阅读说明：本技术 一种大型轴承圈工件的快速自定心夹紧装置 (Rapid self-centering clamping device for large-sized bearing ring workpiece ) 是由 杨亮 卢阳阳 张恩赫 于 2020-05-22 设计创作，主要内容包括：本发明公开了一种大型轴承圈工件的快速自定心夹紧装置,包括底架、支撑台、对心机构、定位夹持机构和压紧机构。本发明的对心机构能够快速地对轴承圈工件实现对中定心并初步夹紧；定位夹持机构的六个定位卡爪均匀的夹持在工件的六个方向,并采用同步同动加单步微调的方式使工件受力均匀,实现了工件在水平方向上的定位夹紧；压紧机构的三个压紧夹爪实现了工件在垂直方向上的最终压紧固定,从对心机构到定位夹持机构再到压紧机构的动作,能够有效地保证工件加工时的准确位置,再加上伺服电机的运用,使得装夹精度得到明显提高,且本发明整体结构紧凑、安装方便、性能稳定可靠,重复定位精度高,可以大大减轻操作工人劳动强度、提高工作效率。(The invention discloses a rapid self-centering clamping device for a large-scale bearing ring workpiece. The centering mechanism can quickly realize centering and preliminary clamping on a bearing ring workpiece; six positioning claws of the positioning and clamping mechanism are uniformly clamped in six directions of a workpiece, and the workpiece is uniformly stressed by adopting a synchronous and single-step fine adjustment mode, so that the positioning and clamping of the workpiece in the horizontal direction are realized; the three pressing clamping jaws of the pressing mechanism realize final pressing and fixing of the workpiece in the vertical direction, the accurate position of the workpiece during machining can be effectively guaranteed through actions from the centering mechanism to the positioning clamping mechanism and then to the pressing mechanism, and the clamping precision is obviously improved through the application of the servo motor.)

1. The utility model provides a quick self-centering clamping device of large-scale race ring work piece which characterized in that: comprises an underframe (1), a supporting table (4), a centering mechanism, a positioning and clamping mechanism and a pressing mechanism;

the centering mechanism comprises a driving bevel gear (16), three driven bevel gears (17), a first servo motor (14), a first transmission lead screw (18), a movable sliding seat (19), centering claws (20), a first guide rail pair sliding block (21) and a first guide rail pair linear guide rail (22); the driving bevel gear (16) is installed at the center of the fixed bottom plate (15), the shaft end of the driving bevel gear (16) faces downwards and is connected with the first servo motor (14), and the tooth end of the driving bevel gear (16) is meshed with the tooth ends of the three driven bevel gears (17); the shaft end of the driven bevel gear (17) is connected with a first transmission screw rod (18), a movable sliding seat (19) is arranged on the first transmission screw rod (18), the upper part of the movable sliding seat (19) is connected with a centering clamping jaw (20), and the lower part of the movable sliding seat is fixedly connected with a first guide rail pair sliding block (21); the first guide rail pair sliding block (21) is connected with the first guide rail pair linear guide rail (22) in a sliding mode, and the first guide rail pair linear guide rail (22) is installed on the fixed bottom plate (15); the first servo motor (14) drives three driven bevel gears (17) through a driving bevel gear (16), and the three driven bevel gears (17) drive respective centering claws (20) to realize centering or separating motion through respective first transmission screw rods (18) and the driven bevel gears (17); the fixed bottom plate (15) is closely attached to the upper base (3);

the positioning and clamping mechanism comprises an upper base (3), a lower base (2), a rotary supporting gear (7), a driving gear transmission piece (6), driven gear transmission pieces (8), a positioning clamping jaw and a fine adjustment motor (13), wherein the rotary supporting gear (7) is arranged between the upper base (3) and the lower base (2), the rotary supporting gear (7) is simultaneously meshed with a lower gear of one driving gear transmission piece (6) and lower gears of five driven gear transmission pieces (8), the lower shaft end of the driving gear transmission piece (6) is connected with a speed reduction motor (5), an upper gear of the driving gear transmission piece (6) is meshed with a rack (9), an upper gear of each driven gear transmission piece (8) is meshed with a corresponding rack (9), and the positioning clamping jaw is fixedly installed on the rack (9); the speed reducing motor (5) drives the driving gear transmission piece (6) to rotate, the driving gear transmission piece (6) drives the five driven gear transmission pieces (8) to rotate through the rotary supporting gear (7), and the driving gear transmission piece (6) and the five driven gear transmission pieces (8) drive the six positioning clamping jaws to synchronously stretch and retract through the racks (9);

