Grinding device for friction sample and brake drum

Abstract

The invention discloses a grinding device for a friction sample wafer and a brake drum. The grinding device comprises a table body, a dustproof assembly, a grinding rotary table assembly, a sliding rail assembly and a driving assembly. The grinding rotary table assembly is used for manufacturing a friction sample piece, the sliding rail assembly is installed on the table body, the driving assembly composed of the first grinding mechanism and the second grinding mechanism is installed on the sliding rail assembly, and the initial friction sample piece and the inner surface of the brake drum can be ground on the table body by adjusting the first grinding mechanism and the second grinding mechanism. The driving assembly can adjust the axial direction through the sliding rail and adjust the radial direction through the sliding table so that the grinding wheel can be completely attached to the inner surface of the brake drum. According to the invention, the grinding standard specification sample wafer and the grinding brake drum are combined into a whole, the design is exquisite, the use is convenient, the grinding equipment does not need to be carried, the manufactured friction sample wafer is standard in size and flat in friction surface, and the test error caused by manual sample preparation is eliminated.

Description

Technical Field

[0001] The invention relates to a grinding device for friction sample sheets and brake drums, belonging to the technical field of mechanical processing. Background Art

[0002] The existing friction material chase testing machines that implement the SAEJ661 standard and GB / T17469-1998 standard are all practical with standard specifications of friction specimens. The arc radius of the working surface of the friction specimen must be the same as the radius of the inner surface of the brake drum of the friction material testing machine.

[0003] At present, most of the friction samples on the market are cut and shaped by machine processing and manually ground into arc surfaces. This method is inefficient and expensive. On the other hand, the inner surface of the brake drum of the friction material testing machine will become uneven due to long-term friction tests and needs to be polished and cleaned regularly. In the past, a set of polishing equipment needed to be moved and installed on the friction material testing machine to polish the inner surface of the brake drum. The polishing equipment is bulky, difficult to operate, and difficult to clean. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a grinding device for friction plates and brake drums, so that one device can perform grinding operations for friction plates and brake drums respectively through simple operations, thereby improving efficiency and reducing costs.

[0005] To achieve the above object, the present invention is implemented by adopting the following technical solutions: The present invention provides a grinding device for friction sample and brake drum, comprising: Taiwan body; A first slide rail assembly, comprising at least one first slide rail fixedly mounted on the platform body; the first slide rail is provided with at least one slide table capable of sliding along the first slide rail, the slide table is provided with a first grinding mechanism capable of grinding an initial friction sample and a second grinding mechanism capable of being used in a friction material testing machine; the first grinding mechanism and / or the second grinding mechanism are slidably connected to the slide table; Wherein, the direction in which the slide table slides along the first slide rail is different from the direction in which the first grinding mechanism and / or the second grinding mechanism slides along the slide table.

[0006] Furthermore, two slides are provided, and are used to install the first grinding mechanism and the second grinding mechanism respectively.

[0007] Furthermore, it also includes a grinding turntable assembly located at the end side of the first slide rail; The grinding turntable assembly comprises: A turntable, which is rotatably disposed on the table body; A second slide rail, fixed on the turntable; A first sliding block is slidably connected to the second sliding rail, and is used to fix and drive the initial friction sample to slide along the second sliding rail; and cooperates with the turntable so that the first grinding mechanism can at least grind the width and length of the initial friction sample; The second slider is slidably connected to the second slide rail, and is used to fix and drive the initial friction sample after being polished by the first polishing mechanism; and cooperates with the turntable so that the second polishing mechanism can at least continue to polish the arc surface of the initial friction sample.

[0008] Furthermore, a baffle is fixed on the second slide rail, and the side of the first slide block has a limiting groove matched with the baffle; a part of the baffle is embedded in the limiting groove to limit the sliding distance of the first slide block.

[0009] Furthermore, the grinding turntable assembly further comprises a chassis, a rotation center axis disposed on the chassis, and a support column supporting the chassis on the table body; The rotating central shaft passes through the turntable, and a pressing sleeve is fixed to the upper end of the rotating central shaft to provide a limit for the turntable; Wherein, a positioning pin is provided through the turntable, and a positioning hole is provided on the chassis for the positioning pin to be embedded.

