Pre-grinding device for junction surface of carbon brush and commutator

Abstract

The utility model relates to the field of carbon brush processing, and particularly discloses a pre-grinding device for a junction surface of a carbon brush and a commutator, which comprises a motor, a motor clamping plate, a motor fixing block, a grinding wheel connecting rod, a grinding wheel, a tool side plate, a guide key, a carbon brush square box and a bottom plate, the motor fixing block is fixed on the bottom plate, and the motor is clamped by the motor clamping plate and installed on the motor fixing block. One end of the grinding wheel connecting rod penetrates through the motor fixing block and is connected with the motor, the grinding wheel is installed at one end of the grinding wheel connecting rod, the guide key is fixed to the bottom plate and is perpendicular to the length direction of the grinding wheel connecting rod, the tool side plate is installed on the bottom plate and located on one side of the grinding wheel, and a guide groove is formed in the bottom of the tool side plate. The carbon brush square box is installed on the tool side plate, traditional waterproof abrasive paper is replaced with the grinding wheel for grinding, the grinding efficiency can be improved, the carbon brush with the radian can be ground, and the running-in time of the carbon brush and a motor is omitted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the carbon brush processing field, concretely relates to a carbon brush and commutator combination surface prepolishing device. BACKGROUND

[0002] Carbon brush (Carbon brush) also called electric brush, as a kind of sliding contact piece, is widely applied in many electrical equipment. Carbon brush is mainly in product application material quality graphite, impregnated graphite, metal (containing copper, silver) graphite. Carbon brush is the fixed part and rotating part between energy or signal transmission device of motor or generator or other rotating machinery, it is generally pure carbon plus solidifying agent, appearance is generally square, card in metal support, inside spring is tightly pressed on the rotating shaft, motor rotates, and electric energy is delivered to coil by commutator, since its main component is carbon, it is called carbon brush, it is easy to wear, and should be regularly maintained and replaced, and the accumulated carbon is cleaned.

[0003] The edge of the carbon brush and commutator combination surface of the carbon brush of the DC motor will appear collapse, corner defect or slight crack when demolding, transportation, pressure contact power line taking and placing, these defects make the motor run with abnormal sound and large carbon brush spark, therefore, the carbon brush and commutator combination surface need to be prepolished to repair the above defects for the carbon brush with the defects;

[0004] During the motor running process, the carbon brush and commutator combination surface starts to constantly adapt with the commutator surface, and finally adapts to the completely consistent state as shown in the figure. Figure 5

[0005] At present, the prepolishing mode of carbon brush is that water-resistant sandpaper is placed on a flat plate, and the carbon brush and commutator combination surface are prepolished on the water-resistant sandpaper by hand, and the surface of the prepolished carbon brush tends to be flat, as shown in the figure. Figure 4 In this state, the motor needs to run for a long time, and the carbon brush and commutator combination surface can be adapted to the completely consistent ideal state as shown in the figure. Figure 5 UTILITY MODEL CONTENTS

[0006] The utility model is to solve the technical problems in the above background art, such as 1, prepolish by hand, poor consistency and low efficiency: 2, large consumption of traditional carbon brush prepolishing water-resistant sandpaper;3, the surface of the prepolished carbon brush tends to be flat, and noise is easily generated when the carbon brush passes the commutator groove, and the adaptation period of the commutator and the carbon brush is greatly prolonged, and the motor is difficult to reach the best running state in a short time;Make the following technical scheme:

[0007] ​​The utility model provides a kind of pre-grinding device of carbon brush and commutator combination surface, including motor, motor clamping plate, motor fixed block, grinding wheel connecting rod, grinding wheel, tool side plate, guide key, carbon brush square box and bottom plate, the motor fixed block is fixed on the bottom plate, the motor is clamped by the motor clamping plate and is installed on the motor fixed block, the grinding wheel connecting rod one end passes through the motor fixed block and is connected with the motor, the grinding wheel is installed at the grinding wheel connecting rod one end, the guide key is fixed on the bottom plate and direction is perpendicular with the length direction of the grinding wheel connecting rod, the tool side plate is installed on the bottom plate and is located at the one side of the grinding wheel, the tool side plate bottom is provided with guide slot, the guide key is located in the guide slot, the tool side plate is provided with carbon brush square box installation slot, the carbon brush square box is installed in the carbon brush square box installation slot, the carbon brush square box middle is provided with carbon brush placing slot, and the carbon brush placing slot height corresponds with the height of the grinding wheel.

[0008] Preferably, the bottom plate is provided with a waste groove, and the waste groove is located below the grinding wheel.

