A carbon brush multi-angle chamfering device

Abstract

This utility model relates to the field of carbon brush processing technology, and in particular to a carbon brush multi-angle chamfering device. The carbon brush multi-angle chamfering device includes a base, a top plate mounted on top of the base, and a column fixedly mounted on the bottom of the top plate and connected to the base. A drive motor is fixedly mounted on the bottom of the base. A turntable is rotatably connected to the upper side wall of the base, and the turntable is fixedly connected to the output end of the drive motor. A clamping structure is mounted on the turntable, including a cross-shaped limiting frame fixedly mounted on the turntable, and a limiting plate mounted on the front end of the cross-shaped limiting frame. The upper end of the limiting plate is rotatably connected to the cross-shaped limiting frame. This utility model uses a grinding cylinder that moves at a uniform speed towards the rapidly rotating carbon brush, allowing for the grinding and chamfering of all four corners of the carbon brush in one pass, improving work efficiency. Simultaneously, the receiving groove at the bottom of the grinding cylinder, in conjunction with a negative pressure structure, collects the small carbon brush particles worn off during the grinding process, facilitating subsequent centralized recycling and reuse.

Description

Technical Field

[0001] This utility model relates to the field of carbon brush processing technology, and in particular to a carbon brush multi-angle chamfering device. Background Technology

[0002] Carbon brushes are key components in rotating electrical equipment such as motors and generators, enabling current conduction between stationary and rotating parts. Their manufacturing process requires strict control over precision, density, and electrical performance to ensure stable equipment operation. Chamfering the carbon brushes is a crucial step in ensuring assembly precision and safety during use. If the edges of square carbon brushes are not chamfered, they can easily scratch internal motor components during assembly and may also cause breakage due to stress concentration, affecting the stability of motor operation.

[0003] Traditional carbon brush chamfering equipment often uses a cutting method to chamfer carbon brushes in a single-sided or double-sided manner. To complete the chamfering of the four corners of a square carbon brush, the position of the carbon brush needs to be adjusted multiple times. In addition, the chamfered carbon brush needs to be ground again, which is a complicated process and affects work efficiency.

[0004] Therefore, it is necessary to provide a new carbon brush multi-angle chamfering device to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a new carbon brush multi-angle chamfering device.

[0006] The carbon brush multi-angle chamfering device provided by this utility model includes: a base, a top plate installed on the base, and a column fixedly installed at the bottom of the top plate and fixedly connected to the base; a drive motor fixedly installed at the bottom of the base; a turntable rotatably connected to the upper side wall of the base, and the turntable fixedly connected to the output end of the drive motor; a clamping structure installed on the turntable; the clamping structure includes a cross-shaped limiting frame fixedly installed on the turntable, and a limiting plate installed at the front end of the cross-shaped limiting frame; the upper end of the limiting plate rotatably connected to the cross-shaped limiting frame; a locking bolt threadedly connected to the lower end of the limiting plate; the end of the locking bolt inserted into the cross-shaped limiting frame and threadedly connected thereto; a liftable grinding cylinder installed above the cross-shaped limiting frame; grinding sand fixedly installed on the inner wall of the grinding cylinder; a receiving groove opened at the lower end of the grinding cylinder; and a negative pressure structure installed on the top plate to generate suction force for the receiving groove.

[0007] Preferably, the base has an annular groove, and multiple support rods are fixedly installed at the bottom of the turntable, with the lower ends of the multiple support rods inserted into the groove.

[0008] Preferably, one end of the support rod located in the rotating groove is rotatably connected to a roller, and the roller is in rolling connection with the rotating groove.

[0009] Preferably, the inner wall edges of the cross-shaped limiting frame are all chamfered.

[0010] Preferably, the lower opening of the grinding cylinder has a trumpet-shaped structure.

