A fixing device for brake disc machining and a machining method of brake disc

Abstract

The application provides a fixing device for brake disc machining and a machining method of a brake disc, wherein the brake disc comprises a first brake pad and a second brake pad arranged oppositely and a plurality of connecting columns connecting the first brake pad and the second brake pad, a first clamping groove and a second clamping groove are arranged between the first brake pad and the second brake pad, and the fixing device comprises a base plate, a first clamping part and a second clamping part, the first clamping part and the second clamping part are symmetrically arranged at two ends of the base plate, the brake disc is vertically installed on the base plate through cooperation of the first clamping part and the first clamping groove and cooperation of the second clamping part and the second clamping groove, and an axis of symmetry between the first brake pad and the second brake pad coincides with a center line between the first clamping part and the second clamping part. The first brake pad and the second brake pad are symmetrically installed on the base plate, so that the thickness difference of the first brake pad and the second brake pad can be ensured to be within a preset range.

Description

Technical Field

[0001] This invention relates to the field of brake disc processing technology, specifically to a fixing device for brake disc processing and a method for processing brake discs. Background Technology

[0002] Brake discs can rotate as the car moves. When it is necessary to slow down or stop, friction is applied to the brake discs to achieve deceleration and stopping. Therefore, brake discs are one of the most important parts of a car. During the manufacturing process of brake discs, the surface of the brake discs needs to be ground.

[0003] However, when the existing fixing device clamps the brake disc and then grinds it, there is a problem that the difference in wall thickness on both sides of the brake disc is too large, which affects the performance of the brake disc. Summary of the Invention

[0004] The problem solved by this invention is that after the existing fixing device clamps the brake disc and grinds it, there is an excessive difference in wall thickness on both sides of the brake disc.

[0005] To address the above problems, the present invention provides a fixing device for processing brake discs. The brake disc includes a first brake pad and a second brake pad disposed opposite to each other, and a plurality of connecting posts connecting the first brake pad and the second brake pad. A first clamping groove and a second clamping groove are provided between the first brake pad and the second brake pad. The fixing device includes:

[0006] substrate;

[0007] A first clamping part and a second clamping part are symmetrically disposed at both ends of the substrate. The brake disc is vertically mounted on the substrate by the first clamping part cooperating with the first clamping groove and the second clamping part cooperating with the second clamping groove. The axis of symmetry between the first brake pad and the second brake pad coincides with the center line between the first clamping part and the second clamping part.

[0008] Optionally, the first clamping part includes a first fixing post and a first snap-fit ​​member, and the second clamping part includes a second fixing post and a second snap-fit ​​member. The first fixing post and the second fixing post are symmetrically arranged at both ends of the substrate, and the center line between the first fixing post and the second fixing post coincides with the center line in the length direction of the substrate.

[0009] The first fixing post is provided with the first snap-fit ​​member, and the second fixing post is provided with the second snap-fit ​​member. The first snap-fit ​​member is snapped into the first clamping groove, and the second snap-fit ​​member is snapped into the second clamping groove so that the first brake pad and the second brake pad are symmetrically installed on both sides of the base plate.

[0010] Optionally, the first fixing post has a first protrusion on the side near the second fixing post, and the second fixing post has a second protrusion on the side near the first fixing post, and the center line between the first protrusion and the second protrusion coincides with the center line in the length direction of the substrate.

[0011] The first snap-fit ​​member is provided with a first groove, and the first groove snaps into the first protrusion so that the first snap-fit ​​member snaps into the first clamping groove;

[0012] The second snap-fit ​​member is provided with a second groove, which snaps into the second protrusion so that the second snap-fit ​​member snaps into the second clamping groove.

[0013] Optionally, the brake disc is fan-shaped, the first protrusion is arranged parallel to the base plate, and the first snap-fit ​​member is inclined relative to the first protrusion toward the brake disc.

[0014] Optionally, the first fixing post is provided with a first side and a second side on the side near the second fixing post. The second side is perpendicular to the base plate, and the first side is inclined relative to the second side toward the brake disc so as to abut against the first locking member when in contact with the first locking member.

[0015] Optionally, a first magnet is provided on the first side, and a second magnet is provided on the first snap-fit ​​member. The first magnet and the second magnet attract each other so that the first snap-fit ​​member snaps onto the first protrusion.

