Brake caliper piston small assembly and dust cover press-fitting device

Abstract

The invention discloses a brake caliper piston small assembly and dust cover press-fitting device, and belongs to the brake caliper assembling technology, the brake caliper piston small assembly and dust cover press-fitting device comprises a rotating press-in shaft, a rotating mechanism, a press-in mechanism and a linkage control system, the rotating press-in shaft is vertically arranged, and the upper end of the rotating press-in shaft is provided with a piston positioning structure used for positioning a piston small assembly; the rotary press-in shaft drives the piston small assembly and the dust cover to be pressed together; the rotating mechanism comprises a servo motor and a transmission assembly, and the servo motor drives the rotating press-in shaft to rotate through the transmission assembly; the press-in mechanism comprises a servo electric cylinder, and the servo electric cylinder drives a rotary press-in shaft to linearly move up and down; the linkage control system is used for controlling the servo electric cylinder and the servo motor to achieve matching of rotation and up-and-down movement of the rotary press-in shaft, so that the piston small assembly can be stably and accurately pressed into the clamp body to be assembled together with the dust cover.

Description

[Technical field]

[0001] The invention belongs to the technical field of automobile parts, and in particular relates to a brake caliper assembly technology. [Background technology]

[0002] In the brake manufacturing process, the press-fitting process of the piston subassembly and the dust cover is one of the key steps. The prior art usually press-fits the dust cover onto the piston subassembly. For example, a Chinese invention patent with application publication number CN118003055A discloses a dust cover installation device for an EPB caliper piston, the technical solution of which includes a clamping mechanism; a moving mechanism; and a press-fitting mechanism; the clamping mechanism includes a clamping claw cylinder, which is connected to the moving mechanism; and a clamping claw, two of which are respectively connected to two fingers of the clamping claw cylinder; the press-fitting mechanism includes a connecting plate, which can move up and down; a connecting block, a plurality of connecting blocks are fixedly connected to the bottom of the connecting plate, and the plurality of connecting blocks are arranged around the vertical axis of the piston; a press-fitting claw, the top of the press-fitting claw is hinged on the connecting block; and a tension spring, a tension spring is provided between two adjacent press-fitting claws, and the two ends of the tension spring are respectively fixedly connected to the two press-fitting claws; by setting the clamping mechanism and the press-fitting mechanism, the clamping mechanism and the press-fitting mechanism can press-fit dust covers on pistons of different models.

[0003] The prior art technical solution of press-fitting the dust cover onto the piston subassembly cannot accurately control the pressing process, resulting in the inability to stably and accurately press-fit the piston subassembly and the dust cover. [Summary of the invention]

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a brake caliper piston subassembly and dust cover press-fitting device, so that the piston subassembly can be stably and accurately assembled with the caliper body equipped with the dust cover.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A brake caliper piston subassembly and a dust cover press-fit device, wherein the dust cover is installed into the caliper body of the brake caliper, and the caliper body is fixed above the press-fit device, and the press-fit device comprises:

[0007] A rotary press-in shaft, which is arranged vertically, and an upper end of which is provided with a piston positioning structure for positioning the piston subassembly, and the rotary press-in shaft drives the piston subassembly to be press-fitted with the dust cover;

[0008] A rotating mechanism, the rotating mechanism comprising a servo motor and a transmission assembly, the servo motor drives the rotary pressing shaft to rotate through the transmission assembly;

[0009] A pressing mechanism, the pressing mechanism comprising a servo electric cylinder, the servo electric cylinder drives the rotary pressing shaft to move linearly up and down;

[0010] The linkage control system is used to control the servo electric cylinder and the servo motor to realize the rotation and up and down movement of the rotary pressing shaft, so that the piston subassembly is assembled with the caliper body equipped with a dust cover.

[0011] Preferably, the servo motor is connected to a reducer, a transmission shaft is arranged parallel to the side of the rotary pressing shaft, the reducer drives the transmission shaft to rotate, and the transmission shaft is connected to the rotary pressing shaft through a transmission assembly.

[0012] Preferably, the transmission assembly is a synchronous belt transmission assembly, which includes an active synchronous pulley mounted on a transmission shaft, a driven synchronous pulley slidably nested on a rotating press-in shaft, and a synchronous belt connecting the active synchronous pulley and the driven synchronous pulley.

