Ultrasonic vibrator unit and ultrasonic processing equipment

Abstract

The present invention discloses an ultrasonic vibrator unit and ultrasonic processing equipment. The ultrasonic vibrator unit in the embodiment of the present invention blocks part of the propagation path of the axial vibration on the horn on the mounting part by setting a plurality of vibration-damping through grooves penetrating both sides of the mounting part on the mounting part, so as to reduce the vibration energy reaching the external structure connected to the vibration-damping through grooves on the far side of the horn, thereby effectively reducing the influence of the axial vibration of the horn on the external structure. Even if there is a large vibration at the contact position between the mounting part and the horn, it can be ensured that the connection position between the external structure and the mounting part does not vibrate axially or the amplitude of the axial vibration is very small. Therefore, the mounting part in the ultrasonic vibrator unit in the embodiment of the present invention is not set at the node position, so that the axial vibration on the horn will not affect the external structure, and the influence of the radial vibration at the node position on the horn on the ultrasonic vibrator unit can be avoided.

Description

Technical Field

[0001] The present invention relates to the application field of ultrasonic vibrator units, and in particular to an ultrasonic vibrator unit and ultrasonic processing equipment. Background Art

[0002] The ultrasonic vibrator unit is a structure that can convert high-frequency electrical signals into high-frequency mechanical vibrations. It is an important component of ultrasonic processing equipment in precision processing. During the processing, the ultrasonic vibrator unit is connected to the tool handle of the ultrasonic processing equipment, so that the ultrasonic vibrator unit can drive the tool handle to rotate at high speed. The high-frequency axial vibration generated by the ultrasonic vibrator unit cannot be transmitted to the tool handle, otherwise the axial vibration of the tool handle will be transmitted to the spindle rotor. The axial vibration of the spindle rotor will cause the spindle bearing to wear rapidly, thereby causing the spindle to be damaged.

[0003] At present, the tool holder is usually fixed at the resonant frequency, at a position (node ​​position) where the axial vibration amplitude on the horn of the ultrasonic vibrator unit is zero, so that the axial vibration will not be transmitted to the spindle rotor. However, during the processing, due to changes in load or the temperature of the tool holder, the resonant frequency of the ultrasonic vibrator unit is prone to drift, resulting in changes in the node position, so that the axial vibration will still be transmitted from the horn to the tool holder, causing the spindle to be damaged. In addition, although the axial vibration at the node position is the smallest, the radial vibration at the node position is the largest, and the fixed tool holder cannot vibrate radially, so the kinetic energy generated by the radial vibration is converted into heat energy, causing the ultrasonic vibrator unit to heat up, thereby causing the resonant frequency of the ultrasonic vibrator unit to change. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an ultrasonic vibrator unit that can reduce the influence of the vibration of the horn on the external structure connected to the ultrasonic vibrator unit.

[0005] The present invention also provides an ultrasonic processing device having the ultrasonic vibrator unit.

[0006] According to the first aspect of the present invention, the ultrasonic vibrator unit includes:

[0007] Piezoelectric elements, used to generate vibrations;

[0008] A variable amplitude rod, one end of which is connected to the piezoelectric element and is used to change the amplitude of vibration generated by the piezoelectric element. The variable amplitude rod is sleeved with a mounting piece, and the mounting piece is provided with a plurality of vibration-damping through grooves, and the vibration-damping through grooves pass through both sides of the mounting piece. The mounting piece is also provided with a connecting structure for connecting to an external structure, and the connecting structure is located on the far side of the vibration-damping through groove relative to the axis of the variable amplitude rod.

[0009] The ultrasonic vibrator unit according to the embodiment of the present invention has at least the following beneficial effects: by setting a plurality of vibration-damping grooves penetrating both sides of the mounting member on the mounting member, part of the propagation path of the axial vibration on the horn on the mounting member is blocked, so that the energy of the vibration reaching the external structure connected to the vibration-damping groove on the far side of the horn relative to the horn is reduced, thereby effectively reducing the influence of the axial vibration of the horn on the external structure, and even if there is a large vibration at the contact position between the mounting member and the horn, it can be ensured that the connection position between the external structure and the mounting member does not vibrate axially or the amplitude of the axial vibration is very small. Therefore, the mounting member in the ultrasonic vibrator unit in the embodiment of the present invention is not set at the node position, so that the axial vibration on the horn will not affect the external structure, and the influence of the radial vibration at the node position on the horn on the ultrasonic vibrator unit can be avoided.

