CN218697896U

CN218697896U - Clamping device is used in automobile wheel hub bearing processing

Info

Publication number: CN218697896U
Application number: CN202222688831.5U
Authority: CN
Inventors: 韩炜婷
Original assignee: Hangzhou Banglei Auto Parts Co ltd
Current assignee: Hangzhou Banglei Auto Parts Co ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2023-03-24
Anticipated expiration: 2032-10-09

Abstract

The utility model belongs to the technical field of the clamping device, specifically be a clamping device is used in processing of automobile wheel hub bearing, including the centre gripping bottom plate, fixed surface has the centre gripping base on the centre gripping bottom plate, first dead slot has been seted up to the centre gripping base, be equipped with fixture in the first dead slot, centre gripping base one side is equipped with actuating mechanism, fixture includes first backup pad, first backup pad both sides are equipped with complementary unit, the utility model discloses a design including outer clamping part mechanism in the bearing, the centre gripping that exists when having solved including outer clamping different parts and the centre gripping that leads to is unstable.

Description

Clamping device is used in automobile wheel hub bearing processing

Technical Field

The utility model belongs to the technical field of the clamping device, especially, relate to a clamping device is used in processing of automobile wheel hub bearing.

Background

In the field of machining, a tooling fixture plays a very important role in the machining process, two important modules in the tooling fixture are a clamping mechanism and a positioning mechanism, and the tooling fixture needs to be frequently applied in the machining of an automobile hub bearing so as to finish the hole machining of an inner flange and an outer flange of the bearing. The traditional clamping device for automobile hub bearing is needed to clamp the device in machining, but in the actual use process, in the bearing fixing machining process, the fixing clamping effect of a workpiece is not good enough, the bearing is easy to loosen, the machining process can be completed only by repeatedly disassembling and assembling, and therefore the clamping device for automobile hub bearing machining is provided for solving the problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome the not enough of prior art, provide a clamping device is used in processing of automobile wheel hub bearing.

The utility model discloses a realize above-mentioned purpose, provide following technical scheme: the utility model provides an automobile wheel hub bearing processing is with clamping device, includes the centre gripping bottom plate, centre gripping bottom plate upper surface is fixed with the centre gripping base, first dead slot has been seted up to the centre gripping base, be equipped with fixture in the first dead slot, centre gripping base one side is equipped with actuating mechanism, fixture includes first backup pad, first backup pad both sides are equipped with complementary unit, first backup pad and first dead slot sliding fit, a plurality of first spouts have been seted up to first backup pad, first spout lower wall has been seted up first sliding tray and has run through first backup pad, it is provided with first transmission post to slide in the first sliding tray, the second dead slot has been seted up to first dead slot bottom, second dead slot internal rotation is provided with first commentaries on classics piece, first helicla flute has been seted up to first commentaries on classics piece, first dead slot inner wall is fixed with a plurality of first supports piece, first spout has been seted up to first support piece, first transmission post lower extreme passes fifth spout and fifth spout sliding fit, first transmission post lower extreme and first helicla flute sliding fit, first transmission post one end is fixed with first helicla flute.

Preferably, the auxiliary mechanism includes a second transmission rod, a second chute is symmetrically formed in the clamping base, the second transmission rod is slidably arranged in the second chute, a first annular plate is fixed to the upper end of the second transmission rod, a first spring is fixed to the lower surface of the first annular plate, one end, away from the first annular plate, of the first spring is fixedly connected with the upper surface of the clamping base, a third hollow groove is formed in the clamping base, a third chute is symmetrically formed in the lower wall of the third hollow groove, a first transmission piece is slidably arranged in the third chute and is fixedly connected with the lower end of the second transmission rod, a first chute is formed in the first transmission piece, a first cylinder is slidably arranged in the first chute, one end, away from the first chute, of the first cylinder is fixedly provided with a first fixing piece, the first fixing piece is slidably matched with the third hollow groove, a second spring is fixed to the inner wall of the third hollow groove, one end, away from the second spring, away from the inner wall of the third hollow groove, is fixedly connected with the first fixing piece, one end, close to the first supporting plate is an oblique angle, and a first supporting piece is formed in the first supporting plate.