[0013] Preferably, a coupling and a torque sensor are provided between the output shaft of the reducer and the input end of the transmission shaft.

[0014] Preferably, the lower end of the rotary pressing shaft is mounted on a lifting plate, and the lifting plate is provided with a plane bearing for rotatably supporting the lower end of the rotary pressing shaft.

[0015] Preferably, the output end of the servo electric cylinder is connected to a lower joint, and a pressure sensor for detecting the pressing force of the piston is provided between the lower joint and the lifting plate.

[0016] Preferably, the press-fitting device further comprises a protective plate, and the protective plate is provided with a protective ring which is sleeved on the outer ring of the dust cover.

[0017] Preferably, the protective plate is connected to a height adjustment mechanism for adjusting the height of the protective plate.

[0018] Preferably, the press-fitting device further comprises a piston subassembly correction mechanism for correcting the position of the piston subassembly so that the piston subassembly is aligned with the dust cover.

[0019] Preferably, the piston subassembly correction mechanism includes an air claw.

[0020] The present invention adopts the above technical solution and has the following beneficial effects:

[0021] Compared with the prior art of pressing the dust cover onto the piston, the technical solution of the present invention is to assemble the piston subassembly onto the caliper body equipped with the dust cover. Before the piston subassembly and the caliper body are pressed together, the rectangular sealing ring and the piston dust cover are first installed into the caliper body, and then the caliper body is fixed. The press-fitting device is arranged under the caliper body, and the piston subassembly is pressed in from bottom to top by the press-fitting device.

[0022] The piston subassembly is positioned on the piston positioning structure at the upper end of the rotary pressing shaft. The rotary pressing shaft is driven up and down by the pressing mechanism and rotated by the rotating mechanism. In this way, the movement of the rotary pressing shaft can be controlled by precise control of the pressing mechanism and the rotating mechanism, thereby achieving a stable and precise pressing process of the piston subassembly.

[0023] The rotating mechanism uses a servo motor to drive the rotating pressing shaft to rotate, which is used to drive the initial positioning and rotating pressing of the piston subassembly; the pressing mechanism uses a servo electric cylinder to drive the rotating pressing shaft to move up and down linearly to achieve accurate pressing of the piston subassembly. Since the position accuracy of the servo motor and servo electric cylinder is very accurate, it is precisely controlled by the linkage control system, so that the piston subassembly can be stably and accurately pressed into the caliper body and assembled with the dust cover.

[0024] In addition, the dust cover protection mechanism can adjust different protection heights according to different products, and the protection plate has a limited position effect, which increases the success rate of blowing up the dust cover. The piston subassembly correction mechanism corrects the position of the piston subassembly to prevent the piston subassembly from being in the wrong position and unable to be pressed in.

[0025] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Brief Description of the Drawings

[0026] The invention will be further described below with reference to the accompanying drawings:

[0027] Figure 1 A schematic diagram of the overall structure of a brake caliper piston subassembly and a dust cover press-fitting device provided in this embodiment;

[0028] Figure 2 It is a side view of the piston subassembly and the dust cover press-fit device;

[0029] Figure 3 It is a front view of the piston subassembly and the dust cover press-fit device;

[0030] Figure 4 for Figure 3 Middle AA section view;

[0031] Figure 5 for Figure 4 The enlarged structural diagram at position I in the middle;

[0032] Figure 6 It is a schematic diagram of the transmission connection between the rotating mechanism and the rotating pressing shaft;

[0033] Figure 7 for Figure 6 The enlarged structural diagram at position I in the middle;

[0034] Figure 8A side view of the transmission connection between the rotating mechanism and the rotating press-in shaft;

[0035] Fig. 9 for Figure 8 Middle AA section view;

[0036] Fig.10 It is a schematic diagram of the combined structure of the piston subassembly and the dust cover;

[0037] Fig.11 It is a schematic diagram of the overall structure of the dust cover protection mechanism and the piston sub-assembly correction mechanism;

[0038] Fig.12 It is a side view of the dust cover protection mechanism and the piston sub-assembly correction mechanism;

