Accurate arc grinding device for carbon brush
By designing a carbon brush precision arc grinding device and using mechanical drive and precise grinding of arc surfaces, the existing carbon brush grinding methods are solved, and efficient and precise carbon brush grinding and a clean and pollution-free production environment are achieved.
Patent Information
- Application Number
- CN202420610466.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-03-27
AI Technical Summary
The existing carbon brush grinding methods are inefficient and have poor accuracy, and a large amount of dust will be generated during the grinding process, affecting the production environment and the health of operators.
A carbon brush precision arc grinding device is designed, including an arc grinding box, linkage rod, drive mechanism and vacuum cleaner mechanism. Through mechanical driving and precise grinding of the arc surface, efficient and precise grinding of the carbon brush contact surface is achieved, and the grinding area is cleaned through the vacuum cleaner mechanism.
It improves the efficiency and accuracy of carbon brush polishing, reduces the complexity and time of manual operation, ensures the consistency between the contact surface and the current collector ring, is clean and pollution-free, and protects the health of operators.
Smart Images
Figure CN222680502U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of carbon brush processing, in particular to a carbon brush precise arc grinding device. Background Art
[0002] The existing method of grinding carbon brushes is to directly grind the contact surface of the carbon brush with coarse and fine grit sandpaper or to press the carbon brush evenly on the surface of the collector ring and pull the sandpaper to grind. The disadvantages of this treatment are as follows:
[0003] (1) Low efficiency. The grinding process is cumbersome and requires repeated debugging and grinding, which is time-consuming. Manual grinding has the problem of low efficiency.
[0004] (2) Poor precision. The national standard requires that the contact surface between the carbon brush and the collector ring cannot be less than 75%. When replacing multiple carbon brushes, if the curvature of the carbon brush surface is not well matched with the curvature of the collector ring, the contact resistance will increase, the surface will heat up, and in more serious cases, sparking may occur.
[0005] (3) At the same time, a large amount of dust and powder will be generated during the grinding process, which will cause serious harm to the operator's body and affect the production environment. Summary of the invention
[0006] The technical problem to be solved by the utility model is to provide a carbon brush accurate arc grinding device to replace manual grinding and improve grinding efficiency and precision.
[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: a carbon brush precise arc grinding device, including an arc grinding box, a fixed frame is provided in the arc grinding box, a limit block is provided on the fixed frame, a sliding hole matching with the linkage rod is provided on the limit block, a driving mechanism for slidingly driving the linkage rod is provided on the fixed frame, the other end of the linkage rod is connected to the grinding head, a grinding arc surface consistent with the curvature of the carbon brush is provided on one side of the grinding head, the grinding arc surface is used to grind the carbon brush, and at least one group of brush holders for fixing the carbon brush are provided in the arc grinding box, and the brush holders are installed in the arc grinding box through a bracket.
[0008] In a preferred embodiment, the driving mechanism includes a driving motor, a driving shaft rotatably mounted on a fixed frame, the driving motor drives the driving shaft, the end of the driving shaft is connected to a crank, a connecting rod is provided on the crank, the connecting rod is installed in a first rod end joint bearing, the first rod end joint bearing is connected to the second rod end joint bearing through a connecting rod, the two ends of the connecting shaft are respectively installed in the second rod end joint bearing and the third rod end bearing, and the third rod end bearing is installed at the end of the linkage rod.
[0009] In a preferred solution, the output end of the driving motor is connected to the input end of the reducer, and the driving shaft is connected to the output end of the reducer.
[0010] In a preferred solution, a mounting slot is provided on the crank, and the end of the connecting rod passes through the mounting slot and is fixed by a nut.
[0011] In a preferred solution, a dust collection mechanism is provided in the arc grinding box.
[0012] The utility model provides a carbon brush precise arc grinding device, which has the following beneficial effects:
[0013] 1. It is difficult to control the grinding angle in traditional direct manual arc grinding. This device can ensure the arc surface accuracy of the carbon brush contact surface by setting the grinding arc surface of the grinding head to be consistent with the arc of the carbon brush.