[0011] Preferably, the top of the top plate is equipped with a lifting structure for controlling the raising and lowering of the grinding cylinder. The lifting structure includes a cylinder fixedly installed on the side wall of the top plate. A piston rod is fixedly installed at the output end of the cylinder, and the lower end of the piston rod is fixedly connected to the upper end of the grinding cylinder.

[0012] Preferably, a crossbar is fixedly installed on the side wall of the grinding cylinder, and a sleeve sleeve that is fitted onto the column and slidably connected thereto is fixedly installed at the end of the crossbar.

[0013] Preferably, the negative pressure structure includes a negative pressure pump and a dust collection box fixedly installed on the top plate. The negative pressure pump is equipped with a suction pipe and a dust conveying pipe, and the end of the dust conveying pipe away from the negative pressure pump is inserted into the dust collection box. A hollow negative pressure ring is fixedly installed on the outer wall of the grinding cylinder, and multiple annularly distributed connecting pipes are fixedly installed between the negative pressure ring and the receiving groove. The negative pressure ring is connected to the receiving groove through the multiple connecting pipes. A telescopic pipe communicating with its interior is also fixedly installed on the negative pressure ring, and the upper end of the telescopic pipe is fixedly connected to and communicates with the suction pipe.

[0014] Compared with related technologies, the carbon brush multi-angle chamfering device provided by this utility model has the following beneficial effects:

[0015] This invention uses a grinding cylinder that moves at a uniform speed toward a rapidly rotating carbon brush, allowing all four corners of the carbon brush to be ground and chamfered in one go, thus improving work efficiency. At the same time, the receiving groove at the bottom of the grinding cylinder, in conjunction with a negative pressure structure, collects the small carbon brush particles that wear off during the grinding process, facilitating subsequent centralized recycling and reuse. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the carbon brush multi-angle chamfering device provided by this utility model;

[0017] Figure 2 for Figure 1 The diagram shows the structural layout of the base bottom.

[0018] Figure 3 for Figure 1 The diagram shows the structure of the negative pressure structure.

[0019] Figure 4 for Figure 1 A schematic diagram of a half-section of the grinding cylinder shown;

[0020] Figure 5 for Figure 1 The diagram shows the structure of the clamping structure.

[0021] The diagram is labeled as follows: 1. Base; 11. Rotary groove; 12. Column; 13. Top plate; 2. Drive motor; 21. Turntable; 22. Support rod; 221. Roller; 3. Clamping structure; 31. Cross-shaped limit frame; 32. Limiting plate; 33. Locking bolt; 4. Grinding cylinder; 41. Material receiving groove; 42. Grinding sand; 5. Lifting structure; 51. Cylinder; 52. Piston rod; 53. Cross bar; 54. Sleeve; 6. Negative pressure structure; 61. Negative pressure pump; 62. Dust suction pipe; 63. Dust conveying pipe; 64. Dust collection box; 65. Negative pressure ring; 66. Telescopic pipe; 67. Connecting pipe. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0024] Please see Figures 1 to 5 This utility model provides a carbon brush multi-angle chamfering device, which includes: a base 1, a top plate 13 mounted on the top of the base 1, and a column 12 fixedly mounted on the bottom of the top plate 13 and fixedly connected to the base 1; a drive motor 2 fixedly mounted on the bottom of the base 1; a turntable 21 rotatably connected to the upper side wall of the base 1, and the turntable 21 fixedly connected to the output end of the drive motor 2; a clamping structure 3 mounted on the turntable 21, the clamping structure 3 including a cross-shaped limiting frame 31 fixedly mounted on the turntable 21. The front end of the cross-shaped limiting frame 31 is equipped with a limiting plate 32. The upper end of the limiting plate 32 is rotatably connected to the cross-shaped limiting frame 31. The lower end of the limiting plate 32 is threaded with a locking bolt 33, and the end of the locking bolt 33 is inserted into the cross-shaped limiting frame 31 and threadedly connected to it. A lifting grinding cylinder 4 is installed above the cross-shaped limiting frame 31, and grinding sand 42 is fixedly installed on the inner wall of the grinding cylinder 4. A receiving groove 41 is opened at the lower end of the grinding cylinder 4, and a negative pressure structure 6 is installed on the top plate 13 to generate suction force for the receiving groove 41.

