A wear resistance testing machine with wear surface anti-chip cover

Abstract

The application discloses a wear-resistant surface anti-scrap covering wear resistance detection machine, which comprises a base and a first moving seat, the base is internally rotationally connected with a first lead screw and a second lead screw, and one side of the transmission bevel gear is provided with a driving bevel gear. The wear-resistant surface anti-scrap covering wear resistance detection machine, the detection assembly of the device is arranged left and right with the workpiece, so that the falling scrap will independently fall under the action of gravity during the detection process, and will not be accumulated on the surface of the workpiece, thereby avoiding the influence of the scrap covering on the normal wear resistance detection work, and the first magnetic ring and the second magnetic ring are in a magnetic attraction state during the detection of the workpiece, that is, the rubber protective cover is in a sealed state, so that the scrap will not pollute the external environment during the machining and subsequent extraction process, and the rubber protective cover can be deformed when the scrap splashes, so as to avoid the rebound of the splashing scrap to the sanding disc and cause wear of the sanding disc, thereby prolonging the service life of the sanding disc.

Description

Technical Field

[0001] The present invention relates to the technical field of wear resistance testing machines, and specifically to a wear resistance testing machine with anti-chip covering for wear-resistant surfaces. Background Technique

[0002] In the production and processing of cutting tools, diamond grinding discs are needed for grinding. Before leaving the factory, the wear resistance of diamond grinding discs needs to be sampled and tested to ensure the strength of diamond grinding discs. Therefore, wear resistance testing machines are required. After retrieval, it is found that a typical wear resistance testing machine in the prior art is, for example, the one with the publication number CN211148332U, a diamond grinding disc strength testing device, which relates to the technical field of diamond. It includes a bearing plate. At the four corners of the lower surface of the bearing plate, support columns are fixedly connected, and there are four support columns. On both sides of the upper surface of the bearing plate, fixing plates are fixedly connected, and there are two fixing plates. On the side surface of the fixing plate, a clamping mechanism is fixedly connected. On the upper surface of the fixing plate, a wear resistance testing mechanism is fixedly connected. On the upper surface of the bearing plate, a support mechanism and a dust suction device are fixedly connected. Its main feature is that it can detect the wear resistance of diamond grinding discs. After being polished by a grinding disc, if the thickness of the grinding surface of the diamond grinding disc does not decrease and there are few scratches, it is qualified. If the grinding surface of the diamond grinding disc is worn and the grinding surface is uneven, it is unqualified.

[0003] To sum up, when the existing wear resistance testing machine uses a grinding disc to move down to detect a workpiece, it is easy to have the phenomenon that grinding debris falls and accumulates on the upper surface of the workpiece and the grinding debris splashes and pollutes the working environment. In view of the above problems, the existing equipment needs to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a wear resistance testing machine with anti-chip covering for wear-resistant surfaces, so as to solve the problems in the above-mentioned background technique that when the existing wear resistance testing machine uses a grinding disc to move down to detect a workpiece, it is easy to have the phenomenon that grinding debris falls and accumulates on the upper surface of the workpiece and the grinding debris splashes and pollutes the working environment.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A wear resistance testing machine with anti-chip covering for wear-resistant surfaces, including a base and a first moving seat.

[0006] A first lead screw and a second lead screw are rotatably connected inside the base, and transmission bevel gears are connected to both the first lead screw and the second lead screw. On one side of the transmission bevel gear, a driving bevel gear is provided, and the driving bevel gear is connected to the output end of a first motor through a rotating cylinder. The first motor is installed in a mounting seat, and one side wall of the mounting seat is fixedly connected to the inner wall of the base through a hydraulic cylinder. At the same time, the other side wall of the mounting seat is connected to an anti-blowing component.

[0007] The first movable seat is connected to the first lead screw, and a second motor is installed on the top of the first movable seat. The output end of the second motor is connected to the retaining cover, and the retaining cover is connected to the grinding disc through an easy-to-remove component. The easy-to-remove component is rotatably connected to the fixed frame. The grinding disc is located inside the rubber protective cover, and the rubber protective cover is connected to one side wall of the fixed frame. A dust extraction hood is connected to the rubber protective cover, and the dust extraction hood is connected to one end of the dust extraction machine through a pipe. At the same time, the other end of the dust extraction machine is connected to the dust collection box. The dust collection box is connected to the back-blowing component. A limit frame is provided on one side of the rubber protective cover, and the limit frame is connected to the second movable seat through a second magnetic ring. At the same time, the second movable seat is connected to the second lead screw.

