CN116160346B

CN116160346B - Grinding polisher

Info

Publication number: CN116160346B
Application number: CN202211557087.3A
Authority: CN
Inventors: 王贞丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-09-08
Anticipated expiration: 2042-12-06
Also published as: CN116160346A

Abstract

The invention relates to the technical field of polishing machines, in particular to a grinding and polishing machine, which changes the traditional mode of manually replacing a polishing disc by a worker through arranging a machine body, a disc replacing wheel, a handle bar, a transmission rod, a polishing disc, a supporting roller, a servo motor, a speed regulating button and a transmission mechanism, and enables the polishing disc to uniformly press and polish the surface of the bent pipe even when the bent pipe is polished by a transmission unit, thereby improving the polishing efficiency and effect of the pipe, achieving the aim of saving resources by regulating the rotating speed of the servo motor when the servo motor is in standby, and ensuring the production safety of the worker through a pedal mode.

Description

Grinding polisher

Technical Field

The invention relates to the technical field of polishing machines, in particular to a grinding polishing machine.

Background

The grinding and polishing machine is a mechanical device for mechanical grinding, polishing and waxing, also called a grinder, is a type of angle grinder, and is a device for removing paint surface pollution, oxide layers and shallow marks by rotating a sponge or wool polishing disc on the grinding and polishing machine at a high speed and rubbing the surface to be polished under the combined action of the polishing disc and polishing agent.

However, when the polishing disc on the polishing disc can not polish the pipe in a rotating manner due to the slight bending and other problems of part of the pipe, the friction surface of the polishing disc can not be perfectly attached to the surface of the pipe with bending, and the polishing disc can not polish the pipe uniformly and has pits and other problems.

Disclosure of Invention

Aiming at the problems, the invention provides the following technical scheme: the utility model provides a sand polishing machine, includes the organism, the outer wall rotation of organism is connected with trades the dish wheel, the outer wall rotation of trading the dish wheel is connected with the barre, trade the dish wheel run through the outer wall of organism and extend to the inside of organism, just trade the dish wheel extend into the inside one end uniform sliding connection of organism has the transfer line, just the outer wall of transfer line all is provided with the polishing dish, the inner wall symmetry rotation of organism is connected with the backing roll, the outer wall fixedly connected with servo motor of organism, the bottom outer wall of organism is provided with speed adjusting button, just speed adjusting button with servo motor carries out electric connection, the outer wall of organism is provided with drive mechanism, drive mechanism is used for driving the transfer line and rotates and adjust its height.

Preferably, the transmission mechanism comprises an air pump, the air pump is fixedly connected to the outer wall of the machine body, the outer wall of the machine body is provided with a machine groove, the outer wall of the machine body is fixedly connected with a piston cylinder, one end of the piston cylinder is fixedly connected with a fixing ring, the outer wall of the piston cylinder is provided with a pressure release valve, the inner part of the piston cylinder is communicated with the air outlet of the air pump through a hose, the inner wall of the fixing ring is rotationally connected with a first pipe, the outer wall of the first pipe is rotationally connected with a main shaft of the servo motor through a belt, the first pipe penetrates through the machine groove to the inner part of the machine body, the inner wall of the first pipe is slidably connected with a second pipe, and the transmission rod can be inserted into the second pipe.

Preferably, the inner wall of organism has seted up the spring groove, the inner wall fixedly connected with first spring in spring groove, the other end fixedly connected with guide pillar of first spring, just the outer wall of guide pillar with the inner wall sliding connection in spring groove, just the feedback groove has evenly been seted up to the outer wall of trading the dish wheel, just the position in feedback groove with the position of transfer line is relative setting, just the guide pillar is kept away from the one end of first spring is hemispherical design.

Preferably, the inner walls of the feedback grooves are fixedly connected with rubber pads.

Preferably, the inner wall fixedly connected with disc of second pipe, the one end fixedly connected with second spring of disc, the inner wall fixedly connected with ring of first pipe, the other end of second spring with the outer wall fixedly connected with of ring, just the one end rotation that the second pipe kept away from first pipe is connected with rotary joint, just rotary joint with the gas outlet of air pump passes through the hose intercommunication.

Preferably, the drive rod is far away from the even board groove of having seted up of one end of trading the dish wheel, the inner wall sealing sliding connection of board groove has the cardboard, just the both ends of cardboard are the arc design, the draw-in groove has evenly been seted up to the inner circle wall of second pipe.

