CN216607932U

CN216607932U - Brake disc bottom bolt tightening equipment

Info

Publication number: CN216607932U
Application number: CN202220935918.5U
Authority: CN
Inventors: 程卫东
Original assignee: Tianjin Yunqi Automation Technology Co ltd
Current assignee: Tianjin Yunqi Automation Technology Co ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-05-27
Anticipated expiration: 2032-04-22

Abstract

The utility model provides brake disc bottom bolt tightening equipment which comprises a brake disc placing part, wherein a workpiece is placed on the brake disc placing part, a clamping device is arranged at the upper part of the workpiece, a through hole is formed in the middle of the brake disc placing part, a lifting rotating device is arranged at the bottom of the through hole, and a tightening device is arranged at the lower part of the workpiece; the upper part of the workpiece is also provided with a first detection device and a second detection device; the automobile hub bearing is placed on the brake disc to be used as an integral workpiece and placed on the brake disc placing part, the automobile hub bearing is connected with the brake disc through the tightening device, and the workpiece does not need to be turned over; the novel connecting device is simple in structure and convenient to use, and the workpiece does not need to be turned over when being connected and locked, so that the labor intensity is reduced, and the working efficiency is improved.

Description

Brake disc bottom bolt tightening equipment

Technical Field

The application relates to the technical field of automobiles, in particular to brake disc bottom bolt tightening equipment.

Background

Since the utility model, automobiles are gradually popularized and become a necessary travel tool for families; the brake disc is as the important part of car, the security of the car will be directly influenced to the quality of its performance, add man-hour to car brake disc, need to screw up brake disc and automobile wheel hub bearing through the screw, among the prior art, generally adopt artificial mode to counterpoint screw and nut, then through the operation mode of air wrench or manual screw up screw nut, and at the in-process of installation, need turn-over just can realize the locking of screw and nut, this kind of operation mode process is loaded down with trivial details, work load is big, cause operator intensity of labour big, the low scheduling problem of production efficiency.

Therefore, a new technical solution is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides brake disc bottom bolt tightening equipment which comprises a brake disc placing part, wherein a workpiece is placed on the brake disc placing part, the workpiece comprises a brake disc and an automobile hub bearing, a clamping device for clamping the automobile hub bearing is arranged at the upper part of the automobile hub bearing, a through hole is formed in the middle of the brake disc placing part, a lifting and rotating device is arranged at the lower part of the through hole, and the lifting and rotating device is used for jacking the brake disc and the automobile hub bearing and integrally rotating the brake disc and the automobile hub bearing; a tightening device is arranged at the lower part of the workpiece and comprises a transverse moving device, a longitudinal moving device is arranged on the transverse moving device, and a tightening gun is arranged on the longitudinal moving device; and the upper part of the workpiece is also provided with a first detection device for detecting the hole site of the brake disc and a second detection device for detecting the hole site of the bearing of the automobile hub.

The clamping device comprises a servo motor, the servo motor is connected with a ball screw, a linear bearing of the ball screw is connected with a supporting plate, the supporting plate is connected with a sliding block, the sliding block is matched with a sliding rail, the sliding rail is fixed on a fixing support, a support is arranged on the supporting plate, a mounting plate is arranged at the top of the support, a transmission device is arranged on the mounting plate, and the transmission device is respectively connected with a rotary power source and a pneumatic clamping jaw.

The transmission device comprises a driving wheel and a driven wheel, a transmission belt is arranged on the outer side of the driven wheel and the outer side of the driven wheel, the driving wheel is connected with a rotary power source, and the driven wheel is connected with the pneumatic clamping jaw.

The first detection device and the second detection device are connected with a detection device fixing plate through mounting brackets, and the detection device fixing plate is connected with the fixing brackets; the first detection device is used for detecting a brake disc workpiece, and the second detection device is used for detecting an automobile hub bearing workpiece.

The brake disc bottom bolt tightening equipment further comprises a third detection device, the third detection device passes through the first mounting support and is connected with a first detection device fixing support, the first detection device fixing support is connected with a fixed plate, and a supporting support is arranged at the bottom of the fixed plate.