[0008] Preferably, the transmission bevel teeth on the second lead screw are meshed with the drive bevel teeth, and the drive bevel teeth are disposed between the two sets of transmission bevel teeth.

[0009] Preferably, the bottom of the mounting base is provided with spheres at equal intervals, and the spheres are located in guide grooves inside the base. At the same time, a tool box is slidably connected inside the base.

[0010] Preferably, the detachable component includes a first transmission rod, a slot, a limiting rod, a second transmission rod, and a pad. The slot is provided on one end face of the first transmission rod, and the other end face of the first transmission rod is connected to the second transmission rod through the limiting rod. The second transmission rod is fixedly connected to the pad, and the pad is connected to the grinding disc by bolts.

[0011] Preferably, the slot engages with the block, and the block is fixedly connected inside the cover, while the cover engages with the first transmission rod.

[0012] Preferably, the limiting rod is rotatably connected in the rotating groove of the fixed frame, and the rotating groove is connected to the pick-and-place groove, which is opened on the fixed frame.

[0013] Preferably, a first magnetic ring is fixedly connected to the side of the rubber protective cover away from the fixing frame, and the first magnetic ring and the second magnetic ring are correspondingly arranged and magnetically connected.

[0014] Preferably, the limiting frame is symmetrically provided with limiting springs, and the limiting springs are connected to the slide. At the same time, the slide is in contact with one side of the grinding disc. The slide is slidably connected in the slide groove, and the slide groove is connected to the feeding groove. Both the slide groove and the feeding groove are opened on the side wall of the limiting frame.

[0015] Preferably, the backflush assembly includes an outer frame, a backflush pipe, an air supply pipe, an air bag, and a pressure plate. The outer frame is connected to the outer wall of the dust collection box by screws, and a backflush pipe is installed on the inner side of the outer frame. The backflush pipe is connected to the air bag through the air supply pipe, and the air bag is fixedly connected to the side wall of the mounting base through the pressure plate.

[0016] Preferably, the outer frame is disposed on the outer side of the filter screen, and the filter screen is installed on the outer wall of the dust collection box, while a dust collection box is slidably connected inside the dust collection box.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the wear resistance testing machine with wear-resistant surface anti-scraping coating,

[0018] (1) This invention effectively solves the problems of existing abrasion resistance testing machines, which easily cause abrasion debris to fall and accumulate on the upper surface of the workpiece and to splatter and pollute the working environment when the abrasion disc moves downward to test the workpiece. The first motor drives the second lead screw to rotate, thereby causing the second moving seat to move the limit frame and the workpiece inside to the left to contact the abrasion disc for abrasion resistance testing. When the vertically arranged abrasion disc is used for abrasion resistance testing, the falling debris will fall autonomously under the action of gravity, thereby avoiding its accumulation on the upper surface of the workpiece. This avoids the adverse effects on subsequent testing work caused by debris obstruction during the testing process. The rubber protective cover will collect and suppress the falling and splattering debris, thereby preventing it from polluting the working environment and processing equipment. At the same time, the dust collector can... The dust extraction hood extracts debris that falls into the rubber protective cover and stores it in a dust collection box. Compared with existing abrasion resistance testing machines, the testing components and workpieces in this device are arranged on the left and right sides. Therefore, the debris that falls during the testing process will fall off by gravity and will not accumulate on the surface of the workpiece. This avoids the normal operation of abrasion resistance testing due to debris covering the workpiece. At the same time, the first and second magnetic rings are in a magnetic attraction state when the workpiece is being tested, that is, the rubber protective cover is in a sealed state. Therefore, the debris will not pollute the external environment during processing and subsequent extraction. In addition, the rubber protective cover can deform when debris splashes, thereby preventing the splashed debris from rebounding onto the grinding disc and causing wear, thus extending its service life. Compared with existing plastic and metal protective shells, the rubber protective cover can also reduce noise during the protection process.

