Split type brake disc and machining process thereof

Abstract

The invention relates to the technical field of brake discs, in particular to a split type brake disc and a machining process thereof, and solves the problems that a center disc of a brake disc is connected with a brake pad through rivets, the center disc needs to be replaced when the brake pad is replaced, the maintenance cost is high, the consumed time is long, the center disc is prone to rusting, and the service life is affected. The split type brake disc comprises a center disc, a brake pad is installed below the center disc, a protective coating is attached to the outer side of the brake pad, the brake pad comprises an installation ring, and the top end of the installation ring is inserted into the inner side of the bottom end of the center disc. A plurality of positioning holes are formed in the outer side of the top end of the mounting ring and the outer side of the bottom end of the center disc in a circular array mode, and connecting rivets are inserted into the inner sides of the positioning holes in a penetrating mode. When the brake disc is damaged, only the brake pad needs to be independently replaced, a center disc part of the brake disc does not need to be replaced, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of brake discs, in particular to a split brake disc and a processing technology thereof. BACKGROUND

[0002] Brakes are brake devices for braking and emergency braking of automobiles, and brakes can be divided into disc brakes and drum brakes. Drum brakes are sealed and shaped like drums, and are also known as brake pots in China. When driving, the drum brake rotates, and two arc-shaped or semicircular brake shoes are fixed in the drum brake. When the brake is pressed, the two brake shoes are expanded under the action of the brake cylinder, and the brake shoes rub against the inner wall of the brake drum to achieve the effect of speed reduction or parking.

[0003] Disc brakes generate braking force by clamping brake discs with brake calipers. When the brake is pressed, the disc brake clamps the brake disc to achieve the effect of speed reduction or parking. Disc brakes have better heat dissipation than drum brakes, and are less likely to produce thermal decay under high-speed braking conditions. Therefore, disc brakes have good high-speed braking effect. Disc brakes are mainly composed of brake calipers and brake discs. The brake disc is a circular disc and is the key to braking.

[0004] The center disc of the brake disc and the brake pad are connected by rivets. When the brake pad is replaced, the center disc also needs to be replaced, which is time-consuming and costly to maintain. In addition, it is easy to rust and affects the service life. Therefore, it does not meet the current needs. To this end, we propose a split brake disc and a processing technology thereof. SUMMARY

[0005] The present application relates to the technical field of brake discs, in particular to a split brake disc and a processing technology thereof.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a split brake disc, comprising a center disc, a brake pad is installed below the center disc, and a protective coating is attached to the outer side of the brake pad.

[0007] The brake pad comprises a mounting ring, the top end of the mounting ring is inserted into the inner side of the bottom end of the center disc, the outer side of the top end of the mounting ring and the outer side of the bottom end of the center disc are both circularly arrayed with a plurality of positioning holes, the inner side of the positioning holes is penetrated by a connecting rivet, the mounting ring is connected and fixed with the center disc through the connecting rivet, the outer side of the mounting ring is provided with four assembly pieces, the lower side of the mounting ring is detachably provided with a connecting ring, the bottom of the mounting ring is provided with four insertion through grooves, the upper surface of the connecting ring is fixed with four butt joint blocks, the four butt joint blocks are respectively inserted into the inner side of the four insertion through grooves, the inner side of the assembly piece is provided with an anti-falling insertion groove which is opened on the inner wall of the insertion through groove, the inner side of the assembly piece is fixed with an insertion strip, and the insertion strip is inserted into the anti-falling insertion groove and penetrates through the butt joint block.

[0008] Preferably, the composition of the protective coating comprises organosilicon compound, polyamide resin, aluminum tripolyphosphate, zinc alloy powder, barium borate and organic solvent.

[0009] Preferably, the weight ratio of the protective coating is as follows: organosilicon compound 11%-12%, polyamide resin 15%-18%, aluminum tripolyphosphate 4%-6%, zinc alloy powder 0.8%-1%, barium borate 0.5%-0.8%, and the remaining weight is the weight of organic solvent, which is selected and purchased in the market.

[0010] Preferably, the insertion strip comprises a fixed block, an intermediate connecting block and two anti-falling insertion blocks, one end of the fixed block is fixed with the inner side surface of the assembly piece, the intermediate connecting block is fixed at the other end of the fixed block, and the two anti-falling insertion blocks are fixed at the other end of the intermediate connecting block.