Preferably, the outer wall of the piston cylinder is fixedly connected with an air outlet pipe, one end of the air outlet pipe is communicated with the pressure release valve, and the other end of the air outlet pipe penetrates through the machine body to the inside of the machine body and is obliquely opposite to the polishing disc.

Preferably, one end of the transmission rod, which is far away from the disc changing wheel, is arc-shaped.

The invention has the technical effects and advantages that:

1. according to the invention, the machine body, the disc changing wheel, the handle bar, the transmission rod, the polishing disc, the supporting roll, the servo motor, the speed regulating button and the transmission mechanism are arranged, so that the traditional mode that a worker manually changes the polishing disc is changed, the polishing disc can uniformly press and polish the surface of the bent pipe through the transmission unit even when polishing and polishing the bent pipe, the polishing efficiency and the polishing effect of the pipe are improved, the aim of saving resources is achieved by regulating the rotating speed of the servo motor in standby, the rotating speed of the servo motor is improved through a pedal mode, and the production safety of the worker is ensured.

2. The invention fixes the transmission rod and the second pipe by arranging the plate groove, the clamping plate and the clamping groove, thereby preventing slipping, but when the transmission rod leaves the inside of the second pipe, the inner wall of the clamping groove pushes the arc-shaped wall of the clamping plate, thereby leading the clamping plate to return to the inside of the plate groove, and leading the transmission rod to be capable of being matched with the second pipe

The fixing rods are separated.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an internal construction view of the body of the present invention;

FIG. 4 is a partial enlarged view at B in FIG. 3;

FIG. 5 is a partial enlarged view at C in FIG. 3;

fig. 6 is an internal structural view of the first tube in the present invention.

In the figure: 1. a body; 2. disc changing wheel; 3. a handle bar; 4. a transmission rod; 5. polishing disk; 6. a support roller; 7. a servo motor; 8. a speed regulating button; 9. an air pump; 10. a machine groove; 11. a piston cylinder; 12. a fixing ring; 13. a pressure release valve; 14. a first tube; 15. a second tube; 16. a spring groove; 17. a first spring; 18. a guide post; 19. a feedback slot; 20. a rubber pad; 21. a disc; 22. a second spring; 23. a circular ring; 24. a rotary joint; 25. a plate groove; 26. a clamping plate; 27. a clamping groove; 28. and an air outlet pipe.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, in the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

As shown in fig. 1 to 6; the utility model provides a sanding polisher, includes organism 1, the outer wall rotation of organism 1 is connected with the change dish wheel 2, the outer wall rotation of change dish wheel 2 is connected with barre 3, change dish wheel 2 runs through the outer wall of organism 1 and extends to the inside of organism 1, just change dish wheel 2 extends into the inside one end of organism 1 evenly sliding connection has transfer line 4, just the outer wall of transfer line 4 all is provided with polishing dish 5, the inner wall symmetry rotation of organism 1 is connected with backing roll 6, the outer wall fixedly connected with servo motor 7 of organism 1, the bottom outer wall of organism 1 is provided with speed button 8, just speed button 8 with servo motor 7 carries out electric connection, the outer wall of organism 1 is provided with drive mechanism, drive mechanism is used for driving transfer line 4 and rotates and adjust its height;

the transmission mechanism comprises an air pump 9, the air pump 9 is fixedly connected to the outer wall of the machine body 1, a machine groove 10 is formed in the outer wall of the machine body 1, a piston cylinder 11 is fixedly connected to the outer wall of the machine body 1, a fixed ring 12 is fixedly connected to one end of the piston cylinder 11, a pressure release valve 13 is arranged on the outer wall of the piston cylinder 11, the interior of the piston cylinder 11 is communicated with an air outlet of the air pump 9 through a hose, a first pipe 14 is rotationally connected to the inner wall of the fixed ring 12, the outer wall of the first pipe 14 is rotationally connected with a main shaft of the servo motor 7 through a belt, the first pipe 14 penetrates through the machine groove 10 to the interior of the machine body 1, a second pipe 15 is slidingly connected to the inner wall of the first pipe 14, and the transmission rod 4 can be inserted into the interior of the second pipe 15;