[0016] Optionally, a positioning hole is provided at the center of the brake disc, and the fixing device further includes:

[0017] The positioning post is located on the side of the substrate where the first clamping part is provided, and is located between the first clamping part and the second clamping part. The positioning hole is used to cooperate with the positioning hole so that the brake disc is installed on the fixing device.

[0018] The central plane formed by the center point of the positioning post, the center point of the first clamping part, and the center point of the second clamping part coincides with the axis of symmetry of the first brake pad and the second brake pad.

[0019] Optionally, the fixing device further includes:

[0020] A first support post is located on the side of the substrate where the first clamping part is provided, and is disposed between the first clamping part and the second clamping part. The height of the first support post is less than the height of the first clamping part.

[0021] The first support column has an inclined surface on the side that contacts the brake disc, which is adapted to the brake disc. The inclined surface abuts against the brake disc to support the brake disc.

[0022] This application embodiment also provides a method for processing a brake disc, applied to a fixing device for processing brake discs. The fixing device includes a base plate, a first clamping part, and a second clamping part, the first clamping part and the second clamping part being symmetrically disposed at both ends of the base plate. The processing method includes:

[0023] The brake disc is vertically mounted on the substrate by the first clamping part cooperating with the first clamping groove and the second clamping part cooperating with the second clamping groove, and the axis of symmetry between the first brake pad and the second brake pad coincides with the center line between the first clamping part and the second clamping part.

[0024] The first brake pad and the second brake pad are polished separately to make the thickness of the first brake pad the same as that of the second brake pad.

[0025] Optionally, the first clamping part includes a first fixing post and a first snap-fit ​​member, the second clamping part includes a second fixing post and a second snap-fit ​​member, and the fixing device further includes a positioning post disposed between the first clamping part and the second clamping part. The step of vertically mounting the brake disc onto the base plate by the first clamping part cooperating with the first clamping groove and the second clamping part cooperating with the second clamping groove includes:

[0026] The positioning hole of the brake disc is matched with the positioning post to install the brake disc on the fixing device;

[0027] The first snap-fit ​​component is snapped into the first clamping groove of the brake disc, and the second snap-fit ​​component is snapped into the second clamping groove of the brake disc, so that the first brake pad and the second brake pad are symmetrically installed on both sides of the base plate.

[0028] The fixing device for brake disc processing provided in this application embodiment includes a brake disc comprising a first brake pad and a second brake pad disposed opposite to each other, and a plurality of connecting posts connecting the first brake pad and the second brake pad. A first clamping groove and a second clamping groove are provided between the first brake pad and the second brake pad. The fixing device includes a base plate, a first clamping part and a second clamping part, which are symmetrically disposed at both ends of the base plate. The brake disc is vertically mounted on the base plate by the first clamping part cooperating with the first clamping groove and the second clamping part cooperating with the second clamping groove. The axis of symmetry between the first brake pad and the second brake pad coincides with the center line between the first clamping part and the second clamping part. By symmetrically mounting the first brake pad and the second brake pad of the brake disc on the base plate, when the first brake pad and the second brake pad are ground separately, the thickness difference between the first brake pad and the second brake pad can be ensured to be within a preset range by ensuring that the thickness of the ground parts is the same, thereby ensuring the performance of the brake disc. Attached Figure Description

[0029] Figure 1 A schematic diagram of the structure of the fixing device for brake disc processing provided in an embodiment of this application;

[0030] Figure 2 for Figure 1 The diagram shows the structure of the fixing device and the brake disc in conjunction.

[0031] Figure 3 for Figure 1 The front view of the fixing device in conjunction with the brake disc is shown.

[0032] Figure 4 for Figure 1 The front view of the fixing device shown;

[0033] Figure 5 for Figure 1 Top view of the fixing device shown;

[0034] Figure 6 A schematic flowchart illustrating the processing method of the brake disc provided in an embodiment of this application;

[0035] Figure 7 for Figure 6 The diagram shows the process of installing the brake disc in the machining method shown.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Fixing device; 11. Base plate; 12. First clamping part; 13. Second clamping part; 14. Positioning post; 15. First support post; 16. Second support post; 17. Fixing plate;

[0038] 2. Brake disc; 21. First brake pad; 22. Second brake pad; 23. First clamping groove; 24. Second clamping groove; 25. Connecting post; 26. Positioning hole;

[0039] 121. First fixing post; 122. First snap-fit ​​component; 123. First protrusion;

[0040] 131. Second fixing post; 132. Second snap-fit ​​component; 133. Second protrusion;

[0041] 1211. First side view; 1212. Second side view;

[0042] 1221, First groove; 1321, Second groove. Detailed Implementation

[0043] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below.