[0011] Preferably, the outer side surface of the two anti-falling insertion blocks is respectively provided with an anti-falling strip, one side edge of the anti-falling strip is a quarter of a circular arc, the inner surface of the anti-falling insertion groove is provided with an anti-falling groove, and the anti-falling strip is clamped in the anti-falling groove.

[0012] Preferably, the connecting end of the fixed block and the intermediate connecting block and the intermediate connecting block and the anti-falling insertion block are all provided with V-shaped positioning grooves, and the fixed block and the intermediate connecting block and the intermediate connecting block and the anti-falling insertion block are all fixed by welding.

[0013] Preferably, rivet outer side gaskets and rivet inner side gaskets are respectively arranged between the two ends of the connecting rivet and the center disc and the brake pad, the rivet inner side gasket is in contact with the inner wall of the brake pad, the rivet outer side gasket is in contact with the outer wall of the center disc, and the end of the rivet inner side gasket towards the brake pad and the end of the rivet outer side gasket towards the center disc are respectively provided with a first arc surface and a second arc surface.

[0014] A processing technology of a split type brake disc, the processing technology comprises the following steps:

[0015] S1: The center plate is prepared by using silicon carbide aluminum composite material, the silicon carbide aluminum composite material is subjected to electromagnetic stirring fusion reaction during preparation, then the raw material after processing is subjected to low-pressure casting process and T6 aging heat treatment, a center plate blank is obtained, then the center plate blank is subjected to positioning hole drilling processing, and the processed center plate is subjected to rough machining and then fine machining, and finally a finished center plate is obtained;

[0016] S2: The HT250 gray cast iron is used as a raw material, and the HT250 gray cast iron is subjected to milling processing, so that the mounting ring and the assembly piece blank are obtained, then the mounting ring top end is subjected to positioning hole drilling and the bottom plug-in slot milling processing, then the assembly piece and the mounting ring blank are subjected to heat treatment, and after the heat treatment is completed, the assembly piece and the mounting ring are subjected to roughing, and after the roughing, the assembly piece and the mounting ring are subjected to fine machining;

[0017] S3: After the assembly piece and the mounting ring are prepared, the assembly piece and the mounting ring are immersed in a protective coating stock solution on the outside, a layer of protective coating is formed on the outside of the assembly piece and the mounting ring, and the assembly piece and the mounting ring with the attached protective coating are subjected to drying treatment, the drying time is 3-4h, and the drying temperature is controlled at 150-200 degrees Celsius;

[0018] S4: After the assembly piece and the mounting ring are dried, the assembly piece and the mounting ring are polished, then the plug-in strip is welded on the inner wall of the assembly piece, and the butt joint block is welded on the upper surface of the connecting ring;

[0019] S5: Finally, the connecting ring is mounted at the bottom end of the mounting ring, and the butt joint block is clamped in the plug-in slot, the assembly piece is attached to the mounting ring, in this process, the plug-in strip is inserted into the anti-escape plug-in slot and passes through the butt joint block, and the two anti-escape plug-in blocks are bent towards each other due to the contact with the inner wall of the anti-escape plug-in slot until the assembly piece and the mounting ring are completely attached, at this time, the anti-escape strip on the outer surface of the anti-escape plug-in block is clamped into the inner wall of the anti-escape plug-in slot, and finally the mounting ring and the center plate are riveted and fixed by using connecting rivets on a riveting machine, and the assembly of the entire brake disc is completed.

[0020] 1、The knife edge with a material harder than the fixed block, the intermediate connecting block and the anti-escape plug-in block is inserted into the plug-in slot from the opening of the plug-in slot on the upper surface of the mounting ring, and is aligned with the V-shaped positioning slot at the connecting position of the fixed block, the intermediate connecting block and the anti-escape plug-in block, then the knife edge is knocked to cut off the connecting position of the fixed block, the intermediate connecting block and the anti-escape plug-in block, so that the fixed block, the intermediate connecting block and the anti-escape plug-in block are separated from each other, after the separation, the assembly piece can be disassembled from the mounting ring, the worn assembly piece can be replaced without replacing the entire brake disc, and the maintenance cost is reduced.