[0014] 2. The grinding process of the carbon brush needs to be debugged and polished repeatedly to ensure the fit with the collector ring surface, which requires a lot of repeated manpower operations. This device can grind multiple carbon brushes through mechanical drive, which increases work efficiency.
[0015] 3. By disassembling and replacing the grinding head and manufacturing a plurality of grinding heads of different sizes, it is theoretically possible to complete the arc surface grinding of the contact surface of the carbon brush adapted to the collector rings of various sizes.
[0016] 4. By setting up a dust collection mechanism, it can be clean and pollution-free to ensure the health of personnel. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 It is a schematic diagram of the internal structure of the utility model;
[0020] Figure 3 is a schematic diagram of the structure of the driving mechanism;
[0021] In the figure: arc grinding box 1, fixed frame 2, limit block 3, linkage rod 4, driving mechanism 5, grinding head 6, brush holder 7, bracket 8, dust suction mechanism 9, sliding hole 301, grinding arc surface 601, driving motor 501, driving shaft 502, crank 503, connecting rod 504, first rod end joint bearing 505, connecting rod 506, second rod end joint bearing 507, connecting shaft 508, third rod end bearing 509, reducer 510, mounting slot 511, nut 512. DETAILED DESCRIPTION
[0022] like Figures 1 to 3As shown, a carbon brush precise arc grinding device comprises an arc grinding box 1, the top of the arc grinding box 1 is open, which is convenient for installing the carbon brush, and a top cover can be set at the positioning opening position, a fixing frame 2 is arranged in the arc grinding box 1, the fixing frame 2 is an "L"-shaped structure, and is installed on the bottom plate of the arc grinding box 1 by bolts, a limit block 3 is arranged on the fixing frame 2, and a sliding hole 301 cooperating with a linkage rod 4 is arranged on the limit block 3, and the sliding hole 301 is arranged horizontally. In specific use, a linear bearing can be arranged in the sliding hole 301 to provide sliding support for the linkage rod 4, and a driving mechanism 5 for slidingly driving the linkage rod 4 is provided on the fixing frame 2, and the linkage rod 4 is driven by the driving mechanism 5 to slide left and right, and the other end of the linkage rod 4 is connected to a grinding head 6. In specific use, the grinding head 6 is provided with a threaded hole, and the end of the linkage rod 4 is provided with an external thread. The linkage rod 4 is connected to the grinding head 6 by a thread, so that the grinding head 6 can be detached, which is convenient for replacing the grinding head 6, and the grinding head 6 can be replaced according to different types of carbon brushes. A grinding arc surface 601 consistent with the curvature of the carbon brush is provided on one side of the grinding head 6, and the grinding arc surface 601 is used to grind the carbon brush. At least one group of brush holders 7 for fixing the carbon brushes are provided in the grinding box 1, and the brush holders 7 are installed in the grinding box 1 through the bracket 8. In specific use, multiple groups of brush holders 7 can be set and distributed in a straight line along the moving path of the grinding head 6. Multiple groups of carbon brushes can be ground at the same time, thereby improving the grinding efficiency.
[0023] The driving mechanism 5 can be an electric push rod or a hydraulic cylinder. Figure 2 and 3 As shown, the driving mechanism 5 includes a driving motor 501, and a driving shaft 502 is rotatably mounted on the fixed frame 2. The driving motor 501 drives the driving shaft 502. The end of the driving shaft 502 is connected to the crank 503. A connecting rod 504 is provided at the end of the crank 503. The connecting rod 504 is arranged perpendicular to the crank 503. The connecting rod 504 is installed in a first rod end joint bearing 505. The first rod end joint bearing 505 is connected to the second rod end joint bearing 507 through a connecting rod 506. Both ends of the connecting shaft 508 are respectively installed in the second rod end joint bearing 507 and the third rod end bearing 509. The third rod end bearing 509 is installed at the end of the linkage rod 4.
[0024] During specific use, the output end of the driving motor 501 is connected to the input end of the reducer 510 , and the driving shaft 502 is connected to the output end of the reducer 510 . The reducer 510 is a gear reducer to regulate the rotation speed of the driving shaft 502 .
