A polishing device for motor pinion machining
By designing an automated grinding device, a servo motor drives a screw to lift the rotating drum, automatically separating the pinion gear from the grinding balls. This solves the problem of low efficiency in manual separation in existing technologies, improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIBIN JINHUI MACHINERY MANUFACTURING CO LTD
- Filing Date
- 2025-09-11
- Publication Date
- 2026-08-04
AI Technical Summary
In existing technologies, the separation of the grinding beads from the gear in the motor pinion relies on manual labor or simple mechanical structures, resulting in low production efficiency.
A grinding device comprising a base box, a rotating barrel, and a fixed column was designed. A servo motor drives a screw to move a lifting frame, which automatically separates the pinion and grinding balls after the rotating barrel is raised. The separation is achieved automatically through a grid plate.
It improved production efficiency, reduced manual operation steps, reduced the labor intensity of workers, avoided damage to small gears caused by manual sorting, improved product qualification rate, and reduced material costs.
Smart Images
Figure CN224587751U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of grinding devices, specifically relating to a grinding device for machining small gears of motors. Background Technology
[0002] As a key component in precision transmission systems, the machining accuracy and surface quality of motor pinions directly affect the transmission efficiency, operational stability, and service life of the motor. With the rapid development of new energy vehicles, industrial robots, and smart homes, the market demand for motor pinions has exploded, simultaneously placing more stringent requirements on their machining accuracy, production efficiency, and environmental performance. However, traditional grinding processes, when handling batch processing of pinions, rely on manual labor or simple mechanical structures for separating the grinding beads from the gears; for example, manual separation via a sieve is required after grinding, resulting in low production efficiency. Utility Model Content
[0003] (1) Technical problems to be solved
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a grinding device for processing small gears of motors, which aims to solve the problem that the separation of grinding beads and gears in the existing technology relies on manual or simple mechanical structures, such as manual separation through a screen after grinding, resulting in low production efficiency.
[0005] (2) Technical solution
[0006] To solve the above-mentioned technical problems, this utility model provides a grinding device for processing small gears of motors, including a base box, a rotating barrel, and a fixed column. The fixed barrel is rotatably mounted on the upper surface of the base box, and the rotating barrel is detachably installed inside the fixed barrel. A connecting column is vertically fixed inside the rotating barrel, and a fixed rod is rotatably connected to the upper end of the connecting column. A lifting frame is rotatably connected to the end of the fixed rod away from the connecting column. The lifting frame has an L-shaped structure, and the other end of the lifting frame is movably connected to the fixed column. The fixed column is vertically arranged beside the fixed barrel. The bottom of the rotating barrel has a grid plate, and a fixing block protrudes from the upper part of the outer wall of the rotating barrel. A mating hole is vertically opened on the upper part of the outer wall of the fixed barrel, and the fixing block slides into the mating hole.
[0007] Preferably, a drive screw is vertically rotatably mounted inside the fixed column, and the drive screw is threadedly connected to the lifting frame.
[0008] Preferably, a servo motor is fixedly installed inside the fixed column, and the servo motor is connected to the drive screw.
[0009] Preferably, a rotating disk is fixedly installed on the bottom end face of the fixed column, a rotating motor is fixedly connected below the rotating disk, a base plate is fixedly connected to the bottom of the rotating motor, and the base plate is fixedly connected to the side wall of the base box.
[0010] Preferably, the upper surface of the bottom box is recessed to form an inner groove, and the bottom of the fixing bucket is embedded in the inner groove.
[0011] Preferably, a drive motor is fixedly installed inside the bottom box, and the drive motor is fixedly connected to the center of the bottom of the fixed barrel.
[0012] Preferably, discharge pipes are distributed around the lower outer wall of the fixed barrel.