[0021] 2. This invention provides a protective coating on the outer surface of the assembly piece and mounting ring, consisting of organosilicon compounds, polyamide resin, aluminum tripolyphosphate, zinc alloy powder, barium borate, and organic solvents. This coating enhances the corrosion resistance of the components, prevents rusting, and extends their service life. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the connecting rivet structure of the present invention;

[0024] Figure 3 This is an exploded view of the central disc and brake pads of the present invention;

[0025] Figure 4 This is a cross-sectional view of the connecting rivet of the present invention;

[0026] Figure 5 This is a schematic diagram of the brake pad structure of the present invention;

[0027] Figure 6 This is a cross-sectional view of the mounting ring of the present invention;

[0028] Figure 7 for Figure 6 Enlarged view of the structure at point A in the middle;

[0029] Figure 8 This is a schematic diagram of the structure of the connector strip and the mating block of the present invention.

[0030] In the diagram: 1. Center disc; 2. Brake pad; 21. Assembly piece; 22. Mounting ring; 23. Insertion slot; 24. Connecting ring; 25. Insertion strip; 251. Fixing block; 252. Intermediate connecting block; 253. Anti-detachment insertion block; 254. Anti-detachment strip; 255. V-shaped positioning groove; 26. Butt joint block; 27. Anti-detachment insertion groove; 3. Connecting rivet; 4. Rivet inner washer; 5. Rivet outer washer; 6. Positioning hole; 7. First arc surface; 8. Second arc surface; 9. Protective coating. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] like Figure 1 and Figure 3 As shown, a split brake disc includes a center disc 1, a brake pad 2 is mounted below the center disc 1, and a protective coating 9 is attached to the outer side of the brake pad 2.

[0033] The protective coating 9 consists of silicone compounds, polyamide resin, aluminum tripolyphosphate, zinc alloy powder, barium borate, and organic solvents. The silicone compounds are 11%–12%, the polyamide resin is 15%–18%, the aluminum tripolyphosphate is 4%–6%, the zinc alloy powder is 0.8%–1%, the barium borate is 0.5%–0.8%, and the remaining weight is the weight of the organic solvents. The organic solvents are purchased from the market to increase the corrosion resistance of the components, prevent the components from rusting, and extend the service life of the components.

[0034] like Figure 1 , Figure 2 and Figure 4 As shown, an outer rivet washer 5 and an inner rivet washer 4 are respectively installed between the two ends of the connecting rivet 3 and the center disc 1 and the brake pad 2. The inner rivet washer 4 contacts the inner wall of the brake pad 2, and the outer rivet washer 5 contacts the outer wall of the center disc 1. The end of the inner rivet washer 4 facing the brake pad 2 and the end of the outer rivet washer 5 facing the center disc 1 are respectively provided with a first arc surface 7 and a second arc surface 8. The inner rivet washer 4 and the outer rivet washer 5 with the first arc surface 7 and the second arc surface 8 provide support between the connecting rivet 3 and the brake pad 2 and the center disc 1, reducing the pressure on the center disc 1 and the brake pad 2 when the connecting rivet 3 is riveted, and ensuring that the center disc 1 and the brake pad 2 will not be damaged due to the direct compression of the connecting rivet 3.

[0035] like Figures 5 to 8 As shown, the brake pad 2 includes a mounting ring 22. The top end of the mounting ring 22 is inserted into the inner side of the bottom end of the center disc 1. Multiple positioning holes 6 are arranged in a circular array on the outer side of the top end of the mounting ring 22 and the outer side of the bottom end of the center disc 1. Connecting rivets 3 are inserted into the inner side of the positioning holes 6. The mounting ring 22 and the center disc 1 are connected and fixed by the connecting rivets 3. Four assembly pieces 21 are provided on the outer side of the mounting ring 22. A connecting ring 24 is detachably installed below the mounting ring 22. The bottom of the mounting ring 22 has four insertion slots 23. The connecting ring 24... Four mating blocks 26 are fixed on the upper surface. The four mating blocks 26 are respectively inserted into the inner side of the four insertion slots 23. The inner wall of the insertion slot 23 on the inner side of the assembly piece 21 is provided with an anti-detachment insertion slot 27. An insertion strip 25 is fixed on the inner side of the assembly piece 21. The insertion strip 25 is inserted into the anti-detachment insertion slot 27 and passes through the mating block 26. The assembly piece 21 and the mounting ring 22 are assembled by using the mating block 26 to be inserted into the insertion slot 23 and then the insertion strip 25 to be inserted into the anti-detachment insertion slot 27 and passes through the mating block 26.

