Brake disc grinding device and method

Abstract

The present invention discloses a brake disc grinding device and method, and relates to the technical field of grinding equipment. The present invention comprises a connecting rod and a driving motor, wherein the lower end of the connecting rod is internally movably sleeved with a first convex disc, a cylindrical block filled with cooling water is fixed to the bottom of the first convex disc, the top of the cylindrical block is movably connected to the bottom of the connecting rod, an abrasive block is fixed to the bottom of the cylindrical block, a rubber film that fits the abrasive block is fixed to the inside of the lower end of the cylindrical block, a stable circulating cooling water delivery mechanism is installed on the cylindrical block, and a square groove is provided inside the connecting rod. According to the present invention, when the abrasive block is gradually ground down, the cylindrical block will stop rotating as a whole, thereby achieving the purpose of preventing the cylindrical block from continuing to rotate and damaging the brake disc when the abrasive block is ground down, and when the temperature of the abrasive block is too high and the cooling water cannot cool it down, the cylindrical block and the abrasive block will stop rotating, thereby achieving the purpose of preventing the abrasive block from continuing to grind the brake disc at high temperature.

Description

Technical Field

[0001] The invention relates to the technical field of grinding equipment, and in particular to a brake disc grinding device and method. Background Art

[0002] The brake disc is the friction pair of the disc brake. In addition to having the strength and rigidity required as a component, it should also have the highest possible and stable friction coefficient, as well as appropriate wear resistance, heat resistance, heat dissipation and heat capacity. The brake is a component in the braking system used to generate braking force to hinder the movement or movement trend of the vehicle. Except for various retarders, automobile brakes are almost all friction brakes that use the friction between the working surfaces of fixed elements and rotating elements to generate braking torque.

[0003] A Chinese patent with authorization announcement number CN112454049B discloses a burr grinding device for the production of passenger car brake discs and a method of using the same, comprising a base plate, a motor, a brake disc grinding device, a universal brake disc placement device and a brake disc cleaning device. A motor is installed on the top surface of the base plate, and a universal brake disc placement device is fixedly connected to the end of the motor's main shaft. The universal brake disc placement device comprises a placement plate, a fixing nail, a base and a tension spring. The end of the motor's main shaft is fixedly connected to the placement plate, and fixing nails are evenly installed on the inner side of the placement plate. The fixing nails penetrate the placement plate, and the fixing nails are slidably connected to the placement plate. The bottom end surface of the fixing nail is fixedly connected to the base, and the top surface of the base is fixedly connected to the tension spring. The top end of the tension spring is fixedly connected to the placement plate. In the invention, the device can be installed and fixed on most existing passenger car brake discs, thereby greatly improving the applicability of the device and facilitating use.

[0004] The patent and the prior art still have the following technical problems in actual use:

[0005] 1. When grinding the brake disc with the existing grinding disc, if the abrasive at the bottom of the grinding disc is completely ground, the grinding disc that continues to rotate may scratch the brake disc, thereby causing damage to the brake disc. Therefore, it is necessary to improve it.

[0006] 2. At the same time, when the existing grinding disc is grinding the brake disc, if the temperature of the grinding disc is too high, the grinding disc that continues to rotate and has too high a temperature may be damaged, thereby affecting the quality of the grinding of the brake disc, so it needs to be improved. Summary of the invention

[0007] The purpose of the present invention is to solve the above problems and provide a brake disc grinding device and method.

[0008] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0009] The brake disc grinding device comprises a connecting rod and a driving motor, wherein a first convex disc is movably sleeved inside the lower end of the connecting rod, a cylindrical block filled with cooling water is fixed to the bottom of the first convex disc, the top of the cylindrical block is movably connected to the bottom of the connecting rod, an abrasive block is fixed to the bottom of the cylindrical block, a rubber film that fits the abrasive block is fixed inside the lower end of the cylindrical block, a stable circulating cooling water delivery mechanism is installed on the cylindrical block, a square groove is opened inside the connecting rod, a side port is opened on the left side of the connecting rod, and the first convex disc A first square hole connected to the square groove is provided inside the cylindrical block, a second square hole connected to the first square hole is provided inside the cylindrical block, a square block is movably sleeved inside the first square hole, the upper end of the square block is movably sleeved with the inner wall of the square groove, a fixed block is fixed inside the cylindrical block, a second convex disk is movably sleeved inside the fixed block, a rigid spring is fixed on the top of the second convex disk, the upper end of the rigid spring is fixedly connected to the square, a rotating rod is transmission-connected to the drive motor, and the lower end of the rotating rod is fixedly connected to the connecting rod.