Preferably, the driving mechanism includes a driving base, the driving base is provided with a second rotating groove, a second rotating member is rotatably disposed in the second rotating groove, a first tooth member is fixed around the second rotating member, a second spiral groove is formed in the second rotating member, a second transmission column is symmetrically and slidably disposed in the second spiral groove, a second sliding groove is symmetrically formed in the clamping base, a second clamping member is slidably disposed in the second sliding groove, a fourth sliding groove is formed in the clamping base, the fourth sliding groove is communicated with the second rotating groove and the second sliding groove, the second transmission column is slidably disposed in the fourth sliding groove, one end, away from the second spiral groove, of the second transmission column is fixedly connected with the second clamping member, the driving base is provided with a first hole groove, the first hole groove is rotatably provided with a first rotating column, the first rotating column is fixedly connected with the second rotating member, one end, away from the second rotating column, of the first rotating column is fixedly provided with a first rotating rod, the driving base is provided with a third sliding groove, the third sliding groove is communicated with the second rotating groove, the first rotating column is slidably disposed with a V-shaped block, and a third sliding block is slidably disposed in the driving base and is communicated with the first rotating block.

As preferred, first commentaries on classics piece outer lane is fixed with the second tooth spare, the third rotation groove has been seted up to the centre gripping bottom plate, the third rotates the groove and communicates with each other with the second dead slot, the third rotates the inslot internal rotation and is provided with first gear, first gear and second tooth spare meshing, the second through-hole has been seted up to the third rotation groove upper wall, the second through-hole rotates and is provided with the second and rotates the post, the second rotates post and first gear upper surface fixed connection, the second rotates the post and keeps away from first gear one end and is fixed with the second dwang, first gear one side is equipped with fixed establishment.

Preferably, the fixing mechanism comprises a second V-shaped block, the clamping bottom plate is provided with a first V-shaped groove and communicated with a third rotating groove, the second V-shaped block is arranged in the first V-shaped groove in a sliding mode, the upper wall of the first V-shaped groove is provided with a fourth sliding groove, the fourth sliding groove is provided with a third transmission rod in a sliding mode, the lower end of the third transmission rod is fixedly connected with the second V-shaped block, the third transmission rod is fixed with a first plate, a third spring is fixed on the lower surface of the first plate, one end, far away from the first plate, of the third spring is fixedly connected with the upper surface of the clamping bottom plate, the third transmission rod is provided with a first fixing groove, the clamping bottom plate is provided with a second hole groove and communicated with the fourth sliding groove, a first fixing rod is arranged in the second hole in a sliding mode, one end, far away from the fourth sliding groove, of the first fixing rod is fixed with a fourth spring, and one end, far away from the first transmission rod, of the fourth spring is fixedly connected with the side wall of the clamping bottom plate.

Preferably, the thickness of the first clamping piece is the same as the depth of the first sliding groove, fourth hollow grooves are symmetrically formed in the side walls of the first hollow grooves, a first driving plate is arranged in the fourth hollow grooves in a sliding mode, the first driving plate is fixedly connected with the first supporting plate, a fifth spring is fixed to the lower surface of the first driving plate, one end, far away from the first driving plate, of the fifth spring is fixedly connected with the inner wall of the fourth hollow groove

To sum up, the utility model has the advantages that:

the utility model discloses an inside and outside centre gripping to the part comes to accomplish two-way centre gripping to tubular part, set up to scalable state to inside centre gripping simultaneously, when processing the cylindricality part, inside centre gripping part will be in the first backup pad of income, can not influence the processing of cylindricality part, through pressing first backup pad when processing the tubulose part, and through the fixing to first backup pad, make inside centre gripping part stretch out, can place the machined part position at will this moment, need not to make the machined part place and align with first backup pad axis center, will align the axle center automatically in the in-process that inside centre gripping was opened, make the centre gripping convenient and labor-saving more, the staff's of being convenient for operation.