[0013] (3) Beneficial effects
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] This device automatically separates the pinion gear from the grinding balls using a bottom grid plate after the rotating drum rises. No manual intervention is required; the separation process is rapid and efficient, significantly shortening the production cycle and greatly improving overall production efficiency to meet the explosive growth in market demand for motor pinions. The automated separation and collection functions reduce manual operation, lower the labor intensity of workers, and avoid potential damage to the pinion gear during manual sorting, thus improving product qualification rates. Furthermore, the reusability of the grinding balls reduces material costs, effectively lowering production costs. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the fixed bucket and bottom box structure;
[0019] Figure 3 This is a schematic diagram of the rotating barrel and the grid plate in their separated state.
[0020] Figure 4 This is a schematic diagram of the fixed column and lifting frame structure.
[0021] The labels in the attached diagram are as follows: 1. Base box; 2. Rotary disc; 3. Fixed barrel; 4. Rotating barrel; 5. Lifting frame; 6. Fixed column; 7. Drive motor; 8. Discharge pipe; 9. Inner groove; 10. Mating hole; 11. Fixed block; 12. Fixed rod; 13. Mesh plate; 14. Connecting column; 15. Drive screw; 16. Servo motor; 17. Base plate; 18. Rotary motor. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] This specific embodiment is a grinding device for machining small gears of an electric motor, and its structural schematic diagram is shown below. Figure 1 , Figure 2 As shown, the assembly includes a base box 1, a rotating drum 4, and a fixed column 6. A fixed drum 3 is rotatably mounted on the upper surface of the base box 1, and the rotating drum 4 is detachably installed inside the fixed drum 3. An inner groove 9 is recessed on the upper surface of the base box 1, and the bottom of the fixed drum 3 is embedded in the inner groove 9. A drive motor 7 is fixedly installed inside the base box 1, and the drive motor 7 is fixedly connected to the center of the bottom of the fixed drum 3. Discharge pipes 8 are distributed around the lower outer wall of the fixed drum 3.
[0024] Reference Figure 3 , Figure 4 Inside the rotating barrel 4, a connecting column 14 is vertically fixed. A fixing rod 12 is rotatably connected to the upper end of the connecting column 14. A lifting frame 5 is rotatably connected to the end of the fixing rod 12 away from the connecting column 14. The lifting frame 5 has an L-shaped structure, and a fixing column 6 is movably connected to the other end of the lifting frame 5. The fixing column 6 is vertically positioned beside the fixed barrel. The bottom of the rotating barrel 4 has a mesh plate 13. A fixing block 11 protrudes from the upper part of the outer wall of the rotating barrel 4. A mating hole 10 is vertically opened on the upper part of the outer wall of the fixed barrel 3, and the fixing block 11 slides into the mating hole 10. Inside the fixing column 6, a driving screw 15 is vertically rotatably installed, and the driving screw 15 is threadedly connected to the lifting frame 5.
[0025] A servo motor 16 is fixedly installed inside the fixed column 6, and the servo motor 16 is connected to the drive screw 15. A rotating disk 2 is fixedly installed on the bottom end face of the fixed column 6, and a rotating motor 18 is fixedly connected below the rotating disk 2. A base plate 17 is fixedly connected to the bottom of the rotating motor 18, and the base plate 17 is fixedly connected to the side wall of the base box 1.
[0026] Working principle: The small gear to be processed is placed into the rotating barrel 4 along with the grinding ball. At this time, the rotating barrel 4 is detachably installed inside the fixed barrel 3. The rotating barrel 4 is initially positioned and installed in the fixed barrel 3 by sliding the fixing block 11 on the outer wall of the rotating barrel 4 into the mating hole 10 on the outer wall of the fixed barrel 3. At the same time, the recessed groove 9 formed on the upper surface of the base box 1 provides stable support for the fixed barrel 3, ensuring the stability of the device during the grinding process.
