CN212420605U

CN212420605U - Positioning device for ultrasonic rolling

Info

Publication number: CN212420605U
Application number: CN202020899031.6U
Authority: CN
Inventors: 李兰花
Original assignee: Wuxi Longchangxing Mould Steel Co ltd
Current assignee: Jiangsu Longchangxing New Material Technology Co ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-01-29
Anticipated expiration: 2030-05-25

Abstract

The utility model relates to a positioner for ultrasonic wave roll extrusion processing is applied to ultrasonic wave roll extrusion processing technical field, and it includes the positioning seat that sets up on the workstation, and one side that the positioning seat deviates from the workstation has seted up the mounting groove, rotates on the diapire of mounting groove to be connected with the pivot, and the pivot is equipped with the gear in one side of keeping away from the tank bottom; two sliding grooves are formed in one side, away from the workbench, of the positioning seat, a rack is connected to each sliding groove in a sliding mode, the two racks are meshed with the gear at the same time, and one end, away from the gear, of each rack is provided with a abutting plate; the pivot is fixedly connected with the turbine between the diapire of gear and mounting groove, and the swivelling joint has the worm that meshes mutually with the turbine in the positioning seat. The utility model discloses a support tight board and fasten the mould steel on the positioning seat, the operator of being convenient for carries out accurate location to not unidimensional mould steel, has improved the precision to the mould steel processing to reduce the roughness of mould steel.

Description

Positioning device for ultrasonic rolling

Technical Field

The utility model belongs to the technical field of ultrasonic wave roll extrusion processing technique and specifically relates to a positioner for ultrasonic wave roll extrusion processing is related to.

Background

The ultrasonic rolling is to utilize the characteristic of cold plasticity of metal at normal temperature and apply ultrasonic waves to grind the surface of the metal without a grinder, so that the surface of the metal part meets the requirement of more ideal surface roughness, and the surface of the part is ironed; meanwhile, ideal compressive stress is generated on the surface of the part, and the microhardness, the wear resistance, the fatigue strength and the fatigue life of the surface of the part are improved.

Chinese patent No. CN110508671A discloses an ultrasonic-assisted flexible roll forming device and method for micro grooves on the surface of a plate, the device includes a workbench, a striker plate, a workpiece, a roll tool head, an amplitude transformer, an energy converter, an ultrasonic generator and a hydraulic system, the ultrasonic generator is connected with the energy converter, the lower end of the energy converter is connected with the amplitude transformer, the lower end of the amplitude transformer is connected with the roll tool head, the roll tool head directly acts on the workpiece, the workpiece is located on the workbench, and the striker plate is located on the workbench and used for positioning the workpiece; the hydraulic system acts on the amplitude transformer and provides static pressure for the rolling tool head through the amplitude transformer.

The above prior art solutions have the following drawbacks: the operator is when processing not unidimensional mould steel, and the operator can't adjust the position of striker plate to the operator of being not convenient for carries out accurate location to unidimensional mould steel, leads to the mould steel to appear the possibility of removing in the in-process of processing easily, makes the surface accuracy of the mould steel of processing not high.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, one of the purposes of the utility model is to provide a positioner for ultrasonic rolling processing, its advantage is: through abutting against the tight board with the mould steel fastening on the positioning seat, the operator of being convenient for carries out accurate location to the not unidimensional mould steel, has improved the precision to the mould steel processing to reduce the roughness of mould steel.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a positioning device for ultrasonic rolling processing comprises a positioning seat arranged on a workbench, wherein one side of the positioning seat, which is far away from the workbench, is provided with a mounting groove, the bottom wall of the mounting groove is rotatably connected with a rotating shaft, and one side of the rotating shaft, which is far away from the bottom of the groove, is provided with a gear; two sliding grooves are formed in one side, away from the workbench, of the positioning seat, a rack is connected to each sliding groove in a sliding mode, the two racks are meshed with the gear at the same time, teeth of the two racks are arranged oppositely, one end, away from the gear, of each rack is provided with a abutting plate, and the two abutting plates are parallel to each other; the worm wheel is fixedly connected between the gear and the bottom wall of the mounting groove of the rotating shaft, a worm meshed with the worm wheel is rotatably connected in the positioning seat, the positioning seat extends out of one end of the worm along the length direction, and a driving mechanism used for driving the positioning seat is arranged between the workbench and the positioning seat.