when the polishing machine is used, because different polishing discs 5 are needed for polishing a pipe, when the polishing discs 5 need to be replaced, a worker can rotate the disc replacement wheel 2 by rotating the handle rod 3, the disc replacement wheel 2 is connected with the transmission rod 4 in a sliding manner, and the transmission rod 4 is sleeved with the different polishing discs 5, so that the replacement of the polishing discs 5 is simple and convenient, a single polishing disc 5 is not needed to be removed manually, a new polishing disc 5 is arranged, the polishing time is saved, the polishing cost is reduced, when the worker rotates the proper polishing disc 5 to the lower side, because the second tube 15 is connected with the inner wall of the first tube 14 in a sliding manner, the worker can pull the second tube 15 to slide on the inner wall of the first tube 14, the transmission rod 4 is inserted into the second tube 15, the inner wall of the second tube 15 and the outer wall of the transmission rod 4 are fixed through mutual friction force, at this time, the worker starts the servo motor 7 to rotate, the servo motor 7 rotates to drive the first tube 14 to rotate on the inner wall of the fixed ring 12 through the belt, the first tube 14 rotates to drive the second tube 15 to rotate, the second tube 15 rotates to drive the transmission rod 4 to rotate through friction, the transmission rod 4 rotates to drive the polishing disc 5 to rotate, the worker places the tube to be polished on the supporting roll 6, the polishing disc 5 polishes the tube, when the polishing disc 5 needs to be replaced, the worker stops rotating the servo motor 7, slides and pulls the second tube 15 back into the first tube 14, the second tube 15 is not contacted with the transmission rod 4 any more, the worker can rotate the disc changing wheel 2 through the rod 3 to change a new polishing disc 5, then the new polishing disc 5 rotates to the lower side, the second pipe 15 is pulled again, the transmission rod 4 is inserted into the second pipe 15, and the polishing disk 5 is replaced rapidly in the polishing process in a reciprocating manner;

because the transmission rod 4 is slidably connected with the disc changing wheel 2, and the transmission rod 4 is inserted into the second tube 15, when the second tube 15 moves up and down, the transmission rod 4 can be driven to slide up and down on the surface of the disc changing wheel 2, so when polishing a tube with bending, a worker starts the air pump 9 to operate, the air pump 9 continuously exhausts from the air outlet, because the air outlet of the air pump 9 is communicated with the interior of the piston cylinder 11 through a hose, the air exhausted by the air pump 9 enters the interior of the piston cylinder 11, the outer wall of the piston cylinder 11 is provided with the pressure relief valve 13, when the air in the piston cylinder 11 reaches a certain amount, the pressure relief valve 13 is always opened, so that the air in the piston cylinder 11 can be exhausted from the interior of the piston cylinder 11, so that the pressure in the piston cylinder 11 is kept constant, when the piston cylinder 11 is pushed, the air in the piston cylinder 11 is discharged through the relief valve 13, so that the piston cylinder 11 is shortened, the benefit is that when the piston cylinder 11 is pushed and shortened, the pressure in the piston cylinder 11 is not changed because the relief valve 13 keeps the air pressure in the piston cylinder 11, the force used for pushing and shortening the piston cylinder 11 is not changed, one end of the piston cylinder 11 is fixedly connected with the fixed ring 12, so that when the polishing disc 5 is pushed by the outer wall of the bent pipe material and moves upwards with the transmission rod 4, the transmission rod 4 pushes and moves upwards through the first pipe 14 and the second pipe 15, the fixed ring 12 moves upwards to push and push the piston cylinder 11 to be shortened, but because the force is mutual, the fixed ring 12 applies downward force to the fixed ring 12 when pushing and shortening the piston cylinder 11, but as mentioned above, the internal pressure is not changed, so that the force of the piston cylinder 11 pushing the fixed ring 12 is not changed, the fixed ring 12 presses the transmission rod 4 downwards through the second pipe 15 and the first pipe 14, the transmission rod 4 drives the polishing disc 5 downwards, and when the polishing disc 5 is pushed by the outer wall of the bent pipe to move upwards, the polishing disc 5 is always attached to the bent surface of the pipe under the action force of the piston cylinder 11, and even if the bent pipe is polished, the polishing disc 5 can uniformly press and polish the surface of the bent pipe;

the bottom of organism 1 is provided with speed governing button 8, and when waiting for the time, the staff does not step on speed governing button 8 to make servo motor 7 rotate at a slow speed, so as to reduce the energy consumption, when polishing the tubular product, the staff can step on speed governing button 8, makes servo motor 7 high-speed rotation drive polishing dish 5 high-speed rotation polish the tubular product.

