Carbon brush end face grinding device

Abstract

The utility model provides a carbon brush end face grinding device which comprises a guide rail, an end face grinding wheel, a pushing air cylinder, a tooth limiting plate, a positioning air cylinder and a pressing device, a sliding groove is formed in the guide rail, and a containing opening is formed in one side of the sliding groove to contain the end face grinding wheel. A pressing device is arranged at one end of the guide rail and used for pressing and fixing the carbon brush entering the sliding groove. The pushing air cylinder is arranged on one side of the guide rail, a mounting seat is arranged on a sliding table of the pushing air cylinder, a tooth limiting plate is arranged on the mounting seat, a limiting groove is formed in one end of the tooth limiting plate, and the tooth limiting plate is driven by a positioning air cylinder to move horizontally, so that the limiting groove and one end of a carbon brush notch are embedded and horizontally pressed and positioned. The pushing block is arranged on the side, away from the end face grinding wheel, of the tooth limiting plate and attached to one side of the carbon brush, so that the pushing air cylinder drives the carbon brush to move in the sliding groove through the tooth limiting plate, the carbon brush makes contact with the end face grinding wheel, end face grinding is achieved, the overall structure is simple, positioning is stable, and the machining quality is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbon brush grinding, and in particular relates to an end surface grinding device applied to some carbon brushes with gaps. Background Art

[0002] Carbon brushes are an important sliding contact in the generator excitation system, which plays the role of transmitting the excitation current to the rotor excitation winding. After the initial forming of the carbon brush, according to the production requirements, further thickness processing is required. In the traditional carbon brush end surface processing structure (such as Figure 1 As shown in the figure, the push rod is used to push the carbon brush to grind the end face. When some carbon brushes with gaps are ground using this processing structure, the carbon brushes will tilt under the friction force of the end face grinding wheel (such as Figure 2 As shown in the figure), the carbon brush becomes stuck and cannot be fed normally, which eventually affects the processing quality of the carbon brush. Therefore, it is necessary to improve the existing problems. Utility Model Content

[0003] In view of the above problems, the utility model discloses a carbon brush end face grinding device, which adopts a tooth limiting method to enable the carbon brush (with a notch) to be fed smoothly during end face grinding, thereby solving the problem that the carbon brush end face grinding device in the prior art cannot be applied to some carbon brushes with a notch.

[0004] The specific technical solutions are as follows:

[0005] A carbon brush end face grinding device comprises a guide rail, an end face grinding wheel, a push cylinder, a tooth limit plate, a positioning cylinder and a clamping device, wherein a slide groove for accommodating the displacement of the carbon brush is provided on the guide rail, and the upper end of the carbon brush located in the slide groove is higher than the slide groove, and a receiving opening is provided on one side of the slide groove on the guide rail to accommodate the end face grinding wheel; the clamping device is provided at one end of the guide rail, and the clamping device presses down and fixes the top end of the carbon brush entering the slide groove; the push cylinder is provided on one side of the guide rail, and a mounting seat is provided on the slide table of the push cylinder. The tooth limit plate is horizontally arranged on the mounting seat, and one end of the tooth limit plate is provided with a plurality of limit grooves which are arranged horizontally and matched with one end of the carbon brush notch. The other end of the tooth limit plate is driven to translate by a positioning cylinder installed on the mounting seat, so that the limit groove is embedded in one end of the carbon brush notch and is horizontally pressed and positioned. A push block is provided on the side of the tooth limit plate away from the end face grinding wheel, and the push block is fitted with one side of the carbon brush, so that the push cylinder drives the carbon brush to move in the slide groove through the tooth limit plate, thereby contacting the end face grinding wheel to achieve end face grinding.

[0006] Furthermore, the clamping device includes a pressing plate and a clamping cylinder. The pressing plate is horizontally arranged above one end of the guide rail. The pressing plate is driven to rise and fall by the clamping cylinder installed at the bottom of the guide rail, so that the pressing plate presses down and fixes the top end of the carbon brush entering the slide groove.

[0007] Furthermore, guide rods are provided on both sides of the bottom of the pressing plate, and the guide rods penetrate the guide rails longitudinally to guide the pressing plate.

