Coupling grinding device

Abstract

The utility model relates to the technical field of coupler production, in particular to a coupler grinding device which not only cleans and flushes sweeps generated after a coupler is ground and prevents the sweeps from influencing subsequent installation and use, but also cools the coupler by using clear water and accelerates cooling of the coupler. A base is included; the device further comprises a lifting mechanism, a fixing mechanism, a grinding mechanism, a flushing mechanism and a sweeping mechanism, the lifting mechanism is installed on the base and drives the coupler to ascend and descend, the fixing mechanism is installed on the lifting mechanism and drives the coupler to rotate, the grinding mechanism is installed on the base and grinds the coupler, and the flushing mechanism is installed on the base and flushes the coupler. The sweeping mechanism is installed on the fixing mechanism and sweeps the coupler.

Description

Technical Field

[0001] The utility model relates to the technical field of coupling production, in particular to a coupling grinding device. Background Art

[0002] A coupling is a device that connects two shafts or a shaft and a rotating part. The two shafts rotate together during the transmission of motion and power and do not disengage under normal circumstances. In the use of the coupling, it is generally assembled at the output end of the main shaft and the motor. As a connecting part, the main shaft and the output end of the motor are connected to rotate synchronously. In the production process of the coupling, in order to reduce the roughness of the coupling surface, its surface needs to be ground.

[0003] The existing coupling grinding device, for example, a coupling production grinding device disclosed in the utility model patent with application number 202320767380.6, has a main structure including a horizontal driving base, a clamping base, a grinding mechanism and a coupling body, the clamping base includes an electric rotating base, a dynamic clamping head and a fixed clamping head, a first electric cylinder is arranged on the outer side of the clamping base, the first electric cylinder includes an electric push rod, an electric rotating base is arranged at one end of the electric push rod, a dynamic clamping head is arranged at one end of the electric rotating base, and the coupling body is located between the dynamic clamping head and the fixed clamping head; when using When grinding, the coupling body is fixed on the clamping base, and the clamping base clamps the coupling body to ensure stability during the grinding process. The horizontal driving base can drive the clamping base to move horizontally, thereby driving the coupling body to move horizontally. The electric rotating base drives the dynamic clamping head, which drives the coupling body through the dynamic clamping head to rotate the coupling body. The grinding head of the grinding mechanism moves down and contacts the surface of the coupling body to grind the coupling body during the movement. The horizontal driving base and the electric rotating base continuously adjust the position of the coupling body to achieve comprehensive grinding of the coupling body.

[0004] However, the existing grinding device does not process the waste chips after grinding, and the waste chips are easily left on the surface of the coupling, affecting subsequent use. In addition, the coupling has a high temperature after grinding and is difficult to transport in time, affecting work efficiency. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a coupling grinding device which not only cleans and washes the waste chips generated after the coupling is ground to prevent the waste chips from affecting subsequent installation and use, but also uses clean water to cool the coupling to accelerate the cooling of the coupling.

[0006] The utility model discloses a coupling grinding device, comprising a base; further comprising a lifting mechanism, a fixing mechanism, a grinding mechanism, a flushing mechanism and a cleaning mechanism. The lifting mechanism is installed on the base and drives the coupling to lift and lower; the fixing mechanism is installed on the lifting mechanism and drives the coupling to rotate; the grinding mechanism is installed on the base and grinds the coupling; the flushing mechanism is installed on the base and flushes the coupling; the cleaning mechanism is installed on the fixing mechanism and cleans the waste chips of the coupling; a worker fixes the coupling on the fixing mechanism, and then the lifting mechanism drives the fixing mechanism to adjust the height so that the grinding mechanism grinds the coupling; at the same time, the fixing mechanism drives the coupling to rotate, so that the grinding mechanism grinds one circle of the coupling; while the coupling rotates, the flushing mechanism flushes the surface of the coupling to reduce the surface temperature of the coupling; at the same time, the flushing mechanism and the cleaning mechanism cooperate to clean the waste chips remaining on the surface of the coupling.