The lifting rotating device comprises a lifting power source, the lifting power source is connected with a first ball screw, a first linear bearing of the first ball screw is connected with a lifting plate through a connecting piece, the lifting plate is connected with a linear sliding block, and the linear sliding block is matched with a linear sliding rail; a first rotary power source is fixed on the lifting plate and connected with the supporting piece.

The transverse moving device comprises a support frame, a transverse sliding rail is arranged on the support frame, a transverse sliding block matched with the transverse sliding rail is arranged on the transverse sliding rail, a moving plate is connected to the transverse sliding block, the moving plate is connected with a transverse ball screw, the transverse ball screw is connected with a transverse moving power source, and the transverse moving power source is connected with the top of the support frame through a transverse support bracket.

The longitudinal moving device comprises a longitudinal power source fixed on the moving plate, a cylinder and a longitudinal sliding block, wherein the top of the longitudinal power source is connected with the longitudinal sliding block, the longitudinal sliding block is matched with the longitudinal sliding rail, the top of the longitudinal power source is connected with a transverse plate, a servo motor is arranged on the transverse plate, and the servo motor is connected with the tightening gun.

The lower part of the workpiece is also provided with a positioning device, the positioning device comprises a positioning pin, and the positioning pin is connected with the pushing device.

In this application, place the automobile wheel hub bearing on the brake disc as holistic work piece earlier, then place the brake disc with the work piece and place the portion, the lifting and rotating device starts, break away from the brake disc portion of placing with the work piece jack-up earlier, and it is rotatory, brake disc and automobile wheel hub bearing follow-up, detection device detects the work piece after, press from both sides and get the device and descend and mention and rotate automobile wheel hub bearing, the lifting and rotating device drives the brake disc rotatory, when detection device detects the hole site of automobile wheel hub bearing, stop the rotation, when detection device detects the hole site of brake disc, the brake disc stall, then the clamping jaw descends and places the automobile wheel hub bearing on the brake disc, the tightening device starts, be connected automobile wheel hub bearing and brake disc, realize locking between the two.

The novel connecting device is simple in structure and convenient to use, and the workpiece does not need to be turned over when being connected and locked, so that the labor intensity is reduced, and the working efficiency is improved.

Drawings

FIG. 1 is a schematic structural diagram of the present application;

fig. 2 is a schematic structural view of the gripping device of the present application;

FIG. 3 is a schematic view of an angle one of the lift rotating apparatus of the present application;

FIG. 4 is a schematic view of an angle two of the lift rotating apparatus of the present application;

FIG. 5 is a schematic view of an angle one of the tightening devices of the present application;

FIG. 6 is a schematic view of angle two of the tightening device of the present application;

FIG. 7 is a schematic view of angle three of the tightening device of the present application;

FIG. 8 is a schematic view of a first installation position angle of a first detection device, a second detection device and a third detection device according to the present application;

FIG. 9 is a schematic view of a first detection device, a second detection device and a third detection device of the present application at a second installation position angle;

FIG. 10 is a schematic view of a first detection device, a second detection device and a third detection device of the present application;

fig. 11 is a schematic structural view of a brake disc placing portion of the present application;

FIG. 12 is a schematic view of a workpiece structure according to the present application;

fig. 13 is a partially enlarged view of a portion a in fig. 8;

fig. 14 is a partially enlarged view of a portion B in fig. 6;

reference numerals:

1. brake disc placing part 2, workpiece 3, brake disc 4 and automobile hub bearing