[0025] It should be noted that the cross-shaped limiting bracket 31 in this utility model is mainly used for clamping and limiting square carbon brushes. Different sizes of carbon brushes require specially designed cross-shaped limiting brackets 31. The abrasive 42 on the inner wall of the grinding cylinder 4 is used to round the edges of the carbon brush. The abrasive 42 must also be matched to the corresponding carbon brush. During the limiting process, use a tool to tighten the locking bolt 33 to separate it from the cross-shaped limiting bracket 31. Then, rotate the limiting plate 32 upwards to place the carbon brush in the cross-shaped limiting bracket 31. Rotate the limiting plate 32 upwards and screw the end of the locking bolt 33 into the cross-shaped limiting bracket 31 to limit the carbon brush. The four corners of the carbon brush need to be chamfered. With the edges exposed, the drive motor 2 drives the turntable 21 to rotate rapidly, and the grinding cylinder 4 descends at a constant speed. The abrasive 42 on the inner wall of the grinding cylinder 4 gradually contacts the carbon brush and performs a grinding and chamfering operation on its edges. All four corners of the carbon brush can be ground and chamfered at one time, improving work efficiency. At the same time, the receiving groove 41 at the bottom of the grinding cylinder 4 collects the small carbon brush particles that fall off during the grinding process. The negative pressure structure 6 at the top of the top plate 13 generates suction in the receiving groove 41, which sucks up and collects the small carbon brush particles generated during the grinding and chamfering process, avoiding dust. The collection of small carbon brush particles generated during the grinding and chamfering process facilitates subsequent centralized recycling and reuse.

[0026] The base 1 has an annular groove 11, and multiple support rods 22 are fixedly installed at the bottom of the turntable 21, with the lower ends of the multiple support rods 22 inserted into the groove 11. The support rods 22 provide additional support for the turntable 21, and the lower ends of the support rods 22 rotate along the groove 11, thereby improving the stability of the rotation of the turntable 21.

[0027] Furthermore, a roller 221 is rotatably connected to one end of the support rod 22 located in the rotating groove 11, and the roller 221 is in rolling connection with the rotating groove 11; the sliding friction between the lower end of the support rod 22 and the rotating groove 11 is changed to the rolling friction between the roller 221 and the rotating groove 11. The reduction of frictional resistance indirectly reduces the load on the drive motor 2, reduces the wear of the motor output shaft and bearings, and extends the service life of the motor.

[0028] It is worth noting that the inner wall edges of the cross-shaped limit frame 31 are all chamfered. In batch operations, operators need to frequently place carbon brushes. The chamfer on the inner wall edge of the limit frame is equivalent to forming a "guide slope". When the carbon brush is placed slightly off, the chamfered surface will guide the carbon brush to automatically slide into the correct limit position, which facilitates the installation and positioning of the carbon brush.

[0029] It is also worth noting that the lower opening of the grinding cylinder 4 has a trumpet-shaped structure. The sloping surface of the trumpet-shaped opening allows the carbon brush and the abrasive 42 to make progressive contact. In the initial stage of the descent of the grinding cylinder 4, the abrasive 42 at the edge of the trumpet opening first makes light contact with the edges and corners of the carbon brush and begins light grinding. As the grinding continues to descend, more abrasive 42 gradually participates in the grinding, and the intensity increases evenly. This progressive contact avoids damage to the edges and corners of the carbon brush from instantaneous impact, ensures that the grinding intensity of the four edges and corners is consistent, and further improves the uniformity and precision of the chamfer.