[0027] The drive motor 16 inside the base box 1 starts, driving the fixed barrel 3 to rotate. Since the rotating barrel 4 is installed inside the fixed barrel 3, the rotating barrel 4 rotates synchronously. Inside the rotating barrel 4, the upper end of the vertically fixed connecting column 14 is rotatably connected to the fixed rod 12, and the other end of the fixed rod 12 is rotatably connected to the L-shaped lifting frame 5. One end of the lifting frame 5 is movably connected to the fixed column 6 vertically set beside the fixed barrel 3. During the rotation of the rotating barrel 4, the grinding balls and the pinion gears collide and rub against each other fully inside the rotating barrel 4, achieving multi-faceted synchronous grinding, removing burrs, oxide layers and other defects from the surface of the pinion gears, and improving their surface quality.
[0028] After grinding is completed, the servo motor inside the fixed column 6 starts, driving the drive screw 15 to rotate. Since the drive screw 15 is threadedly connected to the lifting frame 5, under the action of threaded transmission, the lifting frame 5 moves upward along the direction of the drive screw 15, which in turn drives the connecting column 14 and the rotating barrel 4 to rise through the fixed rod 12. After the rotating barrel 4 rises, its bottom grid plate 13 is exposed. At this time, the pinion gear is trapped inside the rotating barrel 4 because its size is larger than the aperture of the grid plate 13, while the grinding balls flow out through the grid plate 13 into the fixed barrel 3.
[0029] The discharge pipes 8, distributed around the lower outer wall of the fixed barrel 3, are used to discharge the grinding balls flowing out of the rotating barrel 4. The discharge pipes 8 can be connected to a special collection container to achieve centralized recycling of the grinding balls for subsequent reuse. At the same time, the polished small gears can be directly removed from the rotating barrel 4 to complete the entire processing flow.
[0030] All technical features in this embodiment can be freely combined according to actual needs.
[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.
Claims
1. A grinding device for machining small gears of an electric motor, comprising a base box (1), a rotating barrel (4), and a fixed column (6), characterized in that, A fixed barrel (3) is rotatably mounted on the upper surface of the bottom box (1), and the rotating barrel (4) is detachably installed inside the fixed barrel (3); A connecting column (14) is vertically fixed inside the rotating barrel (4). A fixed rod (12) is rotatably connected to the upper end of the connecting column (14). A lifting frame (5) is rotatably connected to the end of the fixed rod (12) away from the connecting column (14). The lifting frame (5) has an L-shaped structure. A fixed column (6) is movably connected to the other end of the lifting frame (5). The fixed column (6) is vertically arranged on the side of the fixed barrel. The bottom of the rotating barrel (4) has a grid plate (13), and a fixing block (11) protrudes from the upper part of the outer wall of the rotating barrel (4). A mating hole (10) is vertically opened on the upper part of the outer wall of the fixing barrel (3), and the fixing block (11) slides into the mating hole (10).
2. The grinding device for machining small gears of an electric motor according to claim 1, characterized in that, The fixed column (6) is vertically rotatably mounted inside, and the drive screw (15) is threadedly connected to the lifting frame (5).
3. The grinding device for machining small gears of an electric motor according to claim 2, characterized in that, A servo motor (16) is fixedly installed inside the fixed column (6), and the servo motor (16) is connected to the drive screw (15).
4. The grinding device for machining small gears of an electric motor according to claim 1, characterized in that, A rotating disk (2) is fixedly installed on the bottom end face of the fixed column (6). A rotating motor (18) is fixedly connected below the rotating disk (2). A base plate (17) is fixedly connected to the bottom of the rotating motor (18). The base plate (17) is fixedly connected to the side wall of the base box (1).
5. A grinding device for machining small gears of an electric motor according to claim 1, characterized in that, The upper surface of the bottom box (1) is recessed to form an inner groove (9), and the bottom of the fixed bucket (3) is embedded in the inner groove (9).
6. A grinding device for machining small gears of an electric motor according to claim 5, characterized in that, A drive motor (7) is fixedly installed inside the bottom box (1), and the drive motor (7) is fixedly connected to the bottom center of the fixed bucket (3).
7. A grinding device for machining small gears of an electric motor according to claim 1, characterized in that, The lower outer wall of the fixed barrel (3) is surrounded by discharge pipes (8).