As shown in fig. 4 and 5; the inner wall of the machine body 1 is provided with a spring groove 16, the inner wall of the spring groove 16 is fixedly connected with a first spring 17, the other end of the first spring 17 is fixedly connected with a guide pillar 18, the outer wall of the guide pillar 18 is in sliding connection with the inner wall of the spring groove 16, the outer wall of the disc changing wheel 2 is uniformly provided with a feedback groove 19, the position of the feedback groove 19 is opposite to the position of the transmission rod 4, and one end of the guide pillar 18, which is far away from the first spring 17, is of a hemispherical design;

rubber pads 20 are fixedly connected to the inner walls of the feedback grooves 19;

during the use, in order to make the staff drive through rotating the barre 3 and change the disc wheel 2 when rotating, can clearly feel the angle that changes disc wheel 2 rotated, make transfer line 4 can be accurate with the alignment of second pipe 15, so all evenly offer feedback groove 19 with transfer line 4 relative position department on changing disc wheel 2, and first spring 17 groove 16 has been offered to the inner wall at organism 1, first spring 17 in first spring 17 groove 16 promotes guide pillar 18 and change disc wheel 2's outer wall laminating through self elasticity, when feedback groove 19 rotates along with changing disc wheel 2 and reaches guide pillar 18 position, guide pillar 18 can be under the elasticity of first spring 17, in the twinkling of an eye, thereby take place vibrations and produce sound, with this will change disc wheel 2 rotation angle feedback staff, and because the one end of guide pillar 18 is the design of hemisphere, this makes it can not be in the back to change disc wheel 2's rotation in feedback groove 19, because change disc wheel 2 when rotating, the inner wall extrusion profile 18 can push away from the guide pillar 19 and the inner wall of guide pillar 19, thereby can not impact the guide pillar 19 in order to prevent that the inner wall that the feedback groove 18 from rotating the ball from the impact on the inner wall of guide pillar wheel 18, can not leading to the guide pillar 19 to the inside the ball-shaped groove 20, so that the impact on the inner wall of the feedback groove 18 can be made in order to change the guide pillar wheel 2, and the inner wall of the guide pillar 19 is rotated, so that the impact the feedback groove 20 can be made in order to change the inner wall of the feedback groove 20.

As shown in fig. 6; the inner wall of the second pipe 15 is fixedly connected with a disc 21, one end of the disc 21 is fixedly connected with a second spring 22, the inner wall of the first pipe 14 is fixedly connected with a circular ring 23, the other end of the second spring 22 is fixedly connected with the outer wall of the circular ring 23, one end of the second pipe 15, which is far away from the first pipe 14, is rotatably connected with a rotary joint 24, and the rotary joint 24 is communicated with the air outlet of the air pump 9 through a hose;

during the use, the disc 21 of inner wall fixed connection of second pipe 15 and the ring 23 of first pipe 14 inner wall fixed connection are pulled each other through second spring 22, thereby make second pipe 15 slide to the inside of first pipe 14 under the pulling force of second spring 22, thereby make the distance between transfer line 4 and the second pipe 15 increase, make transfer line 4 unable to insert in the second pipe 15, make disc change wheel 2 can rotate, because the gas outlet of air pump 9 communicates with rotary joint 24 through the hose, and rotary joint 24 communicates with the inside of first pipe 14, this just makes the gas that air pump 9 discharged can get into in the first pipe 14, with the continuous increase of gas, the gas in the first pipe 14 can push the second pipe 15 to the outside slip of first pipe 14, thereby make transfer line 4 insert in the second pipe 15, thereby make the staff when changing polishing disc 5, do not need manual pulling second pipe 15 slide in the inside of first pipe 14, only need to start to close air pump 9, can as long as need to start to close air pump 9, this, the gas pump 9 exhaust gas can get into the first pipe 14, with the inside of the polishing disc can be changed conveniently when the machine body 1 need to be changed when the polishing disc is changed, the improvement in order to make the work personnel need to reach the convenient and more convenient when the polishing disc change 1 when the machine body is convenient to be used to change.

