Brake disc grinding equipment for automobile brake

Abstract

The invention relates to the technical field of grinding devices, in particular to brake disc grinding equipment for an automotive brake, which comprises a platform, a ball screw linear sliding table module mounted at the top of the platform, a brake disc fixing and clamping device arranged at the top of the ball screw linear sliding table module, and a portal frame mounted at the top of the platform. A servo gear rack moving device is installed on the transverse section of the portal frame, a ball screw linear moving device is arranged on one side of the servo gear rack moving device, and a rotary grinding device is arranged at the bottom of the ball screw linear moving device. The problems that an existing brake disc grinding device is not high in machining precision, low in automation level, poor in clamp universality and practicability and tedious in clamp replacement operation are solved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, in particular to a brake disc grinding device for automobile brakes. Background Art

[0002] With the rapid development of the automobile industry, the demand for processing automobile parts is increasing. Among them, brake discs are key components in the automobile braking system, and their processing quality and efficiency have an important impact on the performance and safety of the entire vehicle. In the manufacturing process of brake discs, the grinding process is one of the important links to ensure its dimensional accuracy, geometric tolerances and surface finish.

[0003] However, at present, many brake disc grinding equipment still relies on manual adjustment or semi-automatic processing. This processing method requires high skills from the operator and is easily affected by human factors, making it difficult to ensure processing accuracy. In addition, due to the limited positioning accuracy of the equipment in the three directions of X, Y, and Z, it may cause large deviations in the processed surface, affecting the product's qualification rate and performance. Due to the diversity of models, specifications, and shapes of brake discs, traditional equipment has poor adaptability to brake discs of different specifications. The clamping mechanism of the equipment lacks flexibility and cannot be quickly adjusted to adapt to different workpiece sizes. It often requires the replacement of fixtures or complex manual adjustments, which are cumbersome to operate. Summary of the invention

[0004] In view of the defects existing in the above prior art, the present invention provides a brake disc grinding device for automobile brakes, which solves the problems of low processing accuracy, low automation level, poor versatility and practicality of the fixture, and cumbersome operation of replacing the fixture in the existing brake disc grinding equipment.

[0005] The objective of the present invention is achieved through the following technical scheme: a brake disc grinding device for automobile brakes, comprising a platform, a ball screw linear slide module is installed on the top of the platform, a brake disc fixing clamping device is arranged on the top of the ball screw linear slide module, a gantry is installed on the top of the platform, a servo gear rack moving device is installed on the transverse section of the gantry, a ball screw linear moving device is arranged on one side of the servo gear rack moving device, and a rotary grinding device is arranged at the bottom of the ball screw linear moving device.

[0006] Furthermore, the ball screw linear slide module includes two first bearing seats, the first bearing seats are connected to the top of the platform, a first screw is rotatably connected between the two first bearing seats through a bearing, a first nut seat is threadedly connected to the surface of the first screw, first linear guides are installed on both sides of the top of the platform located on the first screw, a slide is slidably connected to the top of the two first linear guides, the bottom of the slide is connected to the first nut seat, a first servo motor is installed on one side of the platform through a motor mounting frame, and the output end of the first servo motor is connected to the first screw.

[0007] Further, the brake disc fixing and clamping device includes a motor mounting box, in which a first reduction motor is installed, a pentagonal bracket is connected to the top of the motor mounting box, and the top of the pentagonal bracket is rotatably connected to the first gear through a rotating shaft, and the top of each corner of the pentagonal bracket is slidably connected to a sliding rod, and each corner of the pentagonal bracket is provided with a sliding groove for the sliding of the sliding rod, and the top of the sliding rod close to the first gear is connected to a limiting rod, and the surface of the first gear is evenly provided with moving holes for the movement of the limiting rod, and the five moving holes are arc-shaped, and the limiting rod is located in the moving hole for movement, and the sliding rod is connected to an arc-shaped clamping plate at one end away from the first gear, and a plug-in groove is provided on the top of the arc-shaped clamping plate, and an extension clamping plate is plugged into the plug-in groove, and one of the brackets of the pentagonal bracket is rotatably connected to a rotating shaft, and a second gear is installed on the top of the rotating shaft, and the second gear is meshed with the first gear, and a driven pulley is installed on the bottom of the rotating shaft through the motor mounting box, and a driving pulley is installed on the top of the first reduction motor, and the driving pulley and the driven pulley are connected by belt transmission.