[0010] Furthermore, the stable circulating cooling water delivery mechanism comprises a stable water delivery component and a circulating cooling water component;

[0011] Among them, the stable water delivery component includes a transparent box fixedly connected to the cylindrical block, and the number of the transparent boxes is two. The interiors of the two transparent boxes are movably sleeved with rotating blades, and one end of the rotating blade is fixed with a rotating wheel located outside the transparent box. The number of the rotating wheels is two, and the two rotating wheels are connected by a transmission belt. The upper ends of the two transparent boxes are fixedly connected with a connecting pipe, and the connecting pipe is connected to the circulating cooling water component.

[0012] Furthermore, the circulating cooling water assembly includes mounting blocks fixed on both sides of the bottom of the driving motor, and a fixed steel pipe is fixed to the bottom of the mounting block. The number of the fixed steel pipes is two, and the two fixed steel pipes are connected to the external cooling water delivery equipment through a hose. The lower ends of the two fixed steel pipes are fixedly connected to a partition cavity block, and the internal movable sleeve of the partition cavity block is provided with a sleeve ring. The number of the sleeve rings is two, and the two sleeve rings are fixedly connected to the connecting pipe respectively.

[0013] Furthermore, a round rod is movably sleeved inside the block, and a round block is fixed at the lower end of the round rod.

[0014] Furthermore, a moving block is fixed on the top of the round rod, and one end of the moving block passes through the side opening and is movably connected to a circular ring block.

[0015] Furthermore, a connecting block is provided at the right end of the annular block, a threaded rod is sleeved on the upper limit position of the connecting block, a side block is threadedly sleeved on the outer surface of the upper end of the threaded rod, the side surface of the side block is fixedly connected to the outer surface of the connecting rod, and a rotating block is fixed on the upper end of the threaded rod.

[0016] Furthermore, the inner wall of the side opening is provided with scale markings.

[0017] Furthermore, an air leakage gap is provided on the inner wall at the rear end of the block, and the air leakage gap is located at the lower end of the block.

[0018] The grinding method of the brake disc grinding device comprises the following steps:

[0019] S1. First, the driving motor is started, so that the rotating rod drives the connecting rod to rotate, and then the connecting rod drives the first convex disc and the cylindrical block to rotate through the square groove, the square block and the first square hole, so that the cylindrical block drives the abrasive block to grind the brake disc;

[0020] S2, the external cooling water delivery equipment delivers cooling water to the inside of the cylindrical block in a stable circulation through the stable circulating cooling water delivery mechanism, so that the cooling water cools the abrasive block, thereby achieving the purpose of circulating cooling and cooling the abrasive block, and avoiding pollution caused by contact between the cooling water and the outside world;

[0021] S3. When the abrasive block is gradually worn away, the rigid spring pulls the square block to compress the cooling water inside the cylindrical block, so that the cooling water inside the cylindrical block squeezes the rubber film and contacts the brake disc. At this time, since the cylindrical block is still rotating as a whole, the rubber film in contact with the brake disc will be rubbed out of the hole, so that the water inside the cylindrical block is discharged through the hole. At the same time, the rigid spring will pull the square block completely out of the square groove, so that the cylindrical block will stop rotating as a whole, thereby achieving the purpose of preventing the cylindrical block from continuing to rotate and damaging the brake disc when the abrasive block is worn away.

[0022] S4. When the temperature of the abrasive block is too high and the cooling water cannot cool it down, the cooling water inside the cylindrical block will generate water vapor due to the high temperature. As the water vapor inside the cylindrical block gradually increases, the water vapor squeezes the block out of the first square hole, and causes the block to stretch the rigid spring, thereby causing the block to move and open the side port, so that the water vapor inside the cylindrical block can be discharged through the side port. At the same time, the connecting rod will not be able to drive the first convex disk and the cylindrical block to rotate, thereby achieving the purpose of preventing the abrasive block from continuing to grind the brake disk at high temperature.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. In the present invention, when the abrasive block is gradually ground away, the rigid spring will pull the square block to compress the cooling water inside the cylindrical block, thereby causing the cooling water inside the cylindrical block to squeeze the rubber film and contact the brake disc. At this time, since the abrasive block is still rotating to grind the brake disc, the rubber film rotating and contacting the brake disc will be rubbed out of the hole, thereby causing the water inside the cylindrical block to be discharged through the hole. At the same time, the rigid spring will pull the square block completely out of the square groove, thereby causing the cylindrical block to stop rotating as a whole, thereby achieving the purpose of preventing the cylindrical block from continuing to rotate and damaging the brake disc when the abrasive block is ground away.