[0039] Fig.13 for Fig.12 The enlarged structural diagram at position I in the middle;

[0040] Fig.14 It is a partial structural diagram of the dust cover protection mechanism and the piston subassembly correction mechanism;

[0041] Fig.15 for Fig.14 The enlarged structural diagram at II in the middle;

[0042] Fig.16 It is a structural schematic diagram of the piston small assembly correction mechanism;

[0043] Reference numerals: plug subassembly 100, piston 101, screw and screw sleeve subassembly 102, dust cover 103, rotary pressing shaft 1, piston positioning structure 11, driven synchronous pulley 12, pressing mechanism 2, fixed bracket 20, bottom plate 201, top plate 202, support rod 203, servo electric cylinder 21, output end 211, lifting plate 22, lower joint 23, plane bearing 24, pressure sensor 25, upper joint 26, rotating mechanism 3, servo motor 31, reducer 32, torque sensor 33, coupling 34, transmission shaft 35, active synchronous pulley 36, tensioning pulley 37, dust cover protection mechanism 4, protective plate 41, protective ring 411, height adjustment cylinder 42, lower lifting block 43, lifting rod 44, limit seat 45, limit screw 46, upper lifting block 47, piston subassembly correction mechanism 5, claw 51, transverse movement mechanism 6, transverse movement cylinder 61, transverse guide rail 62, transverse movement slider 63. [Specific implementation method]

[0044] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0045] Those skilled in the art will appreciate that, in the absence of conflict, the features in the following embodiments and implementations may be combined with each other.

[0046] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. For example, the words "upper", "lower", "left", "right", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] Reference Figures 1 to 16 As shown, this embodiment provides a brake caliper piston subassembly and dust cover press-fitting device. The corresponding workstation on the brake caliper assembly line is the piston assembly workstation of the automobile rear brake caliper. The accessories related to this workstation include a caliper body, a rectangular sealing ring, a piston dust cover, a piston subassembly (piston + screw and sleeve subassembly), a retaining spring, etc. The figure shows a piston subassembly 100 (piston 101 + screw and sleeve subassembly 102) and a piston dust cover 103. The dust cover is made of rubber. In order to press the piston subassembly together with the dust cover after the movement, the dust cover needs to be blown to a certain extent before the piston subassembly can be pressed into the caliper body, otherwise the piston dust cover will be cut when pressed in. During assembly, it is necessary to manually install the rectangular sealing ring and the piston dust cover into the caliper body first, then fix the caliper body, and press the piston subassembly 100 from bottom to top. Therefore, the press-fitting device is arranged below the caliper body, specifically including:

[0049] The rotary press-in shaft 1 is arranged vertically, and the upper end of the rotary press-in shaft 1 is provided with a piston positioning structure 11 for positioning the piston subassembly, and the rotary press-in shaft 1 drives the piston subassembly 100 to be pressed together with the dust cover 103. The piston positioning structure 11 can adopt an existing design and then be installed on the upper end of the rotary press-in shaft 1.

[0050] The rotating mechanism 3 includes a servo motor 31 and a transmission assembly. The servo motor 31 drives the rotary pressing shaft 1 to rotate through the transmission assembly.

[0051] The pressing mechanism 2 includes a servo electric cylinder 21, and the servo electric cylinder 21 drives the rotary pressing shaft 1 to move linearly up and down.

[0052] The linkage control system is used to control the servo electric cylinder 21 and the servo motor 31 to realize the rotation and up and down movement of the rotary pressing shaft 1, so that the piston subassembly is assembled with the caliper body equipped with a dust cover.

[0053] Compared with the prior art of pressing the dust cover onto the piston, the technical solution of the present invention is to assemble the piston subassembly onto the caliper body equipped with the dust cover. Before the piston subassembly and the caliper body are pressed together, the rectangular sealing ring and the piston dust cover are first installed into the caliper body, and then the caliper body is fixed. The press-fitting device is arranged under the caliper body, and the piston subassembly is pressed in from bottom to top by the press-fitting device.