5. Mounting hole 6, clamping device 7, through hole 8 and lifting rotating device

9. Tightening device 10, first detection device 11 and second detection device

12. Mounting bracket 13, detection device fixing plate 14 and fixing bracket

15. Detection device III 16, mounting bracket I17 and detection device fixing bracket

18. Fixed plate 19, support bracket 20, servo motor 21, ball screw

22. Supporting plate 23, sliding block 24, sliding rail 26, bracket 27 and mounting plate

28. Rotary power source 29, pneumatic clamping jaw 30, driving wheel 31 and driven wheel

32. Transmission belt 33, lifting power source 34, first ball screw 35 and lifting plate

36. Linear slide block 37, linear slide rail 38, first rotary power source 39 and support piece

40. Tightening gun 41, support frame 42, transverse slide rail 43 and transverse slide block

44. Moving plate 45, lateral ball screw 46, lateral moving power source

47. Transverse support bracket 48, longitudinal power source 49 and longitudinal slide block

50. Longitudinal slide rail 51, transverse plate 52, first servo motor 53 and positioning pin

54. Pushing device 55, support hole 56, support shaft 57, support shoulder.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be noted that the specific embodiments described herein are only for illustrating and explaining the present invention and do not limit the present invention.

The first embodiment is as follows:

the embodiment provides a brake disc bottom bolt tightening device which comprises a brake disc placing part 1, wherein a workpiece 2 is placed on the brake disc placing part 1, the brake disc placing part 1 is set according to the shape of the workpiece, details are not repeated, the workpiece 2 comprises a brake disc 3 and an automobile hub bearing 4, the automobile hub bearing 4 is placed on the brake disc 3, the brake disc 3 and the automobile hub bearing 4 are connected through the device, mounting holes 5 are formed in positions corresponding to the brake disc 3 and the automobile hub bearing 4, and when the brake disc 3 and the automobile hub bearing 4 are overlapped together, connection is completed; the brake disc 3 and the automobile hub bearing 4 are both in the prior art, and the workpiece 2 is not improved in the application, so that the detailed description is omitted; the clamping device 6 is arranged at the upper part of the workpiece 2 and used for clamping the automobile hub bearing 4, so that the automobile hub bearing 4 can rotate independently, and the mounting hole position of the automobile hub bearing 4 is coincided with the mounting hole position of the brake disc 3; a through hole 7 is formed in the middle of the brake disc placing part 1, a lifting and rotating device 8 is arranged at the bottom of the through hole 7, the lifting and rotating device 8 is used for lifting the workpiece 2, so that the workpiece 2 is separated from the brake disc placing part 1, the clamping device 6 clamps the automobile hub bearing 4, the brake disc 3 and the automobile hub bearing 4 are respectively rotated, hole position adjustment between the brake disc 3 and the automobile hub bearing 4 is more convenient, and connection between the brake disc 3 and the automobile hub bearing is realized; the lower part of the workpiece 2 is provided with a tightening device 9, when the hole positions of the brake disc 3 and the automobile hub bearing 4 correspond, the tightening device 9 is started, and the connection between the brake disc 3 and the automobile hub bearing 4 is realized through screws and the like; the upper part of the workpiece 2 is also provided with a first detection device 10 and a second detection device 11 respectively, the first detection device 10 and the second detection device 11 are connected with a first detection device fixing plate 13 through a mounting bracket 12, and the first detection device fixing plate 13 is connected with a second detection device fixing plate 14; the first detection device 10 is used for detecting a brake disc 3 workpiece, and the second detection device 11 is used for detecting an automobile hub bearing 4 workpiece; the first detection device 10 and the second detection device 11 may adopt a laser sensor in the prior art, and a straight line connecting the first detection device 10 and the second detection device 11 shown in fig. 1, 8, 9 and 10 is a working state of simulated laser, and does not belong to the structural characteristics of the first detection device 10 and the second detection device 11; detection device 10 is used for detecting the hole site of brake disc 3, preferably, in order to improve the degree of accuracy, detection device 10 is two at least, when two detection device 10 all detected the hole site, show that brake disc 3 has rotated to suitable position, detection device two 11 are used for detecting the hole site of automobile wheel hub bearing 4, when the hole site of brake disc 3 and automobile wheel hub bearing 4 all detected, brake disc 3 and automobile wheel hub bearing 4 all stall, press from both sides and get device 6 and place brake disc 3 with automobile wheel hub bearing 4 on, it starts to tighten device 9, realize that the connection of the two is fixed.