[0008] Furthermore, the servo gear rack moving device includes a second linear guide rail, the second linear guide rail is installed on the top and one side of the gantry transverse section, the first rack is installed on the top of the gantry transverse section, the second linear guide rail is commonly connected with a frame-type moving frame, a second servo motor is installed on the top of the frame-type moving frame, the output end of the second servo motor passes through the frame-type moving frame and is connected with a third gear, and the third gear is meshingly connected with the first rack.

[0009] Furthermore, the ball screw linear moving device includes a vertical frame, one side and one side of the vertical frame are both installed with a third linear guide rail, the third linear guide rail is slidably connected to the frame-type moving frame, two second bearing seats are installed on one side of the vertical frame, a second screw rod is rotatably connected between the two second bearing seats through a bearing, a second nut seat is threadedly connected to the surface of the second screw rod, the second nut seat is fixedly connected to the frame-type moving frame, a third servo motor is installed on one side of the vertical frame through a motor mounting frame, and the output end of the third servo motor is connected to the second screw rod through a coupling.

[0010] Furthermore, the rotary grinding device includes a second reduction motor, an output end of the second reduction motor is connected to a rotating frame through a flange coupling, a third reduction motor is installed on one side of the rotating frame, the output end of the third reduction motor passes through the rotating frame and is connected to a U-shaped rotating mounting frame through a flange coupling, the U-shaped rotating mounting frame is rotatably connected to the inner side walls of the rotating frame, a grinding drive motor is installed on the U-shaped rotating mounting frame, the output end of the grinding drive motor is connected to a grinding tool, and a tool protection shell is installed at the bottom of the grinding drive motor.

[0011] Furthermore, the bottom of the motor mounting box is connected to the top of the slide, and the second reduction motor is installed at the bottom of the frame-type moving frame.

[0012] In summary, compared with the prior art, the present invention has the following advantages:

[0013] 1. The entire processing process is driven by a servo motor and a reduction motor, combined with various linear and rotary transmission devices to achieve precise positioning of the brake disc grinding in the five directions of X, Y, Z, U1, and U2. The processing path is completely controlled by the program, avoiding the error of manual adjustment and improving the level of processing automation. The automatically controlled grinding process reduces the impact of human intervention on processing consistency, with precise positioning in all directions. The processed brake disc maintains a high degree of consistency in geometric dimensions and surface quality, ensuring the controllability of product quality.

[0014] 2. After grinding the first processing surface, the equipment automatically releases the brake disc fixing clamping device, manually flips it, and then re-fixes the brake disc to grind the second processing surface, which greatly improves the convenience of operation.

[0015] 3. The arc-shaped clamping plate and extended clamping plate design of the brake disc fixing clamping device enable the equipment to adapt to brake discs of various specifications and sizes, thereby improving the versatility of the equipment. The clamping device can adjust the clamping force and range through the sliding of the moving hole and the sliding rod to avoid loose clamping or excessive clamping problems caused by different workpiece specifications.

[0016] 4. The use of ball screw, linear guide and rack transmission ensures the accuracy of the movement of the slide and grinding tool, reduces errors, and makes the geometric dimensions and surface quality of the brake disc after processing meet high-precision requirements. The rotary grinding device is combined with the precise control of multiple motors to ensure a smooth grinding process, reduce vibration and deviation, and improve the consistency and smoothness of the grinding surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the ball screw linear slide module of the present invention;

[0019] Figure 3 This is a schematic structural diagram of the brake disc fixing and clamping device of the present invention;

[0020] Figure 4 This is a schematic structural diagram of the brake disc fixing and clamping device of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the servo gear rack moving device of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the servo gear rack moving device of the present invention;

[0023] Figure 7 It is a schematic structural diagram of the ball screw linear moving device of the present invention;

[0024] Figure 8 It is a schematic structural diagram of the ball screw linear moving device of the present invention;

[0025] Fig. 9 It is a schematic structural diagram of the rotary grinding device of the present invention;

[0026] Fig.10 It is a schematic structural diagram of the rotary grinding device of the present invention.

