outer circumferential side of the piezoelectric vibrator 2b1, and the projections of the first conductive member 9 and the second conductive member 10 in the axial direction, i.e. the front-rear direction, of the tool body 1 are located in the wire groove 15, so that the electrical wire between the transducer 2b and the wireless receiving assembly 3 can enter the wire groove 15 in the axial direction of the tool body 1 after entering the inner cavity 2a1, so as to control the length of the electrical wire inside the inner cavity 2a1.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] The first cooling gas path 14 needs to be communicated with the external cooling gas source, which usually cooperates with a gas pipe or a gas channel. In order to avoid the gas pipe or the 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.

[0091] 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 reason, the first cooling gas path 14 is connected to the inner cavity 2a1 of the transducer shell 2a through the bearing gland 21, which can avoid the above problems. 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.

[0092] 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 can flow to 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] Reference is made to Figure 13, the airflow turbine 19 can adopt the structural layout of a turbine, 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 airflow turbine 19 and the transducer shell 2a are designed in a split body, which is beneficial to the machining of the airflow turbine 19. Of course, as an example of the present embodiment, the airflow 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.

[0100] 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, so that the outer shell assembly 5 is 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 also 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 that the occupied space of the outer shell assembly 5 outside the knife body 1 and the transducer shell 2a can be reduced, and the first cooling gas path 14 is closer to the transducer shell 2a. The distance of the cold air input from the external cooling gas source to the inside of the transducer shell 2a is shorter, which reduces the loss of the cold air in the flow process and improves the flow rate of the cold air entering the inside of the transducer shell 2a, so that the heat generated by the transducer 2b is more easily taken away.

[0101] 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 usually 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.

[0102] 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 of them 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 sleeved on the first protruding portion 1a, so that the bearing 8 is connected and fixed with the blade body 1. In this way, the bearing 8 and the transducer shell 2a are both taken as the assembly reference of the blade body 1, so as to effectively reduce the error accumulation caused by assembly, improve the assembly precision of the bearing 8, the outer shell assembly 5 and the transducer shell 2a, and make the ultrasonic knife handle 100 operate better in the case of high-speed rotation. Secondly, the inner ring of the bearing 8 is sleeved on the second protruding portion 2a3, so that the bearing 8 is connected and fixed with the transducer shell 2a, and the assembly of the bearing 8 and the mounting portion 4 can be realized.

[0103] In the case of high-speed rotation of the ultrasonic knife handle 100, the inner ring of the bearing 8 rotates at high speed with the blade body 1, so that the inner ring and the outer ring of the bearing 8 generate a large amount of friction, causing the bearing 8 to heat seriously. Since the first cooling gas path 14 is arranged in the outer shell assembly 5, the bearing 8 can be cooled by the first cooling gas path 14. Referring to Figures 6-14 As an example of the embodiment, the outer shell assembly 5 includes a bearing sleeve 5a and an airflow seat 5b. The bearing sleeve 5a is connected to the outer ring of the bearing 8, extends to the outer circumferential side of the transducer shell 2a, and forms a first channel 14a with the transducer shell 2a and the sealing cover plate 44. The airflow seat 5b is connected to the outer circumferential side of the bearing sleeve 5a and forms a second channel 14b with the bearing sleeve 5a. The first channel 14a and the second channel 14b are communicated, and the airflow seat 5b is provided with a first air inlet channel 14c communicated with an external cooling gas source. The first air inlet channel 14c and the second channel 14b are communicated in sequence to form the first cooling gas path 14.

[0104] The bearing sleeve 5a is usually made of metal material, so the bearing sleeve 5a connected to the outer ring of the bearing 8 can absorb part of the heat generated by the bearing 8, and has a certain cooling effect on the bearing 8. Moreover, the cold gas supplied by the external cooling gas source enters the second channel 14b through the first air inlet channel 14c. Since the bearing sleeve 5a and the airflow seat 5b surround the second channel 14b, the cold gas and the bearing sleeve 5a perform the first heat exchange, so as to take away the heat of the bearing sleeve 5a, reduce the temperature of the bearing sleeve 5a, increase the temperature difference between the bearing 8 and the bearing sleeve 5a, and further make the heat generated by the bearing 8 be absorbed by the bearing sleeve 5a, so as to cool the bearing 8. Moreover, under the cooperation of the airflow turbine 19, the airflow turbine 19 can rotate at high speed with the transducer shell 2a in the case of high-speed rotation of the ultrasonic knife handle 100. Under the action of the airflow turbine 19, the cold gas accelerates through the air inlet hole 16a, so that the flow rate of the cold gas is faster, and the heat dissipation effect of the cold gas on the transducer 2b is further improved, so as to make up for the loss of cold quantity of the cold gas which has performed the first heat exchange before cooling the transducer 2b.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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 the 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.