Preferably, the brake disc bottom bolt tightening equipment further comprises a third detection device 15, the third detection device 15 adopts a laser sensor, the distance between the mounting holes 5 is measured by arranging two laser sensors, when the distance is the same as the diameter of the brake disc 3 to be assembled, the workpiece is proved to be correct, and if the difference is far from the diameter of the brake disc 3 to be assembled, the model of the brake disc 3 is proved to be placed wrongly; the third detection device 15 is connected with a first detection device fixing support 17 through a first mounting support 16, the first detection device fixing support 17 is connected with a fixing plate 18, and a support 19 is arranged at the bottom of the fixing plate 18.

Example two:

the present embodiment describes the gripping device 6, specifically:

the clamping device 6 comprises a servo motor 20, the servo motor 20 is a servo motor in the prior art, the specific model is not limited, the servo motor 20 is connected with a ball screw 21, a linear bearing of the ball screw 21 is connected with a support plate 22, the support plate 22 is connected with a sliding block 23, the sliding block 23 is matched with a sliding rail 24, the sliding rail 24 is fixed on a fixed support 14, a support 26 is arranged on the support plate 22, an installation plate 27 is arranged at the top of the support 26, a transmission device is arranged on the installation plate 27, and the transmission device is respectively connected with a rotary power source 28 and a pneumatic clamping jaw 29; the rotary power source 28 can be a servo motor in the prior art, the specific model is not limited, and similarly, the pneumatic clamping jaw 29 is a pneumatic clamping jaw in the prior art, and the pneumatic clamping jaw is not improved in any way, and the specific model is not limited in any way.

More specifically, the transmission device comprises a driving wheel 30 and a driven wheel 31, a transmission belt 32 is arranged on the outer side of the driving wheel 30 and the driven wheel 31, the driving wheel 30 is connected with the rotary power source 28, and the driven wheel 31 is connected with the pneumatic clamping jaw 29.

Servo motor 20 starts, drive ball 21 and rotate, ball 21's linear bearing reciprocates along ball 21, thereby drive backup pad 22 and reciprocate along slide rail 24, adjust pneumatic clamping jaw 29's height, adjust to suitable high back, rotary power source 28 starts, drive action wheel 30 rotates, through drive belt 32, drive pneumatic clamping jaw 29 from driving wheel 31 and rotate, pneumatic clamping jaw 29 realizes pressing from both sides the clamp of work piece automobile wheel hub bearing 4 and loosens.

Example three:

the present embodiment describes the lifting and rotating device 8, specifically:

the lifting and rotating device 8 comprises a lifting power source 33, the lifting power source 33 can be a servo motor in the prior art, the specific model is not limited, the lifting power source 33 is connected with a first ball screw 34, a first linear bearing of the first ball screw 34 is connected with a lifting plate 35 through a connecting piece, the lifting plate 35 is connected with a linear sliding block 36, and the linear sliding block 36 is matched with a linear sliding rail 37; a first rotary power source 38 is fixed on the lifting plate 35, the first rotary power source 38 can be a servo motor in the prior art, the first rotary power source 38 is connected with a support member 39, and the support member is used for supporting the workpiece 2; support hole 55 has been seted up at the middle part of work piece, and support piece 39 includes back shaft 56, and the lower part of back shaft 56 is equipped with support circular bead 57, and back shaft 56 and support hole 55 cooperation support circular bead 57 and brake disc 3's bottom contact realize the jack-up to work piece 2, realize the jack-up of brake disc 3, automobile wheel hub bearing 4 promptly to start through a rotary power source 38, realize the holistic rotation of brake disc 3, automobile wheel hub bearing 4.

The lifting power source 33 is started to drive the first ball screw 34 to rotate, the first linear bearing moves up and down along the first ball screw 34, so that the lifting plate 35 is driven to move up and down along the linear sliding rail 37, the height of the supporting piece 39 is adjusted, the supporting piece 39 jacks up the workpiece 2 to enable the workpiece 2 to be separated from the brake disc placing part 1, and the first rotary power source 38 is started to drive the supporting piece 39 to rotate, so that the workpiece 2 is driven to rotate.