[0010] According to some embodiments of the present invention, the connection structure includes a plurality of connection holes, and the connection holes are located on the far side of the vibration-damping through slot relative to the axis of the amplitude transformer.

[0011] According to some embodiments of the present invention, the vibration-damping through groove is in the shape of an arc, and the center of the central arc line of the vibration-damping through groove is located on the axis of the amplitude transformer.

[0012] According to some embodiments of the present invention, a plurality of the vibration-damping through slots are symmetrically distributed on the mounting member relative to the axis of the amplitude transformer.

[0013] According to some embodiments of the present invention, the mounting member is provided with a first vibration-damping blind groove on one side along the axial direction of the amplitude converter, and the first vibration-damping blind groove is arranged on the proximal side of the connecting structure relative to the axis of the amplitude converter; or, the mounting member is provided with a first vibration-damping blind groove on both sides along the axial direction of the amplitude converter, and the first vibration-damping blind grooves on both sides are arranged on the proximal side of the connecting structure relative to the axis of the amplitude converter.

[0014] According to some embodiments of the present invention, the first vibration-damping blind groove is an annular groove, and the center of the first vibration-damping blind groove is located on the axis of the amplitude transformer.

[0015] According to some embodiments of the present invention, the ultrasonic vibrator unit also includes a piezoelectric component limiter, which is mounted on the amplitude variation rod, and the piezoelectric component limiter is located at one end of the amplitude variation rod connected to the piezoelectric element, and the piezoelectric component limiter is connected to the piezoelectric element.

[0016] According to some embodiments of the present invention, the piezoelectric component limiter is provided with a second vibration-damping blind groove on one side along the axial direction of the amplitude converter, or the piezoelectric component limiter is provided with a second vibration-damping blind groove on both sides along the axial direction of the amplitude converter.

[0017] An ultrasonic processing device according to a second aspect of the present invention includes:

[0018] An ultrasonic cutter, the ultrasonic cutter comprising the ultrasonic vibrator unit, a cutter handle and a cutter as in the embodiment of the first aspect of the present invention, the cutter handle being connected to the mounting member and sleeved on the outside of the ultrasonic vibrator unit, the cutter being located at the other end of the ultrasonic vibrator unit connected to the piezoelectric element, and the cutter being connected to the horn;

[0019] The device body comprises a main shaft, and the main shaft is connected to the tool handle.

[0020] According to the ultrasonic processing equipment in some embodiments of the present invention, the ultrasonic vibrator unit also includes a piezoelectric component limiter, the piezoelectric component limiter is sleeved on the amplitude change rod, the piezoelectric component limiter is located at the end of the amplitude change rod connected to the piezoelectric element, the tool handle is provided with a plurality of clamping holes at positions corresponding to the piezoelectric component limiter, a clamping member is passed through the clamping hole, the clamping member is supported on the piezoelectric component limiter, and the plurality of clamping members are used to fix the piezoelectric component limiter.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 is a schematic diagram of an ultrasonic vibrator unit in one embodiment of the present invention;

[0024] Figure 2 For the present invention Figure 1 An exploded schematic diagram of an ultrasonic vibrator unit of an embodiment;

[0025] Figure 3 is a schematic diagram of an ultrasonic cutter in one embodiment of the present invention;

[0026] Figure 4 For the present invention Figure 3 A cross-sectional view of the ultrasonic tool along line AA in the embodiment.

[0027] Reference numerals:

[0028] Piezoelectric element 100, amplitude changing rod 200, amplitude changing part 210, mounting part 300, vibration damping through groove 310, first vibration damping blind groove 311, connecting hole 320, piezoelectric component limiter 400, piezoelectric component fixing part 410, second vibration damping blind groove 420, clamping hole 430, clamping part 440, tool handle 510, tool 520, spindle 600. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present invention, "several" means more than one, and "more" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] Reference Figure 1 and Figure 2In one embodiment of the present invention, an ultrasonic vibrator unit is provided, comprising a piezoelectric element 100, a horn 200 and a mounting member 300. The piezoelectric element 100 is used to generate vibration; one end of the horn 200 is connected to the piezoelectric element 100, and the horn 200 is used to change the amplitude of the vibration generated by the piezoelectric element 100. The mounting member 300 is sleeved on the horn, and a plurality of vibration-damping through grooves 310 are provided on the mounting member, and the vibration-damping through grooves 310 run through both sides of the vibration-damping through grooves 310. The mounting member 300 is also provided with a connection structure for connecting with an external structure, and the connection structure is located on the far side of the vibration-damping through grooves 310 on the mounting member 300 relative to the axis of the horn 200.

