Carbon brush end face grinding device

Abstract

The present disclosure relates to a carbon brush end face grinding device, which comprises a device body, a clamping fixing device, a grinding assembly, a pushing assembly and a sliding assembly. The clamping fixing device is connected to the device body, and is used for fixing new carbon brushes and old carbon brushes on the device body and arranging them side by side in a first direction. The grinding assembly comprises a driving piece, a cutter shaft and a profiling abutting shaft, both of which extend along a second direction and are arranged side by side in the first direction, the cutter shaft is used for contacting the end to be ground of the new carbon brush, and the profiling abutting shaft is used for contacting the profiled end of the old carbon brush. The pushing assembly is used for moving the cutter shaft and the profiling abutting shaft to abut the new carbon brush and the old carbon brush respectively at the same time. The pushing assembly is connected to the sliding assembly, and the sliding assembly can drive the pushing assembly to move along the first direction, so that the cutter shaft can grind the end to be ground of the new carbon brush into the same arc shape as the profiled end of the old carbon brush.

Description

Technical Field

[0001] This disclosure relates to the field of carbon brush processing tools, and more specifically, to a carbon brush end face grinding device. Background Technology

[0002] Currently, carbon brushes are widely used in electric motors and generators. During generator excitation system maintenance, it is often necessary to replace old carbon brushes with new ones that have little remaining wear. However, the ends of new carbon brushes are flat and have not been broken in with the generator rotor slip rings, resulting in a small contact area. This can easily lead to sparking or even arcing during generator operation. Therefore, when replacing generator carbon brushes, the ends of the new carbon brushes need to be ground or cut to form an arc-shaped end face that conforms to the slip ring.

[0003] In related technologies, the main method for pre-treating the arc-shaped end face of carbon brushes is grinding, including manual grinding and machine grinding. Machine grinding utilizes a grinding device designed with a rotating or reciprocating mechanism consisting of sandpaper belt, grinding disc, grinding ring, and arc-shaped surface. However, adjusting the angle between the carbon brush and the grinding wheel is cumbersome, making it very difficult to grind an arc-shaped end face that matches the slip ring. Summary of the Invention

[0004] The purpose of this disclosure is to provide a carbon brush end face grinding device to solve the technical problems existing in the related art.

[0005] To achieve the above objectives, this disclosure provides a carbon brush end face grinding apparatus, comprising:

[0006] device body;

[0007] A clamping and fixing device is connected to the device body and is used to fix a new carbon brush and an old carbon brush on the device body and arrange them side by side in a first direction.

[0008] A grinding assembly includes a drive member, a cutter shaft, and a contouring abutment shaft. The cutter shaft and the contouring abutment shaft both extend along a second direction and are arranged side by side in a first direction. The cutter shaft is used to contact the end of the new carbon brush to be ground, and the contouring abutment shaft is used to contact the end of the old carbon brush to be contoured. The drive member can drive the cutter shaft to grind the new carbon brush.

[0009] The push assembly is connected to both the cutter shaft and the contouring abutment shaft. The push assembly is used to drive the cutter shaft and the contouring abutment shaft to move so as to simultaneously abut against the new carbon brush and the old carbon brush, respectively.

[0010] A sliding component is disposed on the device body, and the pushing component is connected to the sliding component. The sliding component can drive the pushing component to move along the first direction.

[0011] Optionally, the pushing assembly includes a support plate, a connecting rod, and an elastic element. The contouring abutment shaft and the cutter shaft are both disposed on the support plate. The first end of the connecting rod is rotatably connected to the sliding assembly around a first rotation axis, and the second end of the connecting rod is rotatably connected to the support plate around a second rotation axis. The two ends of the elastic element are respectively connected to the first end of the connecting rod and the sliding assembly, and the elastic element can generate a force that drives the first end of the connecting rod to rotate around the first rotation axis, so as to drive the support plate to move toward the clamping and fixing device.