[0054] The piston subassembly is positioned on the piston positioning structure at the upper end of the rotary pressing shaft. The rotary pressing shaft is driven up and down by the pressing mechanism and rotated by the rotating mechanism. In this way, the movement of the rotary pressing shaft can be controlled by precise control of the pressing mechanism and the rotating mechanism, thereby achieving a stable and precise pressing process of the piston subassembly.

[0055] The rotating mechanism uses a servo motor to drive the rotating pressing shaft to rotate, which is used to drive the initial positioning and rotating pressing of the piston subassembly; the pressing mechanism uses a servo electric cylinder to drive the rotating pressing shaft to move up and down linearly to achieve accurate pressing of the piston subassembly. Since the position accuracy of the servo motor and servo electric cylinder is very accurate, it is precisely controlled by the linkage control system, so that the piston subassembly can be stably and accurately pressed into the caliper body and assembled with the dust cover.

[0056] In this embodiment, the servo motor 31 is connected to a reducer 32, and a transmission shaft 35 is arranged parallel to the side of the rotary press-in shaft 1. The reducer 32 drives the transmission shaft 35 to rotate, and the transmission shaft 35 is connected to the rotary press-in shaft 1 through a transmission assembly. The transmission assembly is a synchronous belt transmission assembly, which includes an active synchronous pulley 36 installed on the transmission shaft 35, a driven synchronous pulley 12 slidably nested on the rotary press-in shaft 1, and a synchronous belt (not shown in the figure) connecting the active synchronous pulley 36 and the driven synchronous pulley 12. A spline matching structure can be adopted between the rotary press-in shaft 1 and the shaft hole of the driven synchronous pulley 12, so that the driven synchronous pulley 12 can move up and down along the rotary press-in shaft 1, and the driven synchronous pulley 12 can drive the rotary press-in shaft 1 to rotate. Of course, a tensioning pulley 37 can also be provided for tensioning the synchronous belt. It can be understood that the synchronous belt transmission assembly can also be replaced by other transmission assemblies, such as gears and chain drives.

[0057] Furthermore, a coupling 34 and a torque sensor 33 are provided between the output shaft of the reducer and the input end of the transmission shaft. The torque sensor 33 is located between the upper and lower couplings 34, the upper coupling is connected to the transmission shaft, and the lower coupling is connected to the output shaft of the reducer. The torque sensor 33 is used to detect the torque and control the servo motor 31 according to the torque data to ensure that the torque is within the set range.

[0058] In this embodiment, the pressing mechanism 2 includes a fixed bracket 20 and a lifting plate 22, and the fixed bracket 20 includes a bottom plate 201, a top plate 202 and a support rod 203 arranged between the bottom plate and the top plate. A lifting plate 22 is provided between the bottom plate 201 and the top plate 202, and the lifting plate 22 is connected with the support rod 203 and moves up and down along the support rod. Among them, the lower end of the rotary pressing shaft 1 is installed on the lifting plate 22, and the lifting plate 22 is provided with a plane bearing 24 that rotatably supports the lower end of the rotary pressing shaft. The center area of ​​the top plate of the fixed bracket is hollow, allowing the rotary pressing shaft 1 to pass through. The lifting plate 22 is driven to rise and fall by the servo electric cylinder 21, and drives the rotary pressing shaft 1 to move linearly up and down. The provision of a plane bearing can ensure that the rotary pressing shaft 1 rotates smoothly without affecting the upward pressing action.

[0059] Furthermore, the output end 211 of the servo electric cylinder 21 is connected to a lower joint 23, and a pressure sensor 25 for detecting the piston pressing force is provided between the lower joint 23 and the lifting plate 22. The servo electric cylinder 21 is controlled according to the pressure data to ensure that the pressing force is within a set range. The lifting plate 22 is provided with a guide sleeve connected to the guide rod, and the lower end of the rotary pressing shaft is connected to an upper joint 26, and the upper joint 26 is connected to the plane bearing 24.

[0060] Since the dust cover is made of rubber, it is not easy to control during the blowing process, and sometimes the fluctuation of air pressure will cause the dust cover to fall off completely. Therefore, the press-fitting device can also be provided with a dust cover protection mechanism 4. The dust cover protection mechanism 4 includes a protection plate 41, and the protection plate 41 is provided with a protection ring 411 which is sleeved on the outer ring of the dust cover. The protection plate has a limiting effect on the outer ring of the dust cover, and the radial outer side of the outer ring of the dust cover is restricted. During the blowing process, air can only be discharged downward, which prevents the dust cover from falling off during the blowing process, increases the success rate of blowing the dust cover, and is conducive to the successful assembly of the dust cover.