As shown in fig. 5; a plate groove 25 is uniformly formed in one end, far away from the disc changing wheel 2, of the transmission rod 4, a clamping plate 26 is connected to the inner wall of the plate groove 25 in a sealing sliding manner, two ends of the clamping plate 26 are arc-shaped, and a clamping groove 27 is uniformly formed in the inner ring wall of the second pipe 15;

when the transmission rod 4 is inserted into the second pipe 15, the second pipe 15 drives the transmission rod 4 to rotate through the friction force between the inner wall of the transmission rod 15 and the outer wall of the transmission rod 4, so that the output force of the polishing disc 5 is reduced in order to prevent slipping of the transmission rod 4 during rotation, the outer wall of the transmission rod 4 is uniformly provided with the plate groove 25, the outer wall of the plate groove 25 is in sealing sliding connection with the clamping plate 26, and gas is filled in the plate groove 25, so that the clamping plate 26 is pushed by the gas, when the transmission rod 4 is inserted into the second pipe 15, the clamping plate 26 is pushed by the inner wall of the second pipe 15 to move towards the inside of the clamping plate 26, and as the transmission rod 4 is continuously inserted, the clamping plate 26 is inserted into the inside of the clamping groove 27 under the pushing of the gas in the plate groove 25, so that the transmission rod 4 is fixed with the second pipe 15, and the clamping plate 26 is prevented from slipping, but when the transmission rod 4 leaves the inside of the second pipe 15, the inner wall of the clamping plate 26 is pushed by the inner wall of the clamping groove 27, so that the clamping plate 26 is pushed by the arc-shaped wall of the clamping plate 26, and the transmission rod 25 can be separated from the inside of the transmission rod 4.

As shown in fig. 3 and 6; the outer wall of the piston cylinder 11 is fixedly connected with an air outlet pipe 28, one end of the air outlet pipe 28 is communicated with the pressure release valve 13, and the other end of the air outlet pipe 28 penetrates through the machine body 1 to the inside and is obliquely opposite to the polishing disc 5;

when the polishing machine is used, the gas exhausted by the pressure release valve 13 is exhausted from the communicating air outlet pipe 28, and the air outlet pipe 28 penetrates through the machine body 1 to the inside of the machine body 1 and is obliquely opposite to the polishing disc 5, so that the gas exhausted by the pressure release valve 13 is blown against the polishing disc 5, and the polishing disc 5 is blown to cool when polishing pipes, so that the polishing effect is prevented from being reduced due to overhigh temperature during polishing.

As shown in fig. 3 and 5; one end of the transmission rod 4, which is far away from the disc changing wheel 2, is arranged in an arc shape;

in use, one end of the driving rod 4 is of an arc-shaped design, so that when the driving rod 4 is inserted into the second pipe 15, the arc-shaped wall of the driving rod 4 can guide the driving rod 4 and the second pipe 15 to each other, and the driving rod 4 is easy to be inserted into the second pipe 15.

The working principle of the invention is as follows:

referring to the attached drawings 1-6 of the specification, because different polishing discs 5 are needed for polishing a pipe, when the polishing discs 5 need to be replaced, a worker can rotate the disc replacement wheel 2 by rotating the handle rod 3, the disc replacement wheel 2 is connected with the transmission rod 4 in a sliding manner, different polishing discs 5 are sleeved on the transmission rod 4, replacement of the polishing discs 5 is simple and convenient, a single polishing disc 5 is not needed to be taken down manually, a new polishing disc 5 is installed, polishing time is saved, polishing cost is reduced, when the worker rotates the proper polishing disc 5 to the lower side, because the second tube 15 is connected to the inner wall of the first tube 14 in a sliding manner, the worker can pull the second tube 15 to slide on the inner wall of the first tube 14, so that the transmission rod 4 is inserted into the second tube 15, the inner wall of the second tube 15 and the outer wall of the transmission rod 4 are fixed through mutual friction force, the worker starts a servo motor 7 to rotate, the servo motor 7 drives the first tube 14 to rotate through a belt, the polishing disc is needed to rotate the second tube 14 to rotate, the second tube 15 is needed to be replaced by the second tube 15, and the second tube 15 is needed to rotate the second tube 4 to rotate, and the second tube 15 is needed to be placed on the inner wall of the second tube 14, and the second tube 15 is needed to rotate through the second tube 5 to be replaced, and the second tube 15 is needed to rotate, and the transmission rod 4 is needed to rotate the second tube 5 is rotated to be rotated, so that the inner tube 5 is needed to rotate the second tube 5 is rotated to be placed on the inner wall of the second tube 4 through the transmission rod 4, and the transmission rod 4 is in a rotary tube through the transmission rod 4 is in a rotary friction tube through a mutual friction force, and the mutual friction force is fixed, the second pipe 15 is pulled again, the transmission rod 4 is inserted into the second pipe 15, and the polishing disk 5 is replaced rapidly in the polishing process in a reciprocating manner;

Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a sand-grinding polisher, includes organism (1), its characterized in that: the disc changer comprises a machine body (1), wherein a disc changing wheel (2) is rotationally connected to the outer wall of the machine body (1), a handle bar (3) is rotationally connected to the outer wall of the disc changing wheel (2), the disc changing wheel (2) penetrates through the outer wall of the machine body (1) and extends to the inside of the machine body (1), a transmission rod (4) is uniformly and slidably connected to one end of the disc changing wheel (2), polishing discs (5) are arranged on the outer wall of the transmission rod (4), supporting rolls (6) are symmetrically and rotationally connected to the inner wall of the machine body (1), a servo motor (7) is fixedly connected to the outer wall of the machine body (1), a speed regulating button (8) is arranged on the outer wall of the bottom of the machine body (1), the speed regulating button (8) is electrically connected with the servo motor (7), and a transmission mechanism is arranged on the outer wall of the machine body (1) and used for driving the transmission rod (4) to rotate and regulate the height of the transmission rod.

The transmission mechanism comprises an air pump (9), the air pump (9) is fixedly connected to the outer wall of the machine body (1), a machine groove (10) is formed in the outer wall of the machine body (1), a piston cylinder (11) is fixedly connected to the outer wall of the machine body (1), a fixed ring (12) is fixedly connected to one end of the piston cylinder (11), a pressure release valve (13) is arranged on the outer wall of the piston cylinder (11), the inside of the piston cylinder (11) is communicated with an air outlet of the air pump (9) through a hose, a first pipe (14) is rotatably connected to the inner wall of the fixed ring (12), the outer wall of the first pipe (14) is rotatably connected with a main shaft of the servo motor (7) through a belt, the first pipe (14) penetrates through the machine groove (10) to the inside of the machine body (1), a second pipe (15) is slidably connected to the inner wall of the first pipe (14), and the transmission rod (4) can be inserted into the second pipe (15)

The inner wall of the second pipe (15) is fixedly connected with a disc (21), one end of the disc (21) is fixedly connected with a second spring (22), the inner wall of the first pipe (14) is fixedly connected with a circular ring (23), the other end of the second spring (22) is fixedly connected with the outer wall of the circular ring (23), one end, far away from the first pipe (14), of the second pipe (15) is rotationally connected with a rotary joint (24), and the rotary joint (24) is communicated with an air outlet of the air pump (9) through a hose;

the outer wall of the piston cylinder (11) is fixedly connected with an air outlet pipe (28), one end of the air outlet pipe (28) is communicated with the pressure release valve (13), and the other end of the air outlet pipe (28) penetrates through the machine body (1) to the inside and is obliquely opposite to the polishing disc (5).

2. The grinder/polisher in accordance with claim 1 wherein: the novel disc changer comprises a machine body (1), wherein a spring groove (16) is formed in the inner wall of the machine body (1), a first spring (17) is fixedly connected to the inner wall of the spring groove (16), a guide pillar (18) is fixedly connected to the other end of the first spring (17), the outer wall of the guide pillar (18) is slidably connected with the inner wall of the spring groove (16), a feedback groove (19) is uniformly formed in the outer wall of the disc changer wheel (2), the position of the feedback groove (19) and the position of the transmission rod (4) are oppositely arranged, and one end of the guide pillar (18), away from the first spring (17), is of a hemispherical design.

3. The grinder/polisher in accordance with claim 2 wherein: rubber pads (20) are fixedly connected to the inner walls of the feedback grooves (19).

4. The grinder/polisher in accordance with claim 1 wherein: the transmission rod (4) is far away from one end of the disc changing wheel (2) is evenly provided with a plate groove (25), the inner wall of the plate groove (25) is connected with a clamping plate (26) in a sealing sliding manner, two ends of the clamping plate (26) are arc-shaped, and the inner ring wall of the second tube (15) is evenly provided with a clamping groove (27).

5. The grinder/polisher in accordance with claim 1 wherein: one end of the transmission rod (4) far away from the disc changing wheel (2) is in an arc-shaped arrangement.