Ultrasonic cutter handle, ultrasonic machining equipment and machine tool

Abstract

The invention relates to the technical field of machining, and discloses an ultrasonic cutter handle, ultrasonic machining equipment and a machine tool, the ultrasonic cutter handle comprises a cutter body and a connecting sleeve, the cutter body is provided with a second end and a first end which are oppositely arranged in the front-back direction, the first end is suitable for being connected and matched with a main shaft, and the second end is provided with a mounting cavity used for containing a transducer; a wireless receiving unit is arranged on the periphery of the cutter body; the connecting sleeve is connected to the second end and is coaxially arranged with the cutter body; the outer shell is arranged on the peripheral side of the connecting sleeve in a sleeving mode through a bearing, and the inner diameter size of the bearing is smaller than or equal to the outer diameter size of the second end. Therefore, the bearing is arranged between the connecting sleeve and the outer shell, the bearing does not occupy the peripheral side space of the cutter body, the axial size of the cutter body can be reduced, the rigidity of the cutter body can be improved, the overall axial size of the ultrasonic cutter handle can be reduced, the structural size of the transducer can be increased, and the radial size of the bearing can be reduced; therefore, the ultrasonic machining performance can be improved.

Description

Technical Field

[0001] The present application relates to the field of mechanical processing technology, and in particular to an ultrasonic tool holder, an ultrasonic processing device, and a machine tool. Background Art

[0002] When producing and processing parts, the machine tool can use ultrasonic machining equipment to process the part blanks. Specifically, the machine tool supplies power to the transducer installed in the ultrasonic tool holder of the ultrasonic machining equipment, causing the transducer to generate ultrasonic vibrations, thereby driving the tool installed in the ultrasonic tool holder to vibrate, thereby allowing the tool to process the part blank under high-frequency vibration.

[0003] In the related art, after the existing ultrasonic toolholder is connected to the spindle of the machine tool, the spindle drives the tool at the front end of the ultrasonic toolholder to rotate. The bearing of the existing ultrasonic toolholder is set on the outer peripheral side of the transducer housing. The transducer housing needs to reserve a certain position for the bearing, which causes the overall axial dimension of the ultrasonic toolholder to be extended, resulting in a decrease in the rigidity of the toolholder, a decrease in the machining accuracy and efficiency of the machine tool, and a longer torque, which increases the force on the tool and reduces the tool life. In addition, since the bearing occupies the space on the outer peripheral side of the transducer housing, not only will the installation space of the transducer be limited, resulting in a reduction in the power of the transducer, but the radial dimension of the bearing will also be too large to operate at high speed for a long time, thereby affecting the machining performance of the ultrasonic machining equipment. Summary of the Invention

[0004] The purpose of this application is to improve the rigidity of the tool body, reduce the overall axial size of the ultrasonic tool handle, increase the structural size of the transducer, and reduce the radial size of the bearing, thereby improving the ultrasonic machining performance.

[0005] In order to achieve the above objectives, the present application provides an ultrasonic knife handle.

[0006] The present application further proposes an ultrasonic machining device.

[0007] The present application further proposes a machine tool.

[0008] According to the present application, the ultrasonic knife handle includes: a fixing assembly and a knife body assembly, the knife body assembly is rotatably arranged in the fixing assembly; the knife body assembly includes a knife body and a connecting sleeve, the knife body has a second end and a first end arranged opposite to each other in the front-to-back direction, the first end is suitable for connecting and cooperating with the main shaft, and the second end is provided with a mounting cavity for accommodating a transducer; a wireless receiving unit is provided on the periphery of the knife body, and the wireless receiving unit is electrically connected to the transducer; the connecting sleeve is connected to the second end and is coaxially arranged with the knife body; the fixing assembly includes an outer shell, and the outer shell is arranged on the outer peripheral side of the connecting sleeve through a bearing, wherein the inner diameter of the bearing is less than or equal to the outer diameter of the second end.

[0009] According to the ultrasonic tool shank of the present application, by arranging the bearing of the ultrasonic tool shank between the connecting sleeve and the outer housing, the bearing does not occupy the outer peripheral space of the tool body, the axial dimension of the tool body can be reduced, thereby improving the rigidity of the tool body, reducing the overall axial dimension of the ultrasonic tool shank, prolonging the tool life, and having a small circular runout at the tool end, and further improving the machining accuracy of the machine tool. Further, the structural size of the transducer that the tool body can install is larger, achieving a larger ultrasonic power. And because the radial dimension of the horn is smaller, the radial dimension of the connecting sleeve for installing the horn is smaller. When the bearing is arranged on the outer peripheral side of the connecting sleeve, compared with arranging the bearing on the outer peripheral side of the tool body, the radial dimension of the bearing of the present application is smaller, which can enable the bearing to operate at high speed for a long time, thereby improving the machining performance of the ultrasonic machining equipment and enhancing the product quality of the machine tool.

[0010] In some examples of the present application, the ultrasonic tool shank further includes a tool change ring disposed between the wireless receiving unit and the outer housing. The tool change ring is sleeved on the outer peripheral side of the tool body. A tool change groove is provided on the side wall of the tool change ring away from the tool body, and the tool change groove extends along the circumferential direction of the tool body.

[0011] In some examples of the present application, the tool body is provided with a first stop portion, and the tool change ring is provided with a second stop portion. The first stop portion and the second stop portion are abutted and fixedly connected.

[0012] In some examples of the present application, the fixing assembly further includes an outer box assembly. The outer box assembly is fixed to the rear end of the outer housing. The outer box assembly is provided with a first air inlet flow channel, and the first air inlet flow channel is adapted to be connected to an external air source; a bearing cooling flow channel surrounding the outer peripheral side of the bearing is provided between the bearing and the outer housing. The bearing cooling flow channel can be communicated with the external environment to form a bearing cooling branch; the first air inlet flow channel is communicated with the bearing cooling branch.

[0013] In some examples of the present application, an installation gap is formed by spacing the bearing from the outer housing. A bearing cooling member is installed in the installation gap. A diversion groove is formed on the outer periphery of the bearing cooling member, and the diversion groove is spirally arranged on the outer surface side of the bearing cooling member with the front-rear direction as the axial direction. The diversion groove and the outer housing enclose the bearing cooling flow channel.

[0014] In some examples of the present application, the installation cavity can be communicated with the outside to form a transducer cooling branch, and the first air inlet channel is also communicated with the transducer cooling branch.

[0015] In some examples of the present application, the ultrasonic tool handle further includes a flow guiding member located between the outer box assembly and the wireless receiving unit. The flow guiding member includes a flange portion and an air flow turbine fixedly connected. A gap is provided between the flange portion and the outer box assembly. The flange portion is fixedly sleeved on the outer peripheral side of the tool body, and a communication flow channel is formed by spacing the flange portion apart from the tool body. The communication flow channel is communicated with the first air inlet flow channel; the air flow turbine includes at least one blade, and the blade is arranged in the communication flow channel and extends along the radial direction of the tool body towards the tool body; the tool body is provided with a communication hole communicating the communication flow channel and the installation cavity, so that the first air inlet flow channel is communicated with the installation cavity.

[0016] In some examples of the present application, the outer box assembly and the connecting sleeve or the tool body are spaced apart along the radial direction of the connecting sleeve to form a diversion flow channel, and there is a gap between the rear end portion of the outer box assembly and the tool body. The diversion flow channel has an air inlet end and an air outlet end. The air inlet end is communicated with the first air inlet flow channel, and the air outlet end is respectively communicated with the bearing cooling branch and the transducer cooling branch, so that the cooling air flow can enter the transducer cooling branch and the bearing cooling branch respectively.

[0017] In some examples of the present application, the outer box assembly further defines a second air inlet flow channel. An annular spray flow channel is formed at the end of the outer shell away from the main shaft, and an over-flow channel is provided on the outer shell. The second air inlet flow channel is communicated with the annular spray flow channel through the over-flow channel. The second air inlet flow channel is adapted to be connected and cooperated with an external air source, and the annular spray flow channel can be connected with a cooling nozzle.

[0018] In some examples of the present application, at least a part of the outer peripheral wall of the tool body assembly is provided with a first friction area; a braking mechanism is installed in the fixing assembly. The braking mechanism includes a friction member, and the braking mechanism is adapted to switch between a first trigger state and a second trigger state. The friction member has a second friction area opposite to the first friction area; in the first trigger state, the friction member is driven to abut against the tool body assembly, so that the second friction area contacts the first friction area to brake the tool body assembly; in the second trigger state, the friction member is driven to be separated from the tool body assembly, so that a gap is formed by spacing the second friction area apart from the first friction area to unlock the tool body assembly.

[0019] In some examples of the present application, the braking mechanism further includes a transmission rod, which can reciprocate within the fixed component to move closer to or away from the tool body component. The friction member is provided at one end of the transmission rod close to the tool body component. When the braking mechanism switches between the first trigger state and the second trigger state, the transmission rod drives the friction member to move closer to or away from the tool body component, so that the friction member abuts against or separates from the tool body component.

[0020] In some examples of the present application, the braking mechanism further includes a trigger member, which drives the transmission rod to move away from the tool body component when it is actuated.

[0021] In some examples of the present application, the trigger member extends along the axial direction of the tool body component. When the braking mechanism switches from the first trigger state to the second trigger state, the trigger member moves closer to the transmission rod, and the trigger member drives the transmission rod to move away from the tool body component, so that the friction member is driven to separate from the tool body component.

[0022] In some examples of the present application, the fixed component defines a first installation channel and a second installation channel. The first installation channel extends along the radial direction of the tool body component, and the second installation channel extends along the axial direction of the tool body component. The first installation channel and the second installation channel communicate with each other. The transmission rod is movably arranged in the first installation channel, and the trigger member is movably arranged in the second installation channel.

[0023] In some examples of the present application, a pulley is provided at one end of the transmission rod away from the friction member. The pulley is in abutting cooperation with one end of the trigger member close to the transmission rod. When the trigger member moves closer to the transmission rod, the pulley can move along the trigger member to drive the transmission rod to move away from the tool body component.

[0024] In some examples of the present application, the side wall of the trigger member that abuts against the pulley is provided with an abutting inclined surface, which is inclined towards the tool body component in the direction from the rear side to the front side of the ultrasonic tool handle.

