阅读说明：本技术 Rv减速器摆线轮超声滚压过程中的变形控制装置及方法 (Deformation control device and method in ultrasonic rolling process of cycloidal gear of RV reducer ) 是由 屈盛官 吴志兵 王金涛 胡雄风 张亚龙 李小强 耿建伟 邓云庆 郭斌 于 2020-12-28 设计创作，主要内容包括：本发明公开了一种RV减速器摆线轮超声滚压过程中的变形控制装置及方法,所述装置包括夹具总成、超声滚压刀具和信号传输线路,夹具总成包括定位元件、夹紧块、轴承座、永磁吸块底座、轮廓传感器和控制器,轴承座内设置有滚动轴承,且轴承座高度可调地连接在永磁吸块底座上,定位元件的第一端与滚动轴承固定连接,并穿过轴承座,定位元件的第二端与夹紧块可拆卸连接,轮廓传感器和控制器均设置在轴承座上,且轮廓传感器与控制器连接；超声滚压刀具上设置有气压控制器,气压控制器通过信号传输线路与控制器连接。本发明可以显著地提高轮齿的硬度和强度并改善其表面的耐磨性和耐蚀性,提高加工质量和加工效率,延长摆线轮的使用寿命。(The invention discloses a deformation control device and a method in an ultrasonic rolling process of a cycloidal gear of an RV reducer, wherein the device comprises a clamp assembly, an ultrasonic rolling cutter and a signal transmission line, the clamp assembly comprises a positioning element, a clamping block, a bearing seat, a permanent magnet suction block base, a profile sensor and a controller, a rolling bearing is arranged in the bearing seat, the bearing seat is connected to the permanent magnet suction block base in a height-adjustable manner, the first end of the positioning element is fixedly connected with the rolling bearing and penetrates through the bearing seat, the second end of the positioning element is detachably connected with the clamping block, the profile sensor and the controller are both arranged on the bearing seat, and the profile sensor is connected with the controller; the ultrasonic rolling cutter is provided with an air pressure controller, and the air pressure controller is connected with the controller through a signal transmission line. The invention can obviously improve the hardness and the strength of the gear teeth, improve the wear resistance and the corrosion resistance of the surface of the gear teeth, improve the processing quality and the processing efficiency and prolong the service life of the cycloid gear.)

1. A deformation control device in the ultrasonic rolling process of a cycloidal gear of an RV reducer is characterized by comprising a clamp assembly, an ultrasonic rolling cutter and a signal transmission line, wherein the clamp assembly comprises a positioning element, a clamping block, a bearing seat, a permanent magnet suction block base, a profile sensor and a controller, a rolling bearing is arranged in the bearing seat, the bearing seat is connected to the permanent magnet suction block base in a height-adjustable manner, a first end of the positioning element is fixedly connected with the rolling bearing and penetrates through the bearing seat, a second end of the positioning element is detachably connected with the clamping block, the profile sensor and the controller are both arranged on the bearing seat, and the profile sensor is connected with the controller; and an air pressure controller is arranged on the ultrasonic rolling cutter and is connected with the controller through a signal transmission line.

2. The deformation control device according to claim 1, wherein the first end of the positioning element is provided with a positioning shoulder and a transition shoulder, the positioning shoulder and the transition shoulder being fixedly connected with the rolling bearing.

3. The deformation control device according to claim 1, wherein the second end of the positioning element is provided with a positioning shaft and a positioning surface, the end of the positioning shaft is provided with a section of thread, the center of the clamping block is provided with an opening, the outer side of the clamping block is contacted with a locking nut matched with the thread, and the thread penetrates through the opening of the clamping block and then is connected with the locking nut.

4. The deformation control device of claim 3, wherein a washer is disposed between the clamping block and the lock nut.

5. The deformation control device according to claim 1, wherein the fixture assembly further comprises two lifting screws, two sections of threaded holes are respectively formed in two sides of the bottom of the bearing seat, two through holes are respectively formed in two sides of the permanent magnet suction block base, and the lifting screws, the threaded holes and the through holes are in one-to-one correspondence;

each lifting screw is in threaded connection with the corresponding threaded hole and is matched with the corresponding through hole, so that the bearing seat is connected to the permanent magnet suction block base in a height-adjustable manner.