For the driving mechanism, the V-shaped block is arranged to ensure that the gear and the gear cannot rotate, so that the clamping stability is ensured.

Drawings

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

Fig. 2 is a schematic view of the structure of the parts of the clamping mechanism of the present invention.

Fig. 3 is a schematic view of a part of the clamping mechanism of the present invention.

Fig. 4 is a schematic diagram of the position of the auxiliary mechanism part of the present invention.

Fig. 5 is a schematic view of the position of the driving mechanism part of the present invention.

Fig. 6 is a schematic view of the position of the parts between the driving mechanism and the clamping mechanism of the present invention.

Fig. 7 is a schematic view of the position of the clamping mechanism and the first tooth part of the present invention.

Fig. 8 is a schematic view of the position of the fixing mechanism component according to the present invention.

Detailed Description

In order to make the technical field personnel understand the utility model discloses the scheme, will combine the drawing in the embodiment of the utility model below, to the technical scheme in the embodiment of the utility model carries out clear, complete description.

Referring to fig. 1-2, a clamping device for machining an automobile hub bearing comprises a clamping bottom plate 1, wherein a clamping base 2 is fixed on the upper surface of the clamping bottom plate 1, a first empty groove 3 is formed in the clamping base 2, a clamping mechanism 4 is arranged in the first empty groove 3, a driving mechanism 5 is arranged on one side of the clamping base 2, the clamping mechanism 4 comprises a first supporting plate 6, the first supporting plate 6 is arranged, and when supporting force is provided for a machined part, clamping of different machined parts is achieved through changing the position of the first supporting plate 6.

Auxiliary mechanisms 7 are arranged on two sides of the first supporting plate 6, the first supporting plate 6 is in sliding fit with the first empty groove 3, a plurality of first sliding grooves 8 are formed in the first supporting plate 6, a first sliding groove 9 is formed in the lower wall of the first sliding groove 8 and penetrates through the first supporting plate 6, a first transmission column 10 is arranged in the first sliding groove 9 in a sliding mode, a second empty groove 11 is formed in the bottom end of the first empty groove 3, a first rotating part 12 is arranged in the second empty groove 11 in a rotating mode, a first spiral groove 13 is formed in the first rotating part 12, the first supporting column 13 is arranged to be capable of scattering synchronously in the process of scattering all around, the axis of a machined part is enabled to be aligned with the axis of the first supporting plate 6, a plurality of first supporting parts are fixed to the inner wall of the first empty groove 3, a fifth sliding groove is formed in the first supporting part, the lower end of the first transmission column 10 penetrates through the fifth sliding fit with the fifth sliding groove, the lower end of the first transmission column 10 is fixed with a first clamping part 14 far away from one end of the first spiral groove 13.

The auxiliary mechanism 7 comprises a second transmission rod 15, a second sliding groove 16 is symmetrically formed in the clamping base 2, the second transmission rod 15 is arranged in the second sliding groove 16 in a sliding mode, a first annular plate 17 is fixed at the upper end of the second transmission rod 15, the second transmission rod 15 is arranged to transmit downward pressure generated by the first annular plate 17 to a first transmission piece 21, a first spring 18 is fixed on the lower surface of the first annular plate 17, and the first fixing piece 24 automatically drives the first annular plate 17 to reset when reset due to the arrangement of the first spring 18 so as to prepare for next processing.