[0030] In the embodiments of this utility model, please refer to Figure 1 and Figure 3 The top of the top plate 13 is equipped with a lifting structure 5 for controlling the lifting of the grinding cylinder 4. The lifting structure 5 includes a cylinder 51 fixedly installed on the upper side wall of the top plate 13. A piston rod 52 is fixedly installed at the output end of the cylinder 51, and the lower end of the piston rod 52 is fixedly connected to the upper end of the grinding cylinder 4.

[0031] It should be noted that cylinder 51 controls the extension and retraction of piston rod 52, thereby controlling the uniform lifting and lowering of grinding cylinder 4, resulting in better stability.

[0032] The grinding cylinder 4 has a crossbar 53 fixedly installed on its side wall, and a sleeve 54 fixedly installed at the end of the crossbar 53 and slidably connected to the column 12. If the grinding cylinder 4 is only connected by the piston rod 52, it is prone to lateral swaying or angular deviation during the lifting process due to its own weight and grinding reaction force. This may result in uneven contact between the grinding sand 42 and the carbon brush corners, or even collision with the cross-shaped limit frame 31, damaging the equipment or the carbon brush. The sleeve 54 is fitted on the fixed column 12 to achieve rigid guidance, so that the lifting trajectory of the grinding cylinder 4 is strictly along the vertical direction of the column 12, completely limiting lateral displacement and angular tilt, and ensuring that the grinding cylinder 4 is always accurately aligned with the carbon brush below, providing a basic guarantee for uniform chamfering.

[0033] In the embodiments of this utility model, please refer to Figure 1 , Figure 3 and Figure 4 The negative pressure structure 6 includes a negative pressure pump 61 and a dust collection box 64 fixedly installed on the top plate 13. The negative pressure pump 61 is equipped with a dust suction pipe 62 and a dust conveying pipe 63, and the end of the dust conveying pipe 63 away from the negative pressure pump 61 is inserted into the dust collection box 64. A hollow negative pressure ring 65 is fixedly installed on the outer wall of the grinding cylinder 4, and multiple annularly distributed connecting pipes 67 are fixedly installed between the negative pressure ring 65 and the receiving groove 41. The negative pressure ring 65 is connected to the receiving groove 41 through the multiple connecting pipes 67. A telescopic pipe 66 connected to its interior is also fixedly installed on the negative pressure ring 65, and the upper end of the telescopic pipe 66 is fixedly connected to the dust suction pipe 62 and interconnected with it.

[0034] It should be noted that after the negative pressure pump 61 starts, it generates continuous negative pressure suction through the suction pipe 62, providing the core power for the entire dust collection system and ensuring that dust particles can be efficiently adsorbed. The carbon powder particles generated by grinding first fall into the receiving trough 41, and then enter the hollow negative pressure ring 65 through multiple annularly distributed connecting pipes 67. The annular design of the negative pressure ring 65, together with the multiple connecting pipes 67, can simultaneously suck dust from multiple positions in the receiving trough 41, avoiding local dust accumulation. The dust in the negative pressure ring 65 then enters the negative pressure pump 61 through the telescopic pipe 66 and the suction pipe 62. The dust transported by the negative pressure pump 61 is directly discharged into the dust collection box 64 through the dust conveying pipe 63, realizing unified dust collection, which not only avoids dust diffusion, but also provides convenience for subsequent recycling and reuse. The telescopic pipe 66 has a telescopic characteristic. When the grinding cylinder 4 moves up and down with the lifting structure 5, the telescopic pipe 66 can be stretched or contracted synchronously, always maintaining the sealed connection between the negative pressure ring 65 and the suction pipe 62, ensuring that the dust collection process is uninterrupted.

[0035] It is worth noting that a protective cover can be installed on the drive motor 2 to protect it. The drive motor 2 can be a Y-series three-phase asynchronous motor, which meets the power requirements of the equipment in this utility model. It has a moderate speed, simple structure, reliable operation, and convenient maintenance, and is suitable for long-term stable operation in the equipment. The cylinder 51 is model CQA63-50, which has smooth lifting, accurate positioning, good sealing and durability, and can adapt to the long-term reciprocating motion working state of the equipment.