[0061] Furthermore, the protective plate 41 is connected with a height adjustment mechanism for adjusting the height of the protective plate, and different protective heights can be adjusted according to different products.

[0062] Specifically, the height adjustment mechanism includes a limit seat 45 and a height adjustment cylinder 42. The lower part of the height adjustment cylinder 42 is fixed to the top plate 202. The limit seat 45 is fixed to the top of the height adjustment cylinder 42. The piston push rod of the height adjustment cylinder 42 is located below the top plate and is connected to a lower lifting block 43. The lower lifting block 43 is connected to two side-by-side lifting rods 44. The lifting rods 44 are connected to the guide holes on the top plate and the limit seat. The top of the lifting rod is connected to an upper lifting block 47. The protective plate 41 is installed on the upper lifting block 47. The upper lifting block is driven to rise and fall by the height adjustment cylinder to realize the lifting and falling of the protective plate, so as to adjust different protective heights according to different products. Among them, the limit seat 45 is connected to a limit screw 46, which is used to cooperate with the upper lifting block to limit the downward position of the protective plate.

[0063] In addition, the position of the piston subassembly is not fixed during the movement, and there is a possibility of positional displacement. A correction mechanism can be added to prevent the subassembly from being in the wrong position and unable to be pressed in. The press-fitting device also includes a piston subassembly correction mechanism 5 for correcting the position of the piston subassembly so that the piston subassembly 100 is aligned with the dust cover 103. The piston subassembly correction mechanism 5 includes an air claw, which is provided with two claws 51 that can be opened and closed, and an arc groove is provided on the inner side of the claw, and the center of the two claws corresponds to the center of the piston subassembly 100. In this way, after the two claws are closed, the center of the piston subassembly can be aligned with the center of the dust cover. Here, the air claw is installed on the top plate and is located directly below the protective plate, corresponding to the position of the screw and sleeve subassembly 102. Prevent the subassembly from being in the wrong position and unable to be pressed in.

[0064] In addition, the press-fitting device further includes a transverse movement mechanism 6, which includes a transverse movement cylinder 61, a transverse guide rail 62, and a transverse movement slider 63, for realizing the transverse movement of the press-fitting device as a whole. The piston push rod of the transverse movement cylinder is connected to the transverse movement slider 63, and the transverse movement slider 63 is fixed to the top plate 202 and slidably cooperates with the transverse guide rail 62. The transverse movement here refers to the front-to-back direction.

[0065] The rotating press-in shaft 1 drives the piston subassembly 100 to be pressed together with the caliper body equipped with the dust cover 103. During the entire press-in process, there are three key height positions:

[0066] Position 1: Correction of the piston subassembly: The position of the piston subassembly is not fixed during movement, and there is a possibility of positional deviation. A piston subassembly correction mechanism 5 is added to correct the position of the piston subassembly to prevent the piston subassembly from being in the wrong position and unable to be pressed in.

[0067] Position 2 Piston dust cover blow-out position: When the piston subassembly reaches this position, the air blowing mechanism will allow a certain pressure of gas to rush into the caliper body, and the piston dust cover will blow out, wrapping the piston subassembly and slowly pressing it into the rectangular sealing ring position. During this period, the dust cover protection mechanism will increase the success rate of the dust cover blowing out;

[0068] Position 3 rectangular sealing ring position: At this position, the piston subassembly needs to be rotated while being slowly pressed in, and the rectangular sealing ring needs to be cut when the piston subassembly is inserted until it is pressed to the final position. Therefore, at this time, the rotating pressing shaft is driven by the rotating mechanism to rotate while being driven by the pressing mechanism to move upward.