[0109] 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.

[0110] 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 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.

[0111] 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.

[0112] 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 a second cooling gas path 27 independent of the first cooling gas path 14.

[0113] 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.

[0114] 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 be discharged from the transducer shell 2a through the exhaust hole 16b, then enter the fourth channel 24, and 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.

[0115] The shell assembly 5 further comprises a second shell 25 arranged on the outer circumferential side of the first shell 23 to form a third passage 26 with the first shell 23, and a gas jet opening 26a is formed on the third passage 26 to communicate with the outside, and the second gas guide pipe 30 communicates with the nozzle 28 through the gas jet opening 26a.

[0116] 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 be communicated 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 to exchange heat with the tool 43.

[0117] The tool 43 of the ultrasonic tool holder 100 can exchange heat with two cooling gas paths, one of which is the cooling gas flowing to the exhaust port 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 tool holder 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.

[0118] 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 in the axial direction of the tool body 1, and then flow in 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 in the circumferential direction of the amplitude rod 42 to fully 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 to enable the cooling gas to fully contact the tool 43.

[0119] 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 shell 23 and the second shell 25. For example, the rear end of the second shell 25 is fixedly connected with the air flow seat 5b, the first shell 23 is fixedly arranged in the second shell 25 by the thermal insulation material, and in order to enable the first air duct 29 to be fixed, a support is arranged in the second shell 25, so that the first air duct 29 is fixed on the second shell 25.

[0120] It should be noted that the first cooling air path 14 and the second cooling air path 27 are also applicable to the ultrasonic knife handle 100 in which the knife body 1 and the transducer shell 2a are in an integrated structure. In the ultrasonic knife handle in which the knife 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 knife handle 100, which will not be described again here.

[0121] In the working process of the ultrasonic knife handle 100, the main shaft of the machining tool is connected to the rear side of the knife body 1 to drive the rotation of the knife body 1, and the outer shell assembly 5 remains stationary relative to the knife body 1 during the rotation of the knife body 1. However, since the knife body 1 can rotate relative to the outer shell assembly 5, after the knife body 1 is disconnected from the main shaft, the relative rotation between the knife body 1 and the outer shell assembly 5 will occur, which will cause the knife body 1 to deviate from the position of being connected to the main shaft, and thus when the ultrasonic knife handle 100 is connected again, the main shaft cannot be aligned with the knife body 1, resulting in that the machining tool cannot be changed. In view of this situation, a limiting structure can be arranged on the ultrasonic knife handle 100 to limit the relative rotation between the knife body 1 and the outer shell assembly 5 when the knife body 1 is disconnected from the main shaft.

[0122] Reference Figures 20-24 As an example of the present embodiment, the outer periphery of the knife body 1 is fixedly connected with a receiving groove 31, the wireless receiving assembly 3 is arranged in the receiving groove 31, and a positioning groove 32 is formed in the outer periphery of the receiving groove 31.

[0123] 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 disengaged from the positioning groove 32, so that the receiving groove 31 and the outer shell assembly 5 can rotate relative to each other, that is, the knife body 1 and the outer shell assembly 5 can rotate relative to each other; 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 knife body 1 and the outer shell assembly 5 are relatively stationary.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] 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 present 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.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] In order to drive the second positioning assembly 34 to act, and ensure that the second positioning assembly 34 can realize its function, with reference 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 can be applied with a force to move 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 when the tool handle is installed on the main shaft, which has been described above.

[0137] 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. With reference 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.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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, the second positioning assembly 34 is driven to move towards the front end of the cutter body 1, and when 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] Based on the foregoing ultrasonic tool shank 100, the embodiment further provides an ultrasonic machining equipment comprising the foregoing ultrasonic tool shank 100.

[0146] 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.