6. The deformation control device according to claim 1, wherein the clamping block is provided with three claw heads, three elastic members are arranged inside the clamping block, three clamping grooves and three clamping screws are arranged on the circumference of the clamping block, and the claw heads, the elastic members, the clamping grooves and the clamping screws are in one-to-one correspondence;

each claw head is contacted with the corresponding elastic part in the clamping block, and each clamping screw is arranged in the corresponding clamping groove and is connected with the corresponding claw head so as to limit the corresponding claw head to axially move in the range of the corresponding clamping groove.

7. The deformation control device according to any one of claims 1 to 6, wherein a handle switch is arranged at one end of the permanent magnet suction block base, and the permanent magnet suction block base and the machine tool processing table top are adsorbed and fixed or disassembled by rotating the handle switch.

8. The deformation control device according to any one of claims 1 to 6, wherein a telescopic rod is provided at an upper portion of the bearing housing, and the profile sensor is provided at a top end of the telescopic rod so as to be adjustable in position in a vertically telescopic manner with the telescopic rod.

9. The deformation control device according to any one of claims 1 to 6, wherein the controller is disposed outside the bearing housing.

10. A deformation control method in an ultrasonic rolling process of a cycloidal gear of an RV reducer is realized on the basis of the device of any one of claims 1-9, and is characterized by comprising the following steps:

installing a workpiece on a positioning element of the clamp assembly, positioning the workpiece through a second end of the positioning element, and applying a clamping force to the clamping block to clamp the workpiece; after the workpiece is installed, connecting the two ends of the clamp assembly with the machine tool through a triangular chuck and a tip on the machine tool respectively; the permanent magnet suction block base is adsorbed to the machine tool machining table board by rotating a handle switch on the permanent magnet suction block base, and the height of the bearing seat relative to the permanent magnet suction block base is adjusted to a proper position; mounting an ultrasonic rolling tool on a rotary tool rest of a machine tool;

before processing, setting safety contour parameters of each section of a workpiece on a controller; in the machining process, when the profile sensor detects that the workpiece deforms until the profile parameters reach a preset safety value, a signal is sent to the controller, the controller controls the air pressure controller on the ultrasonic rolling cutter through the signal transmission line, and then the air pressure parameters of the air pressure gauge in the machining process are controlled, so that the force applied to the workpiece by the rolling head on the ultrasonic rolling cutter is changed, and deformation control is achieved.

Technical Field

The invention relates to a deformation control device and method in an ultrasonic rolling process of a cycloidal gear of an RV reducer, and belongs to the technical field of machining and manufacturing of RV reducers.

Background

The cycloid wheel is a core component in the RV reducer, the tooth profile of the gear teeth is complex, and the requirement on the machining process is high. With the continuous development of the RV reducer towards high precision, high power and long service life, the bearing capacity between the contact surfaces of the cycloidal gear and the roller pin is continuously increased, the contact stress between the gear tooth contact pair is further increased, and the magnitude of the contact stress is a key factor influencing the wear degree and the fatigue life of the contact pair. The ultrasonic rolling is to deform the surface of the material by means of static pressure applied to a working tool bit and ultrasonic mechanical vibration to form a surface strengthening layer. The surface strengthening layer can improve the hardness and fatigue performance of the material surface, more importantly, residual stress is formed on the surface layer, and the residual stress layer can effectively reduce the effective working stress of a workpiece in the service process, so that cracks are initiated on the subsurface layer of the workpiece, the crack propagation rate is reduced, and the good wear resistance and fatigue performance of the structural part are improved. The deformation of the gear teeth is prevented in the rolling process, because the surface quality of the gear teeth and the geometric accuracy of the tooth profile have a decisive effect on the transmission accuracy and the working performance of the speed reducer. By developing the related tool and method for strengthening the surface of the machined cycloidal tooth profile and controlling deformation, the hardness and the strength of the gear teeth can be obviously improved, so that the wear resistance and the corrosion resistance of the surface are improved, and the service life of the cycloidal gear is prolonged.