[0007] Preferably, the lifting mechanism includes two groups of hydraulic cylinders, a guide rail box, a servo motor, a lead screw and a slider, the two groups of hydraulic cylinders are installed on the base, the bottom end of the guide rail box is connected to the top end of the two groups of hydraulic cylinders, a sliding groove is opened on the guide rail box, the servo motor is installed on the outer wall of the guide rail box, the lead screw is rotatably installed in the sliding groove of the guide rail box, and the slider is slidably installed on the servo motor; when the worker fixes the coupling on the fixing mechanism, the hydraulic cylinder pushes the guide rail box to lift upward, thereby adjusting the distance between the coupling and the grinding mechanism, so that the grinding mechanism grinds the coupling, and then the servo motor is started, the servo motor drives the lead screw to rotate, and the lead screw drives the slider to move left and right, thereby facilitating the grinding mechanism to grind the coupling more comprehensively.

[0008] Preferably, the fixing mechanism includes a fixing box, a chip removal pipe, two groups of brackets, a motor, a rotating shaft, an electric cylinder and two groups of fixing plates, the bottom end of the fixing box is connected to the top end of the slider, a cavity is provided inside the fixing box and there is no cover on the top end, a chip removal opening is provided at the bottom end of the fixing box, the chip removal pipe is installed at the bottom end of the fixing box and is connected to the chip removal opening of the fixing box, the two groups of brackets are installed in the cavity of the fixing box, the motor is installed on the outer side wall of the fixing box, the rotating shaft is rotatably installed in the cavity of the fixing box and is connected to the motor, the electric cylinder is installed on the outer side wall of the fixing box and is connected to the motor One relative to the other, one of the two sets of fixed plates is fixedly installed on the rotating shaft one, and the other set of fixed plates is rotatably installed on the electric cylinder and is located in the cavity of the fixed box; the coupling is placed on the two sets of brackets, the electric cylinder is started, and the electric cylinder pushes the fixed plate to facilitate the two sets of fixed plates to clamp the coupling, and then the motor one is started, the motor one drives the rotating shaft one to rotate, the rotating shaft one drives the fixed plate to rotate, and the two sets of fixed plates drive the coupling to rotate, which is convenient for the grinding mechanism to grind the coupling, and the waste water after flushing and the waste chips generated by grinding are discharged from the equipment through the chip discharge port and the chip discharge pipe at the bottom end of the fixed box.

[0009] Preferably, the grinding mechanism includes a second motor, a reducer, a transmission shaft and a grinding wheel, the bottom end of the second motor is connected to the top of the base, the bottom end of the reducer is connected to the top of the base, the transmission shaft is rotatably installed on the base and longitudinally connected to the reducer, and the grinding wheel is installed on the transmission shaft; start the second motor, the second motor drives the transmission shaft to rotate through the reducer, the transmission shaft drives the grinding wheel to rotate, and the grinding wheel grinds the coupling.

[0010] Preferably, the flushing mechanism includes a second transmission shaft, a water pump, a water suction pipe, a water delivery hose, a water distribution pipe, a plurality of nozzles, a knob, a second rotation shaft and a first connecting plate. The second transmission shaft is rotatably mounted on the reducer, the bottom end of the water pump is connected to the top end of the base, the water suction pipe is mounted on the water pump, the water delivery hose is mounted on the water pump, the water distribution pipe is rotatably mounted on the base and connected to the inside of the water delivery hose, the plurality of nozzles are mounted on the water distribution pipe and connected to the inside of the water distribution pipe, the knob is mounted on the water distribution pipe, the second rotation shaft is rotatably mounted on the knob, and the first connecting plate is Installed on rotating shaft two; the reducer drives transmission shaft two to rotate, transmission shaft two drives the water pump to work, the water pumping pipe is connected to the external water source, the water pump draws out clean water through the water pumping pipe, and then transports the clean water to the water distribution pipe through the water supply hose, the water distribution pipe distributes the clean water to multiple groups of nozzles, the nozzles spray the clean water on the surface of the coupling, which can not only reduce the surface temperature of the coupling, but also rinse the residual waste chips, and adjust the angle of the water distribution pipe by rotating knob one, so as to cooperate with the cleaning mechanism to clean the coupling.