[0010] Furthermore, the first sliding block has a first groove for accommodating the initial friction sample, and the first sliding block has a first pressing plate fixed thereon for pressing the initial friction sample into the first groove.

[0011] Furthermore, the second sliding block has a second groove for accommodating the initial friction sample; second clamping plates are provided on both sides of the second groove, and the two second clamping plates cooperate with each other to clamp and fix the initial friction sample; A spring ball extending toward the inner side of the second groove is fixed on the second pressing plate, and the spring ball can press and fix the initial friction sample in the second groove under the drive of a spring.

[0012] Further, the first grinding mechanism and the second grinding mechanism are respectively arranged on two first bottom plates, and the first bottom plates are slidably mounted on the slide table; The slide table is fixed on a second bottom plate, and the second bottom plate is slidably mounted on the first slide rail; A fixing block which can slide along the first slide rail is fixed to the bottom of the second bottom plate, and a fixing handle for locking the fixing block is installed on the fixing block.

[0013] Furthermore, the platform includes a lower platform, a working surface located on the top of the lower platform, and an upper platform covering the working surface; The upper platform is surrounded by a transparent acrylic plate.

[0014] Furthermore, a dustproof component is also included; it includes: a dust cover to collect dust; A dust cover base for storing dust is fixed to the platform; and the dust cover cover is fixed to the dust cover base by means of a tower buckle.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention provides a grinding device for friction samples and brake drums, in which a first grinding mechanism and a second grinding mechanism for grinding friction samples and brake drums are installed on a slide, and the slide is arranged on a first slide rail fixed to a table body, so that through a table body, based on the slidable first grinding mechanism and the second grinding mechanism, after performing a simple sliding operation and adjusting the positions of the first grinding mechanism and the second grinding mechanism, the friction samples and the brake drums can be respectively ground with the first grinding mechanism and the second grinding mechanism, which is easy to operate, has high working efficiency, and effectively saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a grinding device for a friction plate and a brake drum provided by an embodiment of the present invention; Figure 2 It is a diagram of the internal structure of a grinding device for a friction sample plate and a brake drum provided by an embodiment of the present invention, excluding the upper platform; Figure 3 is a structural schematic diagram of a first slide rail assembly provided by the present invention; Figure 4 It is a structural schematic diagram of the grinding turntable assembly provided by the present invention; Figure 5 is a schematic diagram of a device provided by the present invention for grinding a brake drum; 1. The upper platform; 2. The working surface; 3. The lower platform; 4. The motor control button; 5. The dust cover; 6. The dust cover base; 7. The tower buckle; 8. The rubber cover; 9. The first grinding wheel; 10. The motor; 11. The bearing sleeve; 12. The second grinding wheel; 13. The anti-loosening nut; 14. The first slide rail; 15. The first bottom plate; 16. The slide; 17. The second bottom plate; 18. The fixing block; 19. The fixing handle; 20. The fixing bracket; 21. The second slider; 22. The second clamping plate; 23. The spring ball; 24. The baffle; 25. The knurled screw; 26. The clamping sleeve; 27. The rotating center axis; 28. The positioning pin; 29. ​​The first clamping plate; 30. The first slider; 31. The baffle; 32. The turntable; 33. The chassis; 34. The support column; 35. The end face fixing block; 36. The brake drum; 37. The locking bending part. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Example

[0020] See also Figure 1This embodiment introduces a grinding device for friction samples and brake drums, including: a table body, a dustproof component, a grinding turntable component, a first slide rail component and a driving component.

[0021] See also Figure 1 The platform as a whole main supporting structure includes a lower platform 3, a working surface 2 and an upper platform 1. The upper platform 1 and the lower platform 3 are respectively arranged on the upper and lower sides of the working surface 2. The upper platform 1 is surrounded by a transparent acrylic plate, which is convenient for operators to observe the operation of the inner equipment and reduce dust spillage. A control module is arranged in the lower platform 3, and a motor control button 4 electrically connected to the control module is arranged on the side of the lower platform 3. Exemplarily, the control module can be a PLC control module.