Disclosure of Invention

The invention aims to solve the technical problems of wear and fatigue failure of a contact pair in the contact pair of a cycloid gear and a rolling needle in an RV reducer, easy deformation in the ultrasonic rolling process of the surface of the contact pair and the like, and provides a deformation control device in the ultrasonic rolling process of the cycloid gear of the RV reducer, which has reasonable structural design, good clamping stability and simple use method, can roll a plurality of workpieces by one-time clamping by arranging a profile sensor and a controller on a clamp assembly and mutually matching with an air pressure controller on an ultrasonic rolling cutter, can set safe profile parameters of each section of the workpiece in advance before processing, can monitor the profile parameters of the processed workpiece in real time by the profile sensor in the processing process, controls the rolling pressure by controlling the air pressure borne by the ultrasonic rolling cutter by the controller, and further effectively controls the deformation of the workpiece in the rolling process, thereby obviously improving the hardness and the strength of the gear teeth, improving the wear resistance and the corrosion resistance of the surface of the gear teeth, improving the processing quality and the processing efficiency and prolonging the service life of the cycloid gear.

The invention aims to provide a deformation control method in the ultrasonic rolling process of the cycloidal gear of the RV reducer.

The first purpose of the invention can be achieved by adopting the following technical scheme:

a deformation control device in the ultrasonic rolling process of a cycloidal gear of an RV reducer comprises a clamp assembly, an ultrasonic rolling cutter and a signal transmission line, wherein the clamp assembly comprises a positioning element, a clamping block, a bearing seat, a permanent magnet suction block base, a profile sensor and a controller, a rolling bearing is arranged in the bearing seat, the bearing seat is connected to the permanent magnet suction block base in a height-adjustable manner, a first end of the positioning element is fixedly connected with the rolling bearing and penetrates through the bearing seat, a second end of the positioning element is detachably connected with the clamping block, the profile sensor and the controller are both arranged on the bearing seat, and the profile sensor is connected with the controller; and an air pressure controller is arranged on the ultrasonic rolling cutter and is connected with the controller through a signal transmission line.

Furthermore, a positioning shaft shoulder and a transition shaft shoulder are arranged at the first end of the positioning element and are fixedly connected with the rolling bearing.

Furthermore, the second end of locating element is provided with location axle and locating surface, the end of location axle is provided with one section screw thread, press from both sides the center of tight piece and be provided with the trompil, press from both sides the outside contact of tight piece and have the lock nut with screw thread looks adaptation, the screw thread is passed and is connected with lock nut behind the trompil of pressing from both sides tight piece.

Furthermore, a gasket is arranged between the clamping block and the locking nut.

Furthermore, the fixture assembly also comprises lifting screws, two sides of the bottom of the bearing block are respectively provided with a section of threaded hole, two sides of the permanent magnet suction block base are respectively provided with a through hole, the two lifting screws are two, and the lifting screws, the threaded holes and the through holes are in one-to-one correspondence;

each lifting screw is in threaded connection with the corresponding threaded hole and is matched with the corresponding through hole, so that the bearing seat is connected to the permanent magnet suction block base in a height-adjustable manner.

Furthermore, the clamping block is provided with three claw heads, three elastic pieces are arranged inside the clamping block, three clamping grooves and three clamping screws are circumferentially arranged on the clamping block, and the claw heads, the elastic pieces, the clamping grooves and the clamping screws are in one-to-one correspondence;

each claw head is contacted with the corresponding elastic part in the clamping block, and each clamping screw is arranged in the corresponding clamping groove and is connected with the corresponding claw head so as to limit the corresponding claw head to axially move in the range of the corresponding clamping groove.