[0025] 2. In the present invention, when the temperature of the abrasive block is too high and the cooling water cannot cool it down, the cooling water inside the cylindrical block will generate water vapor due to the high temperature. As the water vapor inside the cylindrical block gradually increases, the water vapor squeezes the block out of the first square hole, and causes the block to stretch the rigid spring and open the side port, so that the water vapor inside the cylindrical block is discharged through the side port. At the same time, the connecting rod will not be able to drive the first convex disk and the cylindrical block and the abrasive block to rotate, thereby achieving the purpose of the abrasive block not continuing to grind the brake disk at high temperature.

[0026] 3. The external cooling water delivery equipment of the present invention delivers cooling water to the inside of the cylindrical block in a stable circulation through a stable circulating cooling water delivery mechanism, so that the cooling water cools the abrasive block, thereby achieving the purpose of circulating cooling to cool the abrasive block and avoiding pollution caused by contact between the cooling water and the outside world. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 is a top cross-sectional schematic diagram of a partition cavity block of the present invention;

[0029] Figure 3 It is a front cross-sectional schematic diagram of the transparent box of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the connecting rod of the present invention;

[0031] Figure 5 is a front cross-sectional schematic diagram of a connecting rod of the present invention;

[0032] Figure 6 It is a schematic diagram of the connection between the connecting rod, the first convex disk and the cylindrical block of the present invention;

[0033] Figure 7 is a schematic diagram of the block of the present invention;

[0034] Figure 8 yes Figure 5 A partial enlarged schematic diagram in the middle.

[0035] Figure markings: 1. connecting rod; 2. side opening; 3. first convex disk; 4. cylindrical block; 5. abrasive block; 6. rubber film; 7. square groove; 8. first square hole; 9. second square hole; 10. fixed block; 11. second convex disk; 12. rigid spring; 13. block; 14. rotating rod; 15. driving motor; 16. side block; 17. rotating block; 18. threaded rod; 19. connecting block; 20. circular ring block; 21. moving block; 22. round rod; 23. round block; 24. transparent box; 25. rotating blade; 26. rotating wheel; 27. transmission belt; 28. connecting pipe; 29. ​​sleeve ring; 30. partition cavity block; 31. fixed steel pipe; 32. mounting block; 33. air leakage gap; 34. scale text. DETAILED DESCRIPTION

[0036] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0037] like Figure 1-Figure 8 As shown, the brake disc grinding device includes a connecting rod 1 and a driving motor 15, a first convex disc 3 is movably sleeved inside the lower end of the connecting rod 1, a cylindrical block 4 filled with cooling water is fixed to the bottom of the first convex disc 3, the top of the cylindrical block 4 is movably connected to the bottom of the connecting rod 1, an abrasive block 5 is fixed to the bottom of the cylindrical block 4, a rubber film 6 that fits the abrasive block 5 is fixed inside the lower end of the cylindrical block 4, a stable circulating cooling water delivery mechanism is installed on the cylindrical block 4, a square groove 7 is opened inside the connecting rod 1, a side port 2 is opened on the left side of the connecting rod 1, and a A first square hole 8 is connected to the square groove 7, and a second square hole 9 connected to the first square hole 8 is opened inside the cylindrical block 4. A square block 13 is movably sleeved inside the first square hole 8, and the upper end of the square block 13 is movably sleeved with the inner wall of the square groove 7. A fixed block 10 is fixed inside the cylindrical block 4, and a second convex disk 11 is movably sleeved inside the fixed block 10. A rigid spring 12 is fixed to the top of the second convex disk 11, and the upper end of the rigid spring 12 is fixedly connected to the block 13. A rotating rod 14 is transmission-connected to the driving motor 15, and the lower end of the rotating rod 14 is fixedly connected to the connecting rod 1.