[0035] The piezoelectric inverse effect of the piezoelectric element 100 can convert a high-frequency electrical signal into a high-frequency mechanical vibration. The horn 200 is a structure for changing the amplitude of the vibration generated by the piezoelectric element 100. The structure and working principle of the piezoelectric element 100 and the horn 200 are common knowledge in the art and will not be described in detail in this application.

[0036] In some embodiments of the present invention, the amplitude transformer 200 includes an amplitude transformer 210, which is located between the piezoelectric element 100 and the mounting member 300, one end of which is connected to the piezoelectric element 100, and the cross-sectional area of ​​the amplitude transformer 210 gradually decreases from the end connected to the piezoelectric element 100 along the axial direction of the amplitude transformer 200 to the other end, so that the vibration generated by the piezoelectric element 100 increases in amplitude after passing through the amplitude transformer 210, so as to reach the amplitude required for machining or other operations. The amplitude transformer 210 can be set to a truncated cone shape.

[0037] The node position of the horn 200 refers to the position on the horn 200 where the amplitude is zero during the propagation of the vibration generated by the piezoelectric element 100 on the horn 200 at the resonant frequency of the ultrasonic vibrator unit. The node position of the horn 200 can be obtained by calculation or detection by relevant instruments.

[0038] The mounting member 300 is a structure used to connect the ultrasonic vibrator unit to an external structure. In the ultrasonic processing equipment, the external structure connected to the mounting member 300 is the handle of the ultrasonic tool. The mounting member 300 can be set as a disc structure to facilitate processing and assembly. The mounting member 300 can be processed integrally with the horn 200; the mounting member 300 can also be fixedly sleeved on the horn 200 through a connecting member, for example, a plurality of threaded holes are opened on the side edge of the mounting member 300, and screws, screws and other threaded connecting members are set in the threaded holes, and the mounting member 300 is tightened on the horn 200.

[0039] The mounting member 300 can be connected to the external structure by a threaded connection. Figure 1In some embodiments of the present invention, the connection structure of the mounting member 300 includes a plurality of connection holes 320, and the connection holes 320 are located on the far side of the vibration-damping through groove 310 relative to the axis of the horn 200. The connection hole 320 is a through hole or threaded hole structure used to connect the ultrasonic vibrator unit to the external structure. The external structure can be connected to the connection hole 320 by means of connectors such as screws and bolts, so that it can be fixedly connected to the ultrasonic vibrator unit. The method of opening the connection hole 320 is easy to process and simple to connect. The connection hole 320 can pass through both sides of the mounting member 300, or it can be set on the side edge of the flange 300. A threaded sleeve or other connection structure can also be set on the mounting member 300 to connect with the external structure.

[0040] During the operation of the ultrasonic vibrator unit, the axial vibration on the horn 200 will be transmitted to the mounting member 300, and the vibration-damping grooves 310 on the mounting member 300 that penetrate both sides of the mounting member 300 can block the propagation path of the axial vibration on the horn 200 on the mounting member 300, so the axial vibration reaching the vibration-damping grooves 310 will change the path and propagate in other directions. In the process of changing the propagation path, the energy of the axial vibration is attenuated. As the propagation distance increases, the axial vibration energy loss increases. The external structure is connected to the far side of the vibration-damping grooves 310 relative to the horn 200. Therefore, after the axial vibration on the horn 200 passes through the blocking effect of the vibration-damping grooves 310, the energy of the axial vibration reaching the connection position on the mounting member 300 connected to the external structure is reduced, so that the energy of the axial vibration transmitted to the external structure is also reduced, thereby reducing the influence of the axial vibration of the horn 200 on the external structure. After the external structure and the mounting member 300 are fixed by connecting members such as threads and screws, the external structure will not vibrate axially. The ultrasonic vibrator unit in the embodiment of the present invention is suitable for ultrasonic processing equipment used for mechanical processing, ultrasonic surgical equipment used for medical treatment and other ultrasonic application equipment.