Through adopting above-mentioned technical scheme, the operator will treat the mould steel of processing and place two on the positioning seat between the tight board, the operator rotates worm drive turbine and rotates after that, the turbine rotates through pivot drive gear, two racks of gear simultaneous drive slide in the spout, make two racks drive two and support the tight board and move to relative one side, until two support the tight board and support tightly on the mould steel, support tight board this moment and fasten the mould steel on the positioning seat, actuating mechanism drive mould steel moves on the workstation simultaneously, in order to realize carrying out the purpose of roll extrusion processing to the mould steel, thereby be convenient for the operator carries out accurate location to the mould steel of unidimensional, and then improve the precision to mould steel processing, in order to reduce the roughness of mould steel.

The present invention may be further configured in a preferred embodiment as: the driving mechanism comprises a transverse driving piece and a longitudinal driving piece, the transverse driving piece comprises a moving plate arranged between a positioning seat and a workbench, one side of the moving plate, which is far away from the workbench, is provided with a sliding groove along the length direction, a sliding block is connected in the sliding groove in a sliding manner, the sliding block is fixedly connected to the positioning seat, a screw rod in threaded connection with the sliding block is rotatably connected in the sliding groove, and one end of the moving plate along the length direction is provided with a first motor of which an output shaft is connected with the screw rod; the longitudinal driving piece is arranged between the moving plate and the workbench, and the longitudinal driving piece and the transverse driving piece are identical in structure.

Through adopting above-mentioned technical scheme, the mould steel is by the in-process of roll extrusion, first motor drive lead screw rotates, lead screw drive sliding block moves along the length direction in sliding groove, sliding groove restricts sliding block's moving direction, make sliding block drive positioning seat be linear motion, in order to realize carrying out the purpose of straight line roll extrusion to the mould steel, then movable plate translation among the longitudinal drive piece drive transverse driving spare, the position that needs the processing to the mould steel is changed, in order to realize carrying out the purpose of roll extrusion to whole mould steel, and then improve the precision to mould steel processing, in order to reduce the roughness of mould steel, improve the wearability of mould steel.

The present invention may be further configured in a preferred embodiment as: and a second motor is arranged on one side of the workbench, which is away from the movable plate in the longitudinal driving piece, and an output shaft of the second motor is connected with the movable plate in the longitudinal driving piece.

Through adopting above-mentioned technical scheme, the operator starts the second motor, and the movable plate among the second motor drive longitudinal driving spare rotates, and the movable plate on the longitudinal driving spare drives the movable plate rotation on the transverse driving spare this moment for the positioning seat drives the mould steel and rotates, thereby can realize carrying out diversified rolled object to the mould steel, has further improved the precision to the mould steel processing, in order to improve the wearability of mould steel.

The present invention may be further configured in a preferred embodiment as: two guide grooves are formed in one side, away from the workbench, of the positioning seat, two guide blocks are arranged on one side, facing the positioning seat, of the abutting plate along the length direction, and the two guide blocks are connected in the two guide grooves in a sliding mode respectively.

Through adopting above-mentioned technical scheme, support tight board at the in-process that removes, support tight board and drive the guide block and slide in the guide way, the guide way restricts the moving direction of guide block to the guide block has played the effect of direction to supporting tight board, and then the stability when increasing to supporting tight board and removing, so that the operator presss from both sides the mould steel fast tightly.

The present invention may be further configured in a preferred embodiment as: one side of the abutting plate, which faces the positioning seat, is embedded with a plurality of balls which are abutted against the positioning seat along the length direction, and the balls are all in rolling connection with the abutting plate.

Through adopting above-mentioned technical scheme, support tight board at the in-process that removes, support tight board and move ball and positioning seat and produce the friction for the ball rolls on supporting tight board, and the ball can be with supporting the friction conversion between tight board and the positioning seat and rolling friction this moment, thereby the ball has reduced the frictional force of supporting between tight board and the positioning seat, and then the operator of being convenient for removes and supports tight board, with the smoothness degree when improving and support tight board and remove.

The present invention may be further configured in a preferred embodiment as: one side of each of the two abutting plates opposite to each other is provided with a layer of rubber pad.

Through adopting above-mentioned technical scheme, when supporting tight board and supporting tightly on the mould steel, the rubber pad can fill up the gap between tight board and the mould steel to increase mould steel and support the area of contact between the tight board, and then make supporting tight board firm more support tightly on the mould steel, appear the possibility that removes when reducing the mould steel and being rolled.