[0027] In the figure: 1-platform, 2-ball screw linear slide module, 3-brake disc fixing clamping device, 4-gantry, 5-servo gear rack moving device, 6-ball screw linear moving device, 7-rotating grinding device, 201-first bearing seat, 202-first screw, 203-first nut seat, 204-first linear guide, 205-slide, 206-first servo motor, 301-motor mounting box, 302-first reduction motor, 303-pentagonal bracket, 304-first gear, 305-sliding rod, 306-limiting rod, 307-moving hole, 308-arc clamping plate, 309-plug slot, 310-extension clamp Holding plate, 311-rotating axis, 312-second gear, 313-driven pulley, 314-driving pulley, 501-second linear guide, 502-first rack, 503-frame-type moving frame, 504-second servo motor, 505-third gear, 601-vertical frame, 602-third linear guide, 603-second bearing seat, 604-second screw rod, 605-second nut seat, 606-third servo motor, 701-second reduction motor, 702-rotating frame, 703-third reduction motor, 704-U-type rotating mounting frame, 705-grinding drive motor, 706-grinding tool, 707-tool protective shell. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further specifically described below through specific embodiments, but the present invention is not limited to these embodiments.

[0029] Combination Figures 1 to 10 As shown, a brake disc grinding device for automobile brakes includes a platform 1, a ball screw linear slide module 2 is installed on the top of the platform 1, a brake disc fixing clamping device 3 is arranged on the top of the ball screw linear slide module 2, a gantry 4 is installed on the top of the platform 1, a servo gear rack moving device 5 is installed on the transverse section of the gantry 4, a ball screw linear moving device 6 is arranged on one side of the servo gear rack moving device 5, and a rotary grinding device 7 is arranged at the bottom of the ball screw linear moving device 6.

[0030] Combination Figure 2As shown, the ball screw linear slide module 2 includes two first bearing seats 201, the first bearing seat 201 is connected to the top of the platform 1, and the first screw rod 202 is rotatably connected between the two first bearing seats 201 through a bearing, and the first nut seat 203 is threadedly connected to the surface of the first screw rod 202, and the first linear guide rails 204 are installed on both sides of the first screw rod 202 at the top of the platform 1, and the slide 205 is slidably connected to the top of the two first linear guide rails 204 together, and the bottom of the slide 205 is connected to the first nut seat 203, and a first servo motor 206 is installed on one side of the platform 1 through a motor mounting frame, and the output end of the first servo motor 206 is connected to the first screw rod 202. Starting the first servo motor 206 drives the first screw rod 202 to drive the first nut seat 203 to move, and the first nut seat 203 is connected to the slide 205, so that the slide 205 moves back and forth along the first linear guide rail 204, so as to realize the X-direction positioning of the brake disc and improve the stability and accuracy of the equipment operation.

[0031] Combination Figure 3 to Figure 4As shown, the brake disc fixing clamping device 3 includes a motor mounting box 301, a first reduction motor 302 is mounted in the motor mounting box 301, a pentagonal bracket 303 is connected to the top of the motor mounting box 301, a first gear 304 is rotatably connected to the top of the pentagonal bracket 303 through a rotating shaft, a sliding rod 305 is slidably connected to the top of each corner of the pentagonal bracket 303, a sliding groove for sliding the sliding rod 305 is provided at each corner of the pentagonal bracket 303, a limiting rod 306 is connected to the top of one end of the sliding rod 305 near the first gear 304, and a limit rod 306 is evenly provided on the surface of the first gear 304 for moving the limit rod 306 The movable hole 307 is an arc-shaped one. The limit rod 306 is located in the movable hole 307 and moves. The end of the sliding rod 305 away from the first gear 304 is connected with an arc-shaped clamping plate 308. The top of the arc-shaped clamping plate 308 is provided with a plug-in slot 309. The plug-in slot 309 is plugged with an extended clamping plate 310. One of the brackets of the pentagonal bracket 303 is rotatably connected with a rotating shaft 311. The top of the rotating shaft 311 is equipped with a second gear 312. The second gear 312 is meshed with the first gear 304. The bottom of the rotating shaft 311 passes through the motor mounting box 301 and is equipped with a driven pulley 313 A driving pulley 314 is installed on the top of the first reduction motor 302. The driving pulley 314 is connected to the driven pulley 313 through a belt transmission. The first reduction motor 302 transmits power to the driven pulley 312 through the driving pulley 313, thereby driving the rotating shaft 311 to rotate. The rotating shaft 311 drives the second gear 312 to drive the first gear 304 to rotate. The rotation of the first gear 304 drives the limit rod 306 to move in the moving hole 307, and the sliding rod 305 will slide in the sliding groove of the pentagonal bracket 303. The arc-shaped clamping plates 308 at one end of the five sliding rods 305 will extend outward synchronously. The inner ring of the brake disc is gradually stretched and clamped to ensure firm fixation. It can flexibly adapt to brake discs of different specifications and shapes, thereby improving the positioning accuracy of the brake disc during the clamping process. When grinding the second processing surface, the first gear 304 is rotated in the opposite direction by the first reduction motor 302, and the sliding rod 305 and the arc-shaped clamping plate 308 slide in the opposite direction. After sliding to the maximum stroke, the brake disc is turned over, and the protruding part of the brake disc is placed in the five extended clamping plates 310, and then the first gear 304 is rotated forward to clamp the protruding part of the brake disc to complete the fixation, thereby improving the portability of the operation.