[0011] Preferably, the cleaning mechanism includes a third shaft, a brush, a second knob, a fourth shaft, a second connecting plate, a telescopic rod and a lock. The third shaft is rotatably mounted on the fixed box, the brush is mounted on the third shaft, the second knob is mounted on the third shaft, the fourth shaft is rotatably mounted on the second knob, the second connecting plate is mounted on the third shaft, one end of the telescopic rod is rotatably connected to the second connecting plate, the other end of the telescopic rod is rotatably connected to the first connecting plate, and the lock is mounted on the telescopic rod; the rotation of the first knob drives the second shaft and the first connecting plate to rotate, the first connecting plate pulls the fourth shaft and the second connecting plate through the telescopic rod, the second connecting plate drives the second knob to rotate, the second knob drives the third shaft to rotate, the third shaft drives the brush to rotate, thereby adjusting the cleaning angle, so that the cleaning angle of the brush and the flushing angle of the nozzle are adjusted synchronously, and then the brush cleans the waste debris on the surface of the coupling, and by setting the lock, it is convenient to adjust the length of the telescopic rod to adapt to the spacing between the fixing mechanism and the flushing mechanism.

[0012] Preferably, the bracket is made of rubber material; since the bracket is made of rubber material, it has wear resistance and certain elasticity and ductility, and can not only support the coupling, but also adjust the opening diameter of the bracket according to couplings of different diameters.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the worker fixes the coupling on the fixing mechanism, and then the lifting mechanism drives the fixing mechanism to adjust the height, so that the grinding mechanism grinds the coupling, and at the same time the fixing mechanism drives the coupling to rotate, so that the grinding mechanism grinds one circle of the coupling, and while the coupling rotates, the flushing mechanism flushes the surface of the coupling to reduce the surface temperature of the coupling, and at the same time the flushing mechanism and the cleaning mechanism cooperate to clean the waste chips remaining on the surface of the coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;

[0015] Figure 2 It is a cross-sectional axonometric structural diagram of the lifting mechanism of the utility model;

[0016] Figure 3 It is a schematic diagram of the cross-section axonometric structure of the fixing mechanism and the grinding mechanism of the utility model;

[0017] Figure 4 It is a partially enlarged cross-sectional axonometric structural schematic diagram of the flushing mechanism of the utility model;

[0018] Figure 5 It is a partially enlarged axonometric structural schematic diagram of the cleaning mechanism of the utility model.

[0019] Markings in the attached figure: 01, base; 02, lifting mechanism; 21, hydraulic cylinder; 22, guide rail box; 23, servo motor; 24, lead screw; 25, slider; 03, fixing mechanism; 31, fixing box; 32, chip removal pipe; 33, bracket; 34, motor 1; 35, shaft 1; 36, electric cylinder; 37, fixing plate; 04, grinding mechanism; 41, motor 2; 42, reducer; 43, transmission Axis one; 44, grinding wheel; 05, flushing mechanism; 51, transmission shaft two; 52, water pump; 53, water suction pipe; 54, water supply hose; 55, water distribution pipe; 56, nozzle; 57, knob one; 58, shaft two; 59, connecting plate one; 06, cleaning mechanism; 61, shaft three; 62, brush; 63, knob two; 64, shaft four; 65, connecting plate two; 66, telescopic rod; 67, lock. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] Example 1