[0009] Preferably, the bottom plate is provided with two tool side plate mounting holes, and the tool side plate is provided with two waist-shaped holes at corresponding positions, and the waist-shaped holes are provided with compression screws, and the bottom of the compression screw is threadedly connected with the tool side plate mounting hole.

[0010] Preferably, the carbon brush square box and the carbon brush square box installation slot include, but are not limited to, buckle connection, fitting connection and flange connection.

[0011] Preferably, the outer surface of the grinding wheel is lined with diamond sand with a particle size of 1000-1200 mesh.

[0012] The utility model discloses a kind of pre-grinding device of carbon brush and commutator combination surface, including motor, motor clamping plate, motor fixed block, grinding wheel connecting rod, grinding wheel, tool side plate, guide key, carbon brush square box and bottom plate, the motor fixed block is fixed on the bottom plate, the motor is clamped by the motor clamping plate and is installed on the motor fixed block, the grinding wheel connecting rod one end passes through the motor fixed block and is connected with the motor, the grinding wheel is installed at the grinding wheel connecting rod one end, the guide key is fixed on the bottom plate and direction is perpendicular with the length direction of the grinding wheel connecting rod, the tool side plate is installed on the bottom plate and is located at the one side of the grinding wheel, the tool side plate bottom is provided with guide slot, the guide key is located in the guide slot, the tool side plate is provided with carbon brush square box installation slot, the carbon brush square box is installed in the carbon brush square box installation slot, the carbon brush square box middle is provided with carbon brush placing slot, and the carbon brush placing slot height corresponds with the height of the grinding wheel.

[0013] 1, by grinding wheel to replace traditional water-resistant sandpaper to grind, not only can improve grinding efficiency, also can polish out the carbon brush with camber, save carbon brush and motor running-in time.

[0014] 2, by setting waste groove in the bottom of grinding wheel, can collect the debris in the grinding process through waste groove, avoid debris splashing.

[0015] 2, by compression screw to be fixed with tool side plate on base, make the dismounting of tool side plate more convenient, adjust the position of tool side plate.

[0016] 3, by carbon brush square box and carbon brush square box installation slot detachable connection, can replace corresponding size carbon brush square box according to different models and sizes of carbon brush, improve the adaptability of pre-grinding device.

[0017] 4, by using the grinding wheel of outer surface lining diamond sand, can make the service life of grinding wheel longer, and it is also very convenient to clean up. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a structural diagram showing the connection between the bottom plate and the tooling side plate of this utility model;

[0020] Figure 3 This is a cross-sectional view of the tooling side plate in this practical information.

[0021] Figure 4 The image shows the carbon brush grinding process after grinding with water-resistant sandpaper in the background technology.

[0022] Figure 5 This is a diagram illustrating the ideal state of carbon brush grinding in the background art.

[0023] In the diagram: 1. Motor; 2. Motor clamp; 3. Motor fixing block; 4. Grinding wheel extension rod; 5. Grinding wheel; 6. Tooling side plate; 6-1. Guide groove; 6-2. Carbon brush box mounting groove; 6-3. Waist-shaped hole; 7. Guide key; 8. Carbon brush box; 8-1. Carbon brush placement groove; 9. Base plate; 9-1. Tooling side plate mounting hole; 9-2. Waste trough; 9-3. Side plate mounting hole; 10. Clamping screw; 11. Carbon brush in unbroken state; 12. Carbon brush after break-in; 13. Commutator. Detailed Implementation

[0024] 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.

[0025] In the description of this utility model, it should be understood that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The connection methods described by the terms "fixed connection" and "fixed setting" include, but are not limited to, "welding," "riveting," "adhesion," and "threaded connection." The terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0026] The terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0027] Embodiment one

[0028] Referring to Figures 1-3 A kind of pre-grinding device of carbon brush and commutator joint surface, including motor 1, motor clamp plate 2, motor fixed block 3, sand wheel connecting rod 4, sand wheel 5, tool side plate 6, guide key 7, carbon brush square box 8 and bottom plate 9, motor fixed block 3 is fixed on bottom plate 9, motor 1 is clamped by motor clamp plate 2 and is installed on motor fixed block 3, sand wheel connecting rod 4 one end passes through motor fixed block 3 and is connected with motor 1, sand wheel 5 is clamped by bolt, is installed at the front end of sand wheel connecting rod, bottom plate 9 is provided with waste groove 9-2, waste groove 9-2 is located directly below sand wheel 5;

[0029] Guide key 7 is fixed in waste groove 9-2 one side, and the direction of guide key 7 is perpendicular to the length direction of sand wheel connecting rod 4, the bottom of tool side plate 6 is provided with guide slot 6-1, tool side plate 6 is installed on bottom plate 9 by the sliding connection between guide slot 6-1 and guide key 7, tool side plate 6 is provided with carbon brush square box installation slot 6-2, carbon brush square box 8 is installed in carbon brush square box installation slot 6-2, carbon brush square box 8 is provided with carbon brush placing groove 8-1 in the middle, and the height of carbon brush placing groove 8-1 is consistent with the height of sand wheel 5.

