CN216055641U - Automatic grinding machine for carbon brush of vehicle generator - Google Patents

Abstract

The utility model relates to the technical field of carbon brushes of automotive generators and discloses an automatic grinding machine for a carbon brush of an automotive generator, which comprises a box body, wherein the front side wall of the box body is provided with an opening, a U-shaped plate is fixedly connected to the center of the inner wall of the lower side of the box body, a horizontal roller shaft is arranged on the upper side of the inside of the U-shaped plate, a grinding roller is fixedly sleeved in the middle of the shaft wall of the roller shaft, abrasive paper is arranged on the circumferential wall of the grinding roller, the upper end of the grinding roller extends to the outside of the U-shaped plate, the inner walls of the left side and the right side of the U-shaped plate, which are positioned at the center of the grinding roller, are rotatably connected with a horizontal rotating shaft through a first rolling bearing, a speed reducing motor is fixedly arranged at the rotating shaft position of the outer wall of the right side of the U-shaped plate, and the output end of the speed reducing motor penetrates through the outer wall of the right side of the U-shaped plate and is fixedly connected with the corresponding rotating shaft. The carbon brush grinding device is convenient to replace a proper grinding roller according to the required radian, meanwhile, the new abrasive paper is convenient to replace, the carbon brush is convenient to clamp and fix, time and labor are saved, the efficiency is high, and the universality is high.

Description

Automatic grinding machine for carbon brush of vehicle generator

Technical Field

The utility model relates to the technical field of carbon brushes of generators for vehicles, in particular to an automatic grinding machine for carbon brushes of generators for vehicles.

Background

The carbon brush mainly conducts electricity while rubbing metal. The magnetic coupling is used for a slip ring of a generator, exciting current is added to a rotating rotor through a carbon brush to serve as a sliding contact body for leading in and leading out current, and the electric conduction, the heat conduction and the lubrication performance of the magnetic coupling are required to be good; and has certain mechanical strength and the instinct of a directional spark.

The existing automatic grinding machine for the carbon brush of the automobile generator is not only inconvenient to replace a proper grinding roller according to required radian, but also inconvenient to replace new abrasive paper, and is also inconvenient to clamp and fix the carbon brush, time and labor are wasted, the efficiency is low, and the universality is low, so that the automatic grinding machine for the carbon brush of the automobile generator is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that in the prior art, a proper grinding roller is inconvenient to replace according to a required radian, new abrasive paper is inconvenient to replace, a carbon brush is inconvenient to clamp and fix, time and labor are wasted, efficiency is low, and universality is low, and the automatic grinding machine for the carbon brush of the generator for the vehicle is provided.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an automatic grinding machine for a carbon brush of a vehicle generator comprises a box body with an opening on the front side wall, a U-shaped plate is fixedly connected to the center of the inner wall of the lower side of the box body, a horizontal roller shaft is arranged on the upper side of the inside of the U-shaped plate, a grinding roller is fixedly sleeved in the middle of the shaft wall of the roller shaft, abrasive paper is arranged on the circumferential wall of the grinding roller, the upper end of the grinding roller extends to the outside of the U-shaped plate, horizontal rotating shafts are rotatably connected to the inner walls of the left side and the right side of the U-shaped plate at the center of the grinding roller through first rolling bearings, a speed reduction motor is fixedly arranged on the rotating shaft on the outer wall of the right side of the U-shaped plate, the output end of the speed reduction motor penetrates through the outer wall of the right side of the U-shaped plate and is fixedly connected with the corresponding rotating shaft, U-shaped blocks are slidably sleeved at the two ends of the roller shaft, and the middle parts of the outer walls of the two sides, which are opposite to each other, are fixedly connected with the corresponding rotating shafts, two the upside outer wall of U-shaped board all sets up through the upside axial wall fastening of bolt and roller, the left side wall that grinds the roller is located the upper and lower both sides department symmetry of roller and has seted up the rectangular hole, two the inside of rectangular hole is all fixed and is equipped with fixed establishment, the inside of box is located the upside department of grinding the roller and is provided with the rectangle sleeve, the slide opening has been seted up at the telescopic upper end middle part of rectangle, fixed being equipped with between the inside of slide opening and the upside inner wall of box supports tight mechanism, the telescopic inside downside of rectangle passes through fixture fixedly connected with carbon brush.