[0038] By starting the driving motor 15, the rotating rod 14 drives the connecting rod 1 to rotate, and then the connecting rod 1 drives the first convex disc 3 to rotate through the square groove 7, the square block 13 and the first square hole 8, so that the first convex disc 3 drives the abrasive block 5 through the cylindrical block 4 to grind the brake disc;

[0039] When the abrasive block 5 is gradually worn away, the rigid spring 12 will pull the block 13 to move inside the first square hole 8 and the second square hole 9, and compress the cooling water inside the cylindrical block 4, so that the cooling water inside the cylindrical block 4 squeezes the rubber film 6 to contact the brake disc. At this time, since the cylindrical block 4 is still rotating as a whole, the rubber film 6 rotating and contacting the brake disc will be rubbed out of the hole, so that the water inside the cylindrical block 4 is discharged through the hole, and at the same time, the rigid spring 12 will pull the block 13 completely out of the square groove 7, so that the connecting rod 1 cannot drive the block 13 to rotate with the first convex disc 3 and the cylindrical block 4 through the square groove 7, so that the cylindrical block 4 will stop rotating as a whole, thereby achieving the purpose of preventing the cylindrical block 4 from continuing to rotate and damaging the brake disc when the abrasive block 5 is worn away.

[0040] When the abrasive block 5 on the cylindrical block 4 is grinding the brake disc, the stable circulating cooling water supply mechanism can circulate the cooling water into the cylindrical block 4 to cool the abrasive block 5. When the temperature of the abrasive block 5 is too high and the cooling water cannot cool it down, the cooling water inside the cylindrical block 4 will generate water vapor due to the high temperature. As the water vapor inside the cylindrical block 4 gradually increases, the water vapor squeezes the block 13 out of the first square hole 8, and the block 13 stretches the rigid spring 12, so that the block 13 moves to open the side port 2, so that the water vapor inside the cylindrical block 4 is discharged through the side port 2. At the same time, the connecting rod 1 will not be able to drive the first convex disk 3 and the cylindrical block 4 to rotate through the square groove 7 and the block 13, and the block 13 can only drive the second convex disk 11 to rotate along the inner wall of the fixed block 10 through the rigid spring 12, thereby achieving the purpose of the abrasive block 5 not continuing to grind the brake disc at high temperature.

[0041] On the basis of the above-mentioned embodiment, the stable circulating cooling water delivery mechanism comprises a stable water delivery component and a circulating cooling water component;

[0042] Among them, the stable water supply component includes a transparent box 24 fixedly connected to the cylindrical block 4, the number of the transparent boxes 24 is two, the interiors of the two transparent boxes 24 are respectively movably connected with rotating blades 25, one end of the rotating blade 25 is fixed with a rotating wheel 26 located outside the transparent box 24, the number of the rotating wheels 26 is two, the two rotating wheels 26 are connected by a transmission belt 27, the upper ends of the two transparent boxes 24 are fixedly connected with a connecting pipe 28, and the connecting pipe 28 is connected to the circulating cooling water component.

[0043] Through the design of the rotating wheel 26 and the transmission belt 27, when the circulating cooling water assembly introduces cooling water into the transparent box 24 and the cylindrical block 4 through a connecting pipe 28, the cooling water pushes the rotating blade 25 to rotate, and then the rotating blade 25 drives another rotating blade 25 to rotate synchronously through the rotating wheel 26 and the transmission belt 27, so that the other rotating blade 25 rotates to discharge the water inside the other transparent box 24 and the cylindrical block 4 through another connecting pipe 28 into the circulating cooling water assembly, so that the water inside the cylindrical block 4 is relatively stable within a certain value, avoiding excessive or insufficient cooling water inside the cylindrical block 4, so that the block 13 is out of contact with the square groove 7 and the first square hole 8.

[0044] The circulating cooling water assembly includes mounting blocks 32 fixed on both sides of the bottom of the driving motor 15. A fixed steel pipe 31 is fixed to the bottom of the mounting block 32. There are two fixed steel pipes 31. The two fixed steel pipes 31 are connected to the external cooling water delivery equipment through a hose. The lower ends of the two fixed steel pipes 31 are fixedly connected to a partition cavity block 30. The interior of the partition cavity block 30 is movably sleeved with a sleeve ring 29. There are two sleeve rings 29. The two sleeve rings 29 are fixedly connected to the connecting pipe 28 respectively.