Furthermore, one end of the permanent magnet suction block base is provided with a handle switch, and the permanent magnet suction block base and the machine tool machining table board are adsorbed by rotating the handle switch to be fixed or disassembled.

Furthermore, the upper portion of bearing frame is provided with the telescopic link, profile sensor sets up the top at the telescopic link, can carry out the adjustment of flexible position from top to bottom along with the telescopic link.

Further, the controller is arranged on the outer side of the bearing seat.

The second purpose of the invention can be achieved by adopting the following technical scheme:

a deformation control method in an ultrasonic rolling process of a cycloidal gear of an RV reducer is realized based on the device, and comprises the following steps:

installing a workpiece on a positioning element of the clamp assembly, positioning the workpiece through a second end of the positioning element, and applying a clamping force to the clamping block to clamp the workpiece; after the workpiece is installed, connecting the two ends of the clamp assembly with the machine tool through a triangular chuck and a tip on the machine tool respectively; the permanent magnet suction block base is adsorbed to the machine tool machining table board by rotating a handle switch on the permanent magnet suction block base, and the height of the bearing seat relative to the permanent magnet suction block base is adjusted to a proper position; mounting an ultrasonic rolling tool on a rotary tool rest of a machine tool;

before processing, setting safety contour parameters of each section of a workpiece on a controller; in the machining process, when the profile sensor detects that the workpiece deforms until the profile parameters reach a preset safety value, a signal is sent to the controller, the controller controls the air pressure controller on the ultrasonic rolling cutter through the signal transmission line, and then the air pressure parameters of the air pressure gauge in the machining process are controlled, so that the force applied to the workpiece by the rolling head on the ultrasonic rolling cutter is changed, and deformation control is achieved.

Compared with the prior art, the invention has the following beneficial effects:

the clamping device can simply and conveniently position the workpieces through the positioning element, is quick and convenient to operate, can clamp a plurality of workpieces at one time through the clamping block, avoids influencing the positioning of the workpieces, uniformly controls the clamping force, and has high processing efficiency; the bearing seat is arranged on the permanent magnet suction block base in a height-adjustable manner, so that the operation of fixing and adjusting the position of the bearing seat is simpler and more convenient; the clamp assembly is provided with the profile sensor and the controller, the profile sensor and the controller are matched with the air pressure controller on the ultrasonic rolling cutter, the safety profile parameters of each section of the workpiece are set before processing, the profile parameters of the processed workpiece can be monitored in real time and the deformation in the processing process can be effectively controlled through the interaction of the profile sensor and the controller, and the rolling pressure applied to the workpiece by the rolling head on the ultrasonic rolling cutter is controlled in real time, so that the deformation of the profile of the workpiece is accurately controlled, and the workload and the working difficulty of operators are reduced; with the rapid development of the RV reducer with high precision, high power and long service life, the machining efficiency and the machining stability and even the overall reliability and the service life of the RV reducer are obviously improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a deformation control device in an ultrasonic rolling process of a cycloidal gear of an RV reducer according to an embodiment of the present invention.

Fig. 2 is an exploded view of the structure of a deformation control device in the ultrasonic rolling process of the cycloid gear of the RV reducer according to the embodiment of the present invention.

Fig. 3 is a schematic perspective view of a fixture assembly in a deformation control device in an ultrasonic rolling process of a cycloidal gear of an RV reducer according to an embodiment of the present invention.

Fig. 4 is an exploded view of the structure of a clamp assembly in the deformation control device during the ultrasonic rolling process of the cycloid gear of the RV reducer according to the embodiment of the present invention.

Fig. 5 is a schematic perspective view of an ultrasonic rolling tool in a deformation control device in the ultrasonic rolling process of the cycloid gear of the RV reducer according to the embodiment of the present invention.

Fig. 6 is a schematic perspective view of a positioning element in the deformation control device in the ultrasonic rolling process of the cycloid gear of the RV reducer according to the embodiment of the present invention.