[0025] In some examples of the present application, the pulley is mounted on the transmission rod through a pulley bracket. The pulley bracket extends away from the transmission rod along the axial direction of the transmission rod. The pulley is pivotally mounted on the pulley bracket, and a clearance is formed between the pulley and the end of the pulley bracket close to the transmission rod. The trigger member extends into the clearance.

[0026] In some examples of the present application, the braking mechanism further includes an elastic member, which is elastically deformably connected between the transmission rod and the fixed assembly. When the braking mechanism switches from the second trigger state to the first trigger state, the elastic member drives the transmission rod to move closer to the tool body assembly, so that the friction member is driven to abut against the tool body assembly.

[0027] In some examples of the present application, the friction member includes a friction plate and a mounting block. The friction plate is mounted on the side wall of the mounting block close to the tool body assembly, and the side wall of the friction plate opposite to the tool body assembly is configured as the second friction area.

[0028] In some examples of the present application, the first friction area is constituted by the annular outer peripheral wall of the tool body assembly, or the first friction area includes an annular friction assembly fixed to the outer periphery of the tool body assembly.

[0029] The ultrasonic machining equipment according to the present application includes the above ultrasonic tool shank.

[0030] According to the ultrasonic machining equipment of the present application, the ultrasonic machining equipment is provided with an ultrasonic tool shank. By arranging the bearing of the ultrasonic tool shank between the connecting sleeve and the outer housing, the bearing does not occupy the outer peripheral side space of the tool body, the axial dimension of the tool body can be reduced, thereby the rigidity of the tool body can be improved, the overall axial dimension of the ultrasonic tool shank can be reduced, the tool life can be prolonged, and the circular runout at the tool end is small, and further the machining accuracy of the machine tool can be improved. Further, the structural dimension of the transducer that the tool body can install is larger, and a larger ultrasonic power can be achieved. And because the radial dimension of the horn is smaller, the radial dimension of the connecting sleeve for installing the horn is smaller. When the bearing is arranged on the outer peripheral side of the connecting sleeve, compared with arranging the bearing on the outer peripheral side of the tool body, the radial dimension of the bearing of the present application is smaller, which can enable the bearing to operate at high speed for a long time, and further improve the machining performance of the ultrasonic machining equipment and enhance the product quality of the machine tool.

[0031] The machine tool according to the present application includes: a machine tool body; a main shaft, the main shaft is installed on the machine tool body, and the machine tool body is used to drive the main shaft to rotate around the central axis of the main shaft; the above ultrasonic machining equipment, and the ultrasonic tool shank of the ultrasonic machining equipment is connected to the main shaft.

[0032] For the machine tool according to the present application, the machine tool is provided with an ultrasonic machining device, and the ultrasonic machining device is provided with an ultrasonic tool shank. By arranging the bearing of the ultrasonic tool shank between the connecting sleeve and the outer housing, the bearing does not occupy the outer peripheral side space of the tool body, the axial dimension of the tool body can be reduced, thereby the rigidity of the tool body can be improved, the overall axial dimension of the ultrasonic tool shank can be reduced, the tool life can be prolonged, and the circular runout at the tool end is small, and thus the machining accuracy of the machine tool can be improved. Further, the structural dimension of the transducer that can be installed on the tool body is larger, achieving a larger ultrasonic power. And since the radial dimension of the horn is small, the radial dimension of the connecting sleeve for installing the horn is small. When the bearing is arranged on the outer peripheral side of the connecting sleeve, compared with arranging the bearing on the outer peripheral side of the tool body, the radial dimension of the bearing of the present application is smaller, which can enable the bearing to operate at high speed for a long time, and thus the machining performance of the ultrasonic machining device is improved, and the product quality of the machine tool is enhanced.

[0033] Compared with the prior art, the beneficial effects of an ultrasonic tool shank, an ultrasonic machining device and a machine tool implemented in the present application are as follows:

[0034] 1. By arranging the bearing of the ultrasonic tool shank between the connecting sleeve and the outer housing, the bearing does not occupy the outer peripheral side space of the tool body, the axial dimension of the tool body is not affected, thereby the rigidity of the tool body can be improved and the overall axial dimension of the ultrasonic tool shank can be reduced, and thus the machining accuracy of the machine tool can be improved. Moreover, since the radial dimension of the tool body is not affected, the structural dimension of the transducer that can be installed in the tool body is larger. And since the radial dimension of the horn is small, the radial dimension of the connecting sleeve for installing the horn is small. When the bearing is arranged on the outer peripheral side of the connecting sleeve, compared with arranging the bearing on the outer peripheral side of the tool body, the radial dimension of the bearing of the present application is smaller, which can enable the bearing to operate at high speed for a long time, and thus the machining performance of the ultrasonic machining device is improved.

[0035] 2. By arranging a first air inlet channel in the fixing component of the ultrasonic tool shank, arranging a transducer cooling branch in the tool body component, and arranging a bearing cooling branch on the outer peripheral side of the bearing, after the external air source provides cooling gas into the first air inlet channel, the cooling gas is split into the transducer cooling branch and the bearing cooling branch. The cooling gas can exchange heat with the transducer and the bearing, and the cooled gas after heat exchange is discharged to the external environment, thereby the heat generated during the operation of the transducer and the bearing can be conducted to the external environment, preventing the transducer and the bearing from overheating due to excessive heat accumulation, and thus preventing the transducer and the bearing from being damaged by overheating, and improving the stability of the ultrasonic tool shank during long-term operation.

[0036] 3. During the process of replacing the ultrasonic tool shank on the machine tool or when the ultrasonic tool shank is idle, by making the friction member abut against the tool body assembly, relative rotation between the two is prevented, and the tool body assembly and the fixing assembly are braked by the frictional force between the first friction area and the second friction area. Compared with the way of braking the tool body assembly by the cooperation of the locking pin and the locking groove, the braking mechanism in this application adopts non-rigid contact with the tool body assembly. The side wall of the friction member can buffer and absorb energy, with better impact adaptability, and can also reduce the magnitude of the impact force transmitted to the tool body assembly and the fixing assembly. Moreover, the assembly accuracy of the braking mechanism in the embodiment of this application is relatively low compared with rigid connection, so it is relatively easy to manufacture, and the first friction area and the second friction area wear evenly, which can reduce the wear speed of the braking mechanism and avoid setting up easily worn card slots, thereby improving the product quality of the ultrasonic processing equipment and extending the service life of the ultrasonic tool shank. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic diagram of the ultrasonic processing equipment according to an embodiment of the present application;

[0038] Figure 2 is a cross-sectional view of the ultrasonic processing equipment according to an embodiment of the present application;

[0039] Figure 3 is a schematic diagram of the ultrasonic tool shank according to an embodiment of the present application;

[0040] Figure 4 is a top view of the ultrasonic tool shank according to an embodiment of the present application;

[0041] Figure 5 is Figure 4 a cross-sectional view taken along line A-A in

[0042] Figure 6 is Figure 4 a cross-sectional view taken along line B-B in

[0043] Figure 7 is Figure 4 a cross-sectional view taken along line C-C in

[0044] Figure 8 is a schematic diagram of the tool changing ring according to an embodiment of the present application;

[0045] Figure 9 is a schematic diagram of the flow guiding member according to an embodiment of the present application;

[0046] Figure 10 is a schematic diagram of the outer housing according to an embodiment of the present application;

[0047] Figure 11 is a top view of the connecting bracket according to an embodiment of the present application;

[0048] Figure 12 is Figure 11 a cross-sectional view taken along line D-D in

[0049] Figure 13 It is a schematic diagram of a partial structure of the ultrasonic tool handle according to an embodiment of the present application;

[0050] Figure 14 It is a sectional view of a partial structure of the ultrasonic tool handle according to an embodiment of the present application;

[0051] Figure 15 It is a schematic diagram of the braking mechanism according to an embodiment of the present application;

[0052] Figure 16 It is a schematic diagram of the friction member according to an embodiment of the present application;

[0053] Figure 17 It is a front view of the trigger member according to an embodiment of the present application.

[0054] In the figure, 1000 is an ultrasonic processing device; 100 is an ultrasonic tool handle; 200 is a transducer; 300 is a horn; 400 is a tool; 500 is a tool body assembly; 600 is a fixing assembly;

[0055] 1 is a tool body; 11 is a mounting cavity; 12 is a communication hole; 13 is a receiving groove; 14 is a positioning notch; 15 is a first stop portion; 16 is a first friction area;

[0056] 2 is a wireless receiving unit;

[0057] 3 is a connecting sleeve; 31 is an avoidance hole; 32 is a mounting portion; 33 is a first stop surface;

[0058] 4 is an outer housing; 41 is an annular spray channel; 411 is an annular spray groove; 412 is a flow-through channel; 42 is a second exhaust port;

[0059] 5 is a bearing; 51 is a bearing cooling channel; 511 is a diversion groove; 52 is a bearing cooling member; 521 is a cooling member body; 522 is a diversion rib; 53 is a bearing end cover; 531 is a second stop surface; 54 is a bearing pressing portion;

[0060] 6 is a tool change ring; 61 is a tool change groove; 62 is a second stop portion;

[0061] 7 is an outer box body assembly; 71 is a first air inlet; 72 is a first air inlet channel; 73 is a diversion channel; 74 is a second air inlet; 75 is a second air inlet channel; 76 is a connecting pipe; 77 is a side housing; 78 is a cover plate; 79 is a first installation channel; 710 is a second installation channel; 711 is a movable ring groove;

[0062] 8 is a flow guide member; 81 is a flange portion; 82 is an air flow turbine; 821 is a blade; 83 is a communication flow channel;

[0063] 9 is a connecting bracket; 91 is a connecting hole;

[0064] 10. Braking mechanism; 101. Friction member; 1011. Friction plate; 1012. Mounting block; 1013. Second friction area; 102. Transmission rod; 103. Trigger member; 1031. Stop inclined surface; 104. Pulley; 105. Pulley bracket. Specific embodiments

[0065] The following will further describe in detail the specific embodiments of the present application in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0066] As Figures 1 - 17 shown, an ultrasonic machining device 1000 and an ultrasonic tool shank 100 are disclosed in an embodiment of the present application. The ultrasonic machining device 1000 includes an ultrasonic tool shank 100 and a tool 400. As Figure 1 , Figure 2 shown, the ultrasonic tool shank 100 includes a tool body assembly 500 and a fixing assembly 600. The tool body assembly 500 is rotatably arranged in the fixing assembly 600. A transducer 200 and a horn 300 are provided in the tool body assembly 200. The horn 300 is mounted at the front end of the transducer 200. The horn 300 extends out of the tool body assembly 500 from the end of the tool body assembly 500 away from the spindle, and a tool 400 is mounted at the end of the horn 300 outside the tool body assembly 500. The transducer 200 is used to convert electrical energy into high-frequency vibration, the horn 300 is used to conduct vibration and increase the vibration amplitude generated by the transducer 200, the tool 400 is used to receive vibration and machine a workpiece, and the rear end of the ultrasonic tool shank 100 is connected to the spindle.