Example four:

the present embodiment describes the tightening device 9, specifically:

tightening device 9 includes the lateral shifting device, be equipped with the longitudinal movement device on the lateral shifting device, be equipped with on the longitudinal movement device and tighten rifle 40, it can to tighten rifle 40 and adopt the tightening rifle among the prior art, this application does not do any improvement to it, specific model does not do the injecing, tightening device 9 is connected with the automatic feed device among the prior art, a fastener such as screw, this application does not improve it, do not do the repeated description here, the technical staff select according to prior art can, tightening rifle 40 is along the lateral shifting device, the longitudinal movement device carries out the regulation of position, thereby better realization automobile wheel hub bearing 4 and brake disc 3's connection.

Preferably, the lateral shifting device includes a support frame 41, a lateral sliding rail 42 is provided on the support frame 41, the lateral sliding rail 42 and the support frame 41 can be fixed by common fixing methods in the prior art such as welding, bonding, and screw connection, a lateral sliding block 43 matched with the lateral sliding rail 42 is provided on the lateral sliding rail 42, a moving plate 44 is connected to the lateral sliding block 43, the moving plate 44 is connected to a lateral ball screw 45, the lateral ball screw 45 is connected to a lateral shifting power source 46, the lateral shifting power source 46 is a servo motor in the prior art, the specific model is not specifically limited, and the lateral shifting power source 46 is connected to the top of the support frame 41 through a lateral support bracket 47.

The longitudinal moving device comprises a longitudinal power source 48 fixed on the moving plate 44, the longitudinal power source 48 can be a cylinder in the prior art, the specific model is not limited, the fixing modes of the longitudinal power source 48 and the moving plate 44 are fixed in common fixing modes such as screws, bolts, bonding and welding, a longitudinal sliding block 49 is connected to the top of the longitudinal power source 48, the longitudinal sliding block 49 is matched with a longitudinal sliding rail 50, the top of the longitudinal power source 48 is connected with a transverse plate 51, a first servo motor 52 is arranged on the transverse plate 51, and the first servo motor 52 is connected with the tightening gun 40.

Lateral shifting power supply 46 starts, drive horizontal ball 45 and rotate, horizontal ball's linear bearing moves along horizontal ball 45, thereby drive movable plate 44 and remove along horizontal slide rail 42, adjust the horizontal position of screwing up the rifle, vertical power supply 48 starts, promote vertical slider 49 and remove along vertical slide rail 50, adjust the vertical position of screwing up rifle 40, servo motor 52 starts, it is rotatory to drive the rifle 40 of screwing up, realize the connection of 4 work pieces of automobile wheel hub bearing and 3 work pieces of brake disc through the screw, it is simple, and fast.

Example five:

in this embodiment, the hole site of the workpiece may be pre-positioned before the workpiece is screwed, specifically:

the lower part of the workpiece 2 is also provided with a positioning device, the positioning device comprises a positioning pin 53, the positioning pin 53 is connected with a pushing device 54, the pushing device 54 adopts a pushing cylinder in the prior art, and the specific model is not limited; firstly, an automobile hub bearing 4 is placed on a brake disc 3 as an integral workpiece, then the workpiece 2 is placed on a brake disc placing part 1, a lifting and rotating device 8 is started, the workpiece 2 is lifted up and separated from the brake disc placing part 1 and rotates, the brake disc 3 and the automobile hub bearing 4 follow up, after a detection device 10 detects the workpiece, a clamping device 6 descends to lift and rotate the automobile hub bearing 4, the lifting and rotating device 8 drives the brake disc 3 to rotate, when a detection device two 11 detects the hole site of the automobile hub bearing 4, the rotation is stopped, when the detection device one 10 detects the hole site of the brake disc 3, the brake disc 3 stops rotating, then a pneumatic clamping jaw 29 descends to place the automobile hub bearing 4 on the brake disc 3, a pushing device 54 is started to push a positioning pin 53 to move upwards to be positioned in mounting holes 5 of the automobile hub bearing 4 and the brake disc 3, the pre-positioning of the automobile hub bearing 4 and the brake disc 3 is achieved, and after the pre-positioning is completed, the screwing device 9 is started to screw the automobile hub bearing 4 and the brake disc 3.