[0045] When the abrasive block 5 is grinding the brake disc, at this time, since the driving motor 15 fixes the partition chamber block 30 through the mounting block 32 and the fixed steel pipe 31, the cylindrical block 4 driven by the driving motor 15 drives the two sleeve rings 29 to rotate along the inner wall of the partition chamber block 30 through the transparent box 24 and the connecting pipe 28. At this time, the external cooling water conveying equipment can introduce the cooling water into the rotating blade 25 and the cylindrical block 4 through the fixed steel pipe 31 and the partition chamber block 30 and the connecting pipe 28, so that the cooling water inside the cylindrical block 4 cools down the abrasive block 5. At the same time, the water inside the other rotating blade 25 will be re-introduced into the cooling water conveying equipment through the connecting pipe 28, the partition chamber block 30 and the fixed steel pipe 31 for cooling. In this way, the cyclic operation achieves the purpose of cyclic cooling and cooling the abrasive block 5.

[0046] On the basis of the above embodiment, a round rod 22 is movably sleeved inside the block 13 , and a round block 23 is fixed to the lower end of the round rod 22 .

[0047] When there is no cooling water inside the cylindrical block 4 and the rigid spring 12 pulls the block 13 out of the square groove 7, the round rod 22 is moved upward at this time, so that the round block 23 pulls the block 13 to move and contact the first square hole 8 and the inner wall of the square groove 7, and then the water source is added to the cylindrical block 4 through the cooling water conveying equipment until the cylindrical block 4 is filled with cooling water, and then the transparent box 24 is closed by rotating the rotating blades 25, so that the water inside the cylindrical block 4 cannot be discharged, and then the block 13 is loosened by moving the round block 23, so that the water inside the cylindrical block 4 supports the block 13, so that the rigid spring 12 cannot pull the block 13 to reset, and then the water inlet and outlet of the cylindrical block 4 is stabilized at a certain amount by stabilizing the water delivery component, so that the water inside the cylindrical block 4 circulates and always supports the block 13.

[0048] A moving block 21 is fixed on the top of the round rod 22 , and one end of the moving block 21 passes through the side opening 2 and is movably connected to a circular ring block 20 .

[0049] When the annular block 20 moves upward along the outer surface of the connecting rod 1 , the annular block 20 pulls the round rod 22 to move upward through the moving block 21 , thereby achieving the purpose of moving the round rod 22 .

[0050] A connecting block 19 is provided at the right end of the annular block 20, a threaded rod 18 is sleeved on the upper limit of the connecting block 19, a side block 16 is sleeved on the outer surface of the upper end of the threaded rod 18, the side surface of the side block 16 is fixedly connected to the outer surface of the connecting rod 1, and a rotating block 17 is fixed on the upper end of the threaded rod 18.

[0051] By rotating the rotating block 17 , the threaded rod 18 is caused to move upward in a spiral along the inner wall of the side block 16 , and then the threaded rod 18 drives the annular block 20 to move upward through the connecting block 19 .

[0052] The inner wall of the side opening 2 is provided with scale marks 34 .

[0053] Through the design of the scale 34, the operator can judge the position of the block 13 driven by the moving block 21 through the round rod 22 and the round block 23 through the scale 34 and the circular ring block 20, so that the block 13 can better and more accurately contact the inner wall of the first square hole 8 and the square groove 7.

[0054] On the basis of the above embodiment, an air leakage notch 33 is provided on the inner wall of the rear end of the block 13 , and the air leakage notch 33 is located at the lower end of the block 13 .

[0055] Through the design of the air leakage gap 33, when the cooling water inside the cylindrical block 4 generates a small amount of water vapor due to the low temperature, the small amount of water vapor will squeeze the block 13 to move upward, so that the side port 2 corresponds to the air leakage gap 33, and then a small amount of water vapor will be discharged through the air leakage gap 33 and the side port 2, but at this time the block 13 has not broken away from the contact between the square groove 7 and the first square hole 8, so that the connecting rod 1 can continue to drive the first convex disk 3 and the cylindrical block 4 to rotate through the square groove 7, the block 13 and the first square hole 8, so that the cylindrical block 4 can continue to drive the abrasive block 5 to grind the brake disc, when the cooling water inside the cylindrical block 4 generates a large amount of water vapor due to the high temperature, at this time a large amount of water vapor cannot be completely discharged through the air leakage gap 33, so that a large amount of water vapor will further squeeze the block 13 to break away from the first square hole 8 and open the side port 2, so that the water vapor can be quickly discharged through the side port 2, and then the connecting rod 1 cannot continue to drive the first convex disk 3 and the cylindrical block 4 to rotate through the square groove 7 and the block 13.