the positioning clamping jaw comprises a movable clamping jaw block (10), a clamping jaw base (11), a spiral guide rod (12) and a fine adjustment motor (13), wherein the movable clamping jaw block (10) is installed on the clamping jaw base (11), the outer end of the movable clamping jaw block (10) is connected with the fine adjustment motor (13) through the spiral guide rod (12), and the fine adjustment motor (13) drives the movable clamping jaw block (10) to perform telescopic motion through the spiral guide rod (12);

the pressing mechanism comprises a fixed support frame (23), a second transmission screw (25), a second servo motor (24), a pressing clamping jaw (26), a second guide rail pair sliding block (27) and a second guide rail pair linear guide rail (28), the fixed support frame (23) is fixedly arranged on the movable jaw block (10), the second servo motor (24) is fixedly arranged on the upper part of the fixed support frame (23), the second guide rail pair linear guide rail (28) is fixedly arranged at the inner side of the fixed support frame (23), the upper end of the second transmission screw rod (25) is connected with the output end of a second servo motor (24), a pressing clamping jaw (26) is mounted on the second transmission screw (25), the pressing clamping jaw (26) is fixedly connected with a second guide rail pair sliding block (27), and the second guide rail pair sliding block (27) is in sliding connection with a second guide rail pair linear guide rail (28); the second servo motor (24) drives the pressing clamping jaw (26) to move up and down through a second transmission screw rod (25).

2. The quick self-centering clamping device for the large-scale bearing ring workpiece according to claim 1, is characterized in that: the size of the driving bevel gear (16) is the same as that of the three driven bevel gears (17), the three driven bevel gears (17) are uniformly distributed along the circumferential direction of the driving bevel gear (16), the three centering jaws (20) are uniformly distributed along the circumferential direction, and each centering jaw (20) is radially arranged.

3. The quick self-centering clamping device for the large-scale bearing ring workpiece according to claim 1, is characterized in that: six gear drive spare altogether of a driving gear driving medium (6) and five driven gear drive spare (8) in the location fixture are along circumference evenly distributed on last base (3), driving gear driving medium (6) and driven gear drive spare (8) all include gear and lower gear, go up the gear and pass through the transmission shaft with lower gear and connect.

4. The quick self-centering clamping device for the large-scale bearing ring workpiece according to claim 1, is characterized in that: six racks (9) in the positioning and clamping mechanism are provided, the structure and the size of each rack (9) are the same, and the racks are uniformly distributed on the upper base (3) along the circumferential direction; six positioning clamping jaws are uniformly distributed along the circumferential direction of the rotary supporting gear (7), and each positioning clamping jaw is arranged along the radial direction of the rotary supporting gear (7); the end parts of the movable jaw blocks (10) of the six positioning jaws are provided with clamping openings.

5. The quick self-centering clamping device for the large-scale bearing ring workpiece according to claim 1, is characterized in that: and a jaw base (11) of the positioning jaw is fixed on the rack (9) through a screw.

6. The quick self-centering clamping device for the large-scale bearing ring workpiece according to claim 1, is characterized in that: the number of the pressing mechanisms is three, and the pressing mechanisms are uniformly distributed along the central circumference of the supporting platform (4).

7. The quick self-centering clamping device for the large-scale bearing ring workpiece according to claim 1, is characterized in that: the chassis (1) is of a frame structure, the upper part of the chassis (1) is provided with a lower base (2), the upper base (3) is arranged above the lower base (2) through four-corner upright posts, and an installation space of a rotary support gear (7) is formed between the upper base (3) and the lower base (2); the supporting platform (4) is arranged above the upper base (3) through a plurality of upright posts, and an installation space of the positioning and clamping mechanism is formed between the supporting platform (4) and the upper base (3).

8. The quick self-centering clamping device for the large-scale bearing ring workpiece according to claim 1, is characterized in that: three centering claws (20) and three pressing mechanisms of the centering mechanism are alternately arranged on the supporting platform (4) along the circumferential direction and are uniformly arranged along the central circumferential direction of the supporting platform (4).

Technical Field

The invention relates to the technical field of mechanical clamps, in particular to a rapid self-centering clamping device for a large-scale bearing ring workpiece.