[0147] In summary, the ultrasonic tool shank 100 provided by the embodiment connects the tool body 1 and the transducer shell 2a in a detachable manner, thereby forming a mounting portion 4 at the connecting position of the tool body 1 and the transducer shell 2a. The mounting portion 4 is retracted into 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.

[0148] 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.

[0149] 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. Moreover, 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.

[0150] 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.

[0151] 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.

[0152] 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.

[0153] 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.

[0154] The above only describes the preferred embodiments of the present application, and it should be noted that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and replacements can be made, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A shank characterized in that, The utility model relates to a tool handle assembly and a tool handle, and the tool handle assembly comprises: a tool handle body, the outer circumferential side of the tool handle body is provided with a positioning groove; an outer shell assembly, the outer shell assembly is rotationally sleeved on the outer circumferential side of the tool handle body, 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, and the first positioning assembly can be driven to extend into the positioning groove, so that the tool handle body is relatively stationary with the outer shell assembly; the second positioning assembly moves relative to the outer shell assembly and can drive the first positioning assembly to act, so that the first positioning assembly is withdrawn from the positioning groove, so that the tool handle body can rotate relative to the outer shell assembly; and the first positioning assembly comprises a swing block, and the swing block is rotationally connected with the outer shell assembly, so that the swing block can be driven to extend into the positioning groove or be withdrawn from the positioning groove.

2. The tool holder according to claim 1, characterized in that The first positioning assembly further comprises a sliding block, and the sliding block is configured to reciprocate on the outer circumferential side of the tool handle body towards the tool handle body; and one end of the swing block away from the positioning groove is rotationally connected with the sliding block, and one end of the sliding block away from the tool handle body abuts against the second positioning assembly, so that the sliding block is driven to move close to the tool handle body and can drive the swing block to rotate, so that the other end of the swing block is withdrawn from the positioning groove.

3. The tool holder according to claim 2, characterized in that The outer shell assembly is further provided with a first elastic member, and one end of the first elastic member abuts against one end of the sliding block close to the tool handle body, and the other end of the first elastic member is fixedly arranged.

4. The tool holder according to claim 2, wherein One end of the sliding block 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 sliding block, so that the pulley is in rolling contact with the second positioning assembly, so that the second positioning assembly can drive the sliding block to move close to the tool handle body through the pulley.

5. The tool holder according to claim 2, wherein The second positioning assembly comprises a positioning column capable of moving along the axial direction of the tool handle body, and one end of the sliding block away from the tool handle body can abut against the positioning column to drive the swing block to be withdrawn from the positioning groove.

6. The tool holder according to claim 5, characterized in that The second positioning assembly further comprises a limiting block connected to the front end of the positioning column, the limiting block is provided with a clearance recessed towards the inside of the limiting block, and the sliding block can move away from the tool handle body and extend into the clearance, so as to drive the swing block to rotate and be extended into the positioning groove.

7. The tool holder according to claim 6, characterized in that The outer circumferential side of the limiting block is provided with an inclined surface inclined to the axial direction of the tool handle body, the inclined surface is arranged on 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.

8. The tool holder according to claim 5, wherein The outer shell assembly is further provided with a second elastic member, one end of the second elastic member abuts against the front end of the second positioning assembly, and the other end of the second elastic member is fixedly arranged.

9. The tool holder according to claim 2, wherein The outer shell assembly is provided with a first mounting groove and a third mounting groove, wherein the first mounting groove is arranged extending towards the tool handle body on the outer circumferential side of the tool handle body, and the sliding block can reciprocate in the first mounting groove; the third mounting groove is arranged extending towards the tool handle body on the outer circumferential side of the tool handle body, and the first positioning assembly can reciprocate in the third mounting groove. The third installation slot is arranged along the axial direction of the shank body, and the second positioning assembly is capable of reciprocating in the third installation slot; and the first installation slot is communicated with the third installation slot away from the end of the shank body, so that the slider can extend out of the first installation slot into the third installation slot.

10. The tool holder according to claim 9, characterized in that The second installation slot is arranged along the axial direction of the shank body on the outer housing assembly, the front end of the second installation slot is communicated with the first installation slot, and the rear end of the second installation slot is communicated with the positioning slot; the swing block is rotationally connected in the second installation slot, and the rear end of the swing block extends out of the second installation slot.

11. A machine tool, characterized by The tool holder comprises a machine tool body, a main shaft arranged on the machine tool body, and the tool holder according to any one of claims 1-10.

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