[0012] Wherein, both the first rotation axis and the second rotation axis extend along the second direction.

[0013] Optionally, the support plate is provided with a sliding groove extending along the first direction, the contour abutment shaft is slidably connected to the sliding groove, the contour abutment shaft is threaded with a nut, and is unlockably locked to the support plate by the nut.

[0014] Optionally, the number of the connecting rods is two, and the two connecting rods are arranged in parallel, with at least one of the connecting rods connected to the elastic element.

[0015] Optionally, the sliding assembly includes a slider and a slide rail, the slide rail being disposed on the device body and extending along a first direction, the slider being slidably connected to the slide rail, and the first end of the connecting rod being rotatably connected to the slider.

[0016] Optionally, the elastic element is a torsion spring, and the two ends of the torsion spring are respectively connected to the first end of the connecting rod and the sliding assembly.

[0017] Optionally, the clamping and fixing device includes a support plate and two clamping members. The support plate is disposed on the device body, and in a first direction, the two clamping members are respectively located on both sides of the support plate.

[0018] Each clamping component includes a push plate, a fixing plate, and a screw. The fixing plate is disposed on the device body. The push plate is parallel to the support plate and is disposed between the fixing plate and the support plate. The fixing plate has a threaded hole that is threaded to engage with the screw. The screw extends along the first direction, and one end of the screw passes through the threaded hole and connects to the push plate.

[0019] Optionally, in the third direction, the sliding component, the pushing component, and the clamping and fixing device are spaced apart. In the second direction, the device body is located below the clamping and fixing device. A recess is formed on the top of the device body. The recess is recessed inward along the second direction. In the second direction, the bottom of the cutter shaft and the contouring abutment shaft extends into the recess, and the recess allows new carbon brushes and old carbon brushes to extend into it.

[0020] In the first direction, the end face of the cutter shaft facing the new carbon brush is flush with the end face of the contouring abutment shaft facing the old carbon brush.

[0021] Wherein, the second direction is a vertical direction, and the first direction and the third direction are horizontal directions and perpendicular to each other.

[0022] Optionally, the device body is configured as a dust collection box, and a chamber is provided inside the device body, with a carbon powder collection port communicating with the chamber in the recess.

[0023] Optionally, an exhaust fan is provided in the chamber, and the inlet of the exhaust fan is connected to the toner collection port.

[0024] The above technical solution arranges the grinding end of the new carbon brush and the shaping end of the old carbon brush side by side in the first direction and fixes them with clamping and fixing devices. The sliding component slides on the device body to drive the pushing component to move in the first direction, thereby driving the cutter shaft and the shaping abutment shaft to move so that the cutter shaft and the shaping abutment shaft abut against the grinding end of the new carbon brush and the shaping end of the old carbon brush, respectively. The drive component then drives the cutter shaft to rotate, and it continues to slide on the device body via the sliding component, thereby driving the push component to move along the first direction. This causes the cutter shaft and the contouring abutment shaft to simultaneously abut against the end of the new carbon brush to be ground and the end of the old carbon brush to be contoured, respectively. In other words, the push component continues to move along the first direction under the drive of the sliding component, and the contouring abutment shaft can move along the arc trajectory of the end of the old carbon brush to be contoured. At the same time, the cutter shaft can follow the arc trajectory of the end to be contoured. Thus, the cutter shaft grinds the end of the new carbon brush to be ground and obtains the same arc shape as the end of the old carbon brush to be contoured. This carbon brush end face grinding device is simple to operate, and the arc surface of the new carbon brush ground has a high degree of fit with the slip ring.