Background

The bearing is a common part in mechanical equipment, and has the main functions of supporting a mechanical rotating body, reducing the friction coefficient in the motion process of the mechanical rotating body and ensuring the rotation precision of the mechanical rotating body. The bearing ring is an important part for forming the bearing, the function is very important, the size, the structure, the equipment used for manufacturing, the process method and the like of the bearing rings of different types of bearings are different due to various types of the bearings, and in addition, the bearing rings are multiple in processing procedures, complex in process and high in processing precision requirement, so the clamping processing quality of the bearing rings has important influence on the precision, the service life and the performance of the bearings.

However, for clamping large and medium-sized bearing ring workpieces, in the prior art of most factories, the workpieces are usually fixed on a workbench by a pressing plate, and then the centers of the workpieces are gradually adjusted manually by using auxiliary tools such as measuring instruments, in this workpiece clamping manner, the workpiece machining center of the workpieces needs to be corrected every time the workpieces are clamped and corrected, a lot of time is needed for the workpiece machining center of each workpiece clamping and correction, the working efficiency is low, the labor intensity of operators is high, and the correction accuracy of the workpiece machining center is closely related to the experience and technology level of the operators, so the machining accuracy of the workpieces is inevitably influenced by the experience and technology level of the operators and cannot be effectively ensured.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides a rapid self-centering clamping device for a large-scale bearing ring workpiece, which can reduce the labor intensity of operators, improve the working efficiency and ensure the clamping precision.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a rapid self-centering clamping device for a large-scale bearing ring workpiece comprises an underframe, a supporting table, a centering mechanism, a positioning and clamping mechanism and a pressing mechanism;

the centering mechanism comprises a driving bevel gear, three driven bevel gears, a first servo motor, a first transmission screw rod, a movable sliding seat, a centering clamping jaw, a first guide rail pair sliding block and a first guide rail pair linear guide rail; the driving bevel gear is arranged in the center of the fixed bottom plate, the shaft end of the driving bevel gear faces downwards and is connected with the first servo motor, and the tooth end of the driving bevel gear is meshed with the tooth ends of the three driven bevel gears; the shaft end of the driven bevel gear is connected with a first transmission screw rod, a movable sliding seat is arranged on the first transmission screw rod, the upper part of the movable sliding seat is connected with the centering clamping jaw, and the lower part of the movable sliding seat is fixedly connected with a first guide rail pair sliding block; the first guide rail pair sliding block is connected in a sliding mode along a first guide rail pair linear guide rail which is arranged on the fixed bottom plate; the first servo motor drives three driven bevel gears through the driving bevel gear, and the three driven bevel gears drive respective centering claws to realize centering or separating motion through respective first transmission screw rods and driven bevel gears; the fixed bottom plate is closely attached to the upper base;

the positioning and clamping mechanism comprises an upper base, a lower base, a rotary supporting gear, driving gear transmission parts, driven gear transmission parts, positioning clamping jaws and a fine adjustment motor, wherein the rotary supporting gear is arranged between the upper base and the lower base, the rotary supporting gear is simultaneously meshed with a lower gear of one driving gear transmission part and lower gears of five driven gear transmission parts, the lower shaft end of each driving gear transmission part is connected with a speed reduction motor, an upper gear of each driving gear transmission part is meshed with a rack, an upper gear of each driven gear transmission part is meshed with a corresponding rack, and the positioning clamping jaws are fixedly installed on the racks; the speed reduction motor drives the driving gear transmission piece to rotate, the driving gear transmission piece drives the five driven gear transmission pieces to rotate through the rotary supporting gear, and the driving gear transmission piece and the five driven gear transmission pieces drive the six positioning clamping jaws to synchronously extend and retract through the racks;

the positioning clamping jaw comprises a movable clamping jaw block, a clamping jaw base, a spiral guide rod and a fine adjustment motor, wherein the movable clamping jaw block is installed on the clamping jaw base, the outer end of the movable clamping jaw block is connected with the fine adjustment motor through the spiral guide rod, and the fine adjustment motor drives the movable clamping jaw block to perform telescopic motion through the spiral guide rod;

the pressing mechanism comprises a fixed support frame, a second transmission screw rod, a second servo motor, a pressing clamping jaw, a second guide rail pair sliding block and a second guide rail pair linear guide rail, the fixed support frame is fixedly arranged on the movable clamping jaw block, the second servo motor is fixedly arranged at the upper part of the fixed support frame, the second guide rail pair linear guide rail is fixedly arranged at the inner side of the fixed support frame, the upper end of the second transmission screw rod is connected with the output end of the second servo motor, the pressing clamping jaw is arranged on the second transmission screw rod and fixedly connected with the second guide rail pair sliding block, and the second guide rail pair sliding block is slidably connected with the second guide rail pair linear guide rail; and the second servo motor drives the pressing clamping jaw to move up and down through a second transmission screw rod.