[0044] Please see Figures 1 to 3 , Figure 1 A schematic diagram of the structure of the fixing device for brake disc processing provided in an embodiment of this application; Figure 2 for Figure 1 The diagram shows the structure of the fixing device and the brake disc in conjunction. Figure 3 for Figure 1 The image shows a front view of the fixing device cooperating with the brake disc. This application provides a fixing device 1 for machining a brake disc 2. The brake disc 2 includes a first brake pad 21 and a second brake pad 22 disposed opposite to each other, and a plurality of connecting posts 25 connecting the first brake pad 21 and the second brake pad 22. A first clamping groove 23 and a second clamping groove 24 are provided between the first brake pad 21 and the second brake pad 22. The fixing device 1 includes a base plate 11, a first clamping part 12, and a second clamping part 13. The first clamping part 12 and the second clamping part 13 are symmetrically disposed at both ends of the base plate 11. The first clamping part 12 cooperates with the first clamping groove 23, and the second clamping part 13 cooperates with the first clamping groove 24. The second clamping groove 24 is used to vertically mount the brake disc 2 onto the base plate 11, and the axis of symmetry between the first brake pad 21 and the second brake pad 22 coincides with the center line between the first clamping part 12 and the second clamping part 13. That is, the brake disc 2 is vertically mounted onto the base plate 11 and the first brake pad 21 and the second brake pad 22 are symmetrically mounted relative to the center line of the base plate 11. When grinding the first brake pad 21 and the second brake pad 22, by ensuring that the thickness of the first brake pad 21 and the second brake pad 22 is the same, the thickness difference between the first brake pad 21 and the second brake pad 22 can be kept within a preset range, thereby ensuring the performance of the brake disc 2.

[0045] Furthermore, in this application, the brake disc 2 is mounted vertically on the base plate 11. After grinding the first brake pad 21, compared to related technologies, it is necessary to release the fixing device 1 from the brake disc 2 to flip it over before grinding the second brake pad 22. In this embodiment, the second brake pad 22 can be ground directly after the first brake pad 21 is ground, which facilitates the user's processing of the brake disc 2. Further, in some embodiments, the first brake pad 21 and the second brake pad 22 can be ground simultaneously to improve processing efficiency.

[0046] Please refer to it again. Figure 2 and Figure 3 The brake disc 2 is fan-shaped, with a positioning hole 26 at its center. A first clamping groove 23 and a second clamping groove 24 are symmetrically arranged at both ends of the brake disc 2. The center line between the centers of the first clamping groove 23 and the second clamping groove 24 coincides with the axis of symmetry between the first brake pad 21 and the second brake pad 22. This ensures that the brake disc 2 is symmetrically mounted on the base plate 11 when the center line between the first clamping groove 23 and the second clamping groove 24 coincides with the center line between the first clamping part 12 and the second clamping part 13. Furthermore, this embodiment achieves the installation of the brake disc 2 through the cooperation of the first clamping part 12 with the first clamping groove 23 and the second clamping part 13 with the second clamping groove 24. The installation method is simple, convenient for users, and improves installation efficiency.

[0047] It is understood that in the embodiments of this application, the first clamping groove 23 and the second clamping groove 24 are both formed by the first brake pad 21, the second brake pad 22 and the connecting post 25, and are not additional structures provided for fixing the fixing device 1. Therefore, this application can be directly installed and fixed according to the shape of the brake disc 2 itself, without the need for additional settings for the brake disc 2, thereby avoiding any impact on the function of the brake disc 2. This ensures both the fixing device 1's fixation of the brake disc 2 and the unaffected functionality of the brake disc 2.

[0048] In some embodiments, the brake disc 2 described above is applied to a rail transit braking system.

[0049] Please continue reading. Figure 4 and Figure 5 , Figure 4 for Figure 1 The front view of the fixing device shown; Figure 5 for Figure 1The diagram shows a top view of the fixing device. The first clamping part 12 includes a first fixing post 121 and a first snap-fit ​​member 122, and the second clamping part 13 includes a second fixing post 131 and a second snap-fit ​​member 132. The first fixing post 121 and the second fixing post 131 are symmetrically arranged at both ends of the substrate 11, and the center line between the first fixing post 121 and the second fixing post 131 coincides with the center line of the substrate 11 along its length. That is, the midpoint of the first fixing post 121 and the midpoint of the second fixing post 131 are both on the center line of the substrate 11 along its length.