[0022] See also Figure 2 and Figure 3 The first slide rail assembly includes two first slide rails 14 arranged in parallel and two second bottom plates 17 slidably mounted on the two first slide rails 14. A slide table 16 is fixedly mounted on each second bottom plate 17, and a slidable first bottom plate 15 is mounted on the slide table 16. In this embodiment, the slide table 16 adopts a dovetail groove slide table. The driving assembly includes a first grinding mechanism and a second grinding mechanism. The first grinding mechanism includes a first grinding wheel 9 and a motor 10 for driving the first grinding wheel 9 to rotate. The second grinding mechanism includes a second grinding wheel 12 and another motor 10 for driving the second grinding wheel 12 to rotate. The two first bottom plates 15 are respectively used to install the above two motors 10. Both motors 10 are electrically connected to the control module in the lower platform 3, and are controlled to start and stop by the corresponding motor control button 4. The output shafts of the two motors 10 are respectively installed with the first grinding wheel 9 and the second grinding wheel 12 through the bearing sleeve 11, and the first grinding wheel 9 and the second grinding wheel 12 are fixed by the anti-loosening nut 13 installed on the bearing sleeve 11. A plurality of end surface fixing blocks 35 for fixing the first slide rail 14 are detachably fixed on the working surface 2 , and the ends of the first slide rail 14 are embedded in and fixed in the end surface fixing blocks 35 .

[0023] Based on this, the motor 10 can slide with the first base plate 15 and the second base plate 17 supporting the first base plate 15 to adjust the position, so as to achieve the purpose of adjusting the position of the first grinding wheel 9 and the second grinding wheel 12. It is easy to operate and has a high degree of adjustment freedom, which can improve the grinding accuracy and grinding efficiency.

[0024] It should be noted that the first grinding wheel 9 and the second grinding wheel 12 have different orientations and are used to grind the initial friction sample and the inner drum surface of the brake drum 36 of the friction material test machine, respectively. Figure 2 The first grinding wheel 9 and the second grinding wheel 12 are oriented in opposite directions along the same axis so as to grind the initial friction sample and the brake drum 36 respectively.

[0025] In addition, it should be noted that the sliding directions of the first bottom plate 15 and the second bottom plate 17 are not in the same direction. For example, see Figure 3 , with the sliding direction of the second bottom plate 17 on the first slide rail 14 being the horizontal direction, the sliding direction of the first bottom plate 15 on the slide table 16 being the vertical direction, so that the position of the motor 10 can be adjusted horizontally and vertically, thereby achieving the purpose of accurately adjusting the positions of the first grinding wheel 9 and the second grinding wheel 12, so as to facilitate more efficient and accurate grinding.

[0026] Exemplarily, the second bottom plate 17 can be slidably connected to the first slide rail 14 in a conventional manner. That is, a sliding sleeve adapted to the first slide rail 14 is fixed at the bottom of the second bottom plate 17, and the sliding sleeve can provide support for the second bottom plate 17 and slide on the first slide rail 14.

[0027] Exemplarily, a fixing block 18 adapted to the first slide rail 14 is installed at the bottom of the second bottom plate 17, and the fixing block 18 can slide on the first slide rail 14 along with the second bottom plate 17. A fixing handle 19 for locking the fixing block 18 is provided on the fixing block 18, so that the second bottom plate 17 can be locked by locking the fixing block 18.

[0028] See also Figure 2 The dustproof assembly is used to collect and store dust generated during grinding operations, including a dust cover 5, a dust cover base 6, a buckle 7 and a rubber cover 8. The dust cover base 6 is directly fixed on the work surface 2, and the dust cover 5 is fixed to the dust cover base 6 by the buckle 7. The dust cover 5 is a U-shaped cover, and a dust collecting port facing the first grinding wheel 9 is formed on the concave side. The dust cover base 6 is a hollow structure that can be used to accommodate dust. The top of the dust cover base 6 is provided with an opening corresponding to the lower end of the dust cover 5, and the dust collected by the dust cover 5 can enter the dust cover base 6 through the opening. In addition, an opening for discharging dust is provided on one side of the dust cover base 6, and the opening is sealed by the rubber cover 8, and the rubber cover 8 is detachably plugged into the opening on the side of the dust cover base 6.