[0019] (2) The present invention can effectively solve the problem that the existing wear resistance testing machine needs to frequently replace the grinding disc used for testing by using a hydraulic cylinder, easy-to-disassemble components and a fixed frame. The existing wear resistance testing machine does not have the function of automatically disassembling the grinding disc, and the manual disassembly process is relatively cumbersome. When the grinding disc is severely worn and needs to be replaced, the operator can control the hydraulic cylinder to push the first motor to drive the drive bevel gear to move to the left and mesh with the transmission bevel gear on the first screw. Thus, the first motor can drive the first screw to rotate, and the second motor can drive the cover and the block away from the easy-to-disassemble components, thereby realizing the separation of the drive component and the easy-to-disassemble components. Then, the operator can manually take out the easy-to-disassemble components with the grinding disc connected from the pick-and-place slot on the fixed frame and replace it with another set of easy-to-disassemble components with the grinding disc installed. Then, the operator can control the first motor to drive the first screw to rotate in the opposite direction, so that the cover and the block on the second motor can engage with the easy-to-disassemble components. Then, the operator can control the hydraulic cylinder to push the first motor to reset, thereby realizing the replacement of the grinding disc. Compared with the existing method of manually disassembling bolts for replacement, the disassembly process of this device is more convenient and faster.

[0020] (3) The present invention can effectively solve the problem of debris clogging the filter screen by using the back-blowing component and the hydraulic cylinder, so that the gas entering the dust collection box with the waste debris cannot be discharged normally. When the hydraulic cylinder pushes the first motor to move and disassemble the grinding disc, the mounting seat on the outside of the first motor will push the pressure plate to squeeze the air bag, so that the gas inside the air bag can enter the back-blowing pipe through the air supply pipe and be discharged to the filter screen through the exhaust port on the back-blowing pipe to back-blow the filter screen, thereby avoiding the filter screen being clogged by debris, and thus facilitating the normal discharge of airflow. Compared with the existing manual cleaning method, it is more convenient and faster. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main cross-sectional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the overall structure of the filter screen, dust collection box, and back-blowing component of the present invention on the dust collection box;

[0024] Figure 4 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0025] Figure 5 For the present invention Figure 2 Enlarged structural diagram at point B;

[0026] Figure 6 This is a schematic diagram of the overall structure of the connection between the grinding disc and the easily detachable component of the present invention.

[0027] In the diagram: 1. Base; 2. First lead screw; 3. Second lead screw; 4. Transmission bevel gear; 5. Drive bevel gear; 6. First motor; 7. Mounting seat; 8. Ball; 9. Hydraulic cylinder; 10. First moving seat; 11. Second motor; 12. Clamping cover; 13. Clamping block; 14. Easy-to-disassemble component; 1401. First transmission rod; 1402. Clamping slot; 1403. Limiting rod; 1404. Second transmission rod; 1405. Pad; 15. Grinding disc; 16. Fixing bracket; 17. 18. Rubber protective cover; 19. First magnetic ring; 20. Limiting frame; 21. Limiting spring; 22. Slide; 23. Second magnetic ring; 24. Second movable seat; 25. Feed chute; 26. Slide chute; 27. Dust collector; 28. Dust collection box; 29. ​​Filter screen; 30. Tool box; 31. Dust collection box; 32. Backflush assembly; 3201. External frame; 3202. Backflush pipe; 3203. Air supply pipe; 3204. Airbag; 3205. Pressure plate. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-6 This invention provides a technical solution: a wear resistance testing machine with a wear-resistant surface protected from debris coverage.

[0030] Example 1

[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a first lead screw 2 and a second lead screw 3 are rotatably connected inside the base 1, and both the first lead screw 2 and the second lead screw 3 are connected to a transmission bevel gear 4. A drive bevel gear 5 is provided on one side of the transmission bevel gear 4, and the drive bevel gear 5 is connected to the output end of the first motor 6 through a rotating cylinder. The first motor 6 is installed in the mounting base 7, and one side wall of the mounting base 7 is fixedly connected to the inner wall of the base 1 through a hydraulic cylinder 9. At the same time, the other side wall of the mounting base 7 is connected to the back-blowing assembly 32.