[0025] Preferably, the crank 503 is provided with a mounting slot 511, which is a bar-shaped hole. The end of the connecting rod 504 passes through the mounting slot 511 and is fixed by a nut 512, thereby realizing a detachable connection of the connecting rod 504. At the same time, the distance between the connecting rod 504 and the rotation center of the crank 503 can be adjusted, which is convenient for adjustment.
[0026] Preferably, in specific use, a dust suction mechanism 9 can be provided in the arc grinding box 1. The dust suction mechanism 9 can be an existing small vacuum cleaner, or a dust suction box can be provided in the arc grinding box 1. A negative pressure fan is provided on one side of the dust suction box, and a dust suction port is provided on the other side. A filter is provided between the dust suction port and the negative pressure fan. The dust suction mechanism 9 is provided to absorb the carbon powder generated by the grinding carbon brush.
[0027] The working principle of this device is: the driving motor 501 is used to rotate the driving shaft 502, providing a rotational torque to drive the crank 503 to rotate, and the rotational torque is converted into a radial push-pull force through the transmission of the connecting rod 504, the first rod end joint bearing 505, the connecting rod 506, the second rod end joint bearing 507 and the third rod end bearing 509, so that the linkage rod 4 moves linearly along the sliding hole 301, driving the grinding head 6 to reciprocate and grind the carbon brush installed on the brush holder 7.
[0028] The traditional direct manual arc grinding is difficult to control the grinding angle. The present device can ensure the arc surface accuracy of the carbon brush contact surface by setting the grinding arc surface 601 of the grinding head 6 to be consistent with the arc of the carbon brush. The grinding process of the carbon brush requires repeated debugging and repeated grinding to ensure the fit with the collector ring surface, which requires a lot of repeated manual operations. The present device can grind multiple carbon brushes through mechanical drive, which increases work efficiency.
Claims
1. A carbon brush precise arc grinding device, characterized in that: The invention comprises an arc grinding box (1), wherein a fixing frame (2) is provided inside the arc grinding box (1), a limit block (3) is provided on the fixing frame (2), a sliding hole (301) matched with a linkage rod (4) is provided on the limit block (3), a driving mechanism (5) for slidingly driving the linkage rod (4) is provided on the fixing frame (2), the other end of the linkage rod (4) is connected to a grinding head (6), one side of the grinding head (6) is provided with a grinding arc surface (601) consistent with the arc of a carbon brush, and the grinding arc surface (601) is used to grind the carbon brush, and at least one group of brush holders (7) for fixing the carbon brush are provided inside the arc grinding box (1), and the brush holder (7) is installed on the arc grinding box (1) through a bracket (8).
2. A carbon brush precise arc grinding device according to claim 1, characterized in that: The driving mechanism (5) comprises a driving motor (501), a driving shaft (502) rotatably mounted on a fixing frame (2), the driving motor (501) driving the driving shaft (502), the end of the driving shaft (502) being connected to a crank (503), a connecting rod (504) being provided on the crank (503), the connecting rod (504) being mounted in a first rod end joint bearing (505), the first rod end joint bearing (505) being connected to a second rod end joint bearing (507) via a connecting rod (506), the two ends of the connecting shaft (508) being respectively mounted in the second rod end joint bearing (507) and a third rod end bearing (509), the third rod end bearing (509) being mounted at the end of a linkage rod (4).
3. A carbon brush precise arc grinding device according to claim 2, characterized in that: The output end of the driving motor (501) is connected to the input end of the reducer (510), and the driving shaft (502) is connected to the output end of the reducer (510).
4. The carbon brush precise arc grinding device according to claim 2, characterized in that: The crank (503) is provided with a mounting slot hole (511), and the end of the connecting rod (504) passes through the mounting slot hole (511) and is fixed by a nut (512).
5. The carbon brush precise arc grinding device according to claim 1, characterized in that: A dust collecting mechanism (9) is provided in the arc grinding box (1).