[0036] The connector strip 25 includes a fixing block 251, an intermediate connecting block 252, and two anti-detachment connector blocks 253. One end of the fixing block 251 is fixed to the inner surface of the assembly piece 21, the intermediate connecting block 252 is fixed to the other end of the fixing block 251, and the two anti-detachment connector blocks 253 are fixed to the other end of the intermediate connecting block 252. The outer surfaces of the two anti-detachment connector blocks 253 are provided with anti-detachment strips, one side of which is a quarter-circle arc. The inner surface of the anti-detachment connector groove 27 is provided with an anti-detachment groove, and the anti-detachment strip 254 is engaged in the anti-detachment groove. By using the anti-detachment strip 254 on the outer surface of the anti-detachment connector block 253 to engage in the inner wall of the anti-detachment connector groove 27, the connection strength between the connector strip 25 and the mounting ring 22 is increased, so that when the mounting ring 22 rotates with the center disc 1, the assembly piece 21 will not separate from the mounting ring 22, ensuring the safety of the brake disc during use.

[0037] The connecting ends of the fixed block 251 and the intermediate connecting block 252, and the intermediate connecting block 252 and the anti-detachment plug 253 are all provided with V-shaped positioning grooves 255. The fixed block 251 and the intermediate connecting block 252, and the intermediate connecting block 252 and the anti-detachment plug 253 are all fixed by welding. A blade with a hardness higher than that of the fixed block 251, the intermediate connecting block 252, and the anti-detachment plug 253 is inserted into the inner side of the V-shaped positioning groove 255. Then, the blade is struck to separate the fixed block 251, the intermediate connecting block 252, and the anti-detachment plug 253 from each other. After separation, the assembly piece 21 can be disassembled from the mounting ring 22, which facilitates the replacement of the worn assembly piece 21.

[0038] Working principle: Install the connecting ring 24 at the bottom of the mounting ring 22, ensuring that the mating block 26 is engaged in the insertion slot 23. Fit the assembly piece 21 against the mounting ring 22. During this process, the insertion strip 25 will insert into the anti-detachment insertion slot 27 and pass through the mating block 26. The two anti-detachment insertion blocks 253 will bend towards each other due to contact with the inner wall of the anti-detachment insertion slot 27 until the assembly piece 21 and the mounting ring 22 are completely fitted. At this point, the anti-detachment strip 254 on the outer surface of the anti-detachment insertion block 253 will be engaged in the inner wall of the anti-detachment insertion slot 27. Finally, rivet the mounting ring 22 and the center disc 1 together on a riveting machine using connecting rivets 3, completing the assembly of the entire brake disc. Replace the assembly piece 21 when it is excessively worn or needs replacement, or when it is dislodged due to impact or knocking by stones. When cracks or damage appear, a blade with a hardness higher than that of the fixing block 251, intermediate connecting block 252, and anti-detachment plug 253 is inserted into the plug groove 23 opening on the upper surface of the mounting ring 22 and aligned with the V-shaped positioning groove 255 at the end connection of the fixing block 251, intermediate connecting block 252, and anti-detachment plug 253. Then, the blade is struck to cut off the connection of the fixing block 251, intermediate connecting block 252, and anti-detachment plug 253, so that the fixing block 251, intermediate connecting block 252, and anti-detachment plug 253 are separated from each other. After separation, the assembly piece 21 can be disassembled from the mounting ring 22, which facilitates the replacement of the worn assembly piece 21 without replacing the entire brake disc, thus reducing maintenance costs.

[0039] A manufacturing process for a split brake disc, comprising the following steps:

[0040] S1: The center disk 1 is prepared using silicon carbide aluminum composite material. During the preparation, the silicon carbide aluminum composite material is subjected to electromagnetic stirring and fusion reaction. Then, the raw material is processed by low-pressure casting process and T6 aging heat treatment to obtain the center disk 1 blank. Subsequently, the center disk 1 blank is drilled with positioning holes 6. The processed center disk 1 is first roughed and then finely machined to obtain the finished center disk 1.