In this application, press from both sides device 6, lifting and drop rotating device 8, screw up device 9, detection device 10, detection device two 11, detection device three 15, positioner and be connected with controlling means, controlling means adopts PLC controller or the singlechip among the prior art, and specific model does not do the injecing, realizes the full automatization of equipment.

More specifically, the control device is connected with the servo motor 20, the rotary power source 28 and the pneumatic clamping jaw 29 of the clamping device 6, and the control device controls starting and stopping of the servo motor 20, the rotary power source 28 and the pneumatic clamping jaw 29 to realize position adjustment of the pneumatic clamping jaw 29 and clamping of a workpiece on the automobile hub bearing 4; the control device is connected with the lifting power source 33 and the rotating power source 28 of the lifting rotating device 8 and is used for controlling the starting and stopping of the lifting power source 33 and the rotating power source 28 to realize the jacking, supporting and rotating of the workpiece 2; the control device is connected with the transverse moving power source 46, the longitudinal power source 48, the first servo motor 52 and the tightening gun 40 of the tightening device 9, and is used for controlling the starting and stopping of the transverse moving power source 46, the longitudinal power source 48, the first servo motor 52 and the tightening gun 40, adjusting the position of the tightening gun 40 and connecting the automobile hub bearing 4 with the brake disc 3.

The working principle of the utility model is as follows: firstly, an automobile hub bearing 4 is placed on a brake disc 3 to be taken as an integral workpiece 2, then the workpiece 2 is placed on a brake disc placing part 1, a lifting rotating device 8 is started to jack the workpiece 2 to be separated from the brake disc placing part 1 and rotate, the brake disc 3 and the automobile hub bearing 4 follow up, after a detection device I10 detects the workpiece 2, the clamping device 6 descends to lift and rotate the automobile hub bearing 4, the lifting and rotating device 8 drives the brake disc 3 to rotate, when the detection device II 11 detects the hole site of the automobile hub bearing 4, the rotation is stopped, when the first detection device 10 detects the hole position of the brake disc 3, the brake disc 3 stops rotating, then press from both sides and get device 6 and descend and place automobile wheel hub bearing 4 on brake disc 3, screw up device 9 and start, be connected automobile wheel hub bearing 4 and brake disc 3, realize the locking between the two.

The workpiece turnover device is simple in structure and convenient to use, turnover of the workpiece is not needed when the workpiece is connected and locked, labor intensity is reduced, and working efficiency is improved.

Here, it is to be noted that the functions, algorithms, methods, etc. related to the present invention are only conventional adaptive applications of the prior art; therefore, the improvement of the prior art is essentially the connection relationship between hardware, but not the functions, algorithms and methods, that is, the utility model relates to one point of functions, algorithms and methods, but does not include the improvements proposed by the functions, algorithms and methods; the description of the present invention in terms of functions, algorithms and methods is provided for better understanding of the present invention.

The structures and connection relations which are not described in detail in the utility model are the prior art, and the utility model is not described in detail herein; the connection between the above-mentioned components is preferably fixed by means of a screw, a bolt, an adhesive, or a welding integral molding, which is well known in the art.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are included in the scope of protection of the present invention.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present application will not be described separately.

In addition, any combination of the various embodiments of the present application can be made, and the present application should be considered as disclosed in the present application as long as the combination does not depart from the spirit of the present application.

Claims

1. The brake disc bottom bolt tightening equipment comprises a brake disc placing part (1) and is characterized in that a workpiece (2) is placed on the brake disc placing part (1), the workpiece (2) comprises a brake disc (3) and an automobile hub bearing (4), a clamping device (6) for clamping the automobile hub bearing (4) is arranged on the upper portion of the automobile hub bearing (4), a through hole (7) is formed in the middle of the brake disc placing part (1), a lifting rotating device (8) is arranged on the lower portion of the through hole (7), and the lifting rotating device (8) is used for jacking the brake disc (3) and the automobile hub bearing (4) and integrally rotating the brake disc and the automobile hub bearing; a tightening device (9) is arranged at the lower part of the workpiece (2), the tightening device (9) comprises a transverse moving device, a longitudinal moving device is arranged on the transverse moving device, and a tightening gun (40) is arranged on the longitudinal moving device; the upper portion of work piece (2) still is equipped with detection device one (10) that are used for detecting brake disc (3) hole site and is used for detecting detection device two (11) of automobile wheel hub bearing (4) hole site.