The present invention may be further configured in a preferred embodiment as: the worm is equipped with the fixed block along the one end that stretches out the positioning seat, fixed block fixed connection wears to be equipped with the locating lever in the fixed block, locating lever sliding connection is on the fixed block, the positioning seat has seted up a plurality of and locating lever matched with constant head tank, a plurality of on the lateral wall of fixed block one side the constant head tank is along the circumferencial direction evenly distributed of worm.

Through adopting above-mentioned technical scheme, after supporting tight board and pressing from both sides tight mould steel, the operator stop rotating the worm, during the operator inserted the locating lever corresponding constant head tank this moment, the constant head tank had restricted the moving direction of locating lever to the locating lever has restricted the rotation of worm circumferencial direction through the fixed block, leads to supporting the not hard up condition of tight board and takes place in order to reduce the worm gyration.

The present invention may be further configured in a preferred embodiment as: the positioning rod is fixedly connected with a baffle between the fixing block and the positioning seat, a spring is sleeved between the baffle and the fixing block, and two ends of the spring are respectively abutted against the baffle and the fixing block.

Through adopting above-mentioned technical scheme, the operator is when rotating the worm, operator pulling locating lever is to keeping away from one side removal of locating plate, the locating lever drives the baffle and compresses the spring this moment, the spring has elastic restoring force by the compression, when supporting tight board and supporting tightly on the mould steel, the operator loosens the locating lever, the spring is under the effect of elastic restoring force simultaneously, the spring promotes the locating lever through the baffle and supports tightly in the constant head tank, and then the condition that the reduction locating lever breaks away from in the constant head tank takes place, in order to increase the stability of worm.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the die steel is fastened on the positioning seat through the abutting plate, so that an operator can conveniently and accurately position the die steel with different sizes, the machining precision of the die steel is improved, and the surface roughness of the die steel is reduced;

2. the second motor drives the die steel to rotate, so that the purpose of multi-directional rolling of the die steel can be achieved, the machining precision of the die steel is further improved, and the wear resistance of the die steel is improved;

3. carry on spacingly through locating lever and constant head tank to the worm gyration leads to supporting the not hard up condition of tight board and taking place.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is a schematic structural diagram for embodying the positioning seat in this embodiment.

Fig. 3 is a schematic structural diagram for embodying the moving plate of the present embodiment.

Fig. 4 is an enlarged schematic view of a portion a in fig. 2.

Fig. 5 is an enlarged schematic view of a portion B in fig. 2.

In the figure, 1, a workbench; 11. a second motor; 12. a guide groove; 13. a guide block; 14. a ball bearing; 15. a rubber pad; 2. positioning seats; 21. mounting grooves; 22. a rotating shaft; 23. a gear; 24. a chute; 25. a rack; 26. a propping plate; 27. a turbine; 28. a worm; 3. a fixed block; 31. positioning a rod; 32. positioning a groove; 33. a baffle plate; 34. a spring; 4. a transverse drive; 41. moving the plate; 42. a sliding groove; 43. a sliding block; 44. a screw rod; 45. a first motor; 5. a longitudinal drive member; 6. and (5) die steel.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a positioner for ultrasonic wave roll extrusion, including setting up positioning seat 2 on workstation 1, mounting groove 21 has been seted up to one side that positioning seat 2 deviates from workstation 1, rotates on the diapire of mounting groove 21 and is connected with pivot 22, and pivot 22 is equipped with gear 23 in one side cover of keeping away from the mounting groove 21 diapire.

Referring to fig. 2 and 3, two parallel sliding grooves 24 are formed in one side of the positioning seat 2 away from the workbench 1, and the two sliding grooves 24 are uniformly distributed along the circumferential direction of the mounting groove 21 and communicated with the mounting groove 21. Two rack gears 25 are respectively connected in the two mounting grooves 21 in a sliding manner, the teeth of the two rack gears 25 are arranged oppositely, and the two rack gears 25 are meshed with the gear 23 simultaneously. The rotating shaft 22 is sleeved with a turbine 27 between the gear 23 and the bottom wall of the mounting groove 21, and both the turbine 27 and the gear 23 are fixedly connected to the rotating shaft 22. A worm 28 meshed with the worm wheel 27 is rotatably connected in the mounting groove 21, and one end of the worm 28 in the length direction penetrates through the positioning seat 2, so that an operator can rotate the worm 28.