[0041] S2: Using HT 250 gray cast iron as raw material, the HT 250 gray cast iron is milled to obtain the blanks of mounting ring 22 and assembly piece 21. Then, the top of the mounting ring 22 is drilled with positioning hole 6 and the bottom is milled with insertion slot 23. Then, the blanks of assembly piece 21 and mounting ring 22 are heat treated. After the heat treatment is completed, the assembly piece 21 and mounting ring 22 are roughed and then finished.

[0042] S3: After the assembly piece 21 and mounting ring 22 are prepared, the outer side of the assembly piece 21 and mounting ring 22 is immersed in the original solution of the protective coating 9 to form a protective coating 9 on the outside of the assembly piece 21 and mounting ring 22. The assembly piece 21 and mounting ring 22 with the protective coating 9 attached are then dried for 3-4 hours at a temperature of 150-200 degrees Celsius.

[0043] S4: After the assembly piece 21 and the mounting ring 22 are dried, the assembly piece 21 and the mounting ring 22 are ground and polished. Next, the insertion strip 25 is welded to the inner wall of the assembly piece 21, and the mating block 26 is welded to the upper surface of the connecting ring 24.

[0044] S5: Finally, install the connecting ring 24 at the bottom of the mounting ring 22 and ensure that the mating block 26 is engaged in the insertion slot 23. Fit the assembly piece 21 with the mounting ring 22. During this process, the insertion strip 25 will be inserted into the anti-detachment insertion slot 27 and pass through the mating block 26. The two anti-detachment insertion blocks 253 will bend towards each other due to contact with the inner wall of the anti-detachment insertion slot 27 until the assembly piece 21 and the mounting ring 22 are completely fitted together. At this time, the anti-detachment strip 254 on the outer surface of the anti-detachment insertion block 253 will be engaged in the inner wall of the anti-detachment insertion slot 27. Finally, the mounting ring 22 and the center disc 1 are riveted and fixed on the riveting machine using connecting rivets 3 to complete the assembly of the entire brake disc.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A split-type brake disc, comprising a center disc (1), characterized in that: A brake pad (2) is installed below the center disc (1), and a protective coating (9) is attached to the outer side of the brake pad (2); The brake pad (2) includes a mounting ring (22), the top end of which is inserted into the inner side of the bottom end of the center disc (1). Multiple positioning holes (6) are arranged in a circular array on the outer side of the top end of the mounting ring (22) and the outer side of the bottom end of the center disc (1). Connecting rivets (3) are inserted into the inner side of the positioning holes (6). The mounting ring (22) is connected and fixed to the center disc (1) by the connecting rivets (3). Four assembly pieces (21) are provided on the outer side of the mounting ring (22). A detachable mounting plate is located below the mounting ring (22). The mounting ring (22) is equipped with a connecting ring (24). The bottom of the mounting ring (22) is provided with four insertion slots (23). Four docking blocks (26) are fixed on the upper surface of the connecting ring (24). The four docking blocks (26) are respectively inserted into the four insertion slots (23). The inner wall of the insertion slot (23) on the inner side of the assembly piece (21) is provided with an anti-detachment insertion slot (27). An insertion strip (25) is fixed on the inner side of the assembly piece (21). The insertion strip (25) is inserted into the anti-detachment insertion slot (27) and passes through the docking block (26).

2. A split-type brake disc according to claim 1, characterized in that: The protective coating (9) consists of organosilicon compounds, polyamide resin, aluminum tripolyphosphate, zinc alloy powder, barium borate, and organic solvents.

3. A split-type brake disc according to claim 2, characterized in that: The weight ratio of the protective coating (9) is as follows: 11% to 12% silicone compound, 15% to 18% polyamide resin, 4% to 6% aluminum tripolyphosphate, 0.8% to 1% zinc alloy powder, 0.5% to 0.8% barium borate, and the remaining weight is the weight of organic solvent, which can be purchased from the market.