[0067] Specifically, the tool body assembly 500 includes a tool body 1. The tool body 1 has a second end and a first end arranged oppositely in the front-rear direction. The first end of the tool body 1 is adapted to be connected and cooperated with the spindle of the machine tool. Among them, a receiving groove 13 and a positioning notch 14 are provided at the end of the first end of the tool body 1. The positioning notch 14 is located on the outer peripheral side of the receiving groove 13 and is communicated with the receiving groove 13. The spindle is adapted to be inserted into the receiving groove 13, and a positioning pin on the spindle is adapted to be inserted into the positioning notch 14. When the spindle drives the positioning pin to rotate, the positioning pin cooperates with the positioning notch 14, and the tool body 1 can be rotated around the central axis of the tool body 1.

[0068] Moreover, the second end of the tool body 1 is provided with an installation cavity 11 for installing the transducer 200. That is to say, the tool body 1 can serve as the housing for installing the transducer 200. In other words, the tool body 1 for connecting to the spindle and the housing for installing the transducer 200 are integrally formed. Compared with separately arranging the tool body 1 and the housing for installing the transducer 200 and connecting them together through fasteners, the tool body 1 in this application has higher rigidity, which can improve the machining accuracy of the ultrasonic tool shank 100 and also enhance the machining efficiency of the ultrasonic tool shank 100.

[0069] It should be noted that the front-back direction of the ultrasonic tool shank 100 can refer to Figure 2 the front-back direction therein, and the front-back direction of the ultrasonic tool shank 100 is consistent with the axial direction of the tool body 1. Moreover, the first end of the tool body 1 can refer to Figure 2 the rear end of the tool body 1 therein. Correspondingly, the second end of the tool body 1 can refer to Figure 2 the front end of the tool body 1 therein.

[0070] Furthermore, the tool body assembly 500 further includes a wireless receiving unit 2. As shown in Figure 3 and Figure 4 , the wireless receiving unit 2 is arranged on the tool body 1. In some preferred embodiments, the wireless receiving unit 2 is sleeved on the outer peripheral wall of the tool body 1, and the wireless receiving unit 2 can be detachably connected to the tool body 1. For example, the wireless receiving unit 2 can be connected and cooperated with the tool body 1 through fasteners such as bolts and locking pins. Of course, in some embodiments, the wireless receiving unit 2 can be fixedly connected to the tool body 1. For example, the wireless receiving unit 2 can be fixedly connected to the tool body 1 by means of welding, riveting, etc. The wireless receiving unit 2 is adapted to be electrically connected to the transducer 200. The external power supply first supplies power to the wireless receiving unit 2, and then the wireless receiving unit 2 supplies power to the transducer 200. The transducer 200 receives the electric energy and converts it into high-frequency vibration.

[0071] Wherein, the wireless receiving unit 2 can include a receiving magnet and a receiving coil. The receiving coil is arranged inside the receiving magnet, and the receiving coil is electrically connected to the transducer 200. In some specific embodiments, a wire passing channel is arranged inside the tool body 1 for avoiding the electrical connection wire so that the electrical connection wire is connected between the transducer 200 and the receiving coil.

[0072] Correspondingly, a wireless transmitting unit may be provided on the main shaft of the machine tool. The wireless transmitting unit includes a transmitting magnet and a transmitting coil. The transmitting coil is disposed within the transmitting magnet and is electrically connected to an external power source. When the main shaft of the machine tool is connected and mated with the tool body 1 of the ultrasonic tool handle 100, the wireless transmitting unit faces the wireless receiving unit 2. By supplying power to the transmitting coil through the external power source, a magnetic field is generated in the transmitting magnet. The wireless receiving unit 2 is located within the magnetic field generated by the wireless transmitting unit. Based on the principle of magnetoelectric induction, the receiving coil can generate an electric current and supply power to the transducer 200, so that the transducer 200 can convert electrical energy into high-frequency vibration.

[0073] By enabling the machine tool to supply power to the ultrasonic tool handle 100 in a non-contact power supply manner, the heat generated by the ultrasonic tool handle 100 during operation can be reduced. When the machine tool drives the ultrasonic tool handle 100 to rotate at a high speed, for example, when the rotational speed of the tool body 1 reaches 20,000 to 40,000 revolutions per minute, the non-contact power supply method can significantly reduce the heat generated by the ultrasonic tool handle 100 during operation, which helps to extend the service life of the ultrasonic tool handle 100.

[0074] Furthermore, the tool body assembly 500 further includes a connecting sleeve 3 connected to the second end of the tool body 1. The connecting sleeve 3 is coaxially arranged with the tool body 1. The horn 300 is installed at the connection between the tool body 1 and the connecting sleeve 3, and the horn 300 extends out of the front end of the connecting sleeve 3. Specifically, the connecting sleeve 3 is provided with an avoidance hole 31 that penetrates the connecting sleeve 3 along the axial direction of the connecting sleeve 3 (i.e., Figure 2 the front-back direction in

[0075] ). The connecting sleeve 3 is coaxially and fixedly connected to the tool body 1. The connecting sleeve 3 faces the second end of the tool body 1, and an installation portion 32 is jointly formed between the connecting sleeve 3 and the second end of the tool body 1. The installation portion 32 is used to install the horn 300, and the avoidance hole 31 is adapted to allow the horn 300 to pass through. Among them, the installation portion 32 can be configured as an annular installation groove. The outer peripheral wall of the horn 300 is provided with an annular connecting convex ring. The connecting convex ring is disposed at one end of the horn 300 close to the transducer 200. The connecting convex ring extends into the installation groove, and the groove wall of the installation groove abuts against the connecting convex ring, so that the connecting convex ring can be limited within the installation groove. Furthermore, the connecting convex ring can limit the movement of the horn 300 relative to the tool body 1, achieving the technical effect that the horn 300 rotates when the tool body 1 rotates. Figure 6 Furthermore, as shown in the outer peripheral wall of the connecting convex ring is provided with at least one locking pin. In some preferred embodiments, the outer peripheral wall of the connecting convex ring can be provided with a plurality of locking pins. The plurality of locking pins are sequentially and evenly spaced along the circumferential direction of the connecting convex ring. The bottom of the installation groove is correspondingly provided with locking holes. The locking pins are inserted into the locking holes to further improve the connection reliability between the horn 300 and the tool body 1. Or the locking pins are directly inserted into the installation groove to fix the horn 300.

[0076] Furthermore, as Figure 2 shown, the horn 300 is opposite to and fixedly connected with the transducer 200. When the tool body 1 is driven by the spindle of the machine tool and rotates around the central axis of the tool body 1, the tool body 1 can drive the horn 300 and the transducer 200 to rotate around the central axis of the tool body 1. The tool 400 of the ultrasonic machining device 1000 is installed at one end of the horn 300 away from the transducer 200. By making the avoidance hole 31 avoid the horn 300, the end of the horn 300 provided with the tool 400 can penetrate out of the tool body assembly 500. The connecting sleeve 3 can guide and support the horn 300.

[0077] The fixing assembly 600 is sleeved on the front end of the tool body assembly 500 through the bearing 5. In some specific embodiments, the fixing assembly 600 includes a housing 4, and the housing 4 is sleeved on the outer peripheral side of the connecting sleeve 3 through the bearing 5. That is to say, the bearing 5 is not arranged on the outer peripheral side of the tool body 1, that is, the bearing 5 does not occupy the outer peripheral side space of the tool body 1, which can not affect the axial dimension of the tool body 1, so that the rigidity of the tool body 1 can be improved. And because the circular runout at one end close to the tool 400 is small, the machining accuracy of the machine tool can be improved. Moreover, since the axial dimension of the horn 300 is long, the corresponding connecting sleeve 3 can have a long axial dimension, and there is enough installation space on the outer peripheral side of the connecting sleeve 3 for installing the bearing 5, so that the overall axial dimension of the ultrasonic tool shank 100 will not be extended.

[0078] In addition, by making the bearing 5 not occupy the outer peripheral side space of the tool body 1, that is, not affecting the radial dimension of the tool body 1, the space in the tool body 1 for installing the transducer 200 is larger. At this time, the structural dimension of the transducer 200 that can be installed in the tool body 1 is larger. It can be understood that the transducer 200 generally includes a piezoelectric vibrator, and the piezoelectric vibrator is used to convert electromagnetic energy into mechanical energy. The specific working principle of the transducer 200 is embodied in the prior art and will not be elaborated here. However, it should be noted that the performance of the transducer 200 is closely related to the dimensions of each component of the transducer 200. For example, when the dimension of the piezoelectric vibrator is larger, the performance of the transducer 200 is better. By increasing the structural dimension of the transducer 200 installed in the tool body 1, the performance of the transducer 200 can be significantly improved, such as improving the output power of the transducer 200.

[0079] Furthermore, since the radial dimension of the horn 300 is small, the radial dimension of the corresponding connecting sleeve 3 is small. When the bearing 5 is arranged on the outer peripheral side of the connecting sleeve 3, by designing the inner diameter dimension of the bearing 5 to be less than or equal to the outer diameter dimension of the second end of the tool body 1, compared with arranging the bearing 5 on the outer peripheral side of the tool body 1, the radial dimension of the bearing 5 in the present application is smaller. In the case where the spindle drives the tool body 1 to rotate at a high speed, the linear velocity of the inner ring of the bearing 5 can be effectively reduced, thereby reducing the heat generation of the bearing 5, enabling the bearing 5 to operate for a long time at a high speed, improving the service life of the bearing 5, solving the problem that the existing ultrasonic tool holder 100 needs to be frequently repaired and the bearing 5 needs to be replaced, and further improving the machining performance of the ultrasonic machining equipment 1000.