Referring to fig. 2 and 3, the positioning seat 2 is provided with two abutting plates 26 for fixing the mold steel 6 on a side away from the working table 1, the two abutting plates 26 are symmetrically arranged along the central axis of the rotating shaft 22, and the two abutting plates 26 are parallel to each other. The two abutting plates 26 are respectively and fixedly connected to the two racks 25, the abutting plates 26 are fixedly connected to one side of the racks 25 far away from the gear 23, and the abutting plates 26 are perpendicular to the racks 25. When an operator processes the die steel 6, the operator firstly places the die steel 6 on the positioning seat 2 between the two abutting plates 26, then the operator rotates the worm 28, the worm 28 drives the rotating shaft 22 to rotate through the worm wheel 27, and the rotating shaft 22 drives the gear 23 to rotate. The gear 23 drives the two racks 25 to slide in the sliding groove 24, and the sliding groove 24 limits the moving direction of the racks 25, so that the racks 25 drive the abutting plate 26 to make a linear motion.

Referring to fig. 2 and 3, the two racks 25 drive the two abutting plates 26 to move towards the opposite side until the abutting plates 26 abut against the side wall of the die steel 6, so that the purpose of clamping and positioning the die steel 6 is achieved, an operator can conveniently and accurately position the die steels 6 with different sizes, the machining precision of the die steel 6 is improved, and the surface roughness of the die steel 6 is reduced. Meanwhile, one layer of rubber pad 15 is bonded on one side, opposite to the two abutting plates 26, of each rubber pad 15 is made of a rubber material, the rubber is soft and elastic, and deformation is easy to generate, so that gaps between the abutting plates 26 and the die steel 6 can be filled up by the rubber pads 15, the contact area with the die steel 6 is increased, and the firmness of clamping the die steel 6 is enhanced.

Referring to fig. 2 and 4, two guide grooves 12 are opened on one side of the positioning seat 2 away from the workbench 1, and the two guide grooves 12 are respectively opened on two sides of the two sliding grooves 24 away from each other. One side of the abutting plate 26 close to the positioning seat 2 is fixedly connected with two guide blocks 13, and the two guide blocks 13 are respectively connected in the two guide grooves 12 in a sliding manner. In the moving process of the abutting plate 26, the abutting plate 26 drives the guide block 13 to slide along the length direction of the guide groove 12, the guide groove 12 limits the moving direction of the guide block 13, and therefore the guide groove 12 and the guide block 13 play a role in guiding the abutting plate 26, and the stability of the abutting plate 26 in moving is further improved.

Referring to fig. 2 and 3, a plurality of balls 14 are embedded in one side of the tightening plate 26 facing the positioning seat 2 along the length direction, the balls 14 are rotatably connected to the tightening plate 26, and the plurality of balls 14 are all abutted against the positioning seat 2. In the moving process of the tightening plate 26, the tightening plate 26 drives the balls 14 to rub against the positioning seat 2, so that the balls 14 roll. At this time, the balls 14 can convert the friction between the tightening plate 26 and the positioning seat 2 into rolling friction, so that the balls 14 can reduce the friction between the tightening plate 26 and the positioning seat 2, thereby improving the smoothness of the tightening plate 26 during movement and further improving the stability of the tightening plate 26 during movement.

Referring to fig. 2 and 5, one end of the worm 28, which is far away from the positioning seat 2, is fixedly connected with the fixing block 3, a positioning rod 31 which is coaxial with the worm 28 is arranged in the fixing block 3 in a penetrating manner, the positioning rod 31 is connected to the fixing block 3 in a sliding manner, a positioning groove 32 which is matched with the positioning rod 31 is arranged on the positioning seat 2, and the positioning groove 32 is uniformly arranged along the circumferential direction of the worm 28. The positioning rod 31 is fixedly connected with a baffle 33 between the positioning seat 2 and the fixing block 3, a spring 34 is sleeved on the positioning rod 31 between the baffle 33 and the fixing block 3, and two ends of the spring 34 are respectively abutted on the baffle 33 and the fixing block 3. When the positioning rod 31 is inserted into the positioning slot 32, the spring 34 is in a partially compressed state.