[0022] The utility model is a coupling grinding device, including a base 01; also includes a lifting mechanism 02, a fixing mechanism 03, a grinding mechanism 04, a flushing mechanism 05 and a cleaning mechanism 06, the lifting mechanism 02 is installed on the base 01 and drives the coupling to lift and lower, the fixing mechanism 03 is installed on the lifting mechanism 02 and drives the coupling to rotate, the grinding mechanism 04 is installed on the base 01 and grinds the coupling, the flushing mechanism 05 is installed on the base 01 to flush the coupling, the cleaning mechanism 06 is installed on the fixing mechanism 03 and cleans the coupling waste; the lifting mechanism 02 includes two groups of hydraulic cylinders 21, a guide box 22, a servo motor 23, a lead screw 24 and a slider 25, the two groups of hydraulic cylinders 21 are installed on the base 01, the guide box The bottom end of 22 is connected to the top end of the two groups of hydraulic cylinders 21, a sliding groove is opened on the guide rail box 22, the servo motor 23 is installed on the outer wall of the guide rail box 22, the lead screw 24 is rotatably installed in the sliding groove of the guide rail box 22, and the slider 25 is slidably installed on the servo motor 23; the fixing mechanism 03 includes a fixed box 31, a chip removal pipe 32, two groups of brackets 33, a motor 34, a rotating shaft 35, an electric cylinder 36 and two groups of fixed plates 37, the bottom end of the fixed box 31 is connected to the top end of the slider 25, the interior of the fixed box 31 is provided with a cavity and the top end is uncovered, the bottom end of the fixed box 31 is provided with a chip removal port, the chip removal pipe 32 is installed at the bottom end of the fixed box 31 and is connected to the chip removal port of the fixed box 31, and the two groups of brackets 33 are installed in the cavity of the fixed box 31 , the motor 34 is mounted on the outer wall of the fixed box 31, the rotating shaft 35 is rotatably mounted in the cavity of the fixed box 31 and connected to the motor 34, the electric cylinder 36 is mounted on the outer wall of the fixed box 31 and opposite to the motor 34, one set of the two sets of fixed plates 37 is fixedly mounted on the rotating shaft 35, and the other set of the fixed plates 37 is rotatably mounted on the electric cylinder 36 and located in the cavity of the fixed box 31; the grinding mechanism 04 includes a motor 41, a reducer 42, a transmission shaft 43 and a grinding wheel 44, the bottom end of the motor 41 is connected to the top of the base 01, the bottom end of the reducer 42 is connected to the top of the base 01, the transmission shaft 43 is rotatably mounted on the base 01 and longitudinally connected to the reducer 42, and the grinding wheel 4 4 is installed on the transmission shaft 1 43; the flushing mechanism 05 includes a transmission shaft 2 51, a water pump 52, a water suction pipe 53, a water delivery hose 54, a water distribution pipe 55, a plurality of nozzles 56, a knob 1 57, a rotating shaft 2 58 and a connecting plate 1 59, the transmission shaft 2 51 is rotatably installed on the reducer 42, the bottom end of the water pump 52 is connected to the top end of the base 01, the water suction pipe 53 is installed on the water pump 52, the water delivery hose 54 is installed on the water pump 52, the water distribution pipe 55 is rotatably installed on the base 01 and communicated with the inside of the water delivery hose 54, the plurality of nozzles 56 are all installed on the water distribution pipe 55 and communicated with the inside of the water distribution pipe 55, the knob 1 57 is installed on the water distribution pipe 55, the rotating shaft 2 58 is rotatably installed on the knob 1 57, and the connecting plate 1 59 is installed on the rotating shaft 2 58;When it is working, first place the coupling on two groups of brackets 33, start the electric cylinder 36, the electric cylinder 36 pushes the fixed plate 37, so that the two groups of fixed plates 37 can clamp the coupling, the hydraulic cylinder 21 pushes the guide box 22 to lift upward, so as to adjust the distance between the coupling and the grinding mechanism 04, start the motor 2 41, the motor 2 41 drives the transmission shaft 1 43 to rotate through the reducer 42, the transmission shaft 1 43 drives the grinding wheel 44 to rotate, the grinding wheel 44 grinds the coupling, and then start the motor 1 34, the motor 1 34 drives the rotating shaft 1 35 to rotate, the rotating shaft 1 35 drives the fixed plate 37 to rotate, the two groups of fixed plates 37 drive the coupling to rotate, start the servo motor 23, the servo motor 23 drives The lead screw 24 rotates, and the lead screw 24 drives the slider 25 to move left and right, so that the grinding mechanism 04 can grind the coupling more comprehensively. At the same time, the reducer 42 drives the transmission shaft 2 51 to rotate, and the transmission shaft 2 51 drives the water pump 52 to work. The water pump 53 is connected to the external water source. The water pump 52 extracts clean water through the water pump 53, and then transports the clean water to the water distribution pipe 55 through the water hose 54. The water distribution pipe 55 distributes the clean water to multiple groups of nozzles 56. The nozzles 56 spray the clean water on the surface of the coupling, which can not only reduce the surface temperature of the coupling, but also rinse the residual waste chips. The waste water after rinsing and the waste chips generated by grinding are discharged from the equipment through the bottom chip discharge port of the fixed box 31 and the chip discharge pipe 32. ;