Preferably, the fixing mechanism comprises two L-shaped clamping plates, two strip-shaped plates, two inclined rods, two limiting shafts, a lead screw and a movable plate, the movable plate is horizontally arranged at the center of the inside of the rectangular hole, a threaded hole is vertically formed in the middle of the upper end of the movable plate, the rod wall of the lead screw is in threaded connection with the hole wall of the threaded hole, the upper end and the lower end of the lead screw extend to the outside of the threaded hole and are rotatably connected with the hole wall of the rectangular hole through a second rolling bearing, rectangular grooves are formed in the left side wall and the right side wall of the movable plate, one ends of the two strip-shaped plates are respectively in sliding connection with the groove walls of the two rectangular grooves, the opposite ends of the two strip-shaped plates extend to the outside of the rectangular hole and are respectively in fixed connection with the vertical side walls of the two L-shaped clamping plates, the horizontal parts of the two L-shaped clamping plates are respectively abutted against abrasive paper, and the front side walls of the two strip-shaped plates are respectively provided with a strip-shaped hole, two spacing axle slides respectively and sets up in the inside one side department that carries on the back from each other of two bar holes, and both ends all with the cell wall fixed connection of rectangular channel around two spacing axles, equal fixed connection has the horizontally fixed plate in the opening of both sides about the rectangular channel, two the outside department symmetry that the upper end of bar shaped plate is located the rectangular channel has seted up the inclined hole, two the down tube slides respectively and sets up in the inside of two inclined holes, two the both ends of down tube respectively with the pore wall and the fixed plate fixed connection of rectangular channel.

Preferably, the abutting mechanism comprises a sliding rod, a spring and a baffle plate, the sliding rod is vertically arranged inside the sliding hole in a sliding mode, the upper end and the lower end of the sliding rod extend to the outside of the sliding hole, the upper end of the sliding rod is fixedly connected with the inner wall of the upper side of the box body, the baffle plate is fixedly connected with the lower end of the sliding rod, and the spring and the rod wall of the sliding rod are movably sleeved between the box body and the upper end of the rectangular sleeve.

Preferably, fixture includes two-way lead screw and two splint, two-way lead screw level sets up in the telescopic downside department of rectangle, both ends all rotate with the telescopic inner tube wall of rectangle through third antifriction bearing about the two-way lead screw is connected, two the vertical screw thread of splint symmetry cup joints on the left and right sides pole wall of two-way lead screw, and the lower extreme of two splint all extends to the telescopic outside of rectangle, both ends all run through the telescopic inner tube wall of rectangle and extend to the telescopic outside of rectangle about the two-way lead screw.

Preferably, both ends of the bidirectional screw rod are fixedly connected with rotating wheels.

Preferably, an anti-skid sleeve is fixedly sleeved on one side, close to the roll shaft, of the rod wall of the screw rod.

Preferably, the front side wall upper end of box is articulated to have the case lid, the front side wall of case lid is provided with the observation window.

Compared with the prior art, the utility model provides an automatic grinder for a carbon brush of a vehicle generator, which has the following beneficial effects:

1. this automobile-used generator carbon brush automatic grinding machine through fixed establishment, U-shaped piece and the pivot that is equipped with, is convenient for change suitable abrasive paper when grinding the roller according to required radian, is convenient for change.

2. This automobile-used generator carbon brush automatic grinding machine is through the fixture that is equipped with, is convenient for carry out the centre gripping fixedly to the carbon brush.

The parts which are not involved in the device are the same as or can be realized by adopting the prior art, the utility model is convenient for replacing the abrasive paper while replacing the proper grinding roller according to the required radian, and is also convenient for clamping and fixing the carbon brush, thereby saving time and labor, having high efficiency and strong universality.

Drawings

Fig. 1 is a schematic structural diagram of an automatic grinder for carbon brushes of a vehicle generator according to the present invention;

FIG. 2 is a schematic side view of the grinding roll of FIG. 1;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

fig. 4 is an enlarged view of a portion B of fig. 1.