[0036] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A carbon brush multi-angle chamfering device, comprising a base (1), a top plate (13) mounted on the base (1), and a column (12) fixedly connected to the base (1) at the bottom of the top plate (13), characterized in that: A drive motor (2) is fixedly installed at the bottom of the base (1). A turntable (21) is rotatably connected to the upper side wall of the base (1), and the turntable (21) is fixedly connected to the output end of the drive motor (2). A clamping structure (3) is installed on the turntable (21). The clamping structure (3) includes a cross-shaped limiting frame (31) fixedly installed on the turntable (21), and a limiting plate (32) is installed at the front end of the cross-shaped limiting frame (31). The upper end of the limiting plate (32) is connected to the cross-shaped limiting frame (31). The limiting plate (32) is rotatably connected to a locking bolt (33) at its lower end. The end of the locking bolt (33) is inserted into the cross-shaped limiting frame (31) and threadedly connected to it. A lifting grinding cylinder (4) is installed above the cross-shaped limiting frame (31). Grinding sand (42) is fixedly installed on the inner wall of the grinding cylinder (4). A receiving groove (41) is opened at the lower end of the grinding cylinder (4). A negative pressure structure (6) is installed on the top plate (13) to generate suction force for the receiving groove (41).

2. The carbon brush multi-angle chamfering device according to claim 1, characterized in that, The base (1) has a ring-shaped groove (11) and multiple support rods (22) are fixedly installed at the bottom of the turntable (21), with the lower ends of the multiple support rods (22) inserted into the groove (11).

3. The carbon brush multi-angle chamfering device according to claim 2, characterized in that, The support rod (22) is rotatably connected to a roller (221) at one end in the rotating groove (11), and the roller (221) is in rolling connection with the rotating groove (11).

4. The carbon brush multi-angle chamfering device according to claim 1, characterized in that, The inner wall edges of the cross-shaped limiting frame (31) are all chamfered.

5. The carbon brush multi-angle chamfering device according to claim 1, characterized in that, The lower opening of the grinding cylinder (4) has a trumpet-shaped structure.

6. The carbon brush multi-angle chamfering device according to claim 1, characterized in that, The top plate (13) is equipped with a lifting structure (5) for controlling the lifting of the grinding cylinder (4). The lifting structure (5) includes a cylinder (51) fixedly installed on the upper side wall of the top plate (13). A piston rod (52) is fixedly installed at the output end of the cylinder (51), and the lower end of the piston rod (52) is fixedly connected to the upper end of the grinding cylinder (4).

7. The carbon brush multi-angle chamfering device according to claim 1, characterized in that, A crossbar (53) is fixedly installed on the side wall of the grinding cylinder (4), and a sleeve (54) is fixedly installed at the end of the crossbar (53) and is slidably connected to the column (12).

8. The carbon brush multi-angle chamfering device according to claim 1, characterized in that, The negative pressure structure (6) includes a negative pressure pump (61) and a dust collection box (64) fixedly installed on the top plate (13). The negative pressure pump (61) is equipped with a suction pipe (62) and a dust conveying pipe (63), and the end of the dust conveying pipe (63) away from the negative pressure pump (61) is inserted into the dust collection box (64). A hollow negative pressure ring (65) is fixedly installed on the outer wall of the grinding cylinder (4), and multiple annularly distributed connecting pipes (67) are fixedly installed between the negative pressure ring (65) and the receiving groove (41). The negative pressure ring (65) is connected to the receiving groove (41) through the multiple connecting pipes (67). A telescopic pipe (66) communicating with its interior is also fixedly installed on the negative pressure ring (65), and the upper end of the telescopic pipe (66) is fixedly connected to the suction pipe (62) and communicates with each other.

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