4. A split-type brake disc according to claim 1, characterized in that: The connector strip (25) includes a fixing block (251), an intermediate connecting block (252), and two anti-detachment connector blocks (253). One end of the fixing block (251) is fixed to the inner surface of the assembly piece (21), the intermediate connecting block (252) is fixed to the other end of the fixing block (251), and the two anti-detachment connector blocks (253) are fixed to the other end of the intermediate connecting block (252).

5. A split-type brake disc according to claim 4, characterized in that: The outer surfaces of the two anti-detachment plugs (253) are provided with anti-detachment strips, one side of which is a quarter-circle arc. The inner surface of the anti-detachment plug groove (27) is provided with an anti-detachment groove, and the anti-detachment strip (254) is engaged in the anti-detachment groove.

6. A split-type brake disc according to claim 5, characterized in that: The connection ends of the fixed block (251) and the intermediate connecting block (252), and the intermediate connecting block (252) and the anti-detachment plug-in block (253) are all provided with V-shaped positioning grooves (255). The fixed block (251) and the intermediate connecting block (252), and the intermediate connecting block (252) and the anti-detachment plug-in block (253) are all fixed by welding.

7. A split-type brake disc according to claim 1, characterized in that: The connecting rivet (3) is connected to the center disc (1) and the brake pad (2) by two separate rivet outer washer (5) and rivet inner washer (4). The rivet inner washer (4) is in contact with the inner wall of the brake pad (2), and the rivet outer washer (5) is in contact with the outer wall of the center disc (1). The end of the rivet inner washer (4) facing the brake pad (2) and the end of the rivet outer washer (5) facing the center disc (1) are respectively provided with a first arc surface (7) and a second arc surface (8).

8. The processing technology of a split brake disc according to any one of claims 1-7, characterized in that: The processing technology includes the following steps: S1: The center disk (1) is prepared using silicon carbide aluminum composite material. During the preparation, the silicon carbide aluminum composite material is subjected to electromagnetic stirring and fusion reaction. Then, the raw material is processed by low-pressure casting process and T6 aging heat treatment to obtain the center disk (1) blank. Subsequently, the center disk (1) blank is drilled with positioning holes (6). The processed center disk (1) is first roughed and then finely machined to obtain the finished center disk (1). S2: Using HT250 gray cast iron as raw material, the HT plug bar 250 gray cast iron is milled to obtain the blanks of the mounting ring (22) and the assembly piece (21). Then, the top of the mounting ring (22) is drilled with positioning holes (6) and the bottom is milled with plug slots (23). Then, the blanks of the assembly piece (21) and the mounting ring (22) are heat treated. After the heat treatment is completed, the assembly piece (21) and the mounting ring (22) are roughed. After roughing, the assembly piece (21) and the mounting ring (22) are precision machined. S3: After the assembly piece (21) and mounting ring (22) are prepared, the outer side of the assembly piece (21) and mounting ring (22) is immersed in the original solution of the protective coating (9) to form a protective coating (9) on the outside of the assembly piece (21) and mounting ring (22). The assembly piece (21) and mounting ring (22) with the protective coating (9) attached are then dried for 3-4 hours and the drying temperature is controlled at 150-200 degrees Celsius. S4: After the assembly piece (21) and mounting ring (22) are dried, the assembly piece (21) and mounting ring (22) are polished. Next, the plug strip (25) is welded to the inner wall of the assembly piece (21), and the mating block (26) is welded to the upper surface of the connecting ring (24). S5: Finally, install the connecting ring (24) at the bottom of the mounting ring (22) and ensure that the mating block (26) is engaged in the insertion slot (23). Fit the assembly piece (21) with the mounting ring (22). During this process, the insertion strip (25) will be inserted into the anti-detachment insertion slot (27) and pass through the mating block (26). The two anti-detachment insertion blocks (253) will bend towards each other due to contact with the inner wall of the anti-detachment insertion slot (27) until the assembly piece (21) and the mounting ring (22) are completely fitted. At this time, the anti-detachment strip (254) on the outer surface of the anti-detachment insertion block (253) will be engaged in the inner wall of the anti-detachment insertion slot (27). Finally, the mounting ring (22) and the center disc (1) are riveted and fixed on the riveting machine using connecting rivets (3) to complete the assembly of the entire brake disc.

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