[0032] Combination Figures 5 and 6As shown, the servo gear rack moving device 5 includes a second linear guide rail 501, the second linear guide rail 501 is installed on the top and one side of the transverse section of the gantry 4, the first rack 502 is installed on the top of the transverse section of the gantry 4, the second linear guide rail 501 is commonly connected with a frame-type moving frame 503, the top of the frame-type moving frame 503 is installed with a second servo motor 504, the output end of the second servo motor 504 passes through the frame-type moving frame 503 and is connected with a third gear 505, the third gear 505 is meshed with the first rack 502, the second servo motor 504 drives the third gear 505 to mesh with the first rack 502, and through the sliding of the frame-type moving frame 503, the grinding tool 706 is driven to move along the transverse section of the gantry 4, so as to realize the positioning of the grinding tool 706 in the Y direction, and effectively ensure the accuracy and consistency of the grinding path.

[0033] Combination Figures 7 and 8 As shown, the ball screw linear moving device 6 includes a vertical frame 601, and the third linear guide rail 602 is installed on one side and one side of the vertical frame 601. The third linear guide rail 602 is slidably connected to the frame-type moving frame 503. Two second bearing seats 603 are installed on one side of the vertical frame 601, and a second screw rod 604 is rotatably connected between the two second bearing seats 603 through a bearing. A second nut seat 605 is threadedly connected to the surface of the second screw rod 604, and the second nut seat 605 is fixedly connected to the frame-type moving frame 503. A third servo motor 606 is installed on one side of the vertical frame 601 through a motor mounting frame, and the output end of the third servo motor 606 is connected to the second screw rod 604 through a coupling. The third servo motor 606 drives the second screw rod 604 to drive the second nut seat 605 to slide, thereby controlling the grinding tool 706 to move up and down along the vertical frame 601, realizing the positioning of the grinding tool 706 in the Z direction, and ensuring the relative position stability of the tool and the workpiece during the grinding process.

[0034] Combination Figures 9 and 10As shown, the rotary grinding device 7 includes a second reduction motor 701, the output end of the second reduction motor 701 is connected to a rotating frame 702 through a flange coupling, a third reduction motor 703 is installed on one side of the rotating frame 702, the output end of the third reduction motor 703 passes through the rotating frame 702 and is connected to a U-shaped rotating mounting frame 704 through a flange coupling, the U-shaped rotating mounting frame 704 is rotatably connected to the inner side walls of the rotating frame 702, a grinding drive motor 705 is installed on the U-shaped rotating mounting frame 704, and the output end of the grinding drive motor 705 is connected to the grinding The cutting tool 706 and the grinding drive motor 705 are provided with a tool protection shell 707 at the bottom. The second reduction motor 701 drives the rotating frame 702 to rotate and adjust the angle, so as to realize the positioning of the grinding tool 706 in the U1 direction, thereby meeting the grinding requirements of the complex processing surfaces of brake discs of different sizes. The third reduction motor 703 drives the U-shaped rotating mounting frame 704 to adjust the grinding direction, so that the grinding tool 706 is in the correct position, and the positioning of the grinding tool 706 in the U2 direction is realized, and the grinding angle of the grinding tool 706 can be adjusted.