[0080] In addition, by arranging the bearing 5 on the outer peripheral side of the connecting sleeve 3, when the bearing 5 needs to be replaced, the bearing 5 is disassembled and assembled from the connecting sleeve 3. Compared with arranging the bearing 5 on the outer peripheral side of the tool body 1, when disassembling and assembling the bearing 5 on the ultrasonic tool holder 100 in the present application, the position of the bearing 5 does not pass through the tool body 1, which can reduce the influence on the connection between the tool body 1 and the spindle, that is, it does not affect the first end of the tool body 1, thereby reducing the influence of the disassembly and assembly of the bearing 5 on the machining accuracy of the ultrasonic machining equipment 1000.

[0081] As Figures 1 - 4 、 Figure 8 shown, in some embodiments of the present application, the ultrasonic tool holder 100 may further include a tool changing ring 6. The tool changing ring 6 is sleeved on the outer peripheral side of the tool body 1, and the tool changing ring 6 is located between the wireless receiving unit 2 and the outer housing 4. And, in some embodiments, the tool changing ring 6 is fixedly connected to the tool body 1. In other embodiments, the tool changing ring 6 may be movably arranged on the outer peripheral side of the tool body 1 through a bearing member. For example, the tool changing ring 6 may be rotatably sleeved on the outer peripheral side of the tool body 1 through a load bearing. A tool changing groove 61 is provided on the side wall of the tool changing ring 6 away from the tool body 1, and the tool changing groove 61 extends along the circumferential direction of the tool body 1. Wherein, when the machine tool needs to process the part blank multiple times according to the machining process and the specifications of the tools 400 required for at least two processing steps are different, or when the ultrasonic tool holder 100 needs to be cooled after long-term operation, by providing the tool changing ring 6 on the ultrasonic tool holder 100, the machine tool can realize automatic tool changing.

[0082] When the machine tool needs to change the tool, after the main shaft moves the ultrasonic tool holder 100 to the tool magazine, the tool changing arm clamps the tool holder through the tool changing groove 61, and the main shaft releases the tool, so as to unlock the main shaft and the ultrasonic tool holder 100 to be replaced. Then the tool changing arm rotates, sends the tool holder back to the tool magazine, and moves the ultrasonic tool holder 100 to be used to the main shaft side. After the main shaft grabs the tool, the main shaft and the ultrasonic tool holder 100 to be used are locked with each other, thus completing the automatic tool changing work process of the machine tool. If the tool changing ring 6 is not provided, the ultrasonic tool holder 100 can only be fixed in the tool magazine by means of the outer housing 4. When the main shaft moves to be directly opposite to the ultrasonic tool holder 100 and then moves towards the ultrasonic tool holder 100, a force will be applied to the outer housing 4, resulting in the bearing 5 being stressed and further causing damage to the bearing 5.

[0083] Furthermore, as Figure 8 shown, a positioning groove can also be provided on the tool changing ring 6. The positioning groove is communicated with the tool changing groove 61, and the groove width dimension of the positioning groove is different from that of the tool changing groove 61. A positioning structure corresponding to the positioning groove can also be provided on the tool changing arm, so that the positioning structure extends into the positioning groove to realize the positioning of the tool changing arm and the ultrasonic tool holder 100.

[0084] Furthermore, as Figure 2 、 Figure 6 shown, the tool body 1 is provided with a first stop portion 15, and the tool changing ring 6 is provided with a second stop portion 62. The first stop portion 15 abuts against and is fixedly connected to the second stop portion 62, so that the tool changing ring 6 is fixedly installed on the outer peripheral side of the tool body 1. By providing the tool changing ring 6, the automatic tool changing of the ultrasonic tool holder 100 with the ring spraying function is realized, and the force during tool changing is on the tool body 1, avoiding directly acting on the outer housing 4 of the ring spraying, thereby damaging the bearing 5. Among them, the ring spraying function of the ultrasonic tool holder 100 will be described in detail in the following description.

[0085] As Figure 5 shown, in some embodiments of the present application, the installation cavity 11 communicates with the external environment to form a transducer cooling branch, and the transducer cooling branch can discharge the gas medium to the external environment. A bearing cooling flow channel 51 surrounding the outer peripheral side of the bearing 5 is provided in the fixing assembly 600, and the bearing cooling flow channel 51 communicates with the external environment to form a bearing cooling branch, and the bearing cooling branch can discharge the gas medium to the external environment. A first air inlet flow channel 72 is further defined in the fixing assembly 600. The first air inlet flow channel 72 communicates with the transducer cooling branch and also communicates with the bearing cooling branch, and the first air inlet flow channel 72 is adapted to communicate with an external air source. The external air source is used to provide cooling gas into the first air inlet flow channel 72. The cooling gas can be air or can be designed as a specific refrigerant gas according to actual production needs.

[0086] After the external air source supplies the cooling gas to the first air inlet flow channel 72, a part of the cooling gas is diverted to the transducer cooling branch. When the cooling gas flows through the installation cavity 11, it can exchange heat with the transducer 200 in the installation cavity 11, so that the temperature of the transducer 200 decreases and the temperature of the cooling gas increases. The cooled gas after heat exchange is discharged to the external environment, thereby achieving the technical effect that the cooling gas conducts the heat generated when the transducer 200 works to the outside of the ultrasonic tool handle 100. In this way, it can be ensured that the transducer 200 will not be damaged due to overheating after long-term operation.

[0087] Moreover, another part of the cooling gas is diverted to the bearing cooling branch. When the cooling gas flows along the bearing cooling flow channel 51, it exchanges heat with the bearing 5, so that the temperature of the bearing 5 decreases and the temperature of the cooling gas increases. The cooled gas after heat exchange is discharged to the external environment. When the main shaft drives the connecting sleeve 3 to rotate relative to the outer housing 4 and the inner ring of the bearing 5 rotates relative to the outer ring, the heat generated by the internal friction of the bearing 5 can be conducted to the outside of the ultrasonic tool handle 100 through the cooling gas, so that it can be ensured that the bearing 5 will not be damaged due to overheating after long-term operation.

[0088] Furthermore, the ultrasonic tool handle 100 has a first exhaust port communicating with the external environment, and the installation cavity 11 can discharge gas to the external environment through the first exhaust port. In some specific embodiments, the gap between the horn 300 and the connecting sleeve 3 is configured as the first exhaust port, or a first exhaust hole is provided on the connecting convex ring of the horn 300. However, the present application is not limited thereto. For example, in some other embodiments, the ultrasonic tool handle 100 can be provided with an additional hole structure to be used as the first exhaust port.

[0089] A second exhaust port 42 communicating with the external environment is provided on the outer housing 4, and the bearing cooling flow channel 51 can communicate with the external environment through the second exhaust port 42. In some specific embodiments, as Figure 5 、 Figure 10 shown, the second exhaust port 42 is provided near the front end of the outer housing 4. Of course, the second exhaust port 42 can also be formed by the outer housing 4 and other units of the ultrasonic tool handle 100 together.

[0090] Furthermore, as Figure 1 、 Figure 3 、 Figure 5 shown, the fixing assembly 600 further includes an outer box assembly 7. The outer box assembly 7 is fixed to the rear end of the outer housing 4. That is to say, there is no relative movement between the outer box assembly 7 and the outer housing 4. The outer box assembly 7 is provided with the above-mentioned first air inlet flow channel 72. The outer box assembly 7 is further provided with a first air inlet 71. The first air inlet 71 is communicated with the first air inlet flow channel 72. The first air inlet 71 is adapted to be connected to an external air source, and the external air source can supply cooling gas to the first air inlet flow channel 72 through the first air inlet 71.

[0091] In some embodiments of the present application, the fixing component 600 further includes a bearing cooling member 52. As Figure 5 , Figure 13 , Figure 14 shown, an installation gap is formed by spacing the outer peripheral wall of the bearing 5 from the inner peripheral wall of the outer housing 4. The bearing cooling member 52 is installed in the installation gap, that is, the bearing cooling member 52 is disposed in the installation gap between the outer housing 4 and the bearing 5. A diversion groove 511 is formed on the outer peripheral side of the bearing cooling member 52. The diversion groove 511 is axially arranged in the front-rear direction and spirally arranged on the outer surface side of the bearing cooling member 52. The diversion groove 511 and the outer housing 4 enclose a bearing cooling flow path 51.

[0092] Specifically, the bearing cooling member 52 includes a cooling member body 521 and a diversion rib 522. The cooling member body 521 is sleeved on the outer peripheral side of the bearing 5. The cooling member body 521 can be fixedly connected to the outer ring of the bearing 5, and the bearing cooling member 52 is fixedly connected to the outer housing 4. In this way, the technical effect of indirectly fixedly connecting the outer housing 4 and the outer ring of the bearing 5 is achieved. When the main shaft drives the tool body 1 to drive the connecting sleeve 3 to rotate, the outer box assembly 7, the outer housing 4, the bearing cooling member 52 and the outer ring of the bearing 5 are stationary relative to the main shaft, and the tool body 1, the connecting sleeve 3, the transducer 200, the horn 300, the tool 400 and the inner ring of the bearing 5 rotate with the main shaft.

[0093] The diversion rib 522 is disposed on the outer peripheral wall of the cooling member body 521, and the diversion rib 522 extends along the radial direction of the bearing cooling member 52 toward the inner peripheral wall of the outer housing 4. As Figure 13 shown, there are a plurality of diversion ribs 522, and each diversion rib 522 is axially arranged in the front-rear direction and spirally arranged on the outer surface side of the cooling member body 521. The plurality of diversion ribs 522 are sequentially arranged at intervals along the circumferential direction of the cooling member body 521, and a diversion groove 511 is formed between any two adjacent diversion ribs 522, so that the diversion groove 511 and the outer housing 44 jointly define the bearing cooling flow path 51.

[0094] That is to say, the bearing cooling member 52 can have a plurality of diversion grooves 511. The plurality of diversion grooves ५11 cooperate with the outer housing 4 to define a plurality of bearing cooling flow paths 51. Each bearing cooling flow path 51 is communicated with the second exhaust port 42. The cooling gas shunted into the bearing cooling branch is shunted into the plurality of bearing cooling flow paths 51 to cool the bearing 5. In this way, the circumferential temperature of the bearing 5 can be made uniform, thereby preventing the local temperature of the bearing 5 from being too high. By designing the flow path of the cooling gas in the bearing cooling flow path 51 as a spiral shape, the flow of the cooling gas in the bearing cooling flow path 51 can be extended, and the cooling effect can be improved.

[0095] Of course, the present application is not limited to this. The bearing cooling flow path 51 can also be configured into other shapes that are beneficial to the heat dissipation of the bearing 5.

