An automobile part polishing device

By designing a worm gear assembly and a motor-driven grinding device, automated grinding of automotive parts surfaces has been achieved, solving the problems of low efficiency and unstable quality of manual grinding, and improving grinding quality and efficiency.

CN224322894UActive Publication Date: 2026-06-05WUXI INSTITUTE OF TECHNOLOGY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUXI INSTITUTE OF TECHNOLOGY
Filing Date
2025-07-22
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

In the current technology, the polishing of automotive parts mainly relies on manual operation, which results in low polishing efficiency and unstable quality, making it difficult to guarantee consistency.

Method used

A grinding device for automotive parts was designed, which uses a worm gear assembly and a motor-driven grinding roller that can rotate back and forth and adjust its height within a certain angle range to achieve automated grinding.

Benefits of technology

It improves grinding efficiency and quality stability. The grinding roller can rotate back and forth within a certain angle range to evenly grind the surface of parts. It can also be adjusted vertically to adapt to grinding needs at different heights. Automated operation improves continuity and applicability.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224322894U_ABST
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Abstract

The utility model relates to the technical field of automobile parts processing, especially to a kind of automobile parts polishing device, including base, adjusting box is arranged on the base, the output shaft of the front end setting of adjusting box is outwardly protruding, the outside shaft end of output shaft is sleeved with the installation box of coaxial heart rotation, second motor is arranged in the installation box, the top output end of second motor is upwardly protruding transmission shaft, the top end of this transmission shaft is slidably sleeved with rotary guide bushing by the form of key groove cooperation, the top of rotary guide bushing is provided with connecting pipe, connecting pipe is protruding from the top of installation box, and the polishing roller that is synchronously rotated with it is sleeved on the pipe wall of installation box outside by the connecting pipe, the utility model presents polishing device, polishing roller can rotate to and fro within certain angle range, uniform polishing part plate surface, polishing process is automatically carried out, duration is long, with stability, can improve polishing quality.
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Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, and in particular to an automotive parts grinding device. Background Technology

[0002] After a car is scratched or bumped, its body panels need to be repaired, and the first step is grinding. Currently, car surface grinding is mainly done manually. The quality of manual grinding largely depends on the worker's skill level and experience. Grinding requires the worker to hold the grinder close to the area to be ground for a long time and swing the grinder back and forth to ensure that the surface roughness of the ground area is as consistent as possible. This working method is prone to fatigue and makes it difficult to guarantee grinding efficiency and quality consistency. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a grinding device for automotive parts.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A grinding device for automotive parts includes a base, on which an adjustment box is provided. An output shaft is provided at the front end of the adjustment box and extends outward. A mounting box that rotates coaxially is sleeved on the outer end of the output shaft.

[0006] In a preferred embodiment, the adjusting box contains a worm gear assembly, which consists of a worm wheel and a worm that maintain meshing and transmission. A connecting rod is rotatably mounted on the eccentric position of the worm wheel's disc. A first motor is located outside the adjusting box, and a drive shaft located at the output end of the first motor extends into the adjusting box and is connected to the worm gear assembly for transmission.

[0007] In a preferred embodiment, an output shaft is provided on the inner front of the adjustment box, and a swing arm is rotatably mounted on the output shaft. The movable end of the swing arm is connected to the movable end of the connecting rod. The output shaft extends outward from the shaft, and the outer end of the shaft is inserted into the bottom of the mounting box.

[0008] The mounting box contains a second motor. The top output end of the second motor extends upward to form a drive shaft. The top end of the drive shaft is slidably fitted with a rotating guide sleeve via a keyway. The top of the rotating guide sleeve is provided with a connecting pipe. The connecting pipe extends from the top of the mounting box, and a grinding roller that rotates synchronously with it is sleeved on the pipe wall outside the mounting box. The mounting box also contains a cylinder. The pneumatic rod at the output end of the cylinder is connected to a U-shaped fork via a straight rod. The U-shaped fork is inserted into and adapted to the concave surface of the outer wall of the rotating guide sleeve.

[0009] In a preferred embodiment, the mounting box is provided with a mounting bracket, and the drive shaft at the output end of the second motor extends upward from the mounting bracket. A linear bearing for the drive shaft to slide up and down is installed in the mounting bracket, and the cylinder is fixedly connected to the mounting bracket.

