Differential shell surface polishing device

Abstract

The invention belongs to the technical field of polishing, and particularly discloses a differential shell surface polishing device which comprises an outer frame, an inner groove is formed in the surface of the middle end of the outer frame, a frame-shaped sliding block is slidably installed in the inner groove, an air cylinder is installed on the back of the outer frame, and the output end of the air cylinder is connected to the frame-shaped sliding block. And a polishing mechanism and a feeding mechanism are installed in the frame-shaped sliding block, the feeding mechanism is located above the polishing mechanism, an adjusting mechanism is arranged on the side face of the polishing mechanism, and a turnover mechanism is arranged on the side face of the feeding mechanism. Through mutual cooperation of all the mechanisms, the feeding mechanism and the differential shell can be turned over in the process that the frame-shaped sliding block moves towards the outer side of the outer frame, observation, disassembly and assembly are convenient, residual polishing sand in the shell can fall back to the polishing frame, and waste and pollution are avoided.

Description

Technical Field

[0001] The invention belongs to the field of polishing, and specifically discloses a differential housing surface polishing device. Background Art

[0002] The automobile differential is a mechanism that enables the left and right drive wheels to rotate at different speeds. The differential housing is an important part of the differential. It is a metal shell that wraps the planetary gears. During the manufacturing process of the differential housing, some surface defects may appear, such as scratches, sand holes, and pores. Polishing can effectively eliminate these defects, making the housing surface flatter and smoother, and improving the appearance quality of the housing. At the same time, the smooth housing surface after polishing can reduce friction with lubricating oil and internal components, reduce energy loss, and improve the transmission efficiency of the differential.

[0003] When polishing the differential housing with polishing sand in the prior art, the staff manually puts the differential housing into a container or polishing frame filled with polishing sand, and rubs the polishing sand against the housing surface through mechanical vibration or other means to achieve a polishing effect. After polishing is completed, the staff needs to manually remove the differential housing from the polishing sand, and clean and inspect it. The degree of automation is low, resulting in low production efficiency. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a differential case surface polishing device to solve the problem that in the prior art, when polishing the differential case with polishing sand, the staff manually puts the differential case into a container or polishing frame filled with polishing sand, and rubs the polishing sand against the case surface through mechanical vibration or other means to achieve a polishing effect. After polishing is completed, the staff needs to manually remove the differential case from the polishing sand, and clean and inspect it, which has a low degree of automation and leads to low production efficiency.

[0005] In order to achieve the above purpose, the present invention provides a differential case surface polishing device, comprising an outer frame, an inner groove is opened on the middle end surface of the outer frame, a frame-shaped slider is slidably installed inside the inner groove, a cylinder is installed on the back of the outer frame, the output end of the cylinder is connected to the frame-shaped slider, a polishing mechanism and a feeding mechanism are installed inside the frame-shaped slider, and the feeding mechanism is above the polishing mechanism, an adjustment mechanism is arranged on the side of the polishing mechanism, the adjustment mechanism is used to adjust the height of the polishing mechanism, and a flipping mechanism is arranged on the side of the feeding mechanism, the flipping mechanism is used to adjust the angle of the feeding mechanism.

[0006] In the above technical solution, preferably, a storage cavity is opened on the bottom surface of the frame-shaped slider, and the polishing mechanism includes a base, which is movably installed inside the storage cavity, and a polishing frame is arranged above the base, and side ears are installed at the four end corners of the polishing frame, and a polishing rod is fixedly installed on the surface of the side ears, and a composite spring is installed at the bottom of the polishing rod, and the bottom end of the composite spring is connected to the base.

[0007] In the above technical scheme, preferably, the adjustment mechanism includes a path groove, the path grooves are opened on both sides of the inner groove, the path groove includes a linear slide groove and an inclined slide groove, the linear slide groove is arranged at the front end of the inclined slide groove, movable columns are fixedly arranged on both sides of the base, a movable groove is opened on the side of the storage cavity, the surface of the movable column passes through the movable groove, and the end of the movable column is slidably engaged in the path groove, a limiting groove is opened on the rear surface of the storage cavity, a guide column is arranged inside the limiting groove, a limiting block is fixedly installed on the bottom of the rear of the base, and the middle part of the limiting block is movably sleeved on the surface of the guide column.