[0096] As Figure 14 shown, in some specific embodiments of the present application, the connecting sleeve 3 is provided with a first stop surface 33, and the rear end surface of the bearing 5 abuts against the first stop surface 33. The ultrasonic tool handle 100 further includes a bearing end cover 53 which has a second stop surface 531, and the front end surface of the bearing 5 abuts against the second stop surface 531. By cooperating the bearing end cover 53 with the connecting sleeve 3, the bearing 5 can be limited between the first stop surface 33 and the second stop surface 531, so as to limit the movement of the bearing 5 relative to the connecting sleeve 3 along the axial direction of the connecting sleeve 3. The bearing pressing part 54 and the bearing cooling part 52 are locked on the outer ring of the bearing 5, and a seal is provided between the bearing end cover 53 and the bearing pressing part 54 to prevent gas impurities and the like from entering the bearing 5.

[0097] As Figure 5 、 Figure 9 shown, in some embodiments of the present application, the ultrasonic tool handle 100 further includes a flow guiding member 8 fixedly sleeved on the tool body assembly 500. In some specific embodiments, the flow guiding member 8 is located between the outer box body assembly 7 and the wireless receiving unit 2. The flow guiding member 8 includes a flange portion 81 and an air flow turbine 82 which are fixedly connected. The flange portion 81 is sleeved on the outer peripheral side of the tool body assembly 500 and is connected and cooperated with the tool body assembly 500. Specifically, as Figure 5 shown, the flange portion 81 is fixedly connected to the tool changing ring 6. For example, the flange portion 81 and the tool changing ring 6 can be fixedly connected by means of screwing, riveting, etc., and the tool changing ring 6 is fixedly connected to the tool body 1, so that the flange portion 81 and the tool body 1 can be indirectly fixedly connected together. At this time, the flange portion 81 is sleeved on the outer peripheral side of the tool body 1.

[0098] Moreover, a gap is provided between the flange portion 81 and the fixing assembly 600. In the Figure 5 shown embodiment, a gap is provided between the flange portion 81 and the outer box body assembly 7. Such a setting can prevent the flange portion 81 from contacting the outer box body assembly 7 when the flow guiding member 8 rotates.

[0099] The flange portion 81 is spaced apart from the tool body 1 to form a communication flow channel 83. A communication hole 12 communicating the communication flow channel 83 and the installation cavity 11 is provided on the tool body 1. The communication flow channel 83 communicates the first intake air flow channel 72 and the installation cavity 11. The cooling gas flowing into the installation cavity 11 in a divided flow can flow through the communication flow channel 83 and the communication hole 12 in sequence and then flow into the installation cavity 11 to cool the transducer 200. Moreover, from the perspective of the flow direction of the cooling gas in the ultrasonic tool shank 100, since the diversion flow channel 73 between the transducer cooling branch and the bearing cooling branch is provided between the transducer 200 and the bearing 5 (the diversion flow channel 73 will be described in detail in the following content), in order to ensure that the cooling gas in the transducer cooling branch flows forward from the rear end of the transducer 200, the communication hole 12 is provided away from the connection point of the first intake air channel and the communication flow channel 83. In addition, a gap is formed between the tool changing ring 6 and the tool body 1. The gap between the tool changing ring 6 and the tool body 1 can be configured as an extension section of the communication flow channel 83, so that the communication length of the communication flow channel 83 is longer, the arrangement position of the communication hole 12 on the tool body 1 is more flexible, and the cooling requirement of the transducer cooling branch is improved.

[0100] Further, the air flow turbine 82 includes at least one blade 821. The blade 821 is provided on the inner peripheral wall of the flange portion 81 and is located in the communication flow channel 83. The blade 821 extends along the radial direction of the tool body 1 toward the tool body 1. When the main shaft drives the tool body 1 to rotate, the tool body 1 drives the guide member 8 to rotate around the central axis of the tool body 1. When the guide member 8 rotates, the blade 821 sucks the cooling gas from the first intake air flow channel 72 into the communication flow channel 83, so that the cooling air can flow more easily into the installation cavity 11 to cool the transducer 200.

[0101] Further, along the front-back direction of the ultrasonic tool shank 100, the outlet end of the first intake air flow channel 72 is located between the communication flow channel 83 and the bearing cooling flow channel 51, and the communication flow channel 83 is located on the side of the bearing cooling flow channel 51 close to the main shaft, that is, the communication flow channel 83 is arranged close to the transducer cooling branch. By arranging the outlet end of the first intake air flow channel 72 between the communication flow channel 83 and the bearing cooling flow channel 51, the interval distances between the first intake air flow channel 72 and the communication flow channel 83 and between the first intake air flow channel 72 and the bearing cooling flow channel 51 can be approximated, and the pressure losses of the cooling gas flowing to the communication flow channel 83 and the bearing cooling flow channel 51 are approximately the same. In this way, it can be ensured that both the transducer cooling branch and the bearing cooling branch can obtain sufficient cooling gas by diversion, and further, both the transducer 200 and the bearing 5 can be fully cooled.

[0102] As Figure 5As shown, in some embodiments of the present application, the outer box assembly 7 includes a side housing 77 and a cover plate 78. The side housing 77 is fixedly connected to the outer housing 4, and a first air inlet passage 72 is defined within the side housing 77. The cover plate 78 is disposed on the rear side of the side housing 77, and the cover plate 78 is provided with a first air inlet 71. The side housing 77 and the connecting sleeve 3 or the tool body 1 are spaced apart along the radial direction of the connecting sleeve 3 to form a split flow passage 73. The split flow passage 73 has an air inlet end and an air outlet end. Among them, the split flow passage 73 may be provided with two air outlet ends, which are a first air outlet end and a second air outlet end respectively. The air inlet end is communicated with the first air inlet passage 72, the first air outlet end is communicated with the transducer cooling branch, and the second air outlet end is communicated with the bearing cooling branch, so that the first air inlet passage 72 is communicated with both the installation cavity 11 and the bearing cooling passage 51. Such a setting can ensure that the cooling gas in the first air inlet passage 72 is split into the installation cavity 11 and the bearing cooling passage 51 to cool the transducer 200 and the bearing 5.

[0103] As Figure 7 , Figure 11 , Figure 12 shown, in some embodiments of the present application, the outer box assembly 7 may further be provided with a second air inlet 74, and the outer box assembly 7 may further define a second air inlet passage 75. In Figure 1 , Figure 3 the embodiment shown, the cover plate 78 is provided with a second air inlet 74, and a second air inlet passage 75 communicated with the second air inlet 74 is defined within the side housing 77. It should be noted that the second air inlet passage 75 and the first air inlet passage 72 are separated from each other, so that the exchange of gas between the second air inlet passage 75 and the first air inlet passage 72 can be restricted, thereby providing suitable cooling gas for different cooling requirements in the ultrasonic handle.

[0104] One end of the outer housing 4 away from the spindle of the machine tool (i.e., Figure 7 the front end of the outer housing 4 in Figure 10 shown) may be provided with a connecting bracket 9. A ring spray groove 411 is formed at the front end of the outer housing 4 (as

[0105] In some specific embodiments, the connecting bracket 9 has at least one connecting hole 91 which communicates with the annular jet flow channel 41. The connecting hole 91 is used for installing a cooling nozzle. The cooling nozzle has a nozzle opening which is arranged facing the tool 400. After the cooling nozzle is installed in the connecting hole 91, the cooling nozzle communicates with the annular jet flow channel 41. The cooling gas in the annular jet flow channel 41 can further flow to the cooling nozzle, and then the cooling gas is ejected from the cooling nozzle towards the tool 400 to cool the tool 400 and the workpiece, thereby preventing the tool 400 from being damaged due to overheating after long-term operation and realizing the annular jet function of the ultrasonic handle.

[0106] In some preferred embodiments, as Figure 11 , Figure 12 shown, the connecting bracket 9 can be provided with a plurality of connecting holes 91 which are arranged at intervals in sequence along the circumferential direction of the outer housing 4. A cooling nozzle is correspondingly installed in each connecting hole 91. By ejecting cooling gas towards the tool 400 through a plurality of cooling nozzles, the temperature of the tool 400 can be made more uniform, and the cooling effect of the ultrasonic tool shank 100 on the tool 400 is better.

[0107] In some specific embodiments of the present application, as Figure 7 shown, a connecting pipe 76 can be installed in the outer housing 4. One end of the connecting pipe 76 is communicated with the second air inlet flow channel 75, and the other end of the connecting pipe 76 is communicated with the annular jet flow channel 41. The connecting pipe 76 is formed with the above-mentioned flow-through channel 412 to achieve the technical effect of communicating the second air inlet flow channel 75 with the annular jet flow channel 41.

[0108] Furthermore, when the connecting bracket 9 is arranged at the end of the outer housing 4, by arranging the tool changing ring 6 on the outer peripheral side of the tool body 1, when the spindle loads the ultrasonic tool shank 100, the force application point of the loading force received by the ultrasonic tool shank 100 is located on the tool body 1, which can reduce the extrusion on the connecting bracket 9, thereby reducing the loading force received by the bearing 5, and further preventing the bearing 5 from being damaged due to force application, and improving the service life of the bearing 5.

[0109] When the ultrasonic tool shank 100 is in operation, the spindle of the machine tool is connected to the rear side of the tool body 1 to drive the tool body 1 to rotate. And during the rotation of the tool body 1, the fixing assembly 600 remains stationary relative to the tool body 1. Since the tool body 1 can rotate relative to the fixing assembly 600, after the tool body 1 is disengaged from the spindle, relative rotation will occur between the tool body 1 and the fixing assembly 600, causing the tool body 1 to deviate from the position where it is docked with the spindle. When the ultrasonic tool shank 100 is connected again, the spindle cannot be aligned with the tool body 1, resulting in the inability of the machining tool to change tools. In response to this situation, a braking mechanism 10 can be provided on the ultrasonic tool shank 100 to limit the relative rotation between the tool body 1 and the fixing assembly 600 when the tool body 1 is disengaged from the spindle. Of course, the braking mechanism 10 of the present application can also limit the relative rotation between the tool body 1 and the fixing assembly 600 during the transportation of the ultrasonic tool shank 100.