2. The brake disc bottom bolt tightening apparatus according to claim 1, wherein the clamping device (6) includes a servo motor (20), the servo motor (20) is connected with a ball screw (21), a linear bearing of the ball screw (21) is connected with a support plate (22), the support plate (22) is connected with a slider (23), the slider (23) is matched with a slide rail (24), the slide rail (24) is fixed on the fixed support (14), a support (26) is arranged on the support plate (22), a mounting plate (27) is arranged at the top of the support (26), and a transmission device is arranged on the mounting plate (27) and is respectively connected with a rotary power source (28) and a pneumatic clamping jaw (29).

3. Brake disc bottom bolt tightening device according to claim 2, characterized in that the transmission means comprises a driving wheel (30) and a driven wheel (31), the driving wheel (30) and the driven wheel (31) are provided with a transmission belt (32) on the outer sides thereof, the driving wheel (30) is connected with a rotary power source (28), and the driven wheel (31) is connected with a pneumatic clamping jaw (29).

4. Brake disc bottom bolt tightening apparatus according to claim 2, characterized in that the first detection device (10) and the second detection device (11) are connected to a detection device fixing plate (13) through a mounting bracket (12), and the detection device fixing plate (13) is connected to a fixing bracket (14).

5. The disc brake spider bolt tightening apparatus according to claim 1, further comprising a third detection device (15), wherein the third detection device (15) is connected with a first detection device fixing bracket (17) through a first mounting bracket (16), the third detection device fixing bracket (17) is connected with a fixing plate (18), and a support bracket (19) is arranged at the bottom of the fixing plate (18).

6. The brake disc bottom bolt tightening apparatus according to claim 1, wherein the lifting and rotating means includes a lifting and lowering power source (33), the lifting and lowering power source (33) is connected with a first ball screw (34), a first linear bearing of the first ball screw (34) is connected with a lifting plate (35) through a connecting member, the lifting plate (35) is connected with a linear slider (36), and the linear slider (36) is engaged with a linear slide rail (37); a first rotary power source (38) is fixed on the lifting plate (35), and the first rotary power source (38) is connected with the supporting piece (39).

7. The brake disc bottom bolt tightening apparatus according to claim 1, wherein the lateral movement device comprises a support frame (41), a lateral slide rail (42) is arranged on the support frame (41), a lateral slide block (43) matched with the lateral slide rail (42) is arranged on the lateral slide rail (42), a moving plate (44) is connected to the lateral slide block (43), the moving plate (44) is connected with a lateral ball screw (45), the lateral ball screw (45) is connected with a lateral movement power source (46), and the lateral movement power source (46) is connected with the top of the support frame (41) through a lateral support bracket (47); the longitudinal moving device comprises a longitudinal power source (48) fixed on the moving plate (44), the top of the longitudinal power source (48) is connected with a longitudinal sliding block (49), the longitudinal sliding block (49) is matched with a longitudinal sliding rail (50), the top of the longitudinal power source (48) is connected with a transverse plate (51), a first servo motor (52) is arranged on the transverse plate (51), and the first servo motor (52) is connected with the tightening gun (40).

8. Brake disc bottom bolt tightening device according to claim 5, characterized in that the lower part of the workpiece (2) is further provided with positioning means, which comprise positioning pins (53), which positioning pins (53) are connected with pushing means (54).

9. The brake disc bottom bolt tightening apparatus according to claim 8, wherein the clamping device (6), the lifting and rotating device (8), the tightening device (9), the first detection device (10), the second detection device (11), the third detection device (15) and the positioning device are respectively connected with the control device.