Referring to fig. 2 and 5, when the operator rotates the worm 28, the operator pulls the detent lever 31 to move to a side away from the positioning socket 2, and at this time, the retainer 33 and the fixed block 3 press the spring 34, and the spring 34 is compressed and has an elastic restoring force. When the holding plate 26 grips the die steel 6, the operator stops rotating the worm 28 while releasing the positioning rod 31. Then, the spring 34 pushes the positioning rod 31 to abut against the positioning groove 32 through the baffle 33 under the action of elastic restoring force, the positioning groove 32 limits the positioning rod 31, and the positioning rod 31 limits the rotation of the worm 28 in the circumferential direction through the fixing block 3, so that the situation that the worm 28 rotates to cause the abutting plate 26 to loosen is reduced.

Referring to fig. 2 and 3, a driving mechanism for driving the positioning seat 2 is arranged between the positioning seat 2 and the workbench 1, the driving mechanism includes a longitudinal driving member 5 and a transverse driving member 4, and the transverse driving member 4 and the longitudinal driving member 5 have the same structure. The transverse driving member 4 comprises a moving plate 41 arranged between the workbench 1 and the positioning seat 2, a sliding groove 42 is formed in one side, facing the positioning seat 2, of the moving plate 41 along the length direction, the sliding groove 42 is rotatably connected with a screw rod 44 along the length direction, and a sliding block 43 is connected to the screw rod 44 in a threaded manner. Meanwhile, one end of the moving plate 41 in the length direction is fixedly connected with a first motor 45 for driving the screw rod 44 to rotate, and an output shaft of the first motor 45 is fixedly connected with the screw rod 44. The sliding block 43 is matched with the sliding groove 42, the sliding block 43 can slide along the length direction of the sliding groove 42, and the sliding block 43 is fixedly connected to the positioning seat 2. The moving plate 41 of the longitudinal driving unit 5 is disposed between the moving plate 41 of the lateral driving unit 4 and the table 1, and the moving plate 41 of the longitudinal driving unit 5 intersects the moving plate 41 of the lateral driving unit 4 at 90 °.

Referring to fig. 2 and 3, when the die steel 6 is processed, the first motor 45 in the transverse driving member 4 drives the screw rod 44 to rotate, the screw rod 44 drives the sliding block 43 to slide along the length direction of the sliding groove 42, and the sliding groove 42 limits the moving direction of the sliding block 43, so that the sliding block 43 drives the positioning seat 2 to make a linear motion, so as to roll the die steel 6 in the linear direction. Meanwhile, the longitudinal driving piece 5 drives the positioning seat 2 to do longitudinal linear movement, so that the position for processing the die steel 6 is adjusted, the purpose of rolling the whole die steel 6 is achieved, the surface precision of the die steel 6 is improved, and the wear resistance of the die steel 6 is improved. Meanwhile, a second motor 11 is fixedly connected to one side of the workbench 1, which is far away from the positioning seat 2, and an output shaft of the second motor 11 penetrates through the workbench 1 and is connected with a moving plate 41 in the longitudinal driving piece 5. The second motor 11 drives the moving plate 41 to rotate, and the purpose of adjusting the angle of the die steel 6 can be achieved, so that the effect of rolling the die steel 6 in multiple directions is achieved, the surface precision of the die steel 6 is further improved, and the surface roughness of the die steel 6 is reduced.

The implementation principle of the embodiment is as follows: when machining the die steel 6, the operator places the die steel 6 on the positioning socket 2 between the two abutment plates 26. Next, the operator pulls the jumper 31 to move to the side away from the positioning stand 2, and the jumper 31 pushes the spring 34 with the damper 33. Meanwhile, an operator rotates the worm 28, the worm 28 drives the worm wheel 27 to rotate, the worm wheel 27 drives the gear 23 to rotate through the rotating shaft 22, the gear 23 drives the two racks 25 to move simultaneously, the two abutting plates 26 are made to approach each other until the abutting plates 26 clamp the die steel 6 on the positioning seat 2, and therefore the purpose of fixing the die steel 6 is achieved. The operator then releases the positioning rod 31, at which point the spring 34 pushes the positioning rod 31 against the positioning slot 32 via the stop 33 for the purpose of fixing the worm 28.