[0041] The vibration-damping slots 310 may be arc slots, square slots, or slots of other shapes. The more the number of vibration-damping slots 310 is, the better the effect of reducing the transmission of vibration on the horn 200 to the mounting member 300 is. However, the vibration-damping slots 310 should be arranged within a reasonable number range to avoid affecting the structural strength of the mounting member 300.

[0042] The plurality of vibration-damping slots 310 can be symmetrically distributed on the mounting member 300 about the axis of the horn 200, so that the propagation path of the vibration on the mounting member 300 is more uniform, so that the overall vibration of the mounting member 300 is more balanced. It is understandable that the plurality of vibration-damping slots 310 can also be arranged on the mounting member 300 in other distribution modes, which can also achieve the vibration-damping effect on the mounting member 300.

[0043] The node position of the horn 200 refers to the position on the horn 200 where the amplitude is zero during the propagation of the vibration generated by the piezoelectric element 100 on the horn 200 at the resonant frequency of the ultrasonic vibrator unit. The node position of the horn 200 can be obtained by calculation or detection of relevant instruments. Therefore, the position where the horn 200 is connected to the external structure is usually set at the node position to avoid the influence of the axial vibration on the horn 200 on the external structure. However, in the actual operation of the ultrasonic vibrator unit, due to the change of load or the influence of the temperature of the external structure, the resonant frequency of the ultrasonic vibrator unit is prone to drift, resulting in a change in the node position, so that the axial vibration on the horn 200 will still be transmitted to the external structure connected to the ultrasonic vibrator unit. In addition, although the axial vibration at the node position is the smallest, the radial vibration at the node position is the largest. Since the external structure fixedly connected to the mounting member 300 cannot vibrate radially, the kinetic energy generated by the radial vibration on the horn 200 will be converted into heat energy, causing the ultrasonic vibrator unit to heat up, thereby causing the resonant frequency of the ultrasonic vibrator unit to change, causing the node position to drift. Therefore, the axial vibration of the horn 200 will still affect the external structure, causing wear or damage to the external structure.

[0044] The ultrasonic vibrator unit in the embodiment of the present invention blocks the propagation path of the axial vibration on the horn 200 on the mounting member 300 by setting a plurality of vibration-damping through grooves 310 penetrating both sides of the mounting member 300, so as to reduce the energy of the axial vibration reaching the external structure connected to the vibration-damping through grooves 310 on the far side of the horn 200, thereby effectively reducing the influence of the axial vibration of the horn 200 on the external structure. Even if there is a large vibration at the contact position between the mounting member 300 and the horn 200, it can be ensured that the connection position between the external structure and the mounting member 300 does not vibrate axially or the amplitude of the axial vibration is very small. Therefore, the mounting member 300 in the ultrasonic vibrator unit in the embodiment of the present invention is not set at the node position, so that the axial vibration on the horn 200 will not affect the external structure, and the influence of the radial vibration at the node position on the horn 200 on the ultrasonic vibrator unit can be avoided.

[0045] Reference Figure 1 In some embodiments of the present invention, the vibration-damping slot 310 is in the shape of an arc, and the center of the central arc line of the vibration-damping slot 310 is located on the axis of the horn 200, so that a plurality of vibration-damping slots 310 are distributed around the horn 200. Usually, the horn 200 is a cylindrical structure, and the axial vibration on the horn 200 propagates along the circumference of the horn 200 toward the mounting member 300. The vibration-damping slots 310 distributed around the horn 200 can block the propagation path of the axial vibration on the mounting member 300 along the circumferential direction, thereby having a better vibration-damping effect.

[0046] The curvature of the central arc line of the vibration-damping through groove 310 is set too small, and the propagation path of the vibration on the mounting member 300 cannot be blocked. The curvature of the central arc line of the vibration-damping through groove 310 is set too large, which may affect the structural strength of the mounting member 300. In the embodiment of the present invention, the curvature of the central arc line of the vibration-damping through groove 310 is set between 10° and 179°.

[0047] Reference Figure 1 In some embodiments of the present invention, the connection holes 320 are symmetrically distributed on the mounting member 300 relative to the axis of the amplitude transformer 200, so that after the external structure is connected to the ultrasonic vibrator unit through the connection holes 320, the stress distribution on the external structure and the mounting member 300 is more uniform, so that the connection effect between the mounting member 300 and the external structure is more stable.