[0035] Combination Figures 1 to 10 As shown, the bottom of the motor mounting box 301 is connected to the top of the slide 205, and the second reduction motor 701 is installed at the bottom of the frame-type moving frame 503, ensuring the stability of the entire structure and the efficient transmission of the transmission force, further improving the stability during the processing.

[0036] Working principle: First, place the brake disc in the fixed clamping device 3 to ensure fixation, start the first reduction motor 302 to transmit power to the driven pulley 313 through the active pulley 314, thereby driving the rotating shaft 311 to rotate, and the rotating shaft 311 drives the second gear 312 to drive the first gear 304 to rotate. The rotation of the first gear 304 drives the limit rod 306 to move in the moving hole 307, and the sliding rod 305 will slide in the sliding groove of the pentagonal bracket 303. The arc-shaped clamping plates 308 at one end of the five sliding rods 305 will synchronously extend outward to gradually clamp the inner ring of the brake disc to ensure firm fixation, and then position the grinding tool 706, and start the first servo motor 2 06 drives the first screw rod 202 to move the first nut seat 203, and the first nut seat 203 is connected to the slide 205, so that the slide 205 moves forward and backward along the first linear guide rail 204 to achieve the positioning of the brake disc in the X direction, and starts the second servo motor 504 to drive the third gear 505 to mesh with the first rack 502, and drives the grinding tool 706 to move along the horizontal section of the gantry 4 through the sliding of the frame-type moving frame 503 to achieve the positioning of the grinding tool 706 in the Y direction, and starts the third servo motor 606 to drive the second screw rod 604, drives the second nut seat 605 to slide, thereby controlling the grinding tool 706 to move up and down along the vertical frame 601, To achieve the positioning of the grinding tool 706 in the Z direction, start the second reduction motor 701, drive the rotating frame 702 to rotate and adjust the angle, and achieve the positioning of the grinding tool 706 in the U1 direction. Start the third reduction motor 703, drive the U-shaped rotating mounting frame 704 to adjust the grinding direction, so that the grinding tool 706 is in the correct position, and achieve the positioning of the grinding tool 706 in the U2 direction. Start the grinding drive motor 705, drive the grinding tool 706 to rotate at a set speed. According to the set program, the grinding tool 706 gradually approaches the first processing surface of the brake disc. After the first processing surface is ground, stop the grinding drive motor 705, let the grinding tool 706 stop rotating, and start The release procedure of the dynamic brake disc fixing clamping device 3 is that the first gear 304 rotates in the opposite direction, and the brake disc is loosened by the reverse sliding of the sliding rod 305 and the arc-shaped clamping plate 308, and then the extended clamping plate 310 is inserted into the insertion slot 309, and the brake disc is manually turned over to grind the second processing surface. The first gear 304 is rotated in the opposite direction by the first reduction motor 302, and the sliding rod 305 and the arc-shaped clamping plate 308 slide in the opposite direction. After sliding to the maximum stroke, the protrusion of the brake disc is placed in the five extended clamping plates 310, and then the first gear 304 is rotated forward to clamp the protrusion of the brake disc to complete the fixation, and then the positioning grinding operation is performed.

[0037] The implementation of the present invention is not limited to the above-mentioned embodiments. Without departing from the spirit and scope of the present invention, ordinary technicians in this field can make various changes and improvements to the present invention in form and detail, and these are considered to fall within the protection scope of the present invention.

Claims

1. A brake disc grinding device for automobile brakes, comprising a platform (1), characterized in that: A ball screw linear slide module (2) is installed on the top of the platform (1), a brake disc fixing clamping device (3) is arranged on the top of the ball screw linear slide module (2), a gantry (4) is installed on the top of the platform (1), a servo gear rack moving device (5) is installed on the transverse section of the gantry (4), a ball screw linear moving device (6) is arranged on one side of the servo gear rack moving device (5), and a rotary grinding device (7) is arranged at the bottom of the ball screw linear moving device (6).

2. A brake disc grinding device for automobile brakes according to claim 1, characterized in that: The ball screw linear slide module (2) comprises two first bearing seats (201), wherein the first bearing seats (201) are connected to the top of the platform (1), a first screw rod (202) is rotatably connected between the two first bearing seats (201) via a bearing, a first nut seat (203) is threadedly connected to the surface of the first screw rod (202), first linear guide rails (204) are installed on both sides of the top of the platform (1) and the two first linear guide rails (204) are slidably connected to a slide (205) at the top, and the bottom of the slide (205) is connected to the first nut seat (203), and a first servo motor (206) is installed on one side of the platform (1) via a motor mounting frame, and an output end of the first servo motor (206) is connected to the first screw rod (202).