[0056] The grinding method of the brake disc grinding device comprises the following steps:

[0057] S1, firstly, by starting the driving motor 15, the rotating rod 14 drives the connecting rod 1 to rotate, and then the connecting rod 1 drives the first convex disc 3 and the cylindrical block 4 to rotate through the square groove 7, the square block 13 and the first square hole 8, so that the cylindrical block 4 drives the abrasive block 5 to grind the brake disc;

[0058] S2, the external cooling water delivery equipment delivers cooling water to the inside of the cylindrical block 4 in a stable circulation through the stable circulating cooling water delivery mechanism, so that the cooling water cools the abrasive block 5, thereby achieving the purpose of circulating cooling and cooling the abrasive block 5, and avoiding pollution caused by contact between the cooling water and the outside world;

[0059] S3. When the abrasive block 5 is gradually worn away, the rigid spring 12 pulls the block 13 to compress the cooling water inside the cylindrical block 4, so that the cooling water inside the cylindrical block 4 squeezes the rubber film 6 to contact the brake disc. At this time, since the cylindrical block 4 is still rotating as a whole, the rubber film 6 that is rotating and in contact with the brake disc will be rubbed out of the hole, so that the water inside the cylindrical block 4 is discharged through the hole. At the same time, the rigid spring 12 will pull the block 13 completely out of the square groove 7, so that the cylindrical block 4 will stop rotating as a whole, thereby achieving the purpose of preventing the cylindrical block 4 from continuing to rotate and damaging the brake disc when the abrasive block 5 is worn away.

[0060] S4. When the temperature of the abrasive block 5 is too high and the cooling water cannot cool it down, the cooling water inside the cylindrical block 4 will generate water vapor due to the high temperature. As the water vapor inside the cylindrical block 4 gradually increases, the water vapor squeezes the block 13 out of the first square hole 8, and the block 13 stretches the rigid spring 12, so that the block 13 moves to open the side port 2, so that the water vapor inside the cylindrical block 4 is discharged through the side port 2. At the same time, the connecting rod 1 will not be able to drive the first convex disk 3 and the cylindrical block 4 to rotate, thereby achieving the purpose of preventing the abrasive block 5 from continuing to grind the brake disk at high temperature.

[0061] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A brake disc grinding device, comprising a connecting rod (1) and a drive motor (15), characterized in that: A first convex disk (3) is movably sleeved inside the lower end of the connecting rod (1); a cylindrical block (4) filled with cooling water is fixed to the bottom of the first convex disk (3); the top of the cylindrical block (4) is movably connected to the bottom of the connecting rod (1); an abrasive block (5) is fixed to the bottom of the cylindrical block (4); a rubber film (6) in contact with the abrasive block (5) is fixed inside the lower end of the cylindrical block (4); a stable circulating cooling water supply mechanism is installed on the cylindrical block (4); a square groove (7) is provided inside the connecting rod (1); a side opening (2) is provided on the left side inside the connecting rod (1); a first square hole (8) connected to the square groove (7) is provided inside the first convex disk (3); ), a second square hole (9) communicating with the first square hole (8) is provided inside the cylindrical block (4), a square block (13) is movably sleeved inside the first square hole (8), the upper end of the square block (13) is movably sleeved with the inner wall of the square groove (7), a fixed block (10) is fixed inside the cylindrical block (4), a second convex disk (11) is movably sleeved inside the fixed block (10), a rigid spring (12) is fixed on the top of the second convex disk (11), the upper end of the rigid spring (12) is fixedly connected to the square block (13), a rotating rod (14) is transmission-connected to the upper end of the driving motor (15), and the lower end of the rotating rod (14) is fixedly connected to the connecting rod (1).

2. The brake disc grinding device according to claim 1, characterized in that: The stable circulating cooling water delivery mechanism comprises a stable water delivery component and a circulating cooling water component; The stable water delivery component comprises a transparent box (24) fixedly connected to the cylindrical block (4), the number of the transparent boxes (24) being two, the interiors of the two transparent boxes (24) being movably sleeved with rotating blades (25), one end of the rotating blade (25) being fixed with a rotating wheel (26) located outside the transparent box (24), the number of the rotating wheels (26) being two, the two rotating wheels (26) being connected by a transmission belt (27), the upper ends of the two transparent boxes (24) being fixedly connected with a connecting pipe (28), the connecting pipe (28) being connected to the circulating cooling water component.