[0069] After reaching the final position of the press-in, it is necessary to rotate forward and reverse (the forward and reverse rotation is to rotate the screw sleeve to a certain height for the circlip assembly)

[0070] The specific working process of the brake caliper piston subassembly and dust cover press-fitting device of the present invention is as follows: when the assembled product arrives at the workstation, the pressing mechanism presses and fixes the product (the product and the pressing mechanism are not shown in the figure), the lateral movement mechanism moves the entire device to the working position, the servo electric cylinder controls the piston subassembly to move up to the piston subassembly correction position at position 1, and the piston subassembly correction mechanism corrects the piston subassembly. After the correction, the servo electric cylinder drives the piston subassembly to continue to rise to position 2 to blow up the dust cover. After the blowing is successful, the servo electric cylinder drives the piston subassembly to rise to position 3. The servo motor works to drive the rotating pressing shaft, so that the piston subassembly can be rotated. At the same time, the servo electric cylinder drives the piston subassembly to rise slowly, and finally the piston subassembly is pressed into place.

[0071] The above is only a specific embodiment of the invention, but the protection scope of the invention is not limited thereto. Those skilled in the art should understand that the invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the invention will be included in the scope of the claims.

Claims

1. A brake caliper piston subassembly and a dust cover press-fit device, wherein the dust cover is installed into the caliper body of the brake caliper, and the caliper body is fixed above the press-fit device, characterized in that: The press-fitting device comprises: A rotary press-in shaft, which is arranged vertically, and an upper end of which is provided with a piston positioning structure for positioning the piston subassembly, and the rotary press-in shaft drives the piston subassembly to be press-fitted with the dust cover; A rotating mechanism, the rotating mechanism comprising a servo motor and a transmission assembly, the servo motor drives the rotary pressing shaft to rotate through the transmission assembly; A pressing mechanism, the pressing mechanism comprising a servo electric cylinder, the servo electric cylinder drives the rotating pressing shaft to move linearly up and down; The linkage control system is used to control the servo electric cylinder and the servo motor to realize the rotation and up and down movement of the rotary pressing shaft, so that the piston subassembly is assembled with the caliper body equipped with a dust cover.

2. The brake caliper piston subassembly and dust cover press-fitting device according to claim 1, characterized in that: The servo motor is connected to a speed reducer, a transmission shaft is arranged parallel to the side of the rotary pressing shaft, the speed reducer drives the transmission shaft to rotate, and the transmission shaft is connected to the rotary pressing shaft through a transmission assembly.

3. The brake caliper piston subassembly and dust cover press-fitting device according to claim 2, characterized in that: The transmission assembly is a synchronous belt transmission assembly, which includes an active synchronous belt pulley installed on a transmission shaft, a driven synchronous belt pulley slidably nested on a rotating press-in shaft, and a synchronous belt connecting the active synchronous belt pulley and the driven synchronous belt pulley.

4. The brake caliper piston subassembly and dust cover press-fitting device according to claim 2, characterized in that: A coupling and a torque sensor are provided between the output shaft of the reducer and the input end of the transmission shaft.

5. The brake caliper piston subassembly and dust cover press-fitting device according to claim 1, characterized in that: The lower end of the rotary pressing shaft is installed on the lifting plate, and the lifting plate is installed with a plane bearing which rotatably supports the lower end of the rotary pressing shaft.

6. The brake caliper piston subassembly and dust cover press-fitting device according to claim 5, characterized in that: The output end of the servo electric cylinder is connected with a lower joint, and a pressure sensor for detecting the pressing force of the piston is arranged between the lower joint and the lifting plate.

7. The brake caliper piston subassembly and dust cover press-fitting device according to claim 1, characterized in that: The press-fitting device also includes a protective plate, and the protective plate is provided with a protective ring which is sleeved on the outer ring of the dust cover.

8. The brake caliper piston subassembly and dust cover press-fitting device according to claim 7, characterized in that: The protective plate is connected to a height adjustment mechanism for adjusting the height of the protective plate.

9. The brake caliper piston subassembly and dust cover press-fitting device according to claim 1, characterized in that: The press-fitting device also includes a piston subassembly correction mechanism for correcting the position of the piston subassembly so that the piston subassembly is aligned with the dust cover.

10. The brake caliper piston subassembly and dust cover press-fitting device according to claim 9, characterized in that: The piston subassembly correction mechanism includes an air claw.

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