[0025] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 This is a three-dimensional structural schematic diagram of a carbon brush end face grinding device provided in an exemplary embodiment of this disclosure;

[0028] Figure 2 This is a three-dimensional structural schematic diagram of a carbon brush end face grinding apparatus provided in an exemplary embodiment of this disclosure (and...). Figure 1 (Different perspectives);

[0029] Figure 3 yes Figure 2 An enlarged view of part A in the image;

[0030] Figure 4 This is a front view of a carbon brush end face grinding apparatus provided in an exemplary embodiment of this disclosure;

[0031] Figure 5 This is a top view of a carbon brush end face grinding apparatus provided in an exemplary embodiment of this disclosure.

[0032] Explanation of reference numerals in the attached figures

[0033] 1. Device body; 2. Clamping and fixing device; 201. Support plate; 202. Clamping component; 2021. Push plate; 2022. Fixing plate; 2023. Screw; 3. New carbon brush; 4. Old carbon brush; 5. Grinding assembly; 501. Drive component; 502. Tool shaft; 503. Contouring abutment shaft; 6. Pushing assembly; 601. Support plate; 602. Connecting rod; 603. Elastic component; 7. Sliding assembly; 701. Slider; 702. Slide rail; 8. Slide groove; 9. Nut; 10. Recess; 11. Carbon powder collection port. Detailed Implementation

[0034] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0035] In this disclosure, unless otherwise stated, directional terms such as "up," "down," "left," and "right" indicate orientations or positional relationships based on the directions shown in the accompanying drawings. These terms are used solely for ease of description and simplification, and do not imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this disclosure. The terms "inner" and "outer" refer to the inner and outer contours of the corresponding structures. The terms "first," "second," etc., are used to distinguish different components and do not imply sequence or importance. In the accompanying drawings, D1 represents the first direction, D2 the second direction, D3 the third direction, T1 the first axis of rotation, T2 the second axis of rotation, S1 the first predetermined direction, and S2 the second predetermined direction. Furthermore, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements.

[0036] like Figures 1-5 As shown, this disclosure provides a carbon brush end face grinding device, including a device body 1, a clamping and fixing device 2, a grinding assembly 5, a pushing assembly 6, and a sliding assembly 7. The clamping and fixing device 2 is connected to the device body 1 and is used to fix a new carbon brush 3 and an old carbon brush 4 on the device body 1 and arranged side by side in a first direction D1. The grinding assembly 5 includes a driving member 501, a cutting shaft 502, and a contouring abutment shaft 503. Both the cutting shaft 502 and the contouring abutment shaft 503 extend along a second direction D2 and are arranged side by side in the first direction D1. The cutting shaft 502 is used to contact the end of the new carbon brush 3 to be ground, and the contouring abutment shaft 503 is used to contact the end of the old carbon brush 4 to be contoured. The driving member 501 can drive the cutting shaft 502 to grind the new carbon brush 3. Both the cutter shaft 502 and the contouring abutment shaft 503 are connected to the push assembly 6. The push assembly 6 is used to drive the cutter shaft 502 and the contouring abutment shaft 503 to move so that they simultaneously abut against the new carbon brush 3 and the old carbon brush 4, respectively. The sliding assembly 7 is disposed on the device body 1, and the push assembly 6 is connected to the sliding assembly 7. The sliding assembly 7 can drive the push assembly 6 to move along the first direction D1.

[0037] Through the above technical solution, the grinding end of the new carbon brush 3 and the shaping end of the old carbon brush 4 are arranged side by side in the first direction D1 and fixed by the clamping and fixing device 2. The sliding component 7 slides on the device body 1 to drive the pushing component 6 to move along the first direction D1, thereby driving the cutter shaft 502 and the shaping abutment shaft 503 to move, so that the cutter shaft 502 and the shaping abutment shaft 503 abut against the grinding end of the new carbon brush 3 and the shaping end of the old carbon brush 4, respectively. The drive component 501 drives the cutter shaft 502 to rotate, and it continues to slide on the device body 1 via the sliding component 7, thereby driving the push component 6 to move along the first direction D1. This causes the cutter shaft 502 and the contouring abutment shaft 503 to simultaneously abut against the end of the new carbon brush 3 to be ground and the end of the old carbon brush 4 to be contoured, respectively. In other words, as the push component 6 continues to move along the first direction D1 under the drive of the sliding component 7, the contouring abutment shaft 503 can move along the arc trajectory of the end of the old carbon brush 4 to be contoured. At the same time, the cutter shaft 502 can follow the arc trajectory of the end to be contoured. Thus, the cutter shaft 502 grinds the end of the new carbon brush 3 to be ground and obtains the same arc shape as the end of the old carbon brush 4 to be contoured. This carbon brush end face grinding device is simple to operate, and the arc surface of the new carbon brush 3 produced by grinding has a high degree of matching with the slip ring.