[0010] In a preferred embodiment, the top end of the drive shaft is provided with a spline, and the inner wall of the rotating guide sleeve is provided with a keyway that matches the spline.

[0011] In a preferred embodiment, an annular groove is formed on the outer circumferential surface of the rotating guide sleeve, and the U-shaped fork is inserted into the annular groove.

[0012] The beneficial effects of this utility model are:

[0013] The grinding device proposed in this solution solves the problems of low efficiency and inconsistent grinding quality in the grinding of automotive parts. The grinding roller can rotate back and forth within a certain angle range to uniformly grind the surface of the parts. The grinding process is automated, has a long duration, and is stable. The grinding roller can be adjusted along the axial direction to cover a wider area of ​​the parts surface, enhancing its applicability and improving the grinding quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the grinding device proposed in this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the adjustment box of the grinding device proposed in this utility model;

[0016] Figure 3 For the present utility model in Figure 1 An enlarged schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. Base; 2. Adjustment box; 3. First motor; 4. Output shaft; 5. Mounting box; 6. Second motor; 7. Mounting bracket; 8. Cylinder; 9. Grinding roller; 10. Worm gear assembly; 11. Swing arm; 12. Connecting rod; 13. Drive shaft; 14. Spline; 15. Straight rod; 16. U-shaped fork; 17. Rotary guide sleeve; 18. Connecting pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In this embodiment, refer to Figure 1-3A grinding device for automotive parts includes a base 1, an adjustment box 2 on the base 1, an output shaft 4 at the front end of the adjustment box 2 extending outward, and a coaxially rotating mounting box 5 sleeved on the outer shaft end of the output shaft 4.

[0020] As attached Figure 2 As shown, the regulating box 2 is equipped with a worm gear assembly 10, which consists of a worm wheel and a worm that maintain meshing and transmission. A connecting rod 12 is rotatably mounted on the eccentric position of the worm wheel disc. A first motor 3 is installed outside the regulating box 2. The drive shaft at the output end of the first motor 3 extends into the regulating box 2 and is connected to the worm gear assembly 10 for transmission.

[0021] An output shaft 4 is provided on the inner front of the adjustment box 2. A swing arm 11 is rotatably mounted on the output shaft 4. The movable end of the swing arm 11 is connected to the movable end of the connecting rod 12. The output shaft 4 extends outward, and the outer end of the shaft is inserted into the bottom of the mounting box 5.

[0022] Driven by the first motor 3, the worm gear rotates, and the connecting rod 12 causes the swing arm 11 to reciprocate around its fulcrum. The outer end of the output shaft 4 is connected to the mounting box 5, meaning that the swing arm 11 and the mounting box 5 maintain synchronous rotation through the shaft of the output shaft 4. Therefore, with the start of the first motor 3, the mounting box 5 can be controlled to swing back and forth within a certain range around the output shaft 4.

[0023] The mounting box 5 houses a second motor 6. The top output end of the second motor 6 extends upwards from a drive shaft 13. A rotating guide sleeve 17 is slidably fitted onto the top end of the drive shaft 13 via a keyway. The fit between the drive shaft 13 and the rotating guide sleeve 17 is shown in the attached diagram. Figure 3 As shown, a spline 14 is provided at the top of the drive shaft 13, and a keyway adapted to the spline 14 is provided on the inner wall of the rotating guide sleeve 17. The rotating guide sleeve 17 is fitted onto the drive shaft 13 from top to bottom, and the rotating guide sleeve 17 will rotate synchronously with the drive shaft 13.

[0024] A connecting pipe 18 is provided at the top of the rotating guide sleeve 17. The connecting pipe 18 extends from the top of the mounting box 5, and a grinding roller 9 that rotates synchronously with the connecting pipe 18 is sleeved on the pipe wall outside the mounting box 5. The grinding roller 9 rotates in the same direction as the rotating guide sleeve 17, that is, it is driven by the second motor 6 to eventually drive the grinding roller 9 to rotate, thereby achieving the purpose of grinding the surface of the automotive parts using the grinding roller 9.