[0008] Furthermore, one end of the end face grinding wheel is driven to rotate by a motor, and the other end surface of the end face grinding wheel is flush with the inner wall of the slide groove, thereby achieving grinding processing on the end face of the carbon brush.

[0009] Furthermore, the width of the chute is adapted to the lengths of the two ends of the carbon brush.

[0010] Furthermore, a sliding opening is provided at the bottom end of the slide groove and is used to accommodate the carbon brush braid.

[0011] The beneficial effects of the utility model are embodied in:

[0012] The utility model adopts a tooth limiting method, so that the carbon brush (with a notch) can maintain stable movement during end face grinding without tilting, has a simple overall structure, stable positioning, and effectively improves processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the traditional carbon brush end face processing structure.

[0014] Figure 2 The present invention is a schematic diagram of the structure of a carbon brush with a notch in the prior art when it is stuck during grinding.

[0015] Figure 3 It is a schematic diagram of the front structure of the utility model.

[0016] Figure 4 It is a schematic diagram of the back structure of the utility model.

[0017] Figure 5 It is a structural schematic diagram of the middle tooth limit plate and the carbon brush in the present invention when they cooperate.

[0018] Guide rail 1, slide groove 10, accommodating opening 101, slide opening 102, end grinding wheel 2, push cylinder 3, mounting seat 31, tooth limiting plate 4, limiting groove 41, push block 42, positioning cylinder 5, pressing plate 6, guide rod 61, clamping cylinder 7, carbon brush 8. DETAILED DESCRIPTION

[0019] In order to make the technical solution of the utility model clearer, the utility model is further described below in conjunction with the accompanying drawings. Any equivalent replacement of the technical features of the technical solution of the utility model and any solution derived from conventional reasoning shall fall within the protection scope of the utility model. The fixed connection and fixed setting mentioned in the utility model are all common connection methods in the mechanical field, including welding, bolt and nut connection, and screw connection.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] like Figure 3-4 As shown, this embodiment provides a carbon brush end face grinding device, which is mainly used for end face grinding of some carbon brushes 8 with notches. The end face grinding device includes a guide rail 1, an end face grinding wheel 2, a push cylinder 3, a tooth limit plate 4, a positioning cylinder 5 and a clamping device. The guide rail 1 is provided with a slide groove 10 for accommodating the displacement of the carbon brush 8, and the upper end of the carbon brush located in the slide groove 10 is higher than the slide groove 10, the width of the slide groove 10 is adapted to the length of the two ends of the carbon brush, and the bottom of the slide groove 10 is provided with a slide opening 102 for accommodating the carbon brush braid.

[0022] An accommodating opening 101 is provided on the guide rail 1 on one side of the slide groove 10 to accommodate the end face grinding wheel 2. One end of the end face grinding wheel 2 is driven to rotate by a motor, and the other end surface of the end face grinding wheel 2 is flush with the inner wall of the slide groove 10. The carbon brush 8 is displaced in the slide groove 10 to achieve grinding of the end face of the carbon brush.

[0023] A clamping device is arranged on one end of the guide rail 1, and the clamping device presses down and fixes the top end of the carbon brush entering the slide groove 10; the pushing cylinder 3 is arranged on one side of the guide rail 1, and a mounting seat 31 is arranged on the slide table of the pushing cylinder 3, and a tooth limiting plate 4 is horizontally arranged on the mounting seat 31, and a plurality of limiting grooves 41 adapted to one end of the carbon brush notch are arranged horizontally at one end of the tooth limiting plate 4, and the other end of the tooth limiting plate 4 is driven to translate by a positioning cylinder 5 installed on the mounting seat 31, so that the limiting groove 41 is embedded with one end of the carbon brush notch and is horizontally clamped and positioned, and a pushing block 42 is provided on the side of the tooth limiting plate 4 away from the end face grinding wheel 2, and the pushing block 42 is in contact with one side of the carbon brush 8, so that the pushing cylinder 3 drives the carbon brush to move in the slide groove 10 through the tooth limiting plate 4, thereby contacting the end face grinding wheel 2 to realize end face grinding.