[0038] In some embodiments, the drive element 501 may be a motor, and the drive shaft of the motor is coaxially connected to the cutter shaft 502 so that the cutter shaft 502 rotates about its own axis. Here, the cutter shaft 502 may be helical and have thorns and helical grooves distributed on its surface to facilitate the downward grinding of carbon powder without affecting the grinding effect.

[0039] Optionally, the pushing assembly 6 includes a support plate 601, a connecting rod 602, and an elastic element 603. The contour-following abutment shaft 503 and the cutter shaft 502 are both mounted on the support plate 601. The first end of the connecting rod 602 is rotatably connected to the sliding assembly 7 about a first rotation axis T1, and the second end of the connecting rod 602 is rotatably connected to the support plate 601 about a second rotation axis T2. Both ends of the elastic element 603 are connected to the first end of the connecting rod 602 and the sliding assembly 7, respectively. The elastic element 603 can generate a force that drives the first end of the connecting rod 602 to rotate about the first rotation axis T1, thereby moving the support plate 601 toward the clamping and fixing device 2. The first rotation axis T1 and the second rotation axis T2 both extend along a second direction D2. With this configuration, during the contouring process of the end of the new carbon brush 3 to be ground, the pushing component 6 continuously moves along the first direction D1. The force generated by the elastic element 603 can drive the first and second ends of the connecting rod 602 to rotate around the first rotation axis T1 and the second rotation axis T2 respectively, so that the support plate 601 moves toward the clamping and fixing device 2. This allows the force generated by the elastic element 603 to act on the cutter shaft 502 and the contouring abutment shaft 503, so that the cutter shaft 502 and the contouring abutment shaft 503 can simultaneously abut against the end of the new carbon brush 3 to be ground and the end of the old carbon brush 4 to be contoured. Furthermore, the cutter shaft 502 can always abut against the end of the new carbon brush 3 to be ground and the contouring abutment shaft 503 can always abut against the end of the old carbon brush 4 to be contoured. This enables the cutter shaft 502 to grind the same arc shape on the end of the new carbon brush 3 to be ground as the end of the old carbon brush 4 to be contoured, thereby improving the grinding accuracy.

[0040] The number of the aforementioned connecting rods 602 can be one, two, or more, and this disclosure does not limit this. As an exemplary embodiment, the number of connecting rods 602 is two, and the two connecting rods 602 are arranged in parallel, with at least one connecting rod 602 connected to an elastic member 603. The two connecting rods 602 enhance the support for the support plate 601. The two connecting rods 602, the support plate 601, and the sliding assembly 7 together form a parallelogram structure. Under the force generated by the elastic element 603, the two connecting rods 602 rotate together during the grinding process. The support plate 601 and the sliding assembly 7 remain relatively parallel, allowing the support plate 601 to drive the cutter shaft 502 and the contouring abutment shaft 503 to simultaneously abut against the grinding end of the new carbon brush 3 and the contoured end of the old carbon brush 4, respectively. Furthermore, the cutter shaft 502 remains in contact with the grinding end of the new carbon brush 3, and the contouring abutment shaft 503 remains in contact with the contoured end of the old carbon brush 4, improving the stability of the support plate 601 during processing and the machining accuracy of the grinding end of the new carbon brush 3. Here, in this disclosure, elastic elements 603 are connected to both connecting rods 602.