[0008] In the above technical solution, preferably, the loading mechanism includes a stabilizing plate, which is arranged directly above the polishing frame, and a plurality of clamping mechanisms are arranged at the bottom of the stabilizing plate, and a synchronization mechanism is arranged at the top of the stabilizing plate, and the synchronization mechanism cooperates with the tops of the plurality of clamping mechanisms.

[0009] In the above technical solution, preferably, the clamping mechanism is similar to the internal chuck structure of a CNC machine tool, and the clamping mechanism is used to clamp the end of the differential housing.

[0010] In the above technical solution, preferably, side columns are fixedly installed on both sides of the top of the frame-shaped slider, gears are rotatably installed inside the side columns, rotating plates are installed on both ends of the stabilizing plate by bolts, and the surface of the rotating plate is fixedly connected to the gears by a pin shaft.

[0011] In the above technical scheme, preferably, a matching groove is provided at the top of the frame-shaped slider, and the flip mechanism includes a rack, which is movably inserted into the matching groove and meshed with the gear, and a first connecting frame is fixedly installed at the bottom of the rack, and a contraction groove is provided at the bottom of the side column, and a tension spring is provided inside the contraction groove, and the end of the tension spring is connected to a first cylindrical rod, which is movably installed in the contraction groove under the action of the tension spring, and a second rectangular rod is fixedly installed at the other end of the first cylindrical rod, and a second connecting frame is fixedly installed on the top of the second rectangular rod, and a connecting rod is connected between the first connecting frame and the second connecting frame via a rotating shaft, and a third cylindrical rod is fixedly installed at the other end of the second rectangular rod, and the surface of the third cylindrical rod movably passes through the frame-shaped slider and the outer frame, and a disc is fixedly installed at the other end of the third cylindrical rod.

[0012] In the above technical solution, preferably, a shaking motor is installed at the bottom of the polishing frame, and the shaking motor can drive the polishing sand inside the polishing frame to vibrate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] Through the cooperation of the polishing mechanism and the feeding mechanism, multiple differential housings can be arranged and placed inside the polishing frame, and through the rotation of the housing, the polishing sand can be fully and evenly contacted with all parts of the housing surface, avoiding the occurrence of polishing dead angles, greatly improving the polishing efficiency of the differential housing. At the same time, uniform polishing can effectively improve the flatness and finish of the housing surface, significantly improve the polishing quality, and ensure that the differential housing finally achieves a high-quality polishing effect;

[0015] The flipping mechanism pushes the frame-shaped slider to move through the cylinder, and utilizes the cooperation of the tension spring, connecting rod, rack and gear and other components to flip the feeding mechanism and the differential housing when the frame-shaped slider moves to the outside of the outer frame, so that the staff can observe and disassemble the differential housing, improve the work efficiency, and in the flipping process, the polishing sand remaining inside the housing can fall into the polishing frame, avoiding the waste of polishing sand and pollution to the working environment;

[0016] The adjusting mechanism adopts the cooperation mode of movable column and path groove, limit block and guide column, which has simple structure, is easy to manufacture and maintain, reduces equipment cost and failure rate while ensuring the function of adjusting the height of the polishing mechanism, and improves the overall reliability of the equipment; and when the flipping mechanism flips the feeding mechanism, the adjusting mechanism can lower the height of the polishing mechanism to prevent the differential housing from colliding with it. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal structure of the frame-shaped slider of the present invention;

[0019] Figure 3 This is a schematic diagram of a frame-shaped slider structure from another perspective of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the feeding mechanism of the present invention;

[0021] Figure 5 It is a schematic diagram of the polishing mechanism structure of the present invention;

[0022] Figure 6 A partial cross-sectional side view of a frame-shaped slider of the present invention;

[0023] Figure 7 For the present invention Figure 6 The enlarged view of point A in the middle;

[0024] Figure 8 It is a schematic diagram of the inner wall structure of the inner tank of the present invention.