[0050] The first fixing post 121 is provided with a first snap-fit ​​member 122, and the second fixing post 131 is provided with a second snap-fit ​​member 132. The first snap-fit ​​member 122 snaps into the first clamping groove 23, and the second snap-fit ​​member 132 snaps into the second clamping groove 24, so that the first brake pad 21 and the second brake pad 22 are symmetrically installed on both sides of the base plate 11. By setting the first snap-fit ​​member 122 on the first fixing post 121 and the second snap-fit ​​member 132 on the second fixing post 131, it can be ensured that the center line between the first snap-fit ​​member 122 and the second snap-fit ​​member 132 coincides with the center line of the length direction of the base plate 11. That is, the center line between the first snap-fit ​​member 122 and the second snap-fit ​​member 132 is perpendicular to the axis of symmetry between the first brake pad 21 and the second brake pad 22, thereby making the first brake pad 21 and the second brake pad 22 symmetrically installed along the center line of the length direction of the base plate 11. In addition, the brake disc 2 is mounted on the base plate 11 by the first snap-fit ​​member 122 snapping into the first clamping groove 23 and the second snap-fit ​​member 132 snapping into the second clamping groove 24. The installation structure is simple, which makes it easy to install the brake disc 2 and also makes it easy to disassemble after the brake disc 2 is processed.

[0051] A first protrusion 123 is provided on the side of the first fixing post 121 near the second fixing post 131, and a second protrusion 133 is provided on the side of the second fixing post 131 near the first fixing post 121. The center line between the first protrusion 123 and the second protrusion 133 coincides with the center line of the substrate 11 along its length. A first snap-fit ​​member 122 is provided with a first groove 1221, which snaps into the first protrusion 123 so that the first snap-fit ​​member 122 snaps into the first clamping groove 23. A second snap-fit ​​member 132 is provided with a second groove 1321, which snaps into the second protrusion 133 so that the second snap-fit ​​member 132 snaps into the second clamping groove 24. The first protrusion 123 on the first fixing post 121 engages with the first groove 1221 on the first locking member 122, allowing the first locking member 122 to be installed on the first fixing post 121 and engaged in the first clamping groove 23, thus positioning the brake disc 2. Similarly, the second protrusion 133 on the second fixing post 131 engages with the second groove 1321 on the second locking member 132, allowing the second locking member 132 to be installed on the second fixing post 131 and engaged in the second clamping groove 24, thus positioning the brake disc 2.

[0052] In some embodiments, the first protrusion 123 and the second protrusion 133 are arranged along the center line of the substrate 11; and the first groove 1221 is arranged at the center of the first latching member 122, and the second groove 1321 is arranged at the center of the second latching member 132, so that after the first groove 1221 is engaged with the first protrusion 123 and the second groove 1321 is engaged with the second protrusion 133, the first latching member 122 is just accommodated in the first clamping groove 23 and the second latching member 132 is just accommodated in the second clamping groove 24, and the center line between the first latching member 122 and the second latching member 132 coincides with the center line of the substrate 11, thereby enabling better positioning of the brake disc 2.

[0053] In some embodiments, after the first latching member 122 is accommodated in the first clamping groove 23, there is a gap between the first latching member 122 and the connecting post 25, so as to avoid the situation where the performance of the brake disc 2 is affected by friction between the first latching member 122 and the connecting post 25 during the polishing of the brake disc 2. Similarly, after the second latching member 132 is accommodated in the second clamping groove 24, there is a gap between the second latching member 132 and the connecting post 25, so as to avoid the situation where the performance of the brake disc 2 is affected by friction between the second latching member 132 and the connecting post 25 during the polishing of the brake disc 2.

[0054] In some embodiments, the area where the first latching member 122 contacts the first brake pad 21 and the second brake pad 22 is made of a soft material or a material with low friction to reduce the friction between the first latching member 122 and the first brake pad 21 and the second brake pad 22, thereby preventing the performance of the brake disc 2 from being affected by friction. Similarly, the area where the second latching member 132 contacts the first brake pad 21 and the second brake pad 22 is made of a soft material or a material with low friction to reduce the friction between the second latching member 132 and the first brake pad 21 and the second brake pad 22, thereby preventing the performance of the brake disc 2 from being affected by friction.