[0041] Since different models of carbon brushes have different sizes, to facilitate the carbon brush end face grinding device to adapt to the contour grinding of carbon brushes of different sizes, optionally, a groove 8 extending along the first direction D1 is provided on the support plate 601. The contouring abutment shaft 503 is slidably connected to the groove 8, and a nut 9 is threaded onto the contouring abutment shaft 503, and is detachably locked onto the support plate 601 by the nut 9. By sliding the contouring abutment shaft 503 along the groove 8 in the first direction D1, the distance between the contouring abutment shaft 503 and the cutter shaft 502 in the first direction D1 can be adjusted according to the size of the new carbon brush 3 and the old carbon brush 4, so as to adapt to the contour grinding of carbon brushes of different sizes. Here, it should be noted that the size of the new carbon brush 3 and the old carbon brush 4 to be contoured are the same model.

[0042] Optionally, the sliding assembly 7 includes a slider 701 and a slide rail 702. The slide rail 702 is disposed on the device body 1 and extends along a first direction D1. The slider 701 is slidably connected to the slide rail 702, and the first end of the connecting rod 602 is rotatably connected to the slider 701. Thus, the slide rail 702 limits the slider 701 in the first direction D1, so that the slider 701 can slide along the slide rail 702 in the first direction D1. In some embodiments, the slide rail 702 may partially pass through the slider 701. This disclosure does not limit the number of slide rails 702. For example, the number of slide rails 702 may be two arranged side by side to improve the stability of the slider 701 sliding.

[0043] To facilitate the movement of slider 701, a pusher may optionally be provided on slider 701.

[0044] Optionally, the elastic element 603 is a torsion spring, with its two ends connected to the first end of the connecting rod 602 and the sliding assembly 7, respectively. The force applied by the torsion spring causes the connecting rod 602 to rotate, and during the grinding process, the cutter shaft 502 can contact the end of the new carbon brush 3 to be ground, while the contouring abutment shaft 503 contacts the end of the old carbon brush 4 to be contoured. It should be noted that the force applied by the torsion spring is large enough to ensure that the cutter shaft 502 remains in contact with the end of the new carbon brush 3 to be ground during the grinding process, and that the contouring abutment shaft 503 remains in contact with the end of the old carbon brush 4 to be contoured.

[0045] Optionally, the clamping and fixing device 2 includes a support plate 201 and two clamping members 202. The support plate 201 is disposed on the device body 1, and the two clamping members 202 are respectively located on both sides of the support plate 201 in the first direction D1. Each clamping member 202 includes a push plate 2021, a fixing plate 2022, and a screw 2023. The fixing plate 2022 is disposed on the device body 1. The push plate 2021 is parallel to the support plate 201 and is disposed between the fixing plate 2022 and the support plate 201. The fixing plate 2022 has a threaded hole that is threaded to engage with the screw 2023. The screw 2023 extends along the first direction D1, and one end of the screw 2023 passes through the threaded hole and connects to the push plate 2021. With this configuration, the two clamping members 202 can be used to abut the new carbon brush 3 and the old carbon brush 4 against the support plate 201, facilitating their fixation. Specifically, the new carbon brush 3 is placed between one push plate 2021 and the support plate 201, and the old carbon brush 4 is placed between another push plate 2021 and the support plate 201. Rotating the corresponding screws 2023 allows the new carbon brush 3 and the old carbon brush 4 to move towards the support plate 201 under the pushing action of the corresponding push plates 2021, and abut against the support plate 201 to complete the fixation. In some embodiments, to facilitate the rotation of the screws 2023, a turntable is connected to the end of each screw 2023 away from the push plate 2021. Additionally, to reduce the squeezing effect of the push plate 2021 on the carbon brushes, a rubber pad is provided on the side of the push plate 2021 away from the screws 2023.