[0024] In this embodiment, the clamping device includes a pressing plate 6 and a clamping cylinder 7. The pressing plate 6 is horizontally arranged above one end of the guide rail 1. The pressing plate 6 is driven to rise and fall by the clamping cylinder 7 installed at the bottom of the guide rail 1, and guide rods 61 are provided on both sides of the bottom of the pressing plate 6. The guide rods 61 all penetrate the guide rail 1 longitudinally and guide the pressing plate 6, so that the pressing plate 6 presses the top end of the carbon brush 8 entering the slide groove 10 downward and fixes it.

[0025] The working principle of the utility model is as follows: when the carbon brush enters the slide groove 10 of the guide rail 1 from the previous process, the pressing cylinder 7 retreats from the extended state, drives the pressing plate 6 downward and presses the carbon brush 8 to prevent the carbon brush from shaking and affecting the positioning of the tooth limit plate 4; then the tooth positioning cylinder 5 extends out, drives the tooth limit plate 4 forward, and after the tooth limit plate 4 is in place, it is engaged with the raised part of one end of the carbon brush through its limit groove 41, such as Figure 5 As shown, horizontal clamping positioning is achieved, and then the clamping cylinder 7 is extended to drive the pressing plate 6 to lift. At this time, the pushing cylinder 3 moves and pushes the carbon brush 8 to move toward the end grinding wheel 2 through the tooth limit plate 4 to perform end grinding.

[0026] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A carbon brush end face grinding device, characterized in that: The invention comprises a guide rail (1), an end face grinding wheel (2), a push cylinder (3), a tooth limit plate (4), a positioning cylinder (5) and a clamping device. The guide rail (1) is provided with a slide groove (10) for accommodating the displacement of a carbon brush (8), and the upper end of the carbon brush located in the slide groove (10) is higher than the slide groove (10). The guide rail (1) is provided with a receiving opening (101) on one side of the slide groove (10) to accommodate the end face grinding wheel (2). The clamping device is provided at one end of the guide rail (1), and the clamping device presses down and fixes the top end of the carbon brush entering the slide groove (10). The push cylinder (3) is provided on one side of the guide rail (1), and a mounting seat (31) is provided on the slide table of the push cylinder (3). The tooth limit plate (4) is horizontally arranged on the mounting seat (31), and one end of the tooth limit plate (4) is provided with a plurality of limit grooves (41) which are arranged in a transverse manner and are matched with one end of the carbon brush notch. The other end of the tooth limit plate (4) is driven to move in a translational manner by a positioning cylinder (5) mounted on the mounting seat (31), so that the limit groove (41) is embedded with one end of the carbon brush notch and is horizontally pressed and positioned. A push block (42) is provided on the side of the tooth limit plate (4) away from the end face grinding wheel (2), and the push block (42) is in contact with one side of the carbon brush (8), so that the push cylinder (3) drives the carbon brush to move in the slide groove (10) through the tooth limit plate (4), thereby contacting the end face grinding wheel (2) to achieve end face grinding.

2. A carbon brush end face grinding device as claimed in claim 1, characterized in that: The clamping device comprises a clamping plate (6) and a clamping cylinder (7). The clamping plate (6) is horizontally arranged above one end of the guide rail (1). The clamping plate (6) is driven to rise and fall by the clamping cylinder (7) installed at the bottom of the guide rail (1), so that the clamping plate (6) clamps and fixes the top end of the carbon brush (8) entering the slide groove (10) downward.

3. A carbon brush end face grinding device as claimed in claim 2, characterized in that: Guide rods (61) are provided on both sides of the bottom of the pressing plate (6), and the guide rods (61) penetrate the guide rail (1) longitudinally and guide the pressing plate (6).

4. A carbon brush end face grinding device as claimed in claim 1, characterized in that: One end of the end surface grinding wheel (2) is driven to rotate by a motor, and the other end surface of the end surface grinding wheel (2) is flush with the inner wall of the slide groove (10), thereby achieving grinding processing on the end surface of the carbon brush (8).

5. A carbon brush end face grinding device as claimed in claim 1, characterized in that: The width of the slide groove (10) is adapted to the length of the two ends of the carbon brush.

6. A carbon brush end face grinding device as claimed in claim 5, characterized in that: The bottom end of the slide groove (10) is provided with a slide opening (102) for accommodating a carbon brush braid.

Images