[0025] In the figure: 1. outer frame; 2. inner groove; 3. frame-shaped slider; 4. polishing mechanism; 5. feeding mechanism; 6. cylinder; 7. linear slide; 8. inclined slide; 9. storage chamber; 10. base; 11. limit block; 12. limit groove; 13. guide column; 14. movable column; 15. movable groove; 16. side ear; 17. light rod; 18. composite spring; 19. polishing frame; 20. shaking motor; 21. side column; 22. stabilizing plate; 23. synchronization mechanism; 24. clamping mechanism; 25. rotating plate; 26. gear; 27. matching groove; 28. rack; 29. ​​first connecting frame; 30. connecting rod; 31. second connecting frame; 32. contraction groove; 33. tension spring; 34. first cylindrical rod; 35. second rectangular rod; 36. third cylindrical rod. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] like Figure 1-Figure 8A differential housing surface polishing device shown in the figure comprises an outer frame 1, an inner groove 2 is provided on the middle end surface of the outer frame 1, a frame-shaped slider 3 is slidably installed inside the inner groove 2, a cylinder 6 is installed on the back of the outer frame 1, the output end of the cylinder 6 is connected to the frame-shaped slider 3, a polishing mechanism 4 and a feeding mechanism 5 are installed inside the frame-shaped slider 3, and the feeding mechanism 5 is located above the polishing mechanism 4, an adjusting mechanism is provided on the side of the polishing mechanism 4, and the adjusting mechanism is used to adjust the height of the polishing mechanism 4, the structure is simple, easy to manufacture and maintain, reduce equipment cost and failure rate, improve overall reliability, and can lower the height of the polishing mechanism 4 before flipping to prevent the differential housing from colliding with it, a flipping mechanism is provided on the side of the feeding mechanism 5, and the flipping mechanism is used to adjust the angle of the feeding mechanism 5, and the feeding mechanism 5 and the differential housing can be flipped during the movement of the frame-shaped slider 3 to the outside of the outer frame 1, which is convenient for observation and disassembly, and can also allow the residual polishing sand in the housing to fall back to the polishing frame 19 to avoid waste and pollution.

[0029] A storage cavity 9 is provided on the bottom surface of the frame-shaped slider 3, and the polishing mechanism 4 includes a base 10, which is movably installed inside the storage cavity 9. A polishing frame 19 is arranged above the base 10, and side ears 16 are installed at the four end corners of the polishing frame 19. A polishing rod 17 is fixedly installed on the surface of the side ear 16, and a composite spring 18 is installed at the bottom of the polishing rod 17. The bottom end of the composite spring 18 is connected to the base 10. The staff can pour a certain amount of polishing sand into the polishing frame 19 and place the differential housing inside the polishing frame 19. The polishing sand can polish the differential housing. At the same time, the setting of the composite spring 18 makes the polishing frame 19 have a buffering effect when working. The composite spring 18 can absorb and buffer these impact forces to avoid excessive impact forces being directly transmitted to the base 10 and the frame-shaped slider 3, thereby protecting the structure of the entire device and extending the service life of the equipment.

[0030] The adjustment mechanism includes a path groove, and both sides of the inner groove 2 are provided with path grooves, and the path groove includes a linear slide groove 7 and an inclined slide groove 8, and the linear slide groove 7 is arranged at the front end of the inclined slide groove 8. Active columns 14 are fixedly arranged on both sides of the base 10, and an active groove 15 is arranged on the side of the storage cavity 9. The surface of the active column 14 passes through the active groove 15, and the end of the active column 14 is slidably connected to the path groove. A limited groove 12 is provided on the rear surface of the storage cavity 9, and a guide column 13 is arranged inside the limited groove 12. A limited block 11 is fixedly installed at the bottom of the rear of the base 10, and the middle part of the limited block 11 is movably sleeved. On the surface of the guide column 13, an adjustment mechanism is set, and the movable column 14 slides in the path groove, so that when the frame-shaped slider 3 slides in the inner groove 2, the movable column 14 slides to different positions of the path groove, and the height of the base 10 will also change, thereby realizing the adjustment of the height of the polishing mechanism 4. The adjustment mechanism adopts the matching mode of the movable column 14 and the path groove, the limit block 11 and the guide column 13. The structure is relatively simple and easy to manufacture and maintain. This simple and effective structural design reduces the cost and failure rate of the equipment while ensuring the adjustment function, and improves the overall reliability of the equipment.