Fig. 7 is a transparent schematic view of a three-dimensional structure of one angle of a clamping block in a deformation control device in the ultrasonic rolling process of the cycloid gear of the RV reducer according to the embodiment of the present invention.

Fig. 8 is a transparent schematic view of a three-dimensional structure of another angle of a clamping block in the deformation control device in the ultrasonic rolling process of the cycloid gear of the RV reducer according to the embodiment of the present invention.

Fig. 9 is a schematic processing process diagram of the deformation control device in the ultrasonic rolling process of the cycloid gear of the RV reducer according to the embodiment of the present invention.

Wherein, 1-clamp assembly, 101-positioning element, 1011-positioning shaft shoulder, 1012-transition shaft shoulder, 1013-positioning shaft, 1014-positioning surface, 1015-screw thread, 102-clamping block, 1021-opening, 1022-claw head, 1023-elastic element, 1024-clamping groove, 1025-clamping screw, 103-bearing seat, 1031-threaded hole, 104-permanent magnetic suction block base, 1041-through hole, 1042-handle switch, 105-profile sensor, 106-controller, 107-rolling bearing, 108-retainer ring, 109-lifting screw, 110-telescopic rod, 111-locking nut, 112-gasket, 2-ultrasonic rolling cutter, 201-air pressure controller, 202-rolling head, 3-signal transmission line, 4-the workpiece.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Example (b):

as shown in fig. 1 to 5, the embodiment provides a deformation control device in the ultrasonic rolling process of a cycloidal gear of an RV reducer, the device comprises a clamp assembly 1, an ultrasonic rolling cutter 2 and a signal transmission line 3, wherein the clamp assembly 1 comprises a positioning element 101, a clamping block 102, a bearing seat 103, a permanent magnetic suction block base 104, a profile sensor 105 and a controller 106, a rolling bearing 107 is installed in the bearing seat 103, a retainer ring 108 is installed on the rolling bearing 107, the bearing seat 103 is connected to the permanent magnet block base 104 with adjustable height, the positioning element 101 has a first end and a second end opposite to the first end, the first end of the positioning element 101 is fixedly connected to the rolling bearing 107, the second end of the positioning element 101 is detachably connected with the clamping block 102, the contour sensor 105 and the controller 106 are both arranged on the bearing seat 103, and the contour sensor 105 is connected with the controller 106; the ultrasonic rolling tool 2 is provided with an air pressure controller 201, the air pressure controller 201 is connected with the controller 106 through a signal transmission line 3, the device can roll a plurality of workpieces through one-time clamping, safe profile parameters of each section of the workpieces can be set in advance before machining, the profiles of the workpieces can be detected in real time through the profile sensor 105 in the machining process, the controller 106 is used for transmitting signals to the air pressure controller 201 on the ultrasonic rolling tool 2 to control the air pressure borne by the ultrasonic rolling tool 2 so as to control the rolling pressure, further the deformation of the workpieces in the rolling process is effectively controlled, the hardness and the strength of gear teeth are obviously improved, the wear resistance and the corrosion resistance of the surfaces of the gear teeth are improved, the machining quality and the machining efficiency are improved, and the service life of the cycloid gear is prolonged.

In order to connect the bearing seat 103 to the permanent magnet attraction block base 104 with adjustable height, the fixture assembly 1 of this embodiment further includes two lifting screws 109, two sections of threaded holes 1031 are respectively disposed on two sides of the bottom of the bearing seat 103, two through holes 1041 are respectively disposed on two sides of the permanent magnet attraction block base 104, the two lifting screws 109 are disposed in a one-to-one correspondence relationship with the lifting screws 109, the threaded holes 1031 and the through holes 1041 are respectively, each lifting screw 109 is in threaded connection with a corresponding threaded hole and is matched with a corresponding through hole, so that the bearing seat 103 can be finely adjusted up and down by screwing the lifting screw 109, and the height of the bearing seat 103 relative to the permanent magnet attraction block base 104 is properly adjusted by screwing the lifting screw 109.