In the figure: the device comprises a 1U-shaped plate, a 2 box body, a 3 speed reducing motor, a 4 box cover, a 5 observation window, a 6 roller shaft, a 7U-shaped block, an 8 rotating shaft, a 9 grinding roller, 10 abrasive paper, a 11L-shaped clamping plate, a 12 movable plate, a 13 fixed plate, a 14 strip-shaped plate, a 15 inclined rod, a 16 limiting shaft, a 17 screw rod, an 18 carbon brush, a 19 bidirectional screw rod, a 20 clamping plate, a 21 rectangular sleeve, a 22 spring, a 23 sliding rod and a 24 baffle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1

Referring to fig. 1-4, an automatic grinding machine for a carbon brush of a vehicle generator comprises a box body 2 with an opening on the front side wall, a U-shaped plate 1 is fixedly connected to the center of the inner wall of the lower side of the box body 2, a horizontal roller shaft 6 is arranged on the upper side inside the U-shaped plate 1, a grinding roller 9 is fixedly sleeved in the middle of the shaft wall of the roller shaft 6, abrasive paper 10 is arranged on the circumferential wall of the grinding roller 9, the upper end of the grinding roller 9 extends to the outside of the U-shaped plate 1, the inner walls of the left and right sides of the U-shaped plate 1 are positioned at the center of the grinding roller 9 and are rotatably connected with a horizontal rotating shaft 8 through a first rolling bearing, a speed reduction motor 3 is fixedly arranged at the position of the rotating shaft 8 on the outer wall of the right side of the U-shaped plate 1, the output end of the speed reduction motor 3 penetrates through the outer wall of the right side of the U-shaped plate 1 and is fixedly connected with the corresponding rotating shaft 8, U-shaped blocks 7 are slidably sleeved at the two ends of the roller shaft 6, the middle of the outer wall of one side opposite to the two U-shaped blocks 7 is fixedly connected with the corresponding rotating shaft 8, the upside outer wall of two U-shaped boards 1 all sets up through the upside axial wall fastening of bolt and roller 6, the left side wall that grinds roller 9 is located the upper and lower both sides department symmetry of roller 6 and has seted up the rectangular hole, the inside of two rectangular holes is all fixed and is equipped with fixed establishment, the inside upside department that is located grinding roller 9 of box 2 is provided with rectangular sleeve 21, the slide opening has been seted up at rectangular sleeve 21's upper end middle part, the fixed tight mechanism that supports that is equipped with between the inside of slide opening and box 2's the upside inner wall, rectangular sleeve 21's inside downside passes through fixture fixedly connected with carbon brush 18.

The fixing mechanism comprises two L-shaped clamp plates 11, two strip-shaped plates 14, two inclined rods 15, two limiting shafts 16, a screw rod 17 and a movable plate 12, the movable plate 12 is horizontally arranged at the center of the inside of a rectangular hole, a threaded hole is vertically formed in the middle of the upper end of the movable plate 12, the rod wall of the screw rod 17 is in threaded connection with the hole wall of the threaded hole, the upper end and the lower end of the screw rod 17 extend to the outside of the threaded hole and are in rotating connection with the hole wall of the rectangular hole through a second rolling bearing, rectangular grooves are formed in the left side wall and the right side wall of the movable plate 12, one ends of the two strip-shaped plates 14 are respectively in sliding connection with the groove walls of the two rectangular grooves, the deviated ends of the two strip-shaped plates 14 extend to the outside of the rectangular hole and are respectively in fixed connection with the vertical part side walls of the two L-shaped clamp plates 11, the horizontal parts of the two L-shaped clamp plates 11 are respectively abutted against the abrasive paper 10, the front side walls of the two strip-shaped plates 14 are respectively provided with a strip-shaped hole, two spacing axles 16 slide respectively and set up in the inside one side department that carries on the back in two bar holes, and both ends all with the cell wall fixed connection of rectangular channel around two spacing axles 16, equal fixedly connected with horizontally fixed plate 13 in the opening is opened to both sides about the rectangular channel, the outside department symmetry that the upper end of two bar boards 14 is located the rectangular channel has seted up the inclined hole, two down tubes 15 slide respectively and set up the inside at two inclined holes, two 15 both ends of down tubes respectively with the pore wall and the fixed plate 13 fixed connection of rectangular channel.

The abutting mechanism comprises a sliding rod 23, a spring 22 and a baffle 24, the sliding rod 23 is vertically arranged inside the sliding hole in a sliding mode, the upper end and the lower end of the sliding rod 23 extend to the outside of the sliding hole, the upper end of the sliding rod 23 is fixedly connected with the inner wall of the upper side of the box body, the baffle 24 is fixedly connected with the lower end of the sliding rod 23, and the spring 22 and the rod wall of the sliding rod 23 are located between the box body 2 and the upper end of the rectangular sleeve 21 in a movable sleeved mode.