[0110] As Figure 6 , Figures 15 - 17 shown, at least a part of the outer peripheral wall of the tool body assembly 500 of the ultrasonic tool shank 100 is provided with a first friction area 16. The braking mechanism 10 is installed in the fixing assembly 600. The braking mechanism 10 includes a friction member 101. The braking mechanism 10 is adapted to switch between a first trigger state and a second trigger state. The friction member 101 has a second friction area 1013 opposite to the first friction area 16. In some preferred embodiments, the second friction area 1013 can be formed by a rough surface.

[0111] In the first trigger state, the friction member 101 is driven to abut against the tool body assembly 500, so that the second friction area 1013 contacts the first friction area 16. The frictional force between the second friction area 1013 and the first friction area 16 can limit the movement of the tool body assembly 500 relative to the fixing assembly 600, that is, make the tool body assembly 500 and the fixing assembly 600 relatively stationary, thereby achieving the technical effect of braking the tool body assembly 500. When the ultrasonic tool shank 100 to be used is in the first trigger state, it is easy for the spindle to be aligned with the receiving groove 13 and the positioning notch 14 of the ultrasonic tool shank 100 and then connected to each other.

[0112] Among them, at least a part of the outer peripheral wall of the tool body assembly 500 is provided with a first friction area 16. Of course, the first friction area 16 can also be provided on the entire annular outer peripheral wall. When the first friction area 16 is the entire annular outer peripheral wall, relative stillness between the tool body assembly 500 and the fixing assembly 600 can be achieved at any position of the tool body assembly 500, which is convenient for tool changing and debugging of the tool magazine. In some embodiments, the first friction area 16 is constituted by the annular outer peripheral wall of the tool body assembly 500, and the annular outer peripheral wall of the tool body assembly 500 is a rough surface. In other embodiments, the first friction area 16 includes an annular friction assembly fixed to the outer peripheral side of the tool body assembly 500. The annular friction assembly can be surrounded by a single friction plate or composed of at least two friction plates spliced together. The surface of the friction plate configured as the first friction area 16 can be a rough surface.

[0113] Moreover, at least a part of the outer peripheral wall of the tool body 1 is provided with the first friction area 16 and / or at least a part of the outer peripheral wall of the connecting sleeve 3 is provided with the first friction area 16. That is to say, the first friction area 16 is located on the outer peripheral side of the tool body 1, or the first friction area 16 is located on the outer peripheral side of the connecting sleeve 3, or the first friction area 16 is partially located on the outer peripheral side of the tool body 1 and partially located on the outer peripheral side of the connecting sleeve 3. The actual setting of the first friction area 16 can be determined according to the specific structure of the tool body assembly 500.

[0114] It should be noted that the roughness and area size of the first friction area 16 and the roughness and area size of the second friction area 1013 can be set according to the actual size, weight, actual use scenario, etc. of the ultrasonic tool shank 100. Further, when the first friction area 16 is an annular area, when the tool body assembly 500 rotates relative to the fixing assembly 600 to any angle, the second friction area 1013 can be kept facing the first friction area 16 all the time, so that the braking mechanism 10 can brake the tool body assembly 500 when the tool body assembly 500 is in any position, thereby improving the use convenience of the braking mechanism 10 and reducing the braking difficulty of the ultrasonic tool shank 100.

[0115] In the second trigger state, the friction member 101 is driven to be separated from the tool body assembly 500, so that the second friction area 1013 and the first friction area 16 are spaced apart to form a gap, to unlock the tool body assembly 500, so that the tool body assembly 500 and the fixing assembly 600 can rotate relative to each other. Among them, when the spindle and the ultrasonic tool shank 100 are installed in place, the braking mechanism 10 is in the second trigger state. By unlocking the tool body assembly 500, the tool body assembly 500 is no longer subject to the frictional force of the friction member 101, and the tool body assembly 500 can be driven by the spindle to process an object.

[0116] Thus, during the process of replacing the ultrasonic tool shank 100 of the machine tool or when the ultrasonic tool shank 100 is idle, by making the friction member 101 abut against the tool body assembly 500, the tool body assembly 500 is braked by the frictional force between the first friction area 16 and the second friction area 1013, so that the tool body assembly 500 and the fixing assembly 600 are relatively stationary, preventing relative rotation between the two. Compared with the way of braking the tool body assembly 500 by the cooperation of the locking pin and the locking groove, the braking mechanism 10 of the present application adopts a non-rigid contact with the tool body assembly 500. The side wall of the friction member 101 can buffer and absorb energy, with better impact adaptability, and can also reduce the magnitude of the impact force transmitted to the tool body assembly 500 and the fixing assembly 600. Moreover, the assembly accuracy of the braking mechanism 10 in the embodiment of the present application is relatively low compared with rigid connection, so it is relatively easy to manufacture, and the first friction area 16 and the second friction area 1013 wear evenly, which can reduce the wear speed of the braking mechanism 10 and avoid setting easily worn card slots, thereby improving the product quality of the ultrasonic tool shank 100 and extending the service life of the ultrasonic tool shank 100.

[0117] As Figure 2 , Figure 6 , Figure 15 shown, in some embodiments of the present application, the braking mechanism 10 further includes a transmission rod 102. The transmission rod 102 can reciprocate in the fixing assembly 600 to approach or move away from the tool body assembly 500. In the embodiment shown in Figure 6 , the transmission rod 102 extends into the outer housing 4 and is adapted to move relative to the tool body assembly 500 along the radial direction of the tool body assembly 500. The friction member 101 is provided at one end of the transmission rod 102 close to the tool body assembly 500. It should be noted that the friction member 101 can be independently arranged with the transmission rod 102, which is convenient for the disassembly and assembly of the braking mechanism 10 in the ultrasonic tool shank 100. However, the present application is not limited thereto. For example, in some embodiments, the friction member 101 can be separately arranged from the transmission rod 102, which is convenient for replacing the friction member 101.

[0118] When the braking mechanism 10 switches between the first trigger state and the second trigger state, the transmission rod 102 drives the friction member 101 to approach or move away from the tool body assembly 500, so that the friction member 101 abuts against or separates from the tool body assembly 500. By using the transmission rod 102 to drive the friction member 101 to move relative to the tool body assembly 500, the interval distance between the component driving the friction member 101 to move (such as the trigger member 103, which will be described in detail later) and the friction member 101 is extended. Compared with arranging the component driving the friction member 101 and the friction member 101 closely together, setting the transmission rod 102 between the two can reduce the layout difficulty of the braking mechanism 10 in the fixing assembly 600, so that the ultrasonic tool shank 100 is easier to maintain.

[0119] As shown in Figures 1- Figure 4 ,Figure 6 , Figure 15 As shown in Figure 15 , in some embodiments of the present application, the braking mechanism 10 further includes a trigger member 103. The trigger member 103 is installed in the outer housing assembly 7. The trigger member 103 has an initial position and a trigger position relative to the outer housing 4. The trigger member 103 is driven to move between the initial position and the trigger position. When the trigger member 103 is in the initial position, the braking mechanism 10 is in the first trigger state; when the trigger member 103 is in the trigger position, the braking mechanism 10 is in the second trigger state. In this way, when the trigger member 103 is driven, the transmission rod 102 moves away from the tool body assembly 500, and the technical effect of switching the braking mechanism 10 from the first trigger state to the second trigger state can be achieved.

[0120] Moreover, the braking mechanism 10 can control the trigger state of the braking mechanism 10 by means of mechanical triggering. In this way, the working reliability of the braking mechanism 10 can be improved, and no additional electric drive components need to be provided inside the braking mechanism 10, which can reduce the production cost of the braking mechanism 10.

[0121] Furthermore, as Figure 2 , Figure 6 shown, the trigger member 103 is arranged to extend along the axial direction of the tool body assembly 500. Specifically, the trigger member 103 extends along the axial direction of the tool body assembly 500 towards the main shaft, that is, towards the rear. Moreover, the initial position and the trigger position are arranged at intervals along the axial direction of the outer housing 4. By arranging the trigger member 103 to extend towards the main shaft, a driving structure facing the trigger member 103 can be provided on the outer peripheral side or the front end face of the main shaft housing. In some preferred embodiments, the driving structure can be a driving protrusion. The main shaft rotates through the main shaft housing, and the main shaft housing is arranged opposite to the fixing component 600. It should be noted that when the trigger member 103 extends along the axial direction of the tool body assembly 500, the extension axis of the trigger member 103 is parallel or coincides with the central axis of the tool body 1.

[0122] When the braking mechanism 10 switches from the first trigger state to the second trigger state, the trigger member 103 moves closer to the transmission rod 102, and the trigger member 103 drives the transmission rod 102 to move away from the tool body assembly 500 until the friction member 101 is driven to be separated from the tool body assembly 500. At this time, the braking mechanism 10 is in the second trigger state. In some specific embodiments, when the main shaft is connected to the tool body assembly 500, the driving protrusion on the side of the main shaft housing presses the trigger member 103, causing the trigger member 103 to move from the initial position to the trigger position, thereby unlocking the tool body assembly 500, that is, at this time, the tool body assembly 500 and the fixing component 600 can rotate relative to each other. When the main shaft is separated from the tool body assembly 500, the driving protrusion no longer presses the trigger member 103, and the trigger member 103 can reset from the trigger position to the initial position, and the friction member 101 no longer receives the force that drives it away from the tool body assembly 500.

[0123] Thus, when the relative position between the main shaft and the tool body assembly 500 is adjusted, the position of the trigger member 103 changes relatively, thereby adjusting the trigger state of the braking mechanism 10. The triggering mode of the braking mechanism 10 is more concise, so that the number of components required to trigger the braking mechanism 10 can be reduced.

[0124] In some specific embodiments of the present application, the trigger member 103 may also be a trigger switch. When the transmission rod 102 is driven, it moves closer to or away from the tool body assembly 500. When the machine tool sends a trigger signal to the trigger member 103 and the trigger member 103 receives the trigger signal, the trigger member 103 can control the braking mechanism 10 to switch to the first trigger state or the second trigger state according to the trigger signal, and the trigger member 103 can drive the transmission rod 102 to move to the corresponding position.

[0125] As Figure 2 、 Figure 6 shown, in some embodiments of the present application, the fixing component 600 defines a first installation channel 79 and a second installation channel 710. In the Figure 6 embodiment shown, the first installation channel 79 and the second installation channel 710 may be defined by the outer box body assembly 7. The first installation channel 79 extends along the radial direction of the tool body assembly 500, and the second installation channel 710 extends along the axial direction of the tool body assembly 500. The first installation channel 79 and the second installation channel 710 communicate with each other. The transmission rod 102 is movably arranged in the first installation channel 79, and the trigger member 103 is movably arranged in the second installation channel 710.