[0029] Based on the above content, a function provided by the dustproof component of this embodiment is as follows: the dust generated by the first grinding wheel 9 during operation can be collected by the outer dust cover cover 5 due to inertia, and then fall into the dust cover base 6 along the inner surface of the dust cover cover 5. The operator can regularly remove the rubber plug 8 and use a vacuum cleaner to suck out the grinding dust from the seal of the rubber plug 8, thereby improving the safety of the grinding operation environment and being more environmentally friendly.

[0030] See also Figure 4The grinding turntable assembly is used to place and fix the initial friction sample to be ground, and specifically includes a first slider 30, a second slider 21, a second slide rail, a turntable 32, a chassis 33, a support column 34, a positioning pin 28, a rotating central shaft 27, and a clamping sleeve 26. The chassis 33 is fixed to the upper end of the support column 34 and supported by the support column 34, and the lower end of the support column 34 is fixed to the working surface 2. The turntable 32 is rotatably mounted on the top of the chassis 33 through the rotating central shaft 27. The rotating central shaft 27 passes through the turntable 32, and one end extends into the chassis 33. The end of the rotating central shaft 27 located on the outer side of the turntable 32 is sleeved with a clamping sleeve 26 for providing a limit for the turntable 32. The positioning pin 28 is used to fix the turntable 32. The turntable 32 is provided with a through hole for the positioning pin 28 to pass through. Correspondingly, the chassis 33 is provided with a positioning hole for the positioning pin 28 to be inserted. The operator can insert the positioning pin 28 into the turntable 32 and the chassis 33 to fix the turntable 32. The second slide rail includes two baffles 24 fixed in parallel to the top surface of the turntable 32, and the symmetry axis between the two baffles 24 coincides with a diameter of the turntable 32. The first slider 30 and the second slider 21 are both arranged between the two baffles 24, and the first slider 30 and the second slider 21 are respectively located on both sides of the rotation center point of the turntable 32.

[0031] Exemplarily, the first slider 30 has a first groove for accommodating the initial friction sample. The initial friction sample is fixed on the first slider 30, and the length and width of the initial friction sample can be ground by the first grinding wheel 9. The first slider 30 can be installed with a first clamping plate 29 for clamping and fixing the initial friction sample, and the first clamping plate 29 is locked and fixed by screws. The baffle 31 for providing a limit for the first slider 30 is fixed on the baffle 24. A part of the baffle 31 is embedded in the first slider 30 from the side of the first slider 30. Correspondingly, the side of the first slider 30 is provided with a limit groove adapted to the baffle 31. One end of the limit groove is an opening for the baffle 31 to be embedded, and the other end is a closed opening for providing a limit. The first slider 30 can slide in the baffle 24, and the sliding distance is limited by the baffle 31 to prevent the first slider 30 from falling off between the two baffles 24.

[0032] Exemplarily, the second slider 21 also has a second groove for accommodating the initial friction sample. The initial friction sample after being polished by the first polishing mechanism is fixed on the second slider 21, and the arc surface of the initial friction sample can be polished by the second grinding wheel 12. A fixing bracket 20 for fixing the second slider 21 is arranged between the two baffles 24. The fixing bracket 20 is located between the rotation center of the turntable 32 and the second slider 21, and the fixing bracket 20 is fixed on the working surface 2. A knurled screw 25 for adjusting the position of the second slider 21 is connected between the second slider 21 and the fixing bracket 20. The knurled screw 25 passes through the fixing bracket 21 and is threadedly connected to the second slider 21. The operator can adjust the position of the second slider 21 as needed by setting a limit washer or a limit spring on the knurled screw 25, which is convenient for operation. The second pressing plates 22 located on both sides of the second groove are installed on the second sliding block 21 by screws, and the second pressing plates 22 are fixed with spring beads 23 for preliminarily fixing the initial friction sample. One end of the spring bead 23 is fixed to the inner side of the second pressing plate 22, and the other end extends toward the second groove of the second sliding block 21 to clamp and fix the initial friction sample. Then, the second pressing plates 22 on both sides can be tightened to further clamp and fix the initial friction sample in the second groove, so that the initial friction sample can be made more stable.