[0031] The feeding mechanism 5 includes a stabilizing plate 22, which is arranged just above the polishing frame 19. The stabilizing plate 22 is arranged just above the polishing frame 19, which can ensure the accuracy of the feeding position of the differential housing, so that the housing is within the optimal polishing range of the polishing frame 19, and improve the accuracy and consistency of polishing. A plurality of clamping mechanisms 24 are arranged at the bottom of the stabilizing plate 22, and a synchronization mechanism 23 is arranged on the top of the stabilizing plate 22. The synchronization mechanism 23 cooperates with the tops of the plurality of clamping mechanisms 24, and the synchronization mechanism 23 cleverly cooperates with the tops of the plurality of clamping mechanisms 24, and can accurately realize the synchronous action of the plurality of clamping mechanisms 24. During the polishing process of the differential housing, this synchronous action can drive the differential housing to rotate. Through the rotation of the housing, the polishing sand can be fully and evenly contacted with various parts of the housing surface, avoiding the occurrence of polishing dead angles, greatly improving the polishing efficiency of the differential housing, and at the same time, uniform polishing can effectively improve the flatness and finish of the housing surface, significantly improve the polishing quality, and ensure that the differential housing finally achieves a high-quality polishing effect.

[0032] The clamping mechanism 24 is similar to the internal chuck structure of a CNC machine tool. The clamping mechanism 24 is used to clamp the end of the differential housing. This mature structural design has high precision retention. It can accurately locate and clamp the end of the differential housing, ensuring that the differential housing is in an accurate position when clamped, providing a stable reference for subsequent polishing, which is beneficial to improving polishing accuracy and reducing uneven polishing caused by housing position deviation.

[0033] Side columns 21 are fixedly installed on both sides of the top of the frame-shaped slider 3, and gears 26 are rotatably installed inside the side columns 21. Rotating plates 25 are installed on both ends of the stabilizing plate 22 by bolts. The surface of the rotating plate 25 is fixedly connected to the gear 26 by a pin shaft, and the gear 26 is connected to the pin shaft of the rotating plate 25. When the angle of the feeding mechanism 5 needs to be adjusted, the gear 26 can be driven to rotate. Since the rotating plate 25 is connected to the stabilizing plate 22, the rotation of the gear 26 can drive the rotating plate 25 to rotate around the pin shaft, thereby realizing the angle flipping of the stabilizing plate 22 and the entire feeding mechanism 5.

[0034] A matching groove 27 is provided at the top of the frame-shaped slider 3, and the flip mechanism includes a rack 28, which is movably inserted in the matching groove 27 and meshed with the gear 26. A first connecting frame 29 is fixedly installed at the bottom of the rack 28, and a contraction groove 32 is provided at the bottom of the side column 21. A tension spring 33 is provided inside the contraction groove 32, and a first cylindrical rod 34 is connected to the end of the tension spring 33. The first cylindrical rod 34 is movably installed in the contraction groove 32 under the action of the tension spring 33, and a second rectangular rod 35 is fixedly installed at the other end of the first cylindrical rod 34. A second connecting frame 31 is fixedly installed on the top of the second rectangular rod 35. A connecting rod 30 is connected between the first connecting frame 29 and the second connecting frame 31 through a rotating shaft, and a third cylindrical rod 36 is fixedly installed on the other end of the second rectangular rod 35. The surface of the third cylindrical rod 36 movably passes through the frame-shaped slider 3 and the outer frame 1, and a disk is fixedly installed on the other end of the third cylindrical rod 36. Under the action of , the first cylindrical rod 34 will shrink inside the shrinkage groove 32. When the cylinder 6 pushes the frame-shaped slider 3 to move forward, the feeding mechanism 5 and the flipping mechanism will move forward synchronously. When the frame-shaped slider 3 moves to a certain position, the disc will be close to the surface behind the outer frame 1. When the frame-shaped slider 3 continues to move forward, since the position of the disc is fixed, the first cylindrical rod 34, the second rectangular rod 35 and the third cylindrical rod 36 will not continue to move forward, and the tension spring 33 will gradually be in a stretched state. At the same time, the second connecting frame 31 will fix the position of the bottom of the connecting rod 30, so that the connecting rod 30 will drive the rack 28 to move downward through the first connecting frame 29, and then use the meshing transmission of the rack 28 and the gear 26. When the rack 28 moves downward in the matching groove 27, it can drive the gear 26 meshing therewith to rotate. Since the gear 26 is connected to the rotating plate 25, the angle of the stabilizing plate 22 and the differential housing clamped thereon can be flipped.