[0126] Furthermore, both the first installation channel 79 and the second installation channel 710 are located in the side housing 77. An opening communicating with the second installation channel 710 is provided on the cover plate 78. The driving structure on the main shaft housing can pass through the opening to contact the trigger member 103, or the trigger member 103 can pass through the opening to the outside of the outer box body assembly 7 to abut against the driving structure on the main shaft housing.

[0127] Moreover, the first installation channel 79 is used to guide and limit the transmission rod 102, so that the transmission rod 102 can accurately move along the radial direction of the tool body assembly 500. The second installation channel 710 is used to guide and limit the trigger member 103, so that the trigger member 103 can accurately move along the axial direction of the tool body assembly 500. By the mutual cooperation of the first installation channel 79 and the second installation channel 710, it is possible to prevent the braking mechanism 10 from shifting during movement.

[0128] As Figure 2 、 Figure 6 and Figure 15As shown, in some embodiments of the present application, a pulley 104 is provided at one end of the transmission rod 102 away from the friction member 101. The pulley 104 is in abutting cooperation with one end of the trigger member 103 close to the transmission rod 102. When the trigger member 103 moves close to the transmission rod 102, the trigger member 103 is in rolling cooperation with the pulley 104 to drive the transmission rod 102 to move away from the tool body assembly 500. Among them, the surface of the trigger member 103 opposite to the pulley 104 can be a transmission surface. The pulley 104 is rotatable relative to the transmission rod 102. When the trigger member 103 is pressed and triggered, the trigger member 103 moves along the axial direction of the tool body assembly 500. At this time, the pulley 104 rolls along the transmission surface, and the position of the pulley 104 in the fixing assembly 600 changes with the undulation of the shape of the transmission surface. Thus, the pulley 104 can drive the transmission rod 102 to move closer to or away from the tool body assembly 500.

[0129] By the cooperation of the trigger member 103 and the pulley 104, the moving direction of the trigger member 103 can be reversed relative to the moving direction of the transmission rod 102. In this way, the moving direction and the setting position of the trigger member 103 are more flexible, which helps to meet the requirements of different types of machine tools.

[0130] In addition, by providing the pulley 104 between the transmission rod 102 and the trigger member 103 to achieve the transmission of the driving force, the friction force received when the pulley 104 rolls is smaller, so that the transmission rod 102 and the trigger member 103 can move more smoothly.

[0131] Further, as Figure 2 、 Figure 6 、 Figure 15 、 Figure 17 shown, a stop inclined surface 1031 can be provided on the side wall of the trigger member 103 that abuts against the pulley 104, that is, the transmission surface is configured as an inclined surface. In the direction from the rear side to the front side of the ultrasonic tool shank 100, the stop inclined surface 1031 is inclined towards the tool body assembly 500. In some preferred embodiments, the outer peripheral wall profile of the pulley 104 can be a circular profile, and the stop inclined surface 1031 can be a plane. The displacement amount of the pulley 104 corresponds to the slope of the stop inclined surface 1031 and the displacement amount of the trigger member 103. The ultrasonic tool shank 100 can more easily control the displacement amount of the pulley 104, and can also make the movement of the pulley 104 more stable.

[0132] Of course, in some other embodiments, the shape of the outer peripheral wall profile of the pulley 104 and the shape of the stop inclined surface 1031 can also be set according to the actual use scenario to meet the different displacement requirements of the transmission rod 102 and the trigger member 103, and to meet the force requirements between the pulley 104 and the trigger member 103.

[0133] As Figure 2 、 Figure 6 、 Figure 15As shown, in some embodiments of the present application, the pulley 104 is mounted on the transmission rod 102 through the pulley bracket 105. The pulley bracket 105 is located at one end of the transmission rod 102 close to the trigger member 103. That is to say, the pulley bracket 105 can provide an installation position for the pulley 104. The pulley bracket 105 extends axially away from the transmission rod 102 along the transmission rod 102. The pulley 104 is pivotally mounted on the pulley bracket 105. Specifically, the pulley bracket 105 can be provided with a pivot shaft, and the pulley 104 is pivotally connected to the pivot shaft. The pulley 104 is adapted to rotate about the central axis of the pivot shaft.

[0134] Moreover, an avoidance gap is formed by spacing between the end of the pulley bracket 105 close to the transmission rod 102 and the pulley 104, and the trigger member 103 can extend into the avoidance gap. By pushing the pulley 104 to move with the trigger member 103 located in the avoidance gap, the pulley 104 can drive the pulley bracket 105 to drive the transmission rod 102 to move closer to or away from the tool body assembly 500. At the same time, the avoidance gap can avoid the trigger member 103, so as to avoid interference between the trigger member 103 and the transmission rod 102 when the trigger member 103 moves, and thus ensure that the trigger member 103 and the transmission rod 102 move in place.

[0135] In some embodiments of the present application, the braking mechanism 10 further includes an elastic member (not shown in the figure), and the elastic member is elastically deformably connected between the transmission rod 102 and the fixing assembly 600. When the braking mechanism 10 switches from the second trigger state to the first trigger state, the elastic member drives the transmission rod 102 to move closer to the tool body assembly 500 until the friction member 101 is driven to abut against the tool body assembly 500. At this time, the braking mechanism 10 is in the first trigger state. When the braking mechanism 10 switches to the first trigger state, the trigger member 103 is not pressed by the driving structure on the main shaft housing, and the trigger member 103 moves backward, and the anti-stop slope 1031 gradually separates from the pulley 104, and then the transmission rod 102 is only affected by the elastic member.

[0136] Specifically, during the process of the braking mechanism 10 switching from the first trigger state to the second trigger state, the transmission rod 102 moves away from the tool body assembly 500, and the transmission rod 102 drives the elastic member to move, such as squeezing the elastic member, and the elastic member undergoes elastic deformation and generates elastic force. When the braking mechanism 10 switches from the second state to the first trigger state, the transmission rod 102 is no longer subjected to the driving force in the direction away from the tool body assembly 500. At this time, the resultant force direction of the transmission rod 102 is the same as the elastic force direction generated by the elastic member. The elastic member recovers its deformation and drives the transmission rod 102 to move closer to the tool body assembly 500 until the friction member 101 located at the end of the transmission rod 102 abuts against the tool body assembly 500 in a mating manner, so as to achieve the technical effect of automatic reset of the braking mechanism 10.

[0137] In some preferred embodiments, when the friction member 101 and the blade assembly 500 are stopped, the remaining elastic force of the elastic member can create a certain pressure between the friction block and the blade assembly 500, thereby ensuring that a sufficiently large friction force is generated between the first friction area 16 and the second friction area 1013 to prevent the blade assembly 500 from rotating relative to the fixed assembly 600.

[0138] Furthermore, the elastic member can be constructed as a spring, and the spring can be sleeved on the outer peripheral side of the transmission rod 102. The spring can be a coil spring. Such a configuration can reduce the installation space occupied by the elastic member in the fixing assembly 600, thereby making the structure of the braking mechanism 10 more compact. Moreover, the direction of the elastic force generated when the coil spring is sleeved on the outer peripheral side of the transmission rod 102 is collinear with the moving direction of the transmission rod 102, which can make the transmission rod 102 evenly stressed and reduce the friction between the transmission rod 102 and the side wall of the first mounting channel 79, thereby making the transmission rod 102 move more smoothly.

[0139] Furthermore, the fixing assembly 600 is provided with an annular movable ring groove 711, which is located in the first mounting channel 79, and the coil spring is installed in the movable ring groove 711. The movable ring groove 711 is used to avoid the coil spring to ensure that the coil spring can contract and extend when it is located outside the transmission rod 102.

[0140] However, the present application is not limited thereto, and in other specific embodiments, the elastic member may also be configured as a torsion spring or a leaf spring, etc. The specific type of the elastic member in the ultrasonic knife handle 100 may be set according to the usage scenario.

[0141] like Figure 15 、 Figure 16 As shown, in some embodiments of the present application, the friction member 101 includes a friction plate 1011 and a mounting block 1012. The friction plate 1011 and the mounting block 1012 can be independently provided and detachably connected to each other via bonding, threading, or other methods. The friction plate 1011 is mounted on the sidewall of the mounting block 1012 proximal to the blade assembly 500, and the sidewall of the friction plate 1011 opposite the blade assembly 500 is configured as a second friction region 1013. The friction plate 1011 can be made of a material with a high coefficient of friction, thereby more easily generating a high friction force between the brake mechanism 10 and the blade assembly 500. If the friction plate 1011 becomes excessively worn after long-term use, maintenance personnel can remove the worn friction plate 1011 from the mounting block 1012 and install a new friction plate 1011 on the mounting block 1012 to extend the service life of the brake mechanism 10. By separating the friction plate 1011 and the mounting block 1012 to form two independently arranged components, compared with replacing the friction member 101 as a whole, such an arrangement can reduce the maintenance cost of the brake mechanism 10 .

[0142] Based on this, the present application further discloses an ultrasonic machining device 1000. According to the ultrasonic machining device 1000 of the embodiments of the present application, it includes the ultrasonic tool shank 100 of the above embodiments. In Figure 1 the illustrated embodiment, the ultrasonic machining device 1000 can use the tool 400 to machine a hole structure on the part blank.

[0143] Based on the foregoing ultrasonic machining device 1000, the present embodiment further provides a machine tool, which includes a machine tool body, a spindle disposed on the machine tool body, and the above ultrasonic machining device 1000.

[0144] In summary, the ultrasonic tool shank 100 provided by the present application has the following advantages:

[0145] 1. By disposing the bearing 5 between the connecting sleeve 3 and the outer housing 4, the bearing 5 does not occupy the outer peripheral side space of the tool body 1, and can not affect the axial dimension of the tool body 1, thereby improving the rigidity of the tool body 1 and reducing the overall axial dimension of the ultrasonic tool shank 100, and further improving the machining accuracy of the machine tool. Moreover, since it does not affect the radial dimension of the tool body 1, the structural dimension of the transducer 200 that can be installed in the tool body 1 is larger. And since the radial dimension of the horn 300 is smaller and the radial dimension of the connecting sleeve 3 for installing the horn 300 is smaller, when the bearing 5 is disposed on the outer peripheral side of the connecting sleeve 3, compared with disposing the bearing 5 on the outer peripheral side of the tool body 1, the radial dimension of the bearing 5 of the present application can be smaller, enabling the bearing 5 to operate for a long time at high speed, and further improving the machining performance of the ultrasonic tool shank 100.