[0032] In a further embodiment, the transmission bevel teeth 4 on the second lead screw 3 are meshed with the drive bevel teeth 5, and the drive bevel teeth 5 are disposed between the two sets of transmission bevel teeth 4.

[0033] In a further embodiment, the bottom of the mounting base 7 is provided with spheres 8 at equal intervals, and the spheres 8 are disposed in the guide groove inside the base 1. Meanwhile, the tool box 30 is slidably connected inside the base 1.

[0034] In a further embodiment, the backflush assembly 32 includes an outer frame 3201, a backflush pipe 3202, an air supply pipe 3203, an airbag 3204, and a pressure plate 3205. The outer frame 3201 is connected to the outer wall of the dust collection box 28 by screws. Meanwhile, the backflush pipe 3202 is installed on the inner side of the outer frame 3201. The backflush pipe 3202 is connected to the airbag 3204 through the air supply pipe 3203. The airbag 3204 is fixedly connected to the side wall of the mounting base 7 through the pressure plate 3205.

[0035] In a further embodiment, the outer frame 3201 is correspondingly disposed on the outer side of the filter 29, and the filter 29 is installed on the outer wall of the dust collection box 28, while a dust collection box 31 is slidably connected inside the dust collection box 28.

[0036] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the first movable seat 10 is connected to the first lead screw 2, and the top of the first movable seat 10 is equipped with a second motor 11. The output end of the second motor 11 is connected to the retaining cover 12, and the retaining cover 12 is connected to the grinding disc 15 through the easy-to-remove component 14. The easy-to-remove component 14 is rotatably connected to the fixed frame 16. The grinding disc 15 is located inside the rubber protective cover 17, and the rubber protective cover 17 is connected to one side wall of the fixed frame 16.

[0037] like Figure 1 , Figure 2 and Figure 5 As shown, a dust extraction hood 27 is connected to the rubber protective cover 17, and the dust extraction hood 27 is connected to one end of the dust extraction machine 26 through a pipe. At the same time, the other end of the dust extraction machine 26 is connected to the dust collection box 28. The dust collection box 28 is connected to the back-blowing assembly 32. A limit frame 19 is provided on one side of the rubber protective cover 17, and the limit frame 19 is connected to the second movable seat 23 through the second magnetic ring 22. At the same time, the second movable seat 23 is connected to the second lead screw 3.

[0038] In a further embodiment, a first magnetic ring 18 is fixedly connected to the side of the rubber protective cover 17 away from the fixing frame 16, and the first magnetic ring 18 and the second magnetic ring 22 are correspondingly arranged, and the first magnetic ring 18 and the second magnetic ring 22 are magnetically connected.

[0039] In a further embodiment, limit springs 20 are symmetrically arranged inside the limit frame 19, and the limit springs 20 are connected to the slide 21. At the same time, the slide 21 contacts one side of the grinding disc. The slide 21 is slidably connected in the slide groove 25, and the slide groove 25 is connected to the feeding groove 24. Both the slide groove 25 and the feeding groove 24 are opened on the side wall of the limit frame 19.

[0040] Specifically, in actual operation, the operator can press the slide 21 to place the workpiece to be inspected, i.e., the diamond grinding disc, into the limiting frame 19 through the feeding groove 24. Then, the slide 21 is released, and the limiting spring 20 pushes the slide 21 to fix it, so that one side of it protrudes from the left side of the limiting frame 19. The first motor 6 drives the drive bevel gear 5 to rotate, and the rotating drive bevel gear 5 drives the transmission bevel gear 4 and the second lead screw 3 to rotate, thereby causing the second moving seat 23 to move the limiting frame 19 and the workpiece inside it to the left along the second lead screw 3 until the workpiece... The workpiece is in contact with the rotating abrasive disc 15 inside the rubber protective cover 17, so that the abrasion resistance of the workpiece can be tested by the abrasive disc 15. When the workpiece is in contact with the abrasive disc 15, the first magnetic ring 18 and the second magnetic ring 22 are connected and the rubber protective cover 17 is sealed. At the same time, the debris that falls during the abrasion resistance test will be drawn into the dust collection box 28 by the dust extraction action of the dust extraction machine 26. The airflow that enters the dust collection box 28 with the debris will be discharged through the filter screen 29, and the debris will settle in the dust collection box 31.