[0055] The first protrusion 123 is arranged parallel to the base plate 11, and the first latching member 122 is inclined relative to the first protrusion 123 towards the brake disc 2. By inclining the first latching member 122 relative to the first protrusion 123, the first latching member 122 can be more easily inserted into the first clamping groove 23 of the brake disc 2, thereby facilitating user installation and processing. Furthermore, since the brake disc 2 is fan-shaped, tilting the first latching member 122 towards the brake disc 2 increases the contact area between the first latching member 122 and the brake disc 2, thereby better securing the brake disc 2.

[0056] The first fixing post 121 has a first side surface 1211 and a second side surface 1212 on the side near the second fixing post 131. The second side surface 1212 is perpendicular to the base plate 11. The first side surface 1211 is inclined relative to the second side surface 1212 towards the brake disc 2 so that it abuts against the first snap-fit ​​122 when in contact with the first snap-fit ​​122. This limits the first snap-fit ​​122 in the inclined direction, thereby enhancing the stability of the first snap-fit ​​122 in the first clamping groove 23. This prevents the brake disc 2 from having processing errors due to the unstable installation of the first snap-fit ​​122 during the grinding process, thus ensuring the stability of the clamping device 1 on the brake disc 2 and ensuring the accuracy of the brake disc 2 processing.

[0057] In some embodiments, a first magnet is provided on the first side 1211 and a second magnet is provided on the first snap-fit ​​member 122. The first magnet and the second magnet attract each other so that the first snap-fit ​​member 122 snaps onto the first protrusion 123, thereby enhancing the stability of the installation of the first snap-fit ​​member 122, thus ensuring the stability of the clamping device 1 on the brake disc 2 and ensuring the precision of the processing of the brake disc 2.

[0058] It is understood that the second protrusion 133, the second fixing post 131, and the second snap-fit ​​132 are configured in the same way as the first protrusion 123, the first fixing post 121, and the first snap-fit ​​122. For details, please refer to the above content, which will not be repeated here.

[0059] The fixing device 1 also includes a positioning post 14, which is located on the side of the base plate 11 where the first clamping part 12 is provided, and is positioned between the first clamping part 12 and the second clamping part 13. A positioning hole 26 is used to mate with the positioning hole 26 to mount the brake disc 2 onto the fixing device 1. The center plane formed by the center point of the positioning post 14, the center point of the first clamping part 12, and the center point of the second clamping part 13 coincides with the axis of symmetry of the first brake pad 21 and the second brake pad 22. By providing the positioning post 14, the brake disc 2 can be pre-mounted on the base plate 11, facilitating installation. Furthermore, by ensuring that the center plane containing the center point of the positioning post 14, the center point of the first clamping part 12, and the center point of the second clamping part 13 coincides with the axis of symmetry of the first brake pad 21 and the second brake pad 22, the first brake pad 21 and the second brake pad 22 are symmetrically distributed about this center plane. This allows for quick and effective assurance that the thickness difference between the processed first brake pad 21 and the second brake pad 22 is within a preset range.

[0060] The fixing device 1 also includes a first support column 15, which is located on the side of the base plate 11 where the first clamping part 12 is provided, and is disposed between the first clamping part 12 and the positioning column 14. The height of the first support column 15 is less than the height of the first clamping part 12. The side of the first support column 15 that contacts the brake disc 2 has an inclined surface adapted to the brake disc 2, which abuts against the brake disc 2 to support it. By providing the first support column 15, the brake disc 2 can be supported to increase the stability of the brake disc 2 installation. Furthermore, by setting the side that abuts against the brake disc 2 as an inclined surface adapted to the brake disc 2, the brake disc 2 can be better supported, friction can be reduced, and wear on the brake disc 2 can be avoided.

[0061] In some embodiments, the fixing device 1 further includes a second support column 16, which is located on the side of the base plate 11 where the second clamping portion 13 is provided, and is disposed between the positioning column 14 and the second clamping portion 13. The height of the positioning column 14 is less than the height of the second clamping portion 13. The side of the first support column 15 that contacts the brake disc 2 is provided with an inclined surface adapted to the brake disc 2, which abuts against the brake disc 2 to support it. By providing the second support column 16, the brake disc 2 can be supported to increase the stability of the brake disc 2 installation. Furthermore, by setting the side that abuts against the brake disc 2 as an inclined surface adapted to the brake disc 2, the brake disc 2 can be better supported, friction can be reduced, and wear on the brake disc 2 can be avoided.