3. The brake disc grinding device according to claim 2, characterized in that: The circulating cooling water assembly comprises a mounting block (32) fixed to both sides of the bottom of the driving motor (15); a fixed steel pipe (31) is fixed to the bottom of the mounting block (32); the number of the fixed steel pipes (31) is two; the two fixed steel pipes (31) are connected to an external cooling water delivery device via a hose; the lower ends of the two fixed steel pipes (31) are fixedly connected to a partition cavity block (30); the interior of the partition cavity block (30) is movably sleeved with a sleeve ring (29); the number of the sleeve rings (29) is two; the two sleeve rings (29) are fixedly connected to a connecting pipe (28) respectively.

4. The brake disc grinding device according to claim 1, characterized in that: A round rod (22) is movably sleeved inside the square block (13), and a round block (23) is fixed to the lower end of the round rod (22).

5. The brake disc grinding device according to claim 4, characterized in that: A moving block (21) is fixed to the top of the round rod (22), and one end of the moving block (21) passes through the side opening (2) and is movably connected to a circular ring block (20).

6. The brake disc grinding device according to claim 5, characterized in that: The right end of the annular block (20) is provided with a connecting block (19), the upper limit position of the connecting block (19) is sleeved with a threaded rod (18), the outer surface of the upper end of the threaded rod (18) is sleeved with a side block (16) in a threaded manner, the side surface of the side block (16) is fixedly connected to the outer surface of the connecting rod (1), and the upper end of the threaded rod (18) is fixed with a rotating block (17).

7. The brake disc grinding device according to claim 1, characterized in that: The inner wall of the side opening (2) is provided with scale markings (34).

8. The brake disc grinding device according to claim 1, characterized in that: An air leakage notch (33) is provided on the inner wall at the rear end of the block (13), and the air leakage notch (33) is located at the lower end of the block (13).

9. The grinding method of the brake disc grinding device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. First, the driving motor (15) is started, so that the rotating rod (14) drives the connecting rod (1) to rotate, and then the connecting rod (1) drives the first convex disc (3) and the cylindrical block (4) to rotate through the square groove (7) and the square block (13) and the first square hole (8), so that the cylindrical block (4) drives the abrasive block (5) to grind the brake disc; S2, the external cooling water delivery device delivers cooling water to the inside of the cylindrical block (4) in a stable circulation through the stable circulating cooling water delivery mechanism, so that the cooling water cools the abrasive block (5), thereby achieving the purpose of circulating cooling and cooling the abrasive block (5) and avoiding pollution caused by contact between the cooling water and the outside world; S3. When the abrasive block (5) is gradually worn away, the rigid spring (12) pulls the square block (13) to compress the cooling water inside the cylindrical block (4), thereby causing the cooling water inside the cylindrical block (4) to squeeze the rubber film (6) and contact the brake disc. At this time, since the cylindrical block (4) is still rotating as a whole, the rubber film (6) that is rotating and contacting the brake disc will be rubbed out of a hole, thereby causing the water inside the cylindrical block (4) to be discharged through the hole. At the same time, the rigid spring (12) will pull the square block (13) completely out of the square groove (7), thereby causing the cylindrical block (4) to stop rotating as a whole, thereby achieving the purpose of preventing the cylindrical block (4) from continuing to rotate and damaging the brake disc when the abrasive block (5) is worn away. S4. When the temperature of the abrasive block (5) is too high and the cooling water cannot cool it down, the cooling water inside the cylindrical block (4) will generate water vapor due to the high temperature. As the water vapor inside the cylindrical block (4) gradually increases, the water vapor squeezes the block (13) out of the first square hole (8), and causes the block (13) to stretch the rigid spring (12), thereby causing the block (13) to move and open the side port (2), so that the water vapor inside the cylindrical block (4) is discharged through the side port (2). At the same time, the connecting rod (1) will not be able to drive the first convex disk (3) and the cylindrical block (4) to rotate, thereby achieving the purpose of preventing the abrasive block (5) from continuing to grind the brake disk at high temperature.

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