[0041] When the abrasive disc 15 is severely worn and affects its use, the operator can control the hydraulic cylinder 9 to push the first motor 6 to move the drive bevel gear 5 and separate it from the transmission bevel gear 4 on the second lead screw 3 until the drive bevel gear 5 meshes with the transmission bevel gear 4 on the first lead screw 2. Then, the operator controls the first motor 6 to drive the first lead screw 2 to rotate, which in turn causes the first moving seat 10 to move the second motor 11, the retaining cover 12, and the retaining block 13 on its top along the first lead screw 2 to the left, away from the easy-to-remove component 14. This achieves the separation of the drive component and the easy-to-remove component 14. The operator can then manually remove the easy-to-remove component 14, which is connected to the abrasive disc 15, from the fixed frame 1. The component 14 is moved from the rotating slot on the 6 to the pick-and-place slot and removed through the L-shaped pick-and-place slot. Similarly, another set of easy-to-remove components 14 connected with a new grinding disc 15 is placed in the rotating slot on the fixed frame 16. Then, the operator can control the first motor 6 to drive the first lead screw 2 to rotate in the opposite direction, so that the locking cover 12 and locking block 13 on the second motor 11 engage with the easy-to-remove component 14. Then, the hydraulic cylinder 9 is controlled to push the first motor 6 and its drive bevel gear 5 to move until the drive bevel gear 5 contacts and meshes with the transmission bevel gear 4 on the second lead screw 3, thereby facilitating the first motor 6 to drive the second lead screw 3 to move and feed materials.

[0042] Example 2

[0043] This embodiment is a further description of the above embodiments. It should be understood that this embodiment includes all the aforementioned technical features and is further described in detail.

[0044] like Figure 1 , Figure 2 and Figure 6 As shown, in a further embodiment, the detachable component 14 includes a first transmission rod 1401, a slot 1402, a limiting rod 1403, a second transmission rod 1404, and a pad 1405. The slot 1402 is provided on one end face of the first transmission rod 1401, and the other end face of the first transmission rod 1401 is connected to the second transmission rod 1404 through the limiting rod 1403. The second transmission rod 1404 is fixedly connected to the pad 1405, and the pad 1405 is connected to the grinding disc 15 by bolts.

[0045] In a further embodiment, the card slot 1402 is engaged with the card block 13, and the card block 13 is fixedly connected inside the card cover 12. At the same time, the card cover 12 is engaged with the first transmission rod 1401.

[0046] In a further embodiment, the limiting rod 1403 is rotatably connected in the rotating groove of the fixed frame 16, and the rotating groove is connected to the pick-and-place groove, which is also opened on the fixed frame 16.

[0047] Specifically, while the device is being tested, the staff can remove the damaged grinding disc 15 from the pad 1405 by unscrewing the bolts and replace it with a new one. This allows for quick replacement of the grinding disc 15 when it wears out. The assembled grinding disc 15 and the easily detachable component 14 can be stored in the tool box 30 for easy access when needed.

[0048] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention.

[0049] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wear resistance testing machine with wear-resistant surface anti-shaving and chip-proof covering, comprising a base (1) and a first movable base (10), characterized in that: The base (1) is rotatably connected to a first lead screw (2) and a second lead screw (3), and both the first lead screw (2) and the second lead screw (3) are connected to a transmission bevel gear (4). A drive bevel gear (5) is provided on one side of the transmission bevel gear (4), and the drive bevel gear (5) is connected to the output end of the first motor (6) through a rotating drum. The first motor (6) is installed in the mounting base (7), and one side wall of the mounting base (7) is fixedly connected to the inner wall of the base (1) through a hydraulic cylinder (9). At the same time, the other side wall of the mounting base (7) is connected to the back-blowing assembly (32). The first movable seat (10) is connected to the first lead screw (2), and a second motor (11) is installed on the top of the first movable seat (10). The output end of the second motor (11) is connected to the retaining cover (12), and the retaining cover (12) is connected to the grinding disc (15) through the detachable component (14). The detachable component (14) is rotatably connected to the fixed frame (16). The grinding disc (15) is located inside the rubber protective cover (17), and the rubber protective cover (17) is connected to one side wall of the fixed frame (16). A dust extraction hood (27) is connected to the rubber protective cover (17), and the dust extraction hood (27) is connected to the dust extraction machine (26) through a pipe. One end of the dust collector (26) is connected to the dust collection box (28), and the other end of the dust collector (26) is connected to the dust collection box (28). The dust collection box (28) is connected to the back-blowing assembly (32). A limit frame (19) is provided on one side of the rubber protective cover (17), and the limit frame (19) is connected to the second moving seat (23) through the second magnetic ring (22). At the same time, the second moving seat (23) is connected to the second lead screw (3). A first magnetic ring (18) is fixedly connected to the side of the rubber protective cover (17) away from the fixed frame (16), and the first magnetic ring (18) and the second magnetic ring (22) are correspondingly arranged. At the same time, the first magnetic ring (18) and the second magnetic ring (22) are magnetically connected.