[0062] It is understandable that, in order to better ensure the stability of the brake disc 2 installation, multiple first support columns 15 and second support columns 16 can be provided between the first clamping part 12 and the second clamping part 13. The specific configuration can be made according to the actual situation, and no specific restrictions are made here.

[0063] In some embodiments, the fixing device 1 further includes a fixing plate 17, which is mounted on the side of the base plate 11 away from the first clamping part 12, for mounting the fixing device 1 in other equipment.

[0064] Please continue reading. Figure 6 , Figure 6 This is a schematic flowchart illustrating the processing method for a brake disc provided in this application embodiment. This application embodiment also provides a processing method for a brake disc 2, applied to a fixing device 1 used for processing the brake disc 2. The fixing device 1 includes a base plate 11, a first clamping part 12, and a second clamping part 13, which are symmetrically arranged at both ends of the base plate 11. The processing method includes the following steps:

[0065] 101. The brake disc is vertically mounted on the base plate by the first clamping part cooperating with the first clamping groove and the second clamping part cooperating with the second clamping groove, and the axis of symmetry between the first brake pad and the second brake pad coincides with the center line between the first clamping part and the second clamping part.

[0066] The fixing device 1 is the fixing device 1 described above, and its specific structure can be found in the above description, so it will not be repeated here. For example, the first clamping part 12 includes a first fixing post 121 and a first snap-fit ​​member 122, the second clamping part 13 includes a second fixing post 131 and a second snap-fit ​​member 132, and the fixing device 1 also includes a positioning post 14 disposed between the first clamping part 12 and the second clamping part 13.

[0067] Please continue reading. Figure 7 , Figure 7 for Figure 6 The schematic diagram of the processing method shown illustrates the steps for mounting the brake disc in some embodiments, where the brake disc 2 is mounted on the base plate 11 as follows:

[0068] 1011. Align the positioning hole of the brake disc with the positioning pin to mount the brake disc onto the fixing device.

[0069] 1012. The first snap-fit ​​component is snapped into the first clamping groove of the brake disc, and the second snap-fit ​​component is snapped into the second clamping groove of the brake disc, so that the first brake pad and the second brake pad are symmetrically installed on both sides of the base plate.

[0070] The brake disc 2 is quickly installed on the base plate 11 by the cooperation of the positioning hole 26, the first snap-fit ​​part 122 and the second snap-fit ​​part 132, which realizes the rapid positioning of the brake disc 2 and helps to improve the processing speed.

[0071] 102. Grind the first brake pad and the second brake pad separately so that the thickness of the first brake pad is the same as that of the second brake pad.

[0072] The fact that the thickness of the first brake pad 21 is the same as the thickness of the second brake pad 22 can be understood as meaning that, even with manufacturing errors, the thickness difference between the first brake pad 21 and the second brake pad 22 can be within a preset range. For example, in some embodiments, this thickness difference can be within 0.5 mm. This thickness difference can be set according to actual conditions and manufacturing precision, and no specific limitations are imposed here.

[0073] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A fixing device (1) for machining brake discs (2), characterized in that, The brake disc (2) includes a first brake pad (21) and a second brake pad (22) disposed opposite to each other, and a plurality of connecting posts (25) connecting the first brake pad (21) and the second brake pad (22). A first clamping groove (23) and a second clamping groove (24) are provided between the first brake pad (21) and the second brake pad (22). The fixing device (1) includes: substrate(11); The first clamping part (12) and the second clamping part (13) are provided. The axis of symmetry between the first brake pad (21) and the second brake pad (22) coincides with the center line between the first clamping part (12) and the second clamping part (13). The first clamping part (12) includes a first fixing post (121) and a first snap-fit ​​member (122). The second clamping part (13) includes a second fixing post (131) and a second snap-fit ​​member (132). The first fixing post (121) and the second fixing post (131) are symmetrically arranged at both ends of the substrate (11), and the center line between the first fixing post (121) and the second fixing post (131) coincides with the center line in the length direction of the substrate (11). The first fixing post (121) is provided with the first snap-fit ​​member (122), the second fixing post (131) is provided with the second snap-fit ​​member (132), the first fixing post (121) is provided with a first protrusion (123) on the side near the second fixing post (131), the second fixing post (131) is provided with a second protrusion (133) on the side near the first fixing post (121), and the center line between the first protrusion (123) and the second protrusion (133) coincides with the center line of the substrate (11) in the length direction; The first snap-fit ​​member (122) is provided with a first groove (1221), and the first groove (1221) snaps into the first protrusion (123) so that the first snap-fit ​​member (122) snaps into the first clamping groove (23). The second snap-fit ​​member (132) is provided with a second groove (1321), which snaps into the second protrusion (133) so that the second snap-fit ​​member (132) snaps into the second clamping groove (24).