The operator starts first motor 45 in horizontal driving piece 4 and the vertical driving piece 5 respectively for positioning seat 2 drives mould steel 6 and removes, carries out the mesh of roll extrusion to the realization mould steel 6. Simultaneously, the second motor 11 can drive the positioning seat 2 to rotate so as to change the rolling direction of the die steel 6, further improve the machining precision of the die steel 6, reduce the surface roughness of the die steel 6 and improve the wear resistance of the die steel 6.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a positioner for ultrasonic wave rolling process, is including setting up positioning seat (2) on workstation (1), its characterized in that: a mounting groove (21) is formed in one side, away from the workbench (1), of the positioning seat (2), a rotating shaft (22) is rotatably connected to the bottom wall of the mounting groove (21), and a gear (23) is arranged on one side, away from the bottom of the groove, of the rotating shaft (22);

one side, away from the workbench (1), of the positioning seat (2) is provided with two sliding grooves (24), a rack (25) is connected in each sliding groove (24) in a sliding manner, the two racks (25) are simultaneously meshed with the gear (23), teeth of the two racks (25) are arranged oppositely, one ends, away from the gear (23), of the two racks (25) are provided with abutting plates (26), and the two abutting plates (26) are parallel to each other;

the utility model discloses a positioning seat, including workstation (1), pivot (22), locating seat (2), positioning seat (2) and positioning seat (2), the pivot is fixedly connected with turbine (27) between the diapire of gear (23) and mounting groove (21), swivelling joint has worm (28) with turbine (27) engaged with in positioning seat (2), positioning seat (2) are extended to worm (28) along length direction's one end, be equipped with the actuating mechanism who is used for driving positioning seat (2) between workstation (1) and positioning seat (2).

2. The positioning device for ultrasonic rolling machining according to claim 1, characterized in that: the driving mechanism comprises a transverse driving part (4) and a longitudinal driving part (5), the transverse driving part (4) comprises a moving plate (41) arranged between the positioning seat (2) and the workbench (1), one side, away from the workbench (1), of the moving plate (41) is provided with a sliding groove (42) along the length direction, a sliding block (43) is connected in the sliding groove (42) in a sliding manner, the sliding block (43) is fixedly connected to the positioning seat (2), a screw rod (44) in threaded connection with the sliding block (43) is connected in the sliding groove (42) in a rotating manner, and one end, along the length direction, of the moving plate (41) is provided with a first motor (45) of which an output shaft is connected with the screw rod (44);

the longitudinal driving piece (5) is arranged between the moving plate (41) and the workbench (1), and the longitudinal driving piece (5) and the transverse driving piece (4) are identical in structure.

3. The positioning device for ultrasonic rolling machining according to claim 2, characterized in that: and a second motor (11) is arranged on one side of the workbench (1) departing from the moving plate (41) in the longitudinal driving piece (5), and an output shaft of the second motor (11) is connected with the moving plate (41) in the longitudinal driving piece (5).

4. The positioning device for ultrasonic rolling machining according to claim 1, characterized in that: two guide grooves (12) are formed in one side, deviating from the workbench (1), of the positioning seat (2), two guide blocks (13) are arranged on one side, facing the positioning seat (2), of the abutting plate (26) along the length direction, and the two guide blocks (13) are connected in the two guide grooves (12) in a sliding mode respectively.

5. The positioning device for ultrasonic rolling machining according to claim 1, characterized in that: one side of the abutting plate (26) facing the positioning seat (2) is embedded with a plurality of balls (14) abutting against the positioning seat (2) along the length direction, and the balls (14) are all in rolling connection with the abutting plate (26).

6. The positioning device for ultrasonic rolling machining according to claim 1, characterized in that: one side of each of the two abutting plates (26) opposite to each other is provided with a layer of rubber pad (15).

7. The positioning device for ultrasonic rolling machining according to claim 1, characterized in that: worm (28) are equipped with fixed block (3) along the one end that stretches out positioning seat (2), fixed block (3) fixed connection is on worm (28), wear to be equipped with locating lever (31) in fixed block (3), locating lever (31) sliding connection is on fixed block (3), a plurality of and locating lever (31) matched with constant head tank (32), a plurality of have been seted up on positioning seat (2) the lateral wall towards fixed block (3) one side constant head tank (32) along the circumferencial direction evenly distributed of worm (28).

8. The positioning device for ultrasonic roll finishing as claimed in claim 7, wherein: the positioning rod (31) is fixedly connected with a baffle (33) between the fixing block (3) and the positioning seat (2), a spring (34) is sleeved between the baffle (33) and the fixing block (3) of the positioning rod (31), and two ends of the spring (34) are respectively abutted to the baffle (33) and the fixing block (3).