[0035] A shaking motor 20 is installed at the bottom of the polishing frame 19. The shaking motor 20 can drive the polishing sand inside the polishing frame 19 to vibrate. The shaking motor 20 drives the polishing sand to vibrate, so that the contact between the polishing sand and the surface of the differential housing is more frequent and diversified. The vibration prompts the polishing sand to continuously change the contact angle and position with the housing surface, which can more effectively grind the tiny protrusions on the housing surface and fill scratches, thereby improving the flatness and smoothness of the surface, so that the differential housing obtains better polishing quality.

[0036] Working principle: First, the staff pours a proper amount of polishing sand into the polishing frame 19, and then places the differential housing in the polishing frame 19. At the same time, the multiple clamping mechanisms 24 at the bottom of the stabilizing plate 22 in the feeding mechanism 5 are used to accurately clamp the ends of the differential housing. Since the clamping mechanism 24 is similar to the internal chuck structure of a CNC machine tool, it has a high precision retention and can ensure that the differential housing is in an accurate position. Then the shaking motor 20 at the bottom of the polishing frame 19 is started, driving the polishing sand inside the polishing frame 19 to vibrate, and then the synchronous mechanism 23 at the top of the stabilizing plate 22 and the top of the multiple clamping mechanisms 24 are activated. With the cooperation of the parts, the differential housing is driven to rotate, so that the polishing sand can fully and evenly contact all parts of the housing surface to avoid polishing dead angles. After polishing is completed, the cylinder 6 on the back of the outer frame 1 is started, and the output end of the cylinder 6 pushes the frame-shaped slider 3 to slide in the inner groove 2, thereby driving the polishing mechanism 4 and the feeding mechanism 5 inside the frame-shaped slider 3 to move together. During the sliding process of the frame-shaped slider 3, the first cylindrical rod 34 of the flip mechanism will shrink inside the shrinkage groove 32 under the action of the tension spring 33, and the connecting rod 30 can push the rack 28 to the deepest part of the matching groove 27, and the angle of the flip mechanism will not change. The movable columns 14 on both sides of the base 10 slide in the path grooves, and the movable columns 14 will slide from the inclined slide grooves 8 to the linear slide grooves 7, so that the base 10 will move downward, the polishing mechanism 4 will move downward synchronously as a whole, and the differential housing will be separated from the inside of the polishing frame 19, and then the frame-shaped slider 3 will continue to move forward, and the disc will be close to the surface behind the outer frame 1. Since the position of the disc is fixed, the first cylindrical rod 34, the second rectangular rod 35 and the third cylindrical rod 36 will no longer move forward, and the tension spring 33 will be gradually stretched. At this time, the second connecting frame 31 fixes the position of the bottom of the connecting rod 30, and the connecting rod 30 is brought by the first connecting frame 29. The movable rack 28 moves downward, and the rack 28 meshes with the gear 26. When the rack 28 moves downward in the matching groove 27, it drives the gear 26 to rotate. Since the gear 26 is connected to the rotating plate 25, the rotating plate 25 drives the stabilizing plate 22 to rotate, thereby realizing the angular flipping of the feeding mechanism 5 and the differential housing clamped thereon. Finally, the differential housing will form a vertical state with the polishing frame 19. During the angular flipping process of the differential housing, the polishing sand remaining inside it will fall into the polishing frame 19 under the action of its own gravity. After the differential housing is flipped, it is convenient for the staff to observe and disassemble the differential housing.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A differential case surface polishing device, comprising an outer frame (1), characterized in that: An inner groove (2) is provided on the middle surface of the outer frame (1), a frame-shaped slider (3) is slidably mounted inside the inner groove (2), a cylinder (6) is mounted on the back of the outer frame (1), an output end of the cylinder (6) is connected to the frame-shaped slider (3), a polishing mechanism (4) and a feeding mechanism (5) are mounted inside the frame-shaped slider (3), and the feeding mechanism (5) is located above the polishing mechanism (4), an adjustment mechanism is arranged on the side of the polishing mechanism (4), the adjustment mechanism is used to adjust the height of the polishing mechanism (4), and a flipping mechanism is arranged on the side of the feeding mechanism (5), the flipping mechanism is used to adjust the angle of the feeding mechanism (5).