Furthermore, the size of the driving bevel gear is the same as that of the three driven bevel gears, the three driven bevel gears are uniformly distributed along the circumferential direction of the driving bevel gear, the three centering jaws are uniformly distributed along the circumferential direction, and each centering jaw is radially arranged.

Further, six gear drive spares of a driving gear drive spare and five driven gear drive spares in the location fixture are along circumference evenly distributed on last base, driving gear drive spare and driven gear drive spare all include gear and lower gear, go up gear and lower gear and pass through the transmission shaft and connect.

Furthermore, six racks are arranged in the positioning and clamping mechanism, the structure and the size of each rack are the same, and the racks are uniformly distributed on the upper base along the circumferential direction; the number of the positioning clamping jaws is six, the six positioning clamping jaws are uniformly distributed along the circumferential direction of the rotary supporting gear, and each positioning clamping jaw is arranged along the radial direction of the rotary supporting gear; the end parts of the movable clamping jaw blocks of the six positioning clamping jaws are provided with clamping openings.

Further, the jaw base of the positioning jaw is fixed on the rack through a screw.

Furthermore, the number of the pressing mechanisms is three, and the pressing mechanisms are evenly distributed along the central circumference of the support platform.

Furthermore, the underframe is of a frame structure, the upper part of the underframe is provided with a lower base, the upper base is arranged above the lower base through upright posts at four corners, and an installation space of the rotary support gear is formed between the upper base and the lower base; the supporting platform is arranged above the upper base through a plurality of stand columns, and an installation space of the positioning clamping mechanism is formed between the supporting platform and the upper base.

Furthermore, three centering claws and three pressing mechanisms of the centering mechanism are alternately arranged on the support platform along the circumferential direction and are uniformly arranged along the circumferential direction of the center of the support platform.

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

when the centering mechanism is used for clamping a large-scale bearing ring workpiece, the centering mechanism can quickly realize centering and preliminary clamping on the bearing ring workpiece; six positioning clamping jaws of the positioning and clamping mechanism are uniformly clamped in six directions of a workpiece, and the workpiece is uniformly stressed by adopting a mode of synchronous motion and single-step fine adjustment, so that the deformation or damage of the bearing ring workpiece due to nonuniform stress is avoided, and the positioning and clamping of the workpiece in the horizontal direction are realized; the three pressing clamping jaws of the pressing mechanism realize final pressing and fixing of the workpiece in the vertical direction, the accurate position of the workpiece during machining can be effectively guaranteed through actions from the centering mechanism to the positioning clamping mechanism and then to the pressing mechanism, and the clamping precision is obviously improved through the application of the servo motor.

Drawings

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

Fig. 2 is a schematic view of the centering mechanism of the present invention.

FIG. 3 is a schematic view of a positioning and clamping mechanism of the present invention.

Fig. 4 is a schematic view of the positioning jaw of the present invention.

Fig. 5 is a schematic view of the pressing mechanism of the present invention.

In the figure: 1-a chassis, 2-a lower base, 3-an upper base, 4-a support table, 5-a reduction motor, 6-a driving gear transmission piece, 7-a rotary support gear, 8-a driven gear transmission piece, 9-a rack, 10-a movable jaw block, 11-a jaw base, 12-a spiral guide rod, 13-a fine adjustment motor, 14-a first servo motor, 15-a fixed bottom plate, 16-a driving bevel gear, 17-a driven bevel gear, 18-a first transmission screw, 19-a movable sliding seat, 20-a centering jaw, 21-a first guide rail pair sliding block, 22-a first guide rail pair linear guide rail, 23-a fixed support frame, 24-a second servo motor, 25-a second transmission screw, 26-a pressing jaw, 27-a second guide rail pair sliding block, 28-second guide rail pair linear guide rail, 29-bearing ring workpiece.