Fixture includes two-way lead screw 19 and two splint 20, two-way lead screw 19 level sets up in the downside department of rectangle sleeve 21, both ends all rotate with the inner tube wall of rectangle sleeve 21 through third antifriction bearing about two-way lead screw 19 and are connected, two splint 20 symmetry vertical screw cup joints on the left and right sides pole wall of two-way lead screw 19, and the lower extreme of two splint 20 all extends to the outside of rectangle sleeve 21, both ends all run through the inner tube wall of rectangle sleeve 21 and extend to the outside of rectangle sleeve 21 about two-way lead screw 19.

The two ends of the bidirectional screw rod 19 are fixedly connected with rotating wheels, and the rotating wheels are convenient for rotating the bidirectional screw rod 19.

The anti-skid sleeve is fixedly sleeved on one side, close to the roll shaft 6, of the rod wall of the screw rod 17, and the screw rod 17 can be conveniently rotated by the anti-skid sleeve.

The front side wall upper end of box 2 articulates there is case lid 4, and the front side wall of case lid 4 is provided with observation window 5, and the reducible carbon dust of case lid 4 pollutes, and observation window 5 can be convenient for observe inside the box 2.

Example 2

An automatic grinding machine for a carbon brush of a vehicle generator comprises a box body 2 with an opening on the front side wall, a U-shaped plate 1 is fixedly connected at the center of the lower side inner wall of the box body 2, a horizontal roller shaft 6 is arranged at the inner upper side of the U-shaped plate 1, a grinding roller 9 is fixedly sleeved at the middle part of the shaft wall of the roller shaft 6, abrasive paper 10 is arranged on the circumferential wall of the grinding roller 9, the upper end of the grinding roller 9 extends to the outside of the U-shaped plate 1, horizontal rotating shafts 8 are rotatably connected at the centers of the inner walls at the left side and the right side of the U-shaped plate 1 through first rolling bearings, a speed reducing motor 3 is fixedly arranged at the position of the rotating shaft 8 at the right side outer wall of the U-shaped plate 1, the output end of the speed reducing motor 3 penetrates through the right side outer wall of the U-shaped plate 1 and is fixedly connected with the corresponding rotating shaft 8, U-shaped blocks 7 are slidably sleeved at the two ends of the roller shaft 6, the middle parts of the outer walls at the two sides, which are deviated from each other U-shaped blocks 7, are fixedly connected with the corresponding rotating shafts 8, the upside outer wall of two U-shaped boards 1 all sets up through the upside axial wall fastening of bolt and roller 6, the left side wall that grinds roller 9 is located the upper and lower both sides department symmetry of roller 6 and has seted up the rectangular hole, the inside of two rectangular holes is all fixed and is equipped with fixed establishment, the inside upside department that is located grinding roller 9 of box 2 is provided with rectangular sleeve 21, the slide opening has been seted up at rectangular sleeve 21's upper end middle part, the fixed tight mechanism that supports that is equipped with between the inside of slide opening and box 2's the upside inner wall, rectangular sleeve 21's inside downside passes through fixture fixedly connected with carbon brush 18.

The fixing mechanism comprises two L-shaped clamp plates 11, two strip-shaped plates 14, two inclined rods 15, two limiting shafts 16, a screw rod 17 and a movable plate 12, the movable plate 12 is horizontally arranged at the center of the inside of a rectangular hole, a threaded hole is vertically formed in the middle of the upper end of the movable plate 12, the rod wall of the screw rod 17 is in threaded connection with the hole wall of the threaded hole, the upper end and the lower end of the screw rod 17 extend to the outside of the threaded hole and are in rotating connection with the hole wall of the rectangular hole through a second rolling bearing, rectangular grooves are formed in the left side wall and the right side wall of the movable plate 12, one ends of the two strip-shaped plates 14 are respectively in sliding connection with the groove walls of the two rectangular grooves, the deviated ends of the two strip-shaped plates 14 extend to the outside of the rectangular hole and are respectively in fixed connection with the vertical part side walls of the two L-shaped clamp plates 11, the horizontal parts of the two L-shaped clamp plates 11 are respectively abutted against the abrasive paper 10, the front side walls of the two strip-shaped plates 14 are respectively provided with a strip-shaped hole, two spacing axles 16 slide respectively and set up in the inside one side department that carries on the back in two bar holes, and both ends all with the cell wall fixed connection of rectangular channel around two spacing axles 16, equal fixedly connected with horizontally fixed plate 13 in the opening is opened to both sides about the rectangular channel, the outside department symmetry that the upper end of two bar boards 14 is located the rectangular channel has seted up the inclined hole, two down tubes 15 slide respectively and set up the inside at two inclined holes, two 15 both ends of down tubes respectively with the pore wall and the fixed plate 13 fixed connection of rectangular channel.