Further, one end of the permanent magnetic suction block base 104 is provided with a handle switch 1042, the permanent magnetic suction block base 104 and the machine tool machining table are fixed or disassembled by rotating the handle switch 1042, and the height of the bearing seat 103 is adjusted to a proper position by properly adjusting the lifting screw 109, so that the bearing seat 103 is fixed.

In order to install the profile sensor 105 on the bearing seat 103, the telescopic rod 110 is installed on the upper portion of the bearing seat 103, the profile sensor 105 is installed at the top end of the telescopic rod 110, the telescopic position can be adjusted up and down along with the telescopic rod 110, and the deformation condition of the profile of a workpiece in the machining process can be monitored in real time; the controller 106 is arranged on the outer side of the bearing seat 103, and the controller 106 can receive signals from the profile sensor 105 and send the received signals to the air pressure controller 201 through the signal transmission line 3, so that the air pressure parameters of the air pressure gauge in the machining process are controlled, and the force applied to the workpiece by the rolling head 202 is changed.

As shown in fig. 1 to 8, the first end of the positioning element 101 is a left end, the second end is a right end, the left end of the positioning element 101 is provided with a positioning shoulder 1011 and a transition shoulder 1012, the positioning shoulder 1011 and the transition shoulder 1012 are fixedly connected with the rolling bearing 107, and the positioning element 101 can be driven by the machine tool spindle to rotate freely; the right end of the positioning element 101 is provided with a positioning shaft 1013 and a positioning surface 1014, the positioning shaft 1013 and the positioning surface 1014 can be used for respectively positioning the axial direction and the radial direction of a workpiece during operation, in order to realize the detachable connection between the right end of the positioning element 101 and the clamping block 102, the tail end of the positioning shaft 1013 is provided with a section of screw 1015, the center of the clamping block 102 is provided with an opening 1021, the outer side of the clamping block 102 is contacted with a locking nut 111 matched with the screw, the screw 1015 passes through the opening 1021 of the clamping block 102 and then is connected with the locking nut 111, and the clamping block 102 can be axially moved to clamp or dismount the workpiece by screwing the locking nut 111; in order to protect the clamping block 102, a washer 112 is provided between the clamping block 102 and the lock nut 111.

Furthermore, three claw heads 1022 are arranged on the clamping block 102, three elastic members 1023 are arranged inside the clamping block 102, the elastic members 1023 are springs, three clamping grooves 1024 and three clamping screws 1025 are arranged on the clamping block 102 in the circumferential direction, and the claw heads 1022, the elastic members 1023, the clamping grooves 1024 and the clamping screws 1025 are in one-to-one correspondence; each claw head contacts with the corresponding elastic member 1023 inside the clamping block 102 at 1022, and each locking screw 1025 is arranged in the corresponding locking groove 1024 and connected with the corresponding claw head 1022 to limit the axial movement of the corresponding claw head 1022 within the range of the corresponding locking groove 1024, so as to avoid affecting the positioning of the workpiece and facilitate the uniform distribution of the clamping force when the workpiece is clamped.

The working principle of the deformation control device in the ultrasonic rolling process of the cycloidal gear of the RV reducer is as follows:

mounting a workpiece on a positioning element 101 of the clamp assembly 1, axially and radially positioning the workpiece through a positioning shaft 1013 and a positioning surface 1014 of the positioning element 101, screwing a lock nut 111, and applying a clamping force to a gasket 112 and a clamping block 102 to clamp the workpiece; after a workpiece is clamped, two ends of the clamp assembly 1 are respectively connected with the machine tool through a triangular chuck and a tip on the machine tool; rotating a handle switch 1042 on the permanent magnet block base 104 to adsorb the permanent magnet block base 104 and the machine tool processing table, finely adjusting lifting screws 109 at two ends, adjusting the height of a bearing seat 103 relative to the permanent magnet block base 104 to a proper position, and finely adjusting the height of a profile sensor 105 through an expansion link 110 to enable the profile sensor to detect the profile of a workpiece; the ultrasonic rolling tool 2 is arranged on a rotary tool rest of the machine tool, and the controller 106 is connected with the air pressure controller 201 on the ultrasonic rolling tool 2 through the signal transmission line 3. Before processing, the controller 106 sets safe profile parameters of each section of the workpiece, and in the processing process, when the profile sensor 105 detects that the profile parameters of the workpiece reach preset safe values, signals are sent to the controller 106, and the controller 106 controls the air pressure controller 201 on the ultrasonic rolling tool 2 to further control the air pressure parameters of an air pressure gauge in the processing process, so that the magnitude of force applied to the workpiece by the rolling head 202 on the ultrasonic rolling tool 2 is changed, and the purpose of controlling deformation is achieved.