2. The wear resistance testing machine with anti-scraping coating on the wear-resistant surface according to claim 1, characterized in that: The transmission bevel teeth (4) on the second lead screw (3) are meshed with the drive bevel teeth (5), and the drive bevel teeth (5) are arranged between the two sets of transmission bevel teeth (4).

3. The wear resistance testing machine with anti-debris covering for wear-resistant surfaces according to claim 1, characterized in that: The bottom of the mounting base (7) is provided with spheres (8) at equal intervals, and the spheres (8) are located in the guide groove inside the base (1). Meanwhile, a tool box (30) is slidably connected inside the base (1).

4. The wear resistance testing machine with anti-scraping coating on the wear-resistant surface according to claim 1, characterized in that: The easily detachable component (14) includes a first transmission rod (1401), a slot (1402), a limiting rod (1403), a second transmission rod (1404), and a pad (1405). A slot (1402) is provided on one end face of the first transmission rod (1401). The other end face of the first transmission rod (1401) is connected to the second transmission rod (1404) through the limiting rod (1403). The second transmission rod (1404) is fixedly connected to the pad (1405). At the same time, the pad (1405) is connected to the grinding disc (15) by bolts.

5. The wear resistance testing machine with anti-debris covering for wear-resistant surfaces according to claim 4, characterized in that: The slot (1402) engages with the block (13), and the block (13) is fixedly connected inside the cover (12). Meanwhile, the cover (12) engages with the first transmission rod (1401).

6. The wear resistance testing machine with anti-debris covering for wear-resistant surfaces according to claim 4, characterized in that: The limiting rod (1403) is rotatably connected in the rotating groove of the fixed frame (16), and the rotating groove is connected to the pick-up and put-down groove, while the pick-up and put-down groove is opened on the fixed frame (16).

7. The wear resistance testing machine with anti-scraping coating on the wear-resistant surface according to claim 1, characterized in that: The limiting frame (19) is symmetrically provided with limiting springs (20), and the limiting springs (20) are connected to the slide (21). At the same time, the slide (21) is in contact with one side of the grinding disc. The slide (21) is slidably connected in the slide groove (25), and the slide groove (25) is connected to the feeding groove (24). At the same time, the slide groove (25) and the feeding groove (24) are both opened on the side wall of the limiting frame (19).

8. The wear resistance testing machine with anti-scraping coating on the wear-resistant surface according to claim 1, characterized in that: The backflush assembly (32) includes an outer frame (3201), a backflush pipe (3202), an air supply pipe (3203), an airbag (3204), and a pressure plate (3205). The outer frame (3201) is connected to the outer wall of the dust collection box (28) by screws. Meanwhile, the backflush pipe (3202) is installed on the inner side of the outer frame (3201). The backflush pipe (3202) is connected to the airbag (3204) through the air supply pipe (3203). The airbag (3204) is fixedly connected to the side wall of the mounting base (7) through the pressure plate (3205).

9. The wear resistance testing machine with anti-debris covering for wear-resistant surfaces according to claim 8, characterized in that: The outer frame (3201) is correspondingly arranged on the outside of the filter (29), and the filter (29) is installed on the outer wall of the dust collection box (28), while a dust collection box (31) is slidably connected inside the dust collection box (28).

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