[0025] The mounting box 5 also contains a cylinder 8, as shown in the attached diagram. Figure 1 Or attached Figure 3As shown, the pneumatic rod at the output end of cylinder 8 is connected to a U-shaped fork 16 via a straight rod 15. The U-shaped fork 16 is inserted into and fitted to the concave surface of the outer wall of the rotating guide sleeve 17. Regarding the structure of this rotating guide sleeve 17, in conjunction with the attached... Figure 3 A ring groove is formed on the outer circumference of the rotating guide sleeve 17, and a U-shaped fork 16 is inserted into this groove. The U-shaped fork 16, inserted into the rotating guide sleeve 17, serves two purposes: firstly, its presence does not affect the rotation of the rotating guide sleeve 17; secondly, through the push of the cylinder 8, the U-shaped fork 16 can control the raising and lowering of the rotating guide sleeve 17, thereby adjusting the position of the top grinding roller 9. The grinding roller 9 can be raised and lowered within a certain height range in the vertical direction, thus adapting to the grinding needs of parts with different height dimensions, and also allowing for localized grinding of different areas on the upper and lower parts of the parts.

[0026] It should be noted that the mounting box 5 has a mounting bracket 7 inside: the drive shaft 13 at the output end of the second motor 6 extends upward from the mounting bracket 7, and a linear bearing for the drive shaft 13 to slide up and down is installed inside the mounting bracket 7; in addition, the cylinder 8 is fixedly connected to the mounting bracket 7. The function of the mounting bracket 7 is to stably support the drive shaft 13 and ensure that the drive shaft 13 is always in a vertical position.

[0027] When the first motor 3 starts, it can control the grinding roller 9 to rotate back and forth within a certain angle range with the output shaft 4 as the fulcrum, so as to evenly grind the surface of the parts and plates, improve the grinding quality, and the grinding process is automated, with a long duration and stability. Through the control of the cylinder 8, the axial position of the grinding roller 9 can be adjusted, thereby covering a wider range of the surface of the parts and plates, and enhancing its applicability.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A grinding device for automotive parts, characterized in that, Includes a base (1), on which an adjustment box (2) is provided. An output shaft (4) is provided at the front end of the adjustment box (2) and extends outward. A coaxially rotating mounting box (5) is sleeved on the outer shaft end of the output shaft (4). A second motor (6) is provided inside the mounting box (5). A transmission shaft (13) extends upward from the top output end of the second motor (6). A rotating guide sleeve (17) is slidably sleeved on the top end of the transmission shaft (13) through a keyway. A connecting pipe (18) is provided at the top of the mounting box (5). The connecting pipe (18) extends from the top of the mounting box (5), and a grinding roller (9) that rotates synchronously is sleeved on the pipe wall outside the mounting box (5). A cylinder (8) is also provided inside the mounting box (5). A pneumatic rod provided at the output end of the cylinder (8) is connected to a U-shaped fork (16) through a straight rod (15). The U-shaped fork (16) is inserted into the concave surface of the outer side wall of the rotating guide sleeve (17) and is adapted to it.

2. The automotive parts grinding device according to claim 1, characterized in that, The adjustment box (2) is equipped with a worm gear assembly (10), which consists of a worm wheel and a worm that maintain meshing transmission. A connecting rod (12) is rotatably mounted on the eccentric position of the worm wheel disc.

3. The automotive parts grinding device according to claim 2, characterized in that, The adjustment box (2) is equipped with a first motor (3) on its exterior. The drive shaft of the output end of the first motor (3) extends into the adjustment box (2) and is connected to the worm gear assembly (10) for transmission.

4. The automotive parts grinding device according to claim 2, characterized in that, An output shaft (4) is provided on the inner front of the adjustment box (2). A swing arm (11) is rotatably mounted on the output shaft (4). The movable end of the swing arm (11) is connected to the movable end of the connecting rod (12). The output shaft (4) extends outward, and the outer end of the shaft is inserted into the bottom of the mounting box (5).

5. The automotive parts grinding device according to claim 1, characterized in that, The mounting box (5) is provided with a mounting frame (7) inside. The transmission shaft (13) provided at the output end of the second motor (6) extends upward from the mounting frame (7). The mounting frame (7) is provided with a linear bearing for the transmission shaft (13) to slide up and down. The cylinder (8) is fixedly connected to the mounting frame (7).

6. The automotive parts grinding device according to claim 5, characterized in that, The top end of the drive shaft (13) is provided with a spline (14), and the inner wall of the rotating guide sleeve (17) is provided with a keyway that matches the spline (14).

7. The automotive parts grinding device according to claim 1, characterized in that, A ring groove is formed on the outer circumferential surface of the rotating guide sleeve (17), and the U-shaped fork (16) is inserted into the ring groove.