As shown in fig. 1 to 9, the processing procedure of the deformation control device in the ultrasonic rolling process of the cycloid gear of the RV reducer of the present embodiment includes the following steps:

s1, the workpiece 4 to be machined is mounted on the positioning shaft 1013 at the first end of the positioning element 101 through the central hole, the positioning shaft 1013 and the positioning surface 1014 complete the positioning of the workpiece 4, and since the two end surfaces of the workpiece 4 are finished and the position error is almost negligible, the end surfaces of the previous workpiece 4 can be used for positioning to clamp a plurality of workpieces 4 at one time.

S2, the clamping block 102 is mounted on the second end (right end) of the positioning element 101, the three claws 1022 of the clamping block 102 are attached to the workpiece 4, the washer 112 is mounted on the right end of the clamping block 102, and the lock nut 111 is engaged with the thread 105 of the positioning element 101 and tightened to clamp the workpiece 4.

S3, after the clamp assembly 1 and the workpiece 4 are installed, the clamp assembly 1 is installed on a machine tool through a triangular chuck and a tip on the machine tool, meanwhile, the position of the clamp assembly 1 is fixed, so that the positioning element 101 can rotate under the driving of a main shaft of the machine tool, the permanent magnet attraction block base 104 and a machining table top of the machine tool are attracted by rotating a handle switch 1042 on the permanent magnet attraction block base 104, and the lifting screw 109 is properly adjusted to enable the height of the bearing seat 103 to be proper, so that the bearing seat 103 is fixed.

S4, finely adjusting the height of the profile sensor 105 through the telescopic rod 110 to enable the profile sensor 105 to detect the profile of the workpiece 4; the controller 106 is connected with the air pressure controller 201 on the ultrasonic rolling tool 2 through the signal transmission line 3, so that the signal of the controller 106 can be normally transmitted to the air pressure controller 201, and further the air pressure parameter of the air pressure gauge in the machining process is controlled, and the magnitude of the force applied to the workpiece 4 by the rolling head 202 on the ultrasonic rolling tool 2 is changed.

In conclusion, the workpiece can be simply and conveniently positioned through the positioning element, the operation is rapid and convenient, a plurality of workpieces can be clamped at one time through the clamping block, the influence on the positioning of the workpieces is avoided, the clamping force is uniformly controlled, and the machining efficiency is high; the bearing seat is arranged on the permanent magnet suction block base in a height-adjustable manner, so that the operation of fixing and adjusting the position of the bearing seat is simpler and more convenient; the clamp assembly is provided with the profile sensor and the controller, the profile sensor and the controller are matched with the air pressure controller on the ultrasonic rolling cutter, the safety profile parameters of each section of the workpiece are set before processing, the profile parameters of the processed workpiece can be monitored in real time and the deformation in the processing process can be effectively controlled through the interaction of the profile sensor and the controller, and the rolling pressure applied to the workpiece by the rolling head on the ultrasonic rolling cutter is controlled in real time, so that the deformation of the profile of the workpiece is accurately controlled, and the workload and the working difficulty of operators are reduced; with the rapid development of the RV reducer with high precision, high power and long service life, the machining efficiency and the machining stability and even the overall reliability and the service life of the RV reducer are obviously improved.

The above description is only for the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the scope of the present invention.