[0146] 2. By providing a first air inlet flow channel 72 in the fixing assembly 600, a transducer cooling branch in the tool body assembly 500, and a bearing cooling branch on the outer peripheral side of the bearing 5, after the external gas source supplies cooling gas into the first air inlet flow channel 72, the cooling gas is split into the transducer cooling branch and the bearing cooling branch. The cooling gas can exchange heat with the transducer 200 and the bearing 5, and the cooled gas after heat exchange is discharged to the external environment, thereby conducting the heat generated during the operation of the transducer 200 and the bearing 5 to the external environment, preventing the transducer 200 and the bearing 5 from overheating due to excessive heat accumulation, and further preventing the transducer 200 and the bearing 5 from being damaged by overheating, improving the stability of the ultrasonic tool shank 100 during long-term operation.

[0147] 3. By bringing the friction member 101 into abutment with the tool body assembly 500, the tool body assembly 500 and the fixing assembly 600 are braked by the frictional force between the first friction area 16 and the second friction area 1013. Compared with the way of braking the tool body assembly 500 by the cooperation of the locking pin and the locking groove, the braking mechanism 10 of the present application adopts a non-rigid contact with the tool body assembly 500. The side wall of the friction member 101 can buffer and absorb energy, with better impact adaptability, and can also reduce the magnitude of the impact force transmitted to the tool body assembly 500 and the fixing assembly 600. Moreover, the assembly accuracy of the braking mechanism 10 in the embodiment of the present application is relatively low compared with rigid connection, and the first friction area 16 and the second friction area 1013 are evenly worn, which can reduce the wear rate of the braking mechanism 10 and avoid setting the easily worn card slots, thereby improving the product quality of the ultrasonic tool handle 100 and prolonging the service life of the ultrasonic tool handle 100.

[0148] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art in the technical field of the present application, without departing from the technical principle of the present application, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present application.

Claims

1. An ultrasonic tool handle, characterized in that, Comprising: A fixed component and a tool body component, wherein the tool body component is rotatably arranged within the fixed component; The tool body component includes a tool body and a connecting sleeve. The tool body has a second end and a first end arranged oppositely in the front-rear direction. The first end is adapted to be connected and cooperated with a main shaft, and the second end is provided with an installation cavity for accommodating a transducer. A wireless receiving unit is arranged on the outer periphery of the tool body, and the wireless receiving unit is electrically connected to the transducer. The connecting sleeve is connected to the second end and is coaxially arranged with the tool body; The fixed component includes an outer housing body, and the outer housing body is sleeved on the outer peripheral side of the connecting sleeve through a bearing. Wherein, the inner diameter dimension of the bearing is less than or equal to the outer diameter dimension of the second end.

2. The ultrasonic tool handle according to claim 1, wherein, It further includes a tool changing ring arranged between the wireless receiving unit and the outer housing body. The tool changing ring is sleeved on the outer peripheral side of the tool body. A tool changing groove is arranged on the side wall of the tool changing ring away from the tool body, and the tool changing groove extends along the circumferential direction of the tool body.

3. The ultrasonic tool handle according to claim 2, wherein The tool body is provided with a first stop portion, and the tool changing ring is provided with a second stop portion. The first stop portion and the second stop portion are abutted and fixedly connected.

4. The ultrasonic tool handle according to claim 1, characterized in that The fixed component further includes an outer box body component. The outer box body component is fixed to the rear end of the outer housing body. The outer box body component is provided with a first air inlet channel, and the first air inlet channel is adapted to be connected to an external air source; A bearing cooling channel surrounding the outer peripheral side of the bearing is arranged between the bearing and the outer housing body. The bearing cooling channel can be communicated with the external environment to form a bearing cooling branch; The first air inlet channel is communicated with the bearing cooling branch.

5. The ultrasonic tool handle according to claim 4, wherein An installation gap is formed by spacing the bearing and the outer housing body apart. A bearing cooling member is installed in the installation gap. A flow guiding groove is arranged on the outer periphery of the bearing cooling member. And, with the front-rear direction as the axis, the flow guiding groove is spirally arranged on the outer surface side of the bearing cooling member. The flow guiding groove and the outer housing body enclose the bearing cooling channel.

6. The ultrasonic tool handle according to claim 4, wherein, The installation cavity can be communicated with the outside to form a transducer cooling branch. The first air inlet channel is also communicated with the transducer cooling branch.

7. The ultrasonic tool handle according to claim 6, characterized in that, It further includes a flow guiding member located between the outer box body component and the wireless receiving unit. The flow guiding member includes a flange portion and an air flow turbine fixedly connected. A gap is arranged between the flange portion and the outer box body component. The flange portion is fixedly sleeved on the outer peripheral side of the tool body, and a communication flow channel is formed by spacing the flange portion and the tool body apart. The communication flow channel is communicated with the first air inlet channel. The air flow turbine includes at least one blade. The blade is arranged in the communication flow channel and extends along the radial direction of the tool body towards the tool body; The tool body is provided with a communication hole communicating the communication flow channel and the installation cavity to enable the first air inlet channel to be communicated with the installation cavity.

8. The ultrasonic tool handle according to claim 6, wherein, The outer casing assembly and the connecting sleeve or the tool body are spaced apart along the radial direction of the connecting sleeve to form a diversion flow channel, and there is a gap between the rear end portion of the outer casing assembly and the tool body. The diversion flow channel has an air inlet end and an air outlet end. The air inlet end is communicated with the first air inlet flow channel, and the air outlet end is respectively communicated with the bearing cooling branch and the transducer cooling branch, so that the cooling air flow can enter the transducer cooling branch and the bearing cooling branch respectively.

9. The ultrasonic tool handle according to claim 4, wherein, The outer casing assembly further defines a second air inlet flow channel. An annular spray flow channel is formed at a position of the outer casing away from the spindle end, and a flow-through channel is formed in the outer casing. The second air inlet flow channel is communicated with the annular spray flow channel through the flow-through channel. The second air inlet flow channel is adapted to be connected and cooperated with an external air source, and the annular spray flow channel can be connected with a cooling nozzle.

10. The ultrasonic tool handle according to claim 1, wherein At least a part of the outer peripheral wall of the tool body assembly is provided with a first friction area; A braking mechanism is installed in the fixing assembly. The braking mechanism includes a friction member. The braking mechanism is adapted to switch between a first trigger state and a second trigger state. The friction member has a second friction area opposite to the first friction area; In the first trigger state, the friction member is driven to abut against the tool body assembly, so that the second friction area contacts the first friction area to brake the tool body assembly; In the second trigger state, the friction member is driven to separate from the tool body assembly, so that a gap is formed by spacing the second friction area from the first friction area to unlock the tool body assembly.

11. The ultrasonic tool handle according to claim 10, characterized in that, The braking mechanism further includes a transmission rod. The transmission rod can reciprocate in the fixing assembly to move closer to or away from the tool body assembly. The friction member is arranged at one end of the transmission rod close to the tool body assembly. When the braking mechanism switches between the first trigger state and the second trigger state, the transmission rod drives the friction member to move closer to or away from the tool body assembly, so that the friction member abuts against or separates from the tool body assembly.

12. The ultrasonic tool handle according to claim 11, wherein, The braking mechanism further includes a trigger member. When the trigger member is driven, the transmission rod moves away from the tool body assembly.

13. The ultrasonic tool handle according to claim 12, wherein, The trigger member extends along the axial direction of the tool body assembly. When the braking mechanism switches from the first trigger state to the second trigger state, the trigger member moves closer to the transmission rod, and the trigger member drives the transmission rod to move away from the tool body assembly, so that the friction member is driven to separate from the tool body assembly.

14. The ultrasonic tool handle according to claim 13, characterized in that, The fixing assembly defines a first installation channel and a second installation channel. The first installation channel extends along the radial direction of the tool body assembly, and the second installation channel extends along the axial direction of the tool body assembly. The first installation channel is communicated with the second installation channel. The transmission rod is movably arranged in the first installation channel, and the trigger member is movably arranged in the second installation channel.

15. The ultrasonic tool handle according to claim 12, characterized in that, One end of the transmission rod away from the friction member is provided with a pulley, and the pulley is in abutting fit with one end of the trigger member close to the transmission rod. When the trigger member moves close to the transmission rod, the pulley can move along the trigger member to drive the transmission rod to move away from the tool body assembly.

16. The ultrasonic tool handle according to claim 15, characterized in that, The side wall of the trigger member abutting against the pulley is provided with an abutting inclined surface, and the abutting inclined surface is inclined towards the tool body assembly in the direction from the rear side to the front side of the ultrasonic tool handle.

17. The ultrasonic tool handle according to claim 15, characterized in that, The pulley is mounted on the transmission rod through a pulley bracket. The pulley bracket extends away from the transmission rod along the axial direction of the transmission rod. The pulley is pivotally mounted on the pulley bracket, and a clearance is formed between the pulley and the end of the pulley bracket close to the transmission rod. The trigger member extends into the clearance.

18. The ultrasonic tool handle according to claim 11, characterized in that, The braking mechanism further includes an elastic member, and the elastic member is elastically deformably connected between the transmission rod and the fixed assembly. When the braking mechanism switches from the second trigger state to the first trigger state, the elastic member drives the transmission rod to move close to the tool body assembly, so that the friction member is driven to abut against the tool body assembly.

19. The ultrasonic tool handle according to claim 10, characterized in that, The friction member includes a friction plate and a mounting block. The friction plate is mounted on the side wall of the mounting block close to the tool body assembly, and the side wall of the friction plate opposite to the tool body assembly is configured as the second friction area.

20. The ultrasonic tool handle according to claim 10, characterized in that, The first friction area is constituted by the annular outer peripheral wall of the tool body assembly, or the first friction area includes an annular friction assembly fixed to the outer periphery of the tool body assembly.

21. An ultrasonic machining device, characterized in that, Comprising: The ultrasonic tool handle according to any one of claims 1-20.

22. A machine tool, characterized in that, Comprising: A machine tool body; A main shaft, the main shaft is mounted on the machine tool body, and the machine tool body is used to drive the main shaft to rotate around the central axis of the main shaft; The ultrasonic machining device according to claim 21, and the ultrasonic tool handle of the ultrasonic machining device is connected to the main shaft.

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