One end of the first spring 18, which is far away from the first annular plate 17, is fixedly connected with the upper surface of the clamping base 2, the clamping base 2 is provided with a third hollow groove 19, the lower wall of the third hollow groove 19 is symmetrically provided with third sliding grooves 20, the third sliding grooves 20 are provided with first transmission pieces 21 in a sliding manner, the first transmission pieces 21 are fixedly connected with the lower end of the second transmission rod 15, the first transmission pieces 21 are provided with first inclined grooves 22, the first inclined grooves 22 are provided with first cylinders 23 in a sliding manner, one ends of the first cylinders 23, which are far away from the first inclined grooves 22, are fixedly provided with first fixing pieces 24, the first fixing pieces 24 are in sliding fit with the third hollow grooves 19, the inner walls of the third hollow grooves 19 are fixedly provided with second springs 25, one ends of the second springs 25, which are far away from the inner walls of the third hollow grooves 19, are fixedly connected with the first fixing pieces 24, one ends of the first fixing pieces 24, which are close to the first supporting plate 6, oblique angles are arranged to the first fixing pieces 24, so that the descending of the first supporting plate 6 is not influenced, but when the first fixing pieces 24 are aligned with the first supporting grooves 26, the first supporting plates 6, and the first supporting plates 6 are provided with the first supporting grooves 26 corresponding to the first supporting pieces 24.

The driving mechanism 5 includes a driving base 27, the driving base 27 is provided with a second rotating groove 28, a second rotating part 29 is rotationally arranged in the second rotating groove 28, a first tooth 30 is fixed around the second rotating part 29, the second rotating part 29 is provided with a second spiral groove 31, a second transmission column 32 is symmetrically and slidably arranged in the second spiral groove 31, a second sliding groove 33 is symmetrically arranged on the clamping base 2, a second clamping part 34 is slidably arranged in the second sliding groove 33, a fourth sliding groove 35 is arranged on the clamping base 2, the fourth sliding groove 35 is communicated with the second rotating groove 28 and the second sliding groove 33, the second transmission column 32 is slidably arranged in the fourth sliding groove 35, one end of the second transmission column 32, far away from the second spiral groove 31, is fixedly connected with the second clamping part 34, the driving base 27 is provided with a first hole groove 36, the first rotating column 37 is rotatably arranged in the first hole groove 36, the first rotating column 37 is fixedly connected with the second rotating part 29, one end of the first rotating column 37, far away from the second rotating part 29, a third sliding groove 39 is arranged in the second sliding groove, a third sliding block 41 is arranged in the sliding groove 39, and a third sliding block 41 is arranged in the sliding block 41, and a third sliding block 40, and a third sliding block 41 is arranged in the sliding block 40, and is arranged in the sliding block 40.

A second gear 43 is fixed on the outer ring of the first rotating member 12, a third rotating groove 44 is formed in the clamping base plate 1, the third rotating groove 44 is communicated with the second empty groove 11, a first gear 45 is rotationally arranged in the third rotating groove 44, the first gear 45 is meshed with the second gear 43, a second through hole 46 is formed in the upper wall of the third rotating groove 44, a second rotating column 47 is rotationally arranged in the second through hole 46, the second rotating column 47 is fixedly connected with the upper surface of the first gear 45, a second rotating rod 48 is fixed at one end, far away from the first gear 45, of the second rotating column 47, and a fixing mechanism 49 is arranged on one side of the first gear 45.

The fixing mechanism 49 comprises a second V-shaped block 50, the clamping base plate 1 is provided with a first V-shaped groove 51 and communicated with the third rotating groove 44, the second V-shaped block 50 is arranged in the first V-shaped groove 51 in a sliding mode, the upper wall of the first V-shaped groove 51 is provided with a fourth sliding groove 52, the fourth sliding groove 52 is provided with a third transmission rod 53 in a sliding mode, the lower end of the third transmission rod 53 is fixedly connected with the second V-shaped block 50, the third transmission rod 53 is fixed with a first plate 54, a third spring 55 is fixed on the lower surface of the first plate 54, and one end, far away from the first plate 54, of the third spring 55 is fixedly connected with the upper surface of the clamping base plate 1.