[0046] Optionally, in the third direction D3, the sliding component 7, the pushing component 6, and the clamping and fixing device 2 are spaced apart. In the second direction D2, the device body 1 is located below the clamping and fixing device 2. A recess 10 is formed on the top of the device body 1. The recess 10 is recessed inward along the second direction D2. In the second direction D2, the bottom of the cutter shaft 502 and the contouring abutment shaft 503 extends into the recess 10, and the recess 10 allows the new carbon brush 3 and the old carbon brush 4 to extend into it. In the first direction D1, the end face of the cutter shaft 502 facing the new carbon brush 3 is flush with the end face of the contouring abutment shaft 503 facing the old carbon brush 4. The second direction D2 is a vertical direction, and the first direction D1 and the third direction D3 are horizontal directions and perpendicular to each other. The tool shaft 502 and the contouring abutment shaft 503 can extend into the recess 10 along the second direction D2, and the new carbon brush 3 and the old carbon brush 4 can extend into the recess 10 along the third direction D3. The grinding end of the new carbon brush 3 and the contouring end of the old carbon brush 4 are both extended into the recess 10 as a whole, so that the end face of the tool shaft 502 facing the new carbon brush 3 is flush with the end face of the contouring abutment shaft 503 facing the old carbon brush 4 in the first direction D1. That is to say, during the grinding process, the movement trajectory of the tool shaft 502 and the contouring abutment shaft 503 will not interfere with the device body 1.

[0047] Here, combined Figure 4 and Figure 5 The first direction D1 includes a first preset direction S1 and a second preset direction S2. Based on the illustration, the first preset direction S1 is from left to right, and the second preset direction S2 is from right to left. In this disclosure, if the new carbon brush 3 is located to the left of the old carbon brush 4, the force generated by the torsion spring is set to cause the connecting rod 602 to rotate counterclockwise, and the sliding direction of the slider 701 is set to slide along the first preset direction S1. That is, during the grinding process, when the slider 701 is moved along the first preset direction S1, the force generated by the torsion spring can act on the tool shaft 502 and the contouring abutment shaft 503, so that the tool shaft 502 and the contouring abutment shaft 503 simultaneously abut against the end of the new carbon brush 3 to be ground and the end of the old carbon brush 4 to be contoured, respectively, and the tool shaft 502 can always be in contact with the new carbon brush 3. The grinding end abutment and the contouring abutment shaft 503 can always abut against the contoured end of the old carbon brush 4, so that the cutter shaft 502 can grind the same arc shape as the contoured end of the old carbon brush 4 on the grinding end of the new carbon brush 3; if the new carbon brush 3 is located to the right of the old carbon brush 4, the force generated by the torsion spring is set to make the connecting rod 602 rotate clockwise, and the sliding direction of the slider 701 is set to slide along the second preset direction S2. During the grinding process, the slider 701 is moved along the second preset direction S2, and the force generated by the torsion spring will produce the same effect as above, which will not be described in detail here.

[0048] Optionally, the device body 1 is configured as a dust collection box, with a chamber inside. A toner collection port 11, communicating with the chamber, is provided in the recess 10. This allows toner generated during the grinding process and entering the recess 10 to be collected and recycled within the chamber through the toner collection port 11, reducing the environmental impact of toner diffusion. In some embodiments, an exhaust fan is installed within the chamber, with its inlet connected to the toner collection port 11. The exhaust fan draws grinding dust into the chamber, further reducing toner diffusion. In some embodiments, a filter element may also be installed within the chamber to adsorb toner. The dust collection box may also be equipped with an exhaust vent to maintain air pressure balance.