[0048] Reference Figure 1 and Figure 2 In some embodiments of the present invention, the mounting member 300 is provided with a first vibration-damping blind groove 311 on one side along the axial direction of the horn 200, or the mounting member 300 is provided with the first vibration-damping blind groove 311 on both sides along the axial direction of the horn 200. The first vibration-damping blind groove 311 is provided on the proximal side of the connecting structure relative to the axis of the horn 200. The vibration-damping through groove 310 needs to penetrate both sides of the mounting member 300, thereby reducing the structural strength of the mounting member 300. The first vibration-damping blind groove 311 is recessed from one side surface of the mounting member 300 to the other side, so that the first vibration-damping blind groove 311 can partially block the propagation path of the vibration on the mounting member 300, but the first vibration-damping blind groove 311 will not penetrate the mounting member 300, so the influence on the structural strength of the mounting member 300 can be reduced. The first vibration-damping blind groove 311 is provided on the proximal side of the connection position of the mounting member 300 with the external structure relative to the horn 200, which can further reduce the vibration at the position of the connecting hole 320. The first vibration-damping blind groove 311 can be arranged on the proximal side of the vibration-damping through groove 310 relative to the horn 200. The number of the first vibration-damping blind grooves 311 can be one or more. It is understandable that the more the number of the first vibration-damping blind grooves 311 is arranged, the better the vibration-damping effect on the external structure.

[0049] The first vibration-damping blind groove 311 can be set as a square groove, an annular groove or a blind groove of other shapes. It can be understood that the first vibration-damping blind groove 311 is provided on both sides of the mounting member 300 along the axial direction of the horn 200, which has a better blocking effect on the propagation of vibration on the mounting member 300 than the mounting member 300 is only provided with the first vibration-damping blind groove 311 on one side along the axial direction of the horn 200. In the embodiment where the first vibration-damping blind groove 311 is provided on both sides of the mounting member 300 along the axial direction of the horn 200, the first vibration-damping blind grooves 311 on both sides of the mounting member 300 can be staggered.

[0050] Reference Figure 1 and Figure 2 In some embodiments of the present invention, the first vibration-damping blind groove 311 is an annular groove, and the center of the first vibration-damping blind groove 311 is located on the axis of the horn 200. The horn 200 is usually a cylindrical structure, and the axial vibration on the horn 200 is transmitted to the mounting member 300 along the circumferential direction of the horn 200. The circular first vibration-damping blind groove 311 is concentrically arranged with the cross section of the horn 200 at the position connected to the mounting member 300, and can partially block the propagation path of the axial vibration on the vibration-damping through groove 310 along the circumferential direction, thereby having a better vibration-damping effect.

[0051] Reference Figure 1 and Figure 2 In some embodiments of the present invention, the ultrasonic vibrator unit further includes a piezoelectric component stopper 400 and a piezoelectric component fixing member 410. The piezoelectric component stopper 400 is sleeved on the horn 200, and the piezoelectric component stopper 400 is located at one end where the horn 200 is connected to the piezoelectric element 100. The end where the horn 200 is connected to the piezoelectric element 100 is the node position of the horn 200. At the resonant frequency, the axial vibration of the horn 200 at this position is the smallest, and the radial vibration is the largest. The piezoelectric component stopper 400 is arranged at this position, and is least affected by the axial vibration of the horn 200. In addition, the piezoelectric component stopper 400 can increase the stiffness of the ultrasonic vibrator unit to adapt to the radial vibration of the horn 200, and avoid the mounting member 300 with a plurality of vibration-reducing through grooves 310 having too small structural stiffness and radial deformation. The piezoelectric component stopper 400 can be set as a disc structure to facilitate processing and assembly.

[0052] Reference Figure 1 and Figure 2 In some embodiments of the present invention, the ultrasonic vibrator unit further includes a piezoelectric component fixing part 410. The piezoelectric element 100 is provided with a fixing through hole, and the piezoelectric component limiting part 400 is provided with a threaded hole. The piezoelectric component fixing part 410 is inserted into the fixing through hole and the threaded hole, and is threadedly connected with the piezoelectric component limiting part 400. The piezoelectric component fixing part 410 and the piezoelectric component limiting part 400 are respectively held at both ends of the piezoelectric element 100. The piezoelectric component fixing part 410 can be a threaded connector such as various screws, bolts with nuts, etc. The piezoelectric component fixing part 410 and the piezoelectric component limiting part 400 are respectively held at both ends of the piezoelectric element 100, so that the two ends of the piezoelectric element 100 are respectively limited by the piezoelectric component fixing part 410 and the piezoelectric component limiting part 400, and the piezoelectric element 100 is firmly fixed on one side of the horn 200. In addition, the piezoelectric component fixing member 410 is threadedly connected to the piezoelectric component limiting member 400, so that the piezoelectric component fixing member 410 and the piezoelectric component limiting member 400 can be threadedly disassembled, which is convenient for the subsequent maintenance and replacement of the ultrasonic vibrator unit.