The third transmission rod 53 is provided with a first fixing groove 56, the clamping base plate 1 is provided with a second hole groove 57 and communicated with the fourth sliding groove 52, the second hole groove 57 is provided with a first fixing rod 58 in a sliding manner, one end, far away from the fourth sliding groove 52, of the first fixing rod 58 is fixed with a first transmission rod 59, the first transmission rod 59 is fixed with a fourth spring 60, and one end, far away from the first transmission rod 59, of the fourth spring 60 is fixedly connected with the side wall of the clamping base plate 1.

The thickness of the first clamping piece 14 is the same as the depth of the first sliding groove 8, a fourth hollow groove 61 is symmetrically formed in the side wall of the first hollow groove 3, a first transmission plate 62 is arranged in the fourth hollow groove 61 in a sliding mode, the first transmission plate 62 is fixedly connected with the first supporting plate 6, a fifth spring 63 is fixed to the lower surface of the first transmission plate 62, and one end, far away from the first transmission plate 62, of the fifth spring 63 is fixedly connected with the inner wall of the fourth hollow groove 61.

The utility model discloses theory of operation and work flow:

when the product is used, a hub bearing to be machined is placed on the upper surface of the first supporting plate 6 in the first empty groove 3, if a machined part is a solid cylindrical rough blank, after the machined part is placed, the first rotating rod 38 is rotated, the first rotating rod 38 rotates to drive the first rotating column 37 to rotate, the first rotating column 37 rotates to drive the second rotating piece 29 to rotate, the second driving column 32 in the second spiral groove 31 in the second rotating piece 29 moves towards the center of the second spiral groove 31, the second driving column 32 moves to drive the second clamping piece 34 to move, clamping of the part to be machined is completed, after clamping is completed, the third driving column 42 is pushed inwards, the third driving column 42 moves to drive the first V-shaped block 40 to move to the position clamped with the first tooth piece 30, and loosening of clamping of the part caused by rotation of the second rotating piece 29 during machining is prevented.

When the clamping part is a tubular rough blank, the machined part is placed on the upper surface of the first support plate 6, the first support plate 6 moves downwards by pressing the part, the first support plate 6 moves downwards to drive the first transmission plate 62 to move downwards to compress the fifth spring 63, the first support plate 6 moves downwards to align the first support groove 26 with the first fixing part 24, the second spring 25 resets to drive the first fixing part 24 to be clamped into the first support groove 26, the fifth spring 63 is prevented from resetting, after the support of the first support plate 6 is completed, the first transmission column 10 is higher than the first support plate 6 due to the descending of the first support plate 6 and extends into the hole of the tubular part to be machined, the second rotating rod 48 is rotated, the second rotating rod 48 rotates to drive the second rotating column 47 to rotate, the second rotating column 47 rotates to drive the first gear 45 to rotate, the first gear 45 rotates to drive the first tooth 30 to rotate, the second tooth 43 rotates to drive the first rotating column 12 to rotate, the first transmission column 12 rotates to drive the first transmission column 10 in the first spiral groove 13 to move, the first support part is matched with the inner part 14, and the first support chute 14 is matched with the inner part.

When the third transmission rod 53 is pressed, the third transmission rod 53 moves downwards to drive the first plate 54 to move downwards, the third spring 55 is compressed, the second V-shaped block 50 is driven to move downwards to be clamped with the first gear 45, the first gear 45 is prevented from rotating, when the positions of the first fixing groove 56 and the first fixing rod 58 are in the same plane in the process that the third transmission rod 53 moves downwards, the fourth spring 60 resets to drive the first transmission rod 59 to move, and the first transmission rod 59 moves to drive the first fixing rod 58 to be clamped into the first fixing groove 56.