[0049] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0050] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0051] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A carbon brush end face grinding device, characterized in that, include: device body; A clamping and fixing device is connected to the device body and is used to fix a new carbon brush and an old carbon brush on the device body and arrange them side by side in a first direction. A grinding assembly includes a drive member, a cutter shaft, and a contouring abutment shaft. The cutter shaft and the contouring abutment shaft both extend along a second direction and are arranged side by side in a first direction. The cutter shaft is used to contact the end of the new carbon brush to be ground, and the contouring abutment shaft is used to contact the end of the old carbon brush to be contoured. The drive member can drive the cutter shaft to grind the new carbon brush. The push assembly is connected to both the cutter shaft and the contouring abutment shaft. The push assembly is used to drive the cutter shaft and the contouring abutment shaft to move so as to simultaneously abut against the new carbon brush and the old carbon brush, respectively. A sliding component is disposed on the device body, and the pushing component is connected to the sliding component. The sliding component can drive the pushing component to move along the first direction. The pushing assembly includes a support plate, a connecting rod, and an elastic element. The contouring abutment shaft and the cutter shaft are both disposed on the support plate. The first end of the connecting rod is rotatably connected to the sliding assembly around a first rotation axis, and the second end of the connecting rod is rotatably connected to the support plate around a second rotation axis. The two ends of the elastic element are respectively connected to the first end of the connecting rod and the sliding assembly, and the elastic element can generate a force that drives the first end of the connecting rod to rotate around the first rotation axis, so as to drive the support plate to move toward the clamping and fixing device. Wherein, both the first rotation axis and the second rotation axis extend along the second direction. In the third direction, the sliding component, the pushing component, and the clamping and fixing device are spaced apart. In the second direction, the device body is located below the clamping and fixing device. A recess is formed on the top of the device body. The recess is recessed inward along the second direction. In the second direction, the bottom of the cutter shaft and the contouring abutment shaft extends into the recess, and the recess allows new and old carbon brushes to extend into it. In the first direction, the end face of the cutter shaft facing the new carbon brush is flush with the end face of the contouring abutment shaft facing the old carbon brush. Wherein, the second direction is a vertical direction, and the first direction and the third direction are horizontal directions and perpendicular to each other.

2. The carbon brush end face grinding device according to claim 1, characterized in that, The support plate has a sliding groove extending along the first direction. The contour abutment shaft is slidably connected to the sliding groove. A nut is threaded onto the contour abutment shaft and can be unlocked and locked onto the support plate by means of the nut.

3. The carbon brush end face grinding device according to claim 1, characterized in that, The number of connecting rods is two, and the two connecting rods are arranged in parallel, with at least one of the connecting rods connected to the elastic element.

4. The carbon brush end face grinding device according to claim 1, characterized in that, The sliding assembly includes a slider and a slide rail. The slide rail is disposed on the device body and extends along a first direction. The slider is slidably connected to the slide rail, and the first end of the connecting rod is rotatably connected to the slider.

5. The carbon brush end face grinding device according to claim 1, characterized in that, The elastic element is a torsion spring, and the two ends of the torsion spring are respectively connected to the first end of the connecting rod and the sliding assembly.

6. The carbon brush end face grinding device according to claim 1, characterized in that, The clamping and fixing device includes a support plate and two clamping members. The support plate is disposed on the device body, and in a first direction, the two clamping members are respectively located on both sides of the support plate. Each clamping component includes a push plate, a fixing plate, and a screw. The fixing plate is disposed on the device body. The push plate is parallel to the support plate and is disposed between the fixing plate and the support plate. The fixing plate has a threaded hole that is threaded to engage with the screw. The screw extends along the first direction, and one end of the screw passes through the threaded hole and connects to the push plate.

7. The carbon brush end face grinding device according to claim 1, characterized in that, The device body is configured as a dust collection box, and a chamber is provided inside the device body. The recess is provided with a toner collection port that communicates with the chamber.

8. The carbon brush end face grinding device according to claim 7, characterized in that, An exhaust fan is installed in the chamber, and the inlet of the exhaust fan is connected to the toner collection port.

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