[0053] Reference Figure 1 and Figure 2 In some embodiments of the present invention, the piezoelectric component stopper 400 is provided with second vibration-damping blind grooves 420 on both sides along the axial direction of the horn 200. The second vibration-damping blind grooves 420 are recessed from one side surface of the piezoelectric component stopper 400 to the other side, so that the second vibration-damping blind grooves 420 can partially block the propagation path of the radial vibration of the horn 200 on the piezoelectric component stopper 400, reduce the amplitude of the radial vibration on the piezoelectric component stopper 400, and reduce the influence of the radial vibration of the horn 200 on the piezoelectric component stopper 400.

[0054] The second vibration-damping blind groove 420 can be set as an annular groove, and the center of the second vibration-damping blind groove 420 can be set on the axis of the amplitude transformer 200, so that the second vibration-damping blind groove 420 can partially block the propagation path of radial vibration on the piezoelectric component limiter 400 along the circumferential direction, thereby having a better vibration-damping effect.

[0055] Reference Figure 3 and Figure 4 In an embodiment of the present invention, an ultrasonic machining device is further provided, comprising an ultrasonic cutter 520 and a device body. The ultrasonic cutter 520 comprises the ultrasonic vibrator unit, a cutter handle 510 and a cutter 520 in the above embodiment of the present invention, the cutter handle 510 is connected to the mounting member 300 and sleeved on the outside of the ultrasonic vibrator unit, the cutter 520 is located at the other end of the ultrasonic vibrator unit connected to the piezoelectric element 100, and the cutter 520 is connected to the horn 200. The device body comprises a main shaft 600, which is connected to the cutter handle 510.

[0056] During the machining process, the prior art usually fixes the tool handle 510 to the node position on the horn 200 of the ultrasonic vibrator unit so that the axial vibration will not be transmitted to the rotor of the main shaft 600. However, during the machining process, due to the change of load or the temperature of the tool handle 510, the resonant frequency of the ultrasonic vibrator unit is prone to drift, resulting in a change in the node position, so that the vibration will be transmitted from the horn 200 to the tool handle 510, causing the main shaft 600 to be damaged.

[0057] In the ultrasonic machining device in the embodiment of the present invention, the propagation path of the axial vibration transmitted from the horn 200 to the mounting member 300 is blocked by the vibration-damping through slot 310, thereby reducing the energy of the axial vibration reaching the tool handle 510 connected to the far side of the vibration-damping through slot 310 relative to the horn 200. After the tool handle 510 is fixed to the mounting member 300, the tool handle 510 will not vibrate axially or the amplitude of the axial vibration on the tool handle 510 is very small, thereby effectively avoiding damage to the spindle 600. The tool handle 510 of the ultrasonic machining device in the embodiment of the present invention can be fixed at a non-node position on the horn 200, and the tool handle 510 will not vibrate axially, and the radial vibration of the non-node position is small relative to the node position, thereby reducing the influence of the radial vibration on the horn 200 on the ultrasonic vibrator unit.

[0058] Reference Figure 3 and Figure 4 In some embodiments of the present invention, the ultrasonic vibrator unit in the ultrasonic processing equipment in one embodiment of the present invention also includes a piezoelectric component limiter 400, the piezoelectric component limiter 400 is sleeved on the amplitude transformer 200, the piezoelectric component limiter 400 is located at one end where the amplitude transformer 200 is connected to the piezoelectric element 100, the tool handle 510 is provided with a plurality of clamping holes 430 at the corresponding position of the piezoelectric component limiter 400, the clamping holes 430 are penetrated by clamping members 440, the clamping members 440 are supported on the piezoelectric component limiter 400, and the plurality of clamping members 440 are used to fix the piezoelectric component limiter 400.

[0059] The plurality of clamping members 440 can hold the piezoelectric component stopper 400 from multiple directions, so that the piezoelectric component stopper 400 can be fixed in the handle 510. Figure 4 The piezoelectric component limiting member 400 is provided with clamping members 440 on the upper and lower sides thereof, and the two clamping members 440 are respectively pressed against the piezoelectric component limiting member 400 on the upper and lower sides thereof to fix the piezoelectric component limiting member 400.