When the processing of the tubular part is finished, the tubular part is taken down, the first annular plate 17 is pressed downwards, the first annular plate 17 presses the first spring 18 downwards to compress and simultaneously drives the second transmission rod 15 to move downwards, the first transmission rod 59 moves downwards to drive the first transmission part 21 to move downwards, the first cylinder 23 slides in the first chute 22 to drive the first fixing part 24 to be far away from the first supporting plate 6, the second spring 25 compresses, the fifth spring 63 resets after the first supporting plate 6 loses the supporting force of the first fixing part 24 to drive the first transmission plate 62 to move upwards, the first transmission plate 62 moves upwards to drive the first supporting plate 6 to move upwards, the first clamping part 14 is collected in the first chute 8, and the influence on the next processing is avoided.

Claims

1. The utility model provides a clamping device is used in processing of automobile wheel hub bearing, a serial communication port, including clamping bottom plate (1), clamping bottom plate (1) upper surface is fixed with clamping base (2), first dead slot (3) have been seted up in clamping base (2), be equipped with fixture (4) in first dead slot (3), clamping base (2) one side is equipped with actuating mechanism (5), fixture (4) are including first backup pad (6), first backup pad (6) both sides are equipped with complementary unit (7), first backup pad (6) and first dead slot (3) sliding fit, a plurality of first spouts (8) have been seted up in first backup pad (6), first spout (8) lower wall has been seted up first sliding tray (9) and has been run through first backup pad (6), it is provided with first transmission column (10) to slide in first sliding tray (9), second dead slot (11) have been seted up to first dead slot (3) bottom, second dead slot (11) internal rotation is provided with first commentaries on classics piece (12).

2. The clamping device for machining the automobile hub bearing is characterized in that a first spiral groove (13) is formed in the first rotating piece (12), a plurality of first supporting pieces (66) are fixed to the inner wall of the first empty groove (3), a fifth sliding groove (65) is formed in the first supporting pieces (66), the lower end of the first transmission column (10) penetrates through the fifth sliding groove (65) to be in sliding fit with the fifth sliding groove (65), the lower end of the first transmission column (10) is in sliding fit with the first spiral groove (13), and a first clamping piece (14) is fixed to one end, away from the first spiral groove (13), of the first transmission column (10).

3. The clamping device for machining the automobile hub bearing, according to claim 1, is characterized in that the auxiliary mechanism (7) includes a second transmission rod (15), the clamping base (2) is symmetrically provided with second sliding grooves (16), the second transmission rod (15) is slidably disposed in the second sliding grooves (16), the upper end of the second transmission rod (15) is fixed with a first annular plate (17), the lower surface of the first annular plate (17) is fixed with a first spring (18), one end of the first spring (18) far away from the first annular plate (17) is fixedly connected with the upper surface of the clamping base (2), the clamping base (2) is provided with a third hollow groove (19), the lower wall of the third hollow groove (19) is symmetrically provided with a third sliding groove (20), the third sliding groove (20) is slidably provided with a first transmission member (21), the first transmission member (21) is fixedly connected with the lower end of the second transmission rod (15), the first transmission member (21) is provided with a first inclined groove (22), the first inclined groove (22) is slidably disposed in the first inclined groove (22), one end of the first cylindrical fixing member (23) far away from the first cylindrical groove (24), and the inner wall of the first cylindrical fixing member (19) is fixedly connected with a second hollow groove (25), second spring (25) keep away from third dead slot (19) inner wall one end and first mounting (24) fixed connection, first mounting (24) are close to first backup pad (6) one end and are the oblique angle, first backup pad (6) are seted up first supporting groove (26) that correspond with first mounting (24).