3. A brake disc grinding device for automobile brakes according to claim 2, characterized in that: The brake disc fixing and clamping device (3) comprises a motor mounting box (301), a first reduction motor (302) is mounted in the motor mounting box (301), a pentagonal bracket (303) is connected to the top of the motor mounting box (301), the top of the pentagonal bracket (303) is rotatably connected to a first gear (304) via a rotating shaft, a sliding rod (305) is slidably connected to the top of each corner of the pentagonal bracket (303), a sliding groove for sliding the sliding rod (305) is provided at each corner of the pentagonal bracket (303), a limiting rod (306) is connected to the top of one end of the sliding rod (305) close to the first gear (304), and moving holes (307) for moving the limiting rod (306) are evenly provided on the surface of the first gear (304), and the five moving holes (307) are in an arc shape, and the limiting rod (306) is located The movable hole (307) moves, and the sliding rod (305) is connected to an arc-shaped clamping plate (308) at one end away from the first gear (304). A plug-in slot (309) is provided on the top of the arc-shaped clamping plate (308), and an extension clamping plate (310) is inserted in the plug-in slot (309). One of the brackets of the pentagonal bracket (303) is rotatably connected to a rotating shaft (311), and a second gear (312) is installed on the top of the rotating shaft (311). The second gear (312) is meshedly connected with the first gear (304). The bottom of the rotating shaft (311) passes through the motor mounting box (301) and is installed with a driven pulley (313). A driving pulley (314) is installed on the top of the first reduction motor (302), and the driving pulley (314) and the driven pulley (313) are connected by belt transmission.

4. A brake disc grinding device for automobile brakes according to claim 3, characterized in that: The servo gear rack moving device (5) comprises a second linear guide rail (501), the second linear guide rail (501) is installed on the top and one side of the transverse section of the gantry (4), the first rack (502) is installed on the top of the transverse section of the gantry (4), the second linear guide rail (501) is commonly connected with a frame-type moving frame (503), the top of the frame-type moving frame (503) is installed with a second servo motor (504), the output end of the second servo motor (504) passes through the frame-type moving frame (503) and is connected with a third gear (505), and the third gear (505) is meshed with the first rack (502).

5. The brake disc grinding device for automobile brakes according to claim 4, characterized in that: The ball screw linear moving device (6) comprises a vertical frame (601), one side and one side of the vertical frame (601) are both installed with a third linear guide rail (602), the third linear guide rail (602) is slidably connected to the frame-type moving frame (503), one side of the vertical frame (601) is installed with two second bearing seats (603), a second screw rod (604) is rotatably connected between the two second bearing seats (603) via a bearing, a second nut seat (605) is threadedly connected to the surface of the second screw rod (604), the second nut seat (605) is fixedly connected to the frame-type moving frame (503), and one side of the vertical frame (601) is installed with a third servo motor (606) via a motor mounting frame, and the output end of the third servo motor (606) is connected to the second screw rod (604) via a coupling.

6. A brake disc grinding device for automobile brakes according to claim 5, characterized in that: The rotary grinding device (7) comprises a second reduction motor (701), the output end of the second reduction motor (701) is connected to a rotating frame (702) via a flange coupling, a third reduction motor (703) is installed on one side of the rotating frame (702), the output end of the third reduction motor (703) passes through the rotating frame (702) and is connected to a U-shaped rotating mounting frame (704) via a flange coupling, the U-shaped rotating mounting frame (704) is rotatably connected to the inner side walls of the rotating frame (702), a grinding drive motor (705) is installed on the U-shaped rotating mounting frame (704), the output end of the grinding drive motor (705) is connected to a grinding tool (706), and a tool protection shell (707) is installed at the bottom of the grinding drive motor (705).

7. A brake disc grinding device for automobile brakes according to claim 6, characterized in that: The bottom of the motor mounting box (301) is connected to the top of the slide (205), and the second reduction motor (701) is installed at the bottom of the frame-type moving frame (503).

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