[0033] It should be noted that the first grinding wheel 9 is facing the direction of the turntable 32, and the extension direction of the baffle 24 is perpendicular to the first grinding wheel 9. When performing the grinding operation, the first slider 30 and the second slider 21 can slide in the direction close to or away from the first grinding wheel 9, and then the position of the first grinding wheel 9 can be adjusted accordingly to perform accurate and efficient grinding operations on the initial friction sample. Corresponding to the position of the second grinding wheel 12, the friction material tester is set on one side of the platform, and the operator can adjust the position of the second grinding wheel 12 so that the second grinding wheel 12 enters the inner side of the brake drum 36 of the friction material tester to achieve grinding of the inner surface of the brake drum 36.

[0034] It should be added that, in order to facilitate the movement of the platform, a plurality of pulleys are installed at the bottom of the lower platform 3, so that the operator can move the platform through the pulleys to move the platform toward the friction material testing machine. Figure 5 After the position adjustment between the table and the friction material testing machine is completed, in order to make the connection between the table and the friction material testing machine more stable, a locking bent piece 37 can be used to fix the table and the friction material testing machine. The locking bent piece 37 is an L-shaped piece with two connecting plates corresponding to the table and the friction material testing machine respectively. The operator can fix the two connecting plates to the table and the friction material testing machine respectively with screws.

[0035] The following is a description of the contents involved in the above embodiment in conjunction with a preferred embodiment: See also Figure 2 and Figure 5 This embodiment is based on the above-mentioned grinding device for friction sample and brake drum, and grinds the initial friction sample, as follows: First, when the length and width of the initial friction sample are to be polished, the initial friction sample is placed in the first groove of the first slider 30, and the first clamping plate 29 is used to clamp and fix the initial friction sample. The positioning pin 28 is inserted into the turntable 32 and the chassis 33 to fix the turntable 32 and always perpendicular to the first grinding wheel 9. The first grinding wheel 9 and the motor 10 that drives the first grinding wheel 9 to rotate are moved to the left to a suitable position through the first slide rail assembly, fixed with a fixed handle 19, and then the friction sample is made by the first grinding wheel 9. The first grinding wheel 9 adopts a 180-mesh specification. Press the motor control button 4 to start the motor 10 corresponding to the first grinding wheel 9. The motor 10 drives the first grinding wheel 9 to rotate, thereby polishing the length and width of the initial friction sample.

[0036] After the first grinding operation of the first grinding wheel 9 is completed, the initial friction sample is removed from the first slider 30, and then the arc surface of the initial friction sample is ground by the second slider 21, and the sample with the ground length and width is placed in the second groove of the second slider 21, and the initial friction sample is clamped with the second clamping plates 22 on both sides and locked with screws. Then the position of the second slide 21 can be adjusted by the knurled screw 25, and then the positioning pin 28 is removed, and the turntable 32 is rotated back and forth. The arc surface of the initial friction sample is continued to be ground by the first grinding wheel 9, so that the arc surface of the initial friction sample is consistent with the inner surface radius of the brake drum 36 of the friction material testing machine.

[0037] After the above two steps of grinding, the grinding operation of the initial friction sample can be completed.

[0038] Then, the inner surface of the brake drum 36 of the friction material testing machine is polished. Please refer to Figure 5 , the specific steps are as follows: Move the entire table body toward the friction material testing machine through the pulley on the lower table body 3, adjust the position of the table body, fix the pulley, fix the table body and the friction material testing machine through the locking bending piece 37, press the motor control button 4, start the motor 10, adjust the axial distance through the first slide rail 14, and fine-tune the radial distance through the slide 16 to make the second grinding wheel 12 fit with the inner surface of the brake drum 36. The second grinding wheel 12 has a specification of 320 mesh. The operator can move the second grinding wheel 12 back and forth on the first slide rail 14 by loosening and tightening the handle 19, adjust the position of the second grinding wheel 12 in time, and grind the inner surface of the brake drum 36 clean. Example

[0039] This embodiment is based on a grinding device for a friction plate and a brake drum provided in the above embodiment, with the difference that, in this embodiment, one slide 16 is provided, and two motors 10 are installed on this slide 16 .