The abutting mechanism comprises a sliding rod 23, a spring 22 and a baffle 24, the sliding rod 23 is vertically arranged inside the sliding hole in a sliding mode, the upper end and the lower end of the sliding rod 23 extend to the outside of the sliding hole, the upper end of the sliding rod 23 is fixedly connected with the inner wall of the upper side of the box body, the baffle 24 is fixedly connected with the lower end of the sliding rod 23, and the spring 22 and the rod wall of the sliding rod 23 are located between the box body 2 and the upper end of the rectangular sleeve 21 in a movable sleeved mode.

Fixture includes two-way lead screw 19 and two splint 20, two-way lead screw 19 level sets up in the downside department of rectangle sleeve 21, both ends all rotate with the inner tube wall of rectangle sleeve 21 through third antifriction bearing about two-way lead screw 19 and are connected, two splint 20 symmetry vertical screw cup joints on the left and right sides pole wall of two-way lead screw 19, and the lower extreme of two splint 20 all extends to the outside of rectangle sleeve 21, both ends all run through the inner tube wall of rectangle sleeve 21 and extend to the outside of rectangle sleeve 21 about two-way lead screw 19.

When the carbon brush grinding device is used, the carbon brush 18 is placed between the two clamping plates 20, the rotating wheel is rotated, the rotating wheel drives the two-way screw rod 19 to rotate, the two-way screw rod 19 drives the two clamping plates 20 to fixedly clamp the carbon brush 18, the spring 22 pushes the rectangular sleeve 21 and drives the lower end of the carbon brush 18 to abut against the abrasive paper 10, the speed reduction motor 3 is started, the speed reduction motor 3 drives the rotating shaft 8 to rotate, the rotating shaft 8 drives the grinding roller 9 to rotate, the grinding roller 9 drives the abrasive paper 10 to grind arc on the lower end of the carbon brush 18, when new abrasive paper 10 needs to be replaced, the two anti-slip sleeves are rotated, the anti-slip sleeve drives the screw rod 1 to rotate, the screw rod 17 drives the two movable plates 12 to move in opposite directions, the two movable plates 12 drive the two strip-shaped plates 14 to obliquely move through the oblique rods 15 and the oblique holes, at the moment, the L-shaped abrasive paper clamping plate 11 does not clamp the carbon brush 10, after the new abrasive paper 10 is wound on the grinding roller 9, the anti-slip sleeve is reversely rotated, so that the two L-shaped clamping plates 11 clamp plates 10 clamp the abrasive paper 10.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims (7)

1. The utility model provides an automobile-used generator carbon brush automatic grinding machine, includes that the preceding lateral wall sets up open-ended box (2), its characterized in that, the downside inner wall center fixedly connected with U-shaped plate (1) of box (2), the inside upside of U-shaped plate (1) is provided with horizontally roller (6), the fixed grinding roller (9) that has cup jointed in the axial wall middle part of roller (6), the circumference wall of grinding roller (9) is provided with abrasive paper (10), the upper end of grinding roller (9) extends to the outside of U-shaped plate (1), the center department that the left and right sides inner wall of U-shaped plate (1) is located grinding roller (9) all rotates through first antifriction bearing and is connected with horizontally pivot (8), the right side outer wall of U-shaped plate (1) is located fixed gear motor (3) of being equipped with pivot (8), the output of gear motor (3) run through the right side outer wall of U-shaped plate (1) and with corresponding pivot (8) fixed connection, the two ends of the roll shaft (6) are respectively sleeved with a U-shaped block (7) in a sliding manner, the middle parts of the outer walls of one sides of the two U-shaped blocks (7) which are deviated from each other are respectively fixedly connected with a corresponding rotating shaft (8), the outer walls of the upper sides of the two U-shaped blocks (1) are respectively fastened with the shaft wall of the upper side of the roll shaft (6) through bolts, rectangular holes are symmetrically formed in the left side wall of the grinding roller (9) at the upper side and the lower side of the roller shaft (6), fixing mechanisms are fixedly arranged in the two rectangular holes, a rectangular sleeve (21) is arranged at the upper side of the grinding roller (9) in the box body (2), a sliding hole is arranged in the middle of the upper end of the rectangular sleeve (21), a propping mechanism is fixedly arranged between the inside of the sliding hole and the inner wall of the upper side of the box body (2), the lower side of the interior of the rectangular sleeve (21) is fixedly connected with a carbon brush (18) through a clamping mechanism.