[0030] In actual operation, S1, first select the sand wheel 5 corresponding to the size of pre-grinding carbon brush, then install it;

[0031] S2, insert the carbon brush into the carbon brush square box 8, then adjust the distance between tool side plate 6 and sand wheel 5 to adjust the grinding amount.

[0032] S3, start motor 1, motor 1 drives sand wheel 5 to rotate, then polish the carbon brush.

[0033] The pre-grinding tool proposed in the present application uses sand wheel 5 to replace traditional water-resistant sandpaper for grinding, which not only improves the grinding efficiency, but also grinds the carbon brush with an arc, eliminating the running-in time of the carbon brush and the motor.

[0034] Embodiment two

[0035] Preferably, two tool side plate mounting holes 9-3 are arranged on the bottom plate 9, two waist-shaped holes 6-3 are arranged on the tool side plate 6 in a corresponding position, a pressing screw 10 is arranged in the waist-shaped hole 6-3, the bottom of the pressing screw 10 is threadedly connected with the tool side plate mounting hole 9-3, the tool side plate 6 is fixed through the pressing screw 10, the tool side plate 6 is convenient to disassemble and assemble, and the position of the tool side plate 6 is convenient to adjust.

[0036] Embodiment three

[0037] Preferably, the carbon brush square box 8 and the carbon brush square box mounting groove 6-2 include but are not limited to buckle connection, fitting connection and flange connection, the carbon brush square box 8 and the carbon brush square box mounting groove 6-2 are detachably connected, the carbon brush square box 8 of a corresponding size can be replaced according to carbon brushes of different models and sizes, and the adaptability of the pre-grinding device is improved.

[0038] Embodiment four

[0039] Preferably, the outer surface of the grinding wheel 5 is lined with diamond sand with a particle size of 1000-1200 mesh, the grinding wheel 5 with the outer surface lined with diamond sand can make the service life of the grinding wheel longer, and cleaning is also very convenient.

Claims

1. A kind of carbon brush and commutator combination surface prepolishing device, including motor (1), motor clamp plate (2), motor fixed block (3), sand wheel interface rod (4), sand wheel (5), tool side plate (6), guide key (7), carbon brush square box (8) and bottom plate (9), it is characterized in that, The motor fixed block (3) is fixed on the bottom plate (9), the motor (1) is clamped by the motor clamp plate (2) and installed on the motor fixed block (3), one end of the grinding wheel connecting rod (4) passes through the motor fixed block (3) and is connected with the motor (1), the grinding wheel (5) is installed at one end of the grinding wheel connecting rod (4), the guide key (7) is fixed on the bottom plate (9) and the direction is perpendicular to the length direction of the grinding wheel connecting rod (4), the tool side plate (6) is installed on the bottom plate (9) and located on one side of the grinding wheel (5), the bottom of the tool side plate (6) is provided with a guide groove (6-1), the guide key (7) is located in the guide groove (6-1), the tool side plate (6) is provided with a carbon brush square box mounting groove (6-2), the carbon brush square box (8) is installed in the carbon brush square box mounting groove (6-2), the carbon brush square box (8) is provided with a carbon brush placing groove (8-1) in the middle, and the height of the carbon brush placing groove (8-1) corresponds to the height of the grinding wheel (5).

2. A pre-wearing device for the commutator / brush interface according to claim 1, characterized in that, The bottom plate (9) is provided with a waste groove (9-2), and the waste groove (9-2) is located below the grinding wheel (5).

3. A pre-wearing device for the carbon brush-commutator interface according to claim 1, characterized in that, The bottom plate (9) is provided with two tool side plate mounting holes (9-3), the tool side plate (6) is provided with two waist-shaped holes (6-3) at the corresponding positions, the waist-shaped holes (6-3) are provided with compression screws (10), and the bottom of the compression screws (10) is screwed with the tool side plate mounting holes (9-3).

4. A pre-wearing device for the commutator segment- carbon brush interface according to claim 1, characterized in that, The carbon brush square box (8) and the carbon brush square box mounting groove (6-2) include but are not limited to buckle connection, chimeric connection and flange connection.

5. A pre-wearing device for the commutator segment- carbon brush interface according to claim 1, characterized in that, The outer surface of the grinding wheel (5) is lined with diamond sand with a particle size of 1000-1200 mesh.

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