[0040] Specifically, when performing the grinding operation, the initial friction sample is firstly grinded in length, width and curvature in sequence by the first grinding wheel 9 of the first grinding mechanism. After the grinding is completed, the operator slides the slide 16 and the second grinding mechanism, and grinds the brake drum 36 by the second grinding wheel 12 of the second grinding mechanism.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure rather than to limit its protection scope. Although the present disclosure has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the present disclosure, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the protection scope of the disclosed claims to be approved.

Claims

1. A grinding device for friction plates and brake drums, characterized in that: include: Taiwan body; A first slide rail assembly, comprising at least one first slide rail fixedly mounted on the platform body; the first slide rail is provided with at least one slide table capable of sliding along the first slide rail, the slide table is provided with a first grinding mechanism capable of grinding an initial friction sample and a second grinding mechanism capable of being used in a friction material testing machine; the first grinding mechanism and / or the second grinding mechanism are slidably connected to the slide table; Wherein, the direction in which the slide table slides along the first slide rail is different from the direction in which the first grinding mechanism and / or the second grinding mechanism slides along the slide table.

2. The grinding device for friction plates and brake drums according to claim 1, characterized in that: The slides are provided with two, and are used to install the first grinding mechanism and the second grinding mechanism respectively.

3. The grinding device for friction plates and brake drums according to claim 1, characterized in that: It also includes a grinding turntable assembly located at the end side of the first slide rail; The grinding turntable assembly comprises: A turntable, which is rotatably arranged on the table body; A second slide rail, fixed on the turntable; A first sliding block is slidably connected to the second sliding rail, and is used to fix and drive the initial friction sample to slide along the second sliding rail; and cooperates with the turntable so that the first grinding mechanism can at least grind the width and length of the initial friction sample; The second slider is slidably connected to the second slide rail, and is used to fix and drive the initial friction sample after being polished by the first polishing mechanism; and cooperates with the turntable so that the second polishing mechanism can at least continue to polish the arc surface of the initial friction sample.

4. The grinding device for friction plates and brake drums according to claim 3, characterized in that: A baffle is fixed on the second slide rail, and a side portion of the first slide block has a limiting groove matched with the baffle; a portion of the baffle is embedded in the limiting groove to limit the sliding distance of the first slide block.

5. The grinding device for friction plates and brake drums according to claim 3, characterized in that: The grinding turntable assembly also includes a chassis, a rotation center axis disposed on the chassis, and a support column supporting the chassis on the table body; The rotating central shaft passes through the turntable, and a pressing sleeve is fixed to the upper end of the rotating central shaft to provide a limit for the turntable; Wherein, a positioning pin is provided through the turntable, and a positioning hole is provided on the chassis for the positioning pin to be embedded.

6. The grinding device for friction plates and brake drums according to claim 3, characterized in that: The first sliding block is provided with a first groove for accommodating the initial friction pattern, and the first sliding block is fixed with a first pressing plate for pressing the initial friction pattern into the first groove.

7. The grinding device for friction plates and brake drums according to claim 3, characterized in that: The second sliding block has a second groove for accommodating the initial friction sample; second clamping plates are provided on both sides of the second groove, and the two second clamping plates cooperate with each other to clamp and fix the initial friction sample; A spring ball extending toward the inner side of the second groove is fixed on the second pressing plate, and the spring ball can press and fix the initial friction sample in the second groove under the drive of a spring.

8. The grinding device for friction plates and brake drums according to claim 1, characterized in that: The first grinding mechanism and the second grinding mechanism are respectively arranged on two first bottom plates, and the first bottom plates are slidably mounted on the slide table; The slide table is fixed on a second bottom plate, and the second bottom plate is slidably mounted on the first slide rail; A fixing block which can slide along the first slide rail is fixed to the bottom of the second bottom plate, and a fixing handle for locking the fixing block is installed on the fixing block.

9. The grinding device for friction plates and brake drums according to claim 1, characterized in that: The platform comprises a lower platform, a working surface located on the top of the lower platform, and an upper platform covering the working surface; The upper platform is surrounded by a transparent acrylic plate.

10. The grinding device for friction plates and brake drums according to claim 1, characterized in that: Also includes dust protection components; It includes: a dust cover to collect dust; A dust cover base for storing dust is fixed to the platform; and the dust cover cover is fixed to the dust cover base by a tower buckle.

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