Detailed Description

The invention is further described below with reference to the accompanying drawings. As shown in fig. 1 to 5, a rapid self-centering clamping device for a large-scale bearing ring workpiece comprises an underframe 1, a support table 4, a centering mechanism, a positioning and clamping mechanism and a pressing mechanism;

the centering mechanism comprises a driving bevel gear 16, three driven bevel gears 17, a first servo motor 14, a first transmission lead screw 18, a movable sliding seat 19, centering claws 20, a first guide rail pair sliding block 21 and a first guide rail pair linear guide rail 22; the driving bevel gear 16 is arranged at the center of the fixed bottom plate 15, the shaft end of the driving bevel gear 16 faces downwards and is connected with the first servo motor 14, and the tooth end of the driving bevel gear 16 is meshed with the tooth ends of the three driven bevel gears 17; the shaft end of the driven bevel gear 17 is connected with a first transmission screw 18, a movable sliding seat 19 is arranged on the first transmission screw 18, the upper part of the movable sliding seat 19 is connected with a centering claw 20, and the lower part of the movable sliding seat is fixedly connected with a first guide rail pair sliding block 21; the first guide rail pair sliding block 21 is connected in a sliding manner along a first guide rail pair linear guide rail 22, and the first guide rail pair linear guide rail 22 is installed on the fixed bottom plate 15; the first servo motor 14 drives three driven bevel gears 17 through a driving bevel gear 16, and the three driven bevel gears 17 drive respective centering jaws 20 to realize centering or separating motion through respective first transmission screw rods 18 and the driven bevel gears 17; the fixed bottom plate 15 is closely attached to the upper base 3;

the positioning and clamping mechanism comprises an upper base 3, a lower base 2, a rotary supporting gear 7, driving gear transmission pieces 6, driven gear transmission pieces 8, positioning clamping jaws and a fine adjustment motor 13, wherein the rotary supporting gear 7 is arranged between the upper base 3 and the lower base 2, the rotary supporting gear 7 is simultaneously meshed with a lower gear of one driving gear transmission piece 6 and lower gears of five driven gear transmission pieces 8, the lower shaft end of the driving gear transmission piece 6 is connected with a speed reduction motor 5, an upper gear of the driving gear transmission piece 6 is meshed with a rack 9, an upper gear of each driven gear transmission piece 8 is meshed with a corresponding rack 9, and the positioning clamping jaws are fixedly installed on the racks 9; the reduction motor 5 drives the driving gear transmission piece 6 to rotate, the driving gear transmission piece 6 drives the five driven gear transmission pieces 8 to rotate through the rotary supporting gear 7, and the driving gear transmission piece 6 and the five driven gear transmission pieces 8 drive the six positioning clamping jaws to synchronously stretch and retract through the racks 9;

the positioning clamping jaw comprises a movable clamping jaw block 10, a clamping jaw base 11, a spiral guide rod 12 and a fine adjustment motor 13, wherein the movable clamping jaw block 10 is installed on the clamping jaw base 11, the outer end of the movable clamping jaw block 10 is connected with the fine adjustment motor 13 through the spiral guide rod 12, and the fine adjustment motor 13 drives the movable clamping jaw block 10 to perform telescopic movement through the spiral guide rod 12;

the pressing mechanism comprises a fixed support frame 23, a second transmission screw 25, a second servo motor 24, a pressing clamping jaw 26, a second guide rail pair sliding block 27 and a second guide rail pair linear guide rail 28, the fixed support frame 23 is fixedly installed on the movable clamping jaw block 10, the second servo motor 24 is fixedly installed on the upper portion of the fixed support frame 23, the second guide rail pair linear guide rail 28 is fixedly installed on the inner side of the fixed support frame 23, the upper end of the second transmission screw 25 is connected with the output end of the second servo motor 24, the pressing clamping jaw 26 is installed on the second transmission screw 25, the pressing clamping jaw 26 is fixedly connected with the second guide rail pair sliding block 27, and the second guide rail pair sliding block 27 is in sliding connection with the second guide rail pair linear guide rail 28; the second servomotor 24 drives the pressing jaw 26 to move up and down through the second transmission screw 25.

Further, the size of the driving bevel gear 16 is the same as that of the three driven bevel gears 17, the three driven bevel gears 17 are uniformly distributed along the circumferential direction of the driving bevel gear 16, the three centering jaws 20 are uniformly distributed along the circumferential direction, and each centering jaw 20 is radially arranged.