2. A differential case surface polishing device according to claim 1, characterized in that: The bottom surface of the frame-shaped slider (3) is provided with a storage cavity (9), and the polishing mechanism (4) comprises a base (10), the base (10) is movably mounted inside the storage cavity (9), a polishing frame (19) is arranged above the base (10), side ears (16) are mounted at four end corners of the polishing frame (19), a polishing rod (17) is fixedly mounted on the surface of the side ears (16), a composite spring (18) is mounted at the bottom of the polishing rod (17), and the bottom end of the composite spring (18) is connected to the base (10).

3. A differential case surface polishing device according to claim 2, characterized in that: The adjustment mechanism comprises a path groove, the path grooves are provided on both sides of the inner groove (2), the path grooves comprise a linear slide groove (7) and an inclined slide groove (8), the linear slide groove (7) being arranged at the front end of the inclined slide groove (8), movable columns (14) are fixedly provided on both sides of the base (10), a movable groove (15) is provided on the side of the storage cavity (9), the surface of the movable column (14) passes through the movable groove (15), and the end of the movable column (14) is slidably engaged in the path groove, a limiting groove (12) is provided on the rear surface of the storage cavity (9), a guide column (13) is provided inside the limiting groove (12), a limiting block (11) is fixedly installed on the bottom of the rear of the base (10), and the middle part of the limiting block (11) is movably sleeved on the surface of the guide column (13).

4. A differential case surface polishing device according to claim 3, characterized in that: The feeding mechanism (5) comprises a stabilizing plate (22), the stabilizing plate (22) being arranged directly above the polishing frame (19), a plurality of clamping mechanisms (24) being arranged in an array at the bottom of the stabilizing plate (22), a synchronizing mechanism (23) being arranged at the top of the stabilizing plate (22), and the synchronizing mechanism (23) being matched with the tops of the plurality of clamping mechanisms (24).

5. A differential case surface polishing device according to claim 4, characterized in that: The clamping mechanism (24) is similar to the internal chuck structure of a numerically controlled machine tool, and the clamping mechanism (24) is used to clamp the end of the differential housing.

6. A differential case surface polishing device according to claim 4, characterized in that: Side columns (21) are fixedly mounted on both sides of the top of the frame-shaped slider (3), a gear (26) is rotatably mounted inside the side columns (21), a rotating plate (25) is mounted on both ends of the stabilizing plate (22) via bolts, and a surface of the rotating plate (25) is fixedly connected to the gear (26) via a pin shaft.

7. A differential case surface polishing device according to claim 6, characterized in that: The top of the frame-shaped slider (3) is provided with a matching groove (27), the flip mechanism comprises a rack (28), the rack (28) is movably inserted into the matching groove (27), and the rack (28) is meshed with the gear (26), a first connecting frame (29) is fixedly installed at the bottom of the rack (28), a contraction groove (32) is provided at the bottom of the side column (21), a tension spring (33) is arranged inside the contraction groove (32), the end of the tension spring (33) is connected to a first cylindrical rod (34), and the first cylindrical rod (34) is movably moved under the action of the tension spring (33). The first cylindrical rod (34) is movably mounted in the contraction groove (32); a second rectangular rod (35) is fixedly mounted on the other end of the first cylindrical rod (34); a second connecting frame (31) is fixedly mounted on the top of the second rectangular rod (35); a connecting rod (30) is connected between the first connecting frame (29) and the second connecting frame (31) via a rotating shaft; a third cylindrical rod (36) is fixedly mounted on the other end of the second rectangular rod (35); a surface of the third cylindrical rod (36) movably penetrates the frame-shaped slider (3) and the outer frame (1); and a disc is fixedly mounted on the other end of the third cylindrical rod (36).

8. The differential case surface polishing device according to claim 2, characterized in that: A shaking motor (20) is installed at the bottom of the polishing frame (19), and the shaking motor (20) can drive the polishing sand inside the polishing frame (19) to vibrate.

Images