4. The clamping device for machining the automobile hub bearing, according to claim 1, is characterized in that the driving mechanism (5) includes a driving base (27), the driving base (27) is provided with a second rotating groove (28), a second rotating member (29) is rotatably provided in the second rotating groove (28), first teeth (30) are fixed around the second rotating member (29), the second rotating member (29) is provided with a second spiral groove (31), second transmission columns (32) are symmetrically and slidably provided in the second spiral groove (31), second sliding grooves (33) are symmetrically provided in the clamping base (2), a second clamping member (34) is slidably provided in the second sliding groove (33), the clamping base (2) is provided with a fourth sliding groove (35), the fourth sliding groove (35) is communicated with the second rotating groove (28) and the second sliding groove (33), the second transmission columns (32) are slidably provided in the fourth sliding groove (35), one end of the second transmission columns (32) far away from the second spiral groove (31) is connected with the second clamping member (34), the first rotating column (37) is fixedly provided with the first rotating hole (37), and the first rotating member (29) is fixedly provided with the second rotating groove (34), first rotation post (37) are kept away from second rotation piece (29) one end and are fixed with first rotation pole (38), third sliding tray (39) have been seted up in drive base (27), third sliding tray (39) communicate with each other with second rotation groove (28), third sliding tray (39) slide and are provided with first V-arrangement piece (40), first through-hole (41) have been seted up in drive base (27), first through-hole (41) communicate with each other with third sliding tray (39), it is provided with third drive column (42) to slide in first through-hole (41), third drive column (42) and first V-arrangement piece (40) fixed connection.

5. The clamping device for machining the automobile hub bearing, according to claim 1, is characterized in that a second tooth (43) is fixed to an outer ring of the first rotating member (12), a third rotating groove (44) is formed in the clamping base plate (1), the third rotating groove (44) is communicated with the second empty groove (11), a first gear (45) is rotatably arranged in the third rotating groove (44), the first gear (45) is meshed with the second tooth (43), a second through hole (46) is formed in an upper wall of the third rotating groove (44), a second rotating column (47) is rotatably arranged in the second through hole (46), the second rotating column (47) is fixedly connected with an upper surface of the first gear (45), a second rotating rod (48) is fixed to one end, far away from the first gear (45), of the second rotating column (47), and a fixing mechanism (49) is arranged on one side of the first gear (45).

6. The clamping device for machining the automobile hub bearing, according to claim 5, is characterized in that the fixing mechanism (49) comprises a second V-shaped block (50), the clamping base plate (1) is provided with a first V-shaped groove (51) and communicated with a third rotating groove (44), the second V-shaped block (50) is slidably arranged in the first V-shaped groove (51), the upper wall of the first V-shaped groove (51) is provided with a fourth sliding groove (52), the fourth sliding groove (52) is slidably provided with a third transmission rod (53), the lower end of the third transmission rod (53) is fixedly connected with the second V-shaped block (50), the third transmission rod (53) is fixedly provided with a first plate (54), the lower surface of the first plate (54) is fixedly provided with a third spring (55), one end, far away from the first plate (54), of the third spring (55) is fixedly connected with the upper surface of the clamping base plate (1), the third transmission rod (53) is provided with a first fixing groove (56), the clamping base plate (1) is provided with a second hole groove (57), the fourth sliding groove (58) is communicated with a fourth sliding hole (59), and the first fixing rod (58) is provided with a fourth sliding groove (59), one end of the fourth spring (60), which is far away from the first transmission rod (59), is fixedly connected with the side wall of the clamping bottom plate (1).

7. The clamping device for machining the automobile hub bearing according to claim 2, wherein the thickness of the first clamping piece (14) is the same as the depth of the first sliding groove (8), a fourth hollow groove (61) is symmetrically formed in the side wall of the first hollow groove (3), a first transmission plate (62) is arranged in the fourth hollow groove (61) in a sliding mode, the first transmission plate (62) is fixedly connected with the first supporting plate (6), a fifth spring (63) is fixed to the lower surface of the first transmission plate (62), and one end, away from the first transmission plate (62), of the fifth spring (63) is fixedly connected with the inner wall of the fourth hollow groove (61).