2. The automatic carbon brush grinding machine for the vehicle generator as claimed in claim 1, wherein the fixing mechanism comprises two L-shaped clamping plates (11), two strip-shaped plates (14), two diagonal rods (15), two limiting shafts (16), a screw rod (17) and a movable plate (12), the movable plate (12) is horizontally arranged at the inner center of the rectangular hole, a threaded hole is vertically formed in the middle of the upper end of the movable plate (12), the rod wall of the screw rod (17) is in threaded connection with the hole wall of the threaded hole, the upper end and the lower end of the screw rod (17) both extend to the outside of the threaded hole and are rotatably connected with the hole wall of the rectangular hole through a second rolling bearing, rectangular grooves are formed in the left side wall and the right side wall of the movable plate (12), one ends of the two strip-shaped plates (14) are respectively in sliding connection with the groove walls of the two rectangular grooves, and the end of the two strip-shaped plates (14) which deviates from each other extends to the outside of the rectangular hole and is respectively connected with the vertical clamping plates (11) of the two L-shaped plates Straight portion lateral wall fixed connection, two the horizontal part of L shape splint (11) all offsets with abrasive paper (10) and sets up, two the bar hole has all been seted up to the preceding lateral wall of bar board (14), two one side department that spacing axle (16) slided respectively and set up in the inside back of the body in two bar holes, and both ends all with the cell wall fixed connection of rectangular channel around two spacing axles (16), equal fixed connection has horizontally fixed plate (13), two in the opening is opened to both sides about the rectangular channel the outside department symmetry that is located the rectangular channel in the upper end of bar board (14) has seted up the inclined hole, two the down tube (15) slide respectively and set up in the inside of two inclined holes, two the both ends of down tube (15) respectively with the pore wall and the fixed plate (13) fixed connection of rectangular channel.

3. The automatic grinder for carbon brushes of a vehicle generator according to claim 1, wherein the abutting mechanism comprises a sliding rod (23), a spring (22) and a baffle (24), the sliding rod (23) is vertically and slidably arranged inside the sliding hole, the upper end and the lower end of the sliding rod (23) both extend to the outside of the sliding hole, the upper end of the sliding rod (23) is fixedly connected with the inner wall of the upper side of the box body (), the baffle (24) is fixedly connected with the lower end of the sliding rod (23), and the rod walls of the spring (22) and the sliding rod (23) are movably sleeved between the upper ends of the box body (2) and the rectangular sleeve (21).

4. The automatic carbon brush grinding machine for the vehicle generator as claimed in claim 1, wherein the clamping mechanism comprises a bidirectional screw rod (19) and two clamping plates (20), the bidirectional screw rod (19) is horizontally arranged at the lower side of the rectangular sleeve (21), the left end and the right end of the bidirectional screw rod (19) are rotatably connected with the inner cylinder wall of the rectangular sleeve (21) through a third rolling bearing, the two clamping plates (20) are symmetrically and vertically screwed on the left rod wall and the right rod wall of the bidirectional screw rod (19), the lower ends of the two clamping plates (20) extend to the outside of the rectangular sleeve (21), and the left end and the right end of the bidirectional screw rod (19) penetrate through the inner cylinder wall of the rectangular sleeve (21) and extend to the outside of the rectangular sleeve (21).

5. The automatic grinder for carbon brushes of a vehicle generator according to claim 4, wherein rotating wheels are fixedly connected to both ends of the bidirectional screw rod (19).

6. The automatic carbon brush grinding machine for the generator of the vehicle as claimed in claim 2, wherein an anti-slip sleeve is fixedly sleeved on one side of the rod wall of the screw rod (17) close to the roller shaft (6).

7. The automatic grinder for the carbon brush of the generator of the vehicle as claimed in claim 1, wherein a box cover (4) is hinged to the upper end of the front side wall of the box body (2), and the front side wall of the box cover (4) is provided with an observation window (5).

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