Further, six gear drive spares are total to a driving gear drive spare 6 and five driven gear drive spares 8 in the location fixture along circumference evenly distributed on last base 3, driving gear drive spare 6 and driven gear drive spare 8 all include gear and lower gear, go up gear and lower gear and pass through the transmission shaft and connect.

Furthermore, six racks 9 are arranged in the positioning and clamping mechanism, and each rack 9 has the same structure and size and is uniformly distributed on the upper base 3 along the circumferential direction; six positioning clamping jaws are uniformly distributed along the circumferential direction of the rotary supporting gear 7, and each positioning clamping jaw is arranged along the radial direction of the rotary supporting gear 7; the end parts of the movable jaw blocks 10 of the six positioning jaws are provided with clamping openings.

Further, a jaw base 11 of the positioning jaw is fixed to the rack 9 by a screw.

Further, the number of the pressing mechanisms is three, and the pressing mechanisms are evenly distributed along the central circumference of the support table 4.

Furthermore, the underframe 1 is of a frame structure, the upper part of the underframe 1 is provided with the lower base 2, the upper base 3 is arranged above the lower base 2 through four-corner upright posts, and an installation space of the rotary support gear 7 is formed between the upper base 3 and the lower base 2; the supporting platform 4 is arranged above the upper base 3 through a plurality of upright posts, and an installation space of the positioning clamping mechanism is formed between the supporting platform 4 and the upper base 3.

Further, the three centering jaws 20 and the three pressing mechanisms of the centering mechanism are alternately arranged on the support platform 4 along the circumferential direction, and are uniformly arranged along the central circumferential direction of the support platform 4.

The working principle of the invention is as follows:

when a bearing ring workpiece 29 is placed on the support table 4, firstly, when the first servo motor 14 of the centering mechanism is started in a forward rotation mode, the driving bevel gear 16 rotates under the driving of the torque of the first servo motor 14, the driving bevel gear 16 simultaneously drives the three driven bevel gears 17 to rotate, the three driven bevel gears 17 drive the corresponding first transmission lead screws 18 to rotate, and the rotation of the first transmission lead screws 18 enables centering claws 20 connected to the movable slide carriage 19 to be guided by the first guide rail pair sliding blocks 21 to clamp centering on the first guide rail pair linear guide rails 22; then, when the reducing motor 5 of the positioning and clamping mechanism is started in a forward rotation manner, the driving gear transmission member 6 rotates under the torque drive of the reducing motor 5, the lower gear of the driving gear transmission member 6 drives the slewing bearing gear 7 to rotate, the slewing bearing gear 7 simultaneously drives the lower gears of the five driven gear transmission members engaged therewith to rotate, the lower gears of one driving gear transmission member 6 and five driven gear transmission members 8 simultaneously drive the upper gears of one driving gear transmission member 6 and five driven gear transmission members 8 to rotate, the upper gears of one driving gear transmission member 6 and five driven gear transmission members 8 simultaneously drive six racks 9 engaged therewith to simultaneously move, the simultaneous movement of the racks 9 drives the positioning jaws fixedly connected thereon to simultaneously realize horizontal positioning and clamping on the bearing ring workpiece 29, and if the bearing ring workpiece 29 is still clamped horizontally, the fine adjustment motor 13 is started by forward rotation, the spiral guide rod 12 drives the clamping jaws to move 10 pieces to perform fine adjustment on the bearing ring workpiece 29 under the torque rotation of the fine adjustment motor 13 until effective horizontal positioning and clamping are realized, and the first servo motor 14 of the centering mechanism is started by reverse rotation after the horizontal positioning and clamping, so that the centering clamping jaws 20 of the separating centering mechanism are released; finally, the second servo motor 24 of the pressing mechanism is started by positive rotation, and the second transmission screw 25 is driven by the torque of the second servo motor 24 to drive the pressing clamping jaw 26 on the second transmission screw 25 to press downwards along the second guide rail pair linear guide rail 28 under the guidance of the second guide rail pair sliding block 27 until final effective pressing and fixing are realized in the vertical direction of the bearing ring workpiece 29. Furthermore, the clamping force can be adjusted by controlling the first servomotor 14, the second servomotor 24 and the trimming motor 13. Thus, a complete set of centering and clamping actions of the present invention is completed. Conversely, the same can achieve a clamping release separation of the bearing ring workpiece.

The present invention is not limited to the embodiment, and any equivalent idea or change within the technical scope of the present invention is to be regarded as the protection scope of the present invention.