2. The fixing device (1) according to claim 1, characterized in that, The brake disc (2) is fan-shaped, the first protrusion (123) is arranged parallel to the base plate (11), and the first snap-fit ​​member (122) is inclined relative to the first protrusion (123) toward the brake disc (2).

3. The fixing device (1) according to claim 2, characterized in that, The first fixing post (121) is provided with a first side surface (1211) and a second side surface (1212) on the side near the second fixing post (131). The second side surface (1212) is perpendicular to the base plate (11). The first side surface (1211) is inclined relative to the second side surface (1212) toward the brake disc (2) so as to abut against the first snap-fit ​​member (122) when in contact with the first snap-fit ​​member (122).

4. The fixing device (1) according to claim 3, characterized in that, A first magnet is provided on the first side (1211), and a second magnet is provided on the first snap-fit ​​member (122). The first magnet and the second magnet attract each other so that the first snap-fit ​​member (122) snaps onto the first protrusion (123).

5. The fixing device (1) according to any one of claims 1 to 4, characterized in that, The brake disc (2) has a positioning hole (26) at its center, and the fixing device (1) further includes: The positioning post (14) is located on the side of the base plate (11) where the first clamping part (12) is provided, and is located between the first clamping part (12) and the second clamping part (13). The positioning hole (26) is used to cooperate with the positioning hole (26) so that the brake disc (2) is installed on the fixing device (1). The central plane formed by the center point of the positioning post (14), the center point of the first clamping part (12), and the center point of the second clamping part (13) coincides with the axis of symmetry of the first brake pad (21) and the second brake pad (22).

6. The fixing device (1) according to any one of claims 1 to 4, characterized in that, The fixing device (1) further includes: The first support column (15) is located on the side of the substrate (11) where the first clamping part (12) is provided, and is provided between the first clamping part (12) and the second clamping part (13). The height of the first support column (15) is less than the height of the first clamping part (12). The first support column (15) has an inclined surface that is adapted to the brake disc (2) on the side that contacts the brake disc (2), and the inclined surface abuts against the brake disc (2) to support the brake disc (2).

7. A method for processing a brake disc (2), characterized in that, A fixing device (1) for machining a brake disc (2) as described in any one of claims 1 to 6, the fixing device (1) comprising a base plate (11), a first clamping part (12), and a second clamping part (13), the first clamping part (12) and the second clamping part (13) being symmetrically disposed at both ends of the base plate (11), the machining method comprising: The brake disc (2) is vertically mounted on the base plate (11) by the first clamping part (12) cooperating with the first clamping groove (23) and the second clamping part (13) cooperating with the second clamping groove (24), and the axis of symmetry between the first brake pad (21) and the second brake pad (22) coincides with the center line between the first clamping part (12) and the second clamping part (13); The first brake pad (21) and the second brake pad (22) are polished respectively so that the thickness of the first brake pad (21) is the same as the thickness of the second brake pad (22).

8. The processing method according to claim 7, characterized in that, The first clamping part (12) includes a first fixing post (121) and a first snap-fit ​​member (122), the second clamping part (13) includes a second fixing post (131) and a second snap-fit ​​member (132), and the fixing device (1) further includes a positioning post (14) disposed between the first clamping part (12) and the second clamping part (13). The method of vertically mounting the brake disc (2) onto the base plate (11) by the first clamping part (12) cooperating with the first clamping groove (23) and the second clamping part (13) cooperating with the second clamping groove (24) includes: The positioning hole (26) of the brake disc (2) is matched with the positioning post (14) so ​​that the brake disc (2) is installed on the fixing device (1); The first snap-fit ​​member (122) is snapped into the first clamping groove (23) of the brake disc (2), and the second snap-fit ​​member (132) is snapped into the second clamping groove (24) of the brake disc (2), so that the first brake pad (21) and the second brake pad (22) are symmetrically installed on both sides of the base plate (11).

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