[0060] Since the mounting member 300 is provided with a vibration-damping through groove 310, the structural strength and rigidity of the mounting member 300 are affected, and the ultrasonic vibrator unit may move radially or deform radially during vibration. After the piezoelectric component stopper 400 is clamped, it is constrained, which improves the rigidity of the ultrasonic vibrator unit, and the ultrasonic vibrator unit can resist radial movement or radial deformation.

[0061] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. An ultrasonic vibrator unit, characterized in that: include: Piezoelectric elements, used to generate vibrations; A horn, one end of which is connected to the piezoelectric element and is used to change the amplitude of vibration generated by the piezoelectric element, the horn is sleeved with a mounting piece, the mounting piece is provided with a plurality of vibration-damping through grooves, the vibration-damping through grooves run through both sides of the mounting piece, the mounting piece is also provided with a connecting structure for connecting to an external structure, the connecting structure is located on the far side of the vibration-damping through groove relative to the axis of the horn; as well as A piezoelectric component stopper, wherein the piezoelectric component stopper is sleeved on the amplitude change rod, the piezoelectric component stopper is located at one end of the amplitude change rod connected to the piezoelectric element, and the piezoelectric component stopper is connected to the piezoelectric element; Wherein, one end of the amplitude transformer connected to the piezoelectric element is a node position of the amplitude transformer, and the mounting member avoids the node position.

2. The ultrasonic vibrator unit according to claim 1, characterized in that: The connection structure comprises a plurality of connection holes, and the connection holes are located at the far side of the vibration-damping through slot relative to the axis of the amplitude transformer.

3. The ultrasonic vibrator unit according to claim 1, characterized in that: The vibration-damping through groove is in the shape of an arc, and the center of the central arc line of the vibration-damping through groove is located on the axis of the amplitude rod.

4. The ultrasonic vibrator unit according to claim 1, characterized in that: The plurality of vibration-damping through grooves are symmetrically distributed on the mounting member relative to the axis of the amplitude transformer.

5. The ultrasonic vibrator unit according to claim 1, characterized in that: The mounting member is provided with a first vibration-damping blind groove on one side along the axial direction of the amplitude transformer, and the first vibration-damping blind groove is provided on the proximal side of the connecting structure relative to the axis of the amplitude transformer; or, the mounting member is provided with a first vibration-damping blind groove on both sides along the axial direction of the amplitude transformer, and the first vibration-damping blind grooves on both sides are provided on the proximal side of the connecting structure relative to the axis of the amplitude transformer.

6. The ultrasonic vibrator unit according to claim 5, characterized in that: The first vibration-damping blind groove is an annular groove, and the center of the first vibration-damping blind groove is located on the axis of the amplitude transformer.

7. The ultrasonic vibrator unit according to claim 1, characterized in that: The piezoelectric component stopper is provided with a second vibration-damping blind groove on one side along the axial direction of the amplitude transformer, or the piezoelectric component stopper is provided with a second vibration-damping blind groove on both sides along the axial direction of the amplitude transformer.

8. Ultrasonic processing equipment, characterized in that include: An ultrasonic cutter, the ultrasonic cutter comprising an ultrasonic vibrator unit, a cutter handle and a cutter according to any one of claims 1 to 7, the cutter handle being connected to the mounting member and sleeved on the outside of the ultrasonic vibrator unit, the cutter being located at the other end of the ultrasonic vibrator unit connected to the piezoelectric element, and the cutter being connected to the horn; The device body comprises a main shaft, and the main shaft is connected to the tool handle.

9. Ultrasonic processing equipment, characterized in that include: An ultrasonic cutter, the ultrasonic cutter comprising an ultrasonic vibrator unit, a cutter handle and a cutter according to any one of claims 1 to 7, the cutter handle being connected to the mounting member and sleeved on the outside of the ultrasonic vibrator unit, the cutter being located at the other end of the ultrasonic vibrator unit connected to the piezoelectric element, and the cutter being connected to the horn; The tool handle is provided with a plurality of clamping holes at positions corresponding to the piezoelectric component limiting part, and a clamping part is passed through the clamping holes. The clamping part is supported on the piezoelectric component limiting part, and the plurality of clamping parts are used to fix the piezoelectric component limiting part.

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