[0023] Example 2

[0024] like Figures 1 to 5As shown, a coupling grinding device of the utility model is based on Example 1; the cleaning mechanism 06 includes a rotating shaft 3 61, a brush 62, a rotating knob 2 63, a rotating shaft 4 64, a connecting plate 2 65, a telescopic rod 66 and a lock 67, the rotating shaft 3 61 is rotatably mounted on the fixed box 31, the brush 62 is mounted on the rotating shaft 3 61, the rotating knob 2 63 is mounted on the rotating shaft 3 61, the rotating shaft 4 64 is rotatably mounted on the rotating knob 2 63, the connecting plate 2 65 is mounted on the rotating shaft 3 61, one end of the telescopic rod 66 is rotatably connected to the connecting plate 2 65, the other end of the telescopic rod 66 is rotatably connected to the connecting plate 1 59, and the lock 67 is mounted on the telescopic rod 6 6; the bracket 33 is made of rubber; when it is working, the coupling is first placed on the two sets of brackets 33, the electric cylinder 36 is started, the electric cylinder 36 pushes the fixed plate 37, and the two sets of fixed plates 37 are convenient for clamping the coupling, the hydraulic cylinder 21 pushes the guide box 22 to lift upward, thereby adjusting the distance between the coupling and the grinding mechanism 04, and starting the motor 41. The motor 41 drives the transmission shaft 43 to rotate through the reducer 42, and the transmission shaft 43 drives the grinding wheel 44 to rotate, and the grinding wheel 44 grinds the coupling, and then the motor 34 is started, the motor 34 drives the rotating shaft 35 to rotate, and the rotating shaft 35 drives the fixed The fixed plate 37 rotates, and the two sets of fixed plates 37 drive the coupling to rotate, start the servo motor 23, the servo motor 23 drives the lead screw 24 to rotate, and the lead screw 24 drives the slider 25 to move left and right, so as to facilitate the grinding mechanism 04 to grind the coupling more comprehensively. At the same time, the reducer 42 drives the transmission shaft 2 51 to rotate, and the transmission shaft 2 51 drives the water pump 52 to work. The water pump 53 is connected to the external water source. The water pump 52 extracts clean water through the water pump 53, and then transports the clean water to the water distribution pipe 55 through the water hose 54. The water distribution pipe 55 distributes the clean water to multiple groups of nozzles 56, and the nozzles 56 spray the clean water on the surface of the coupling, which can not only The surface temperature of the coupling can be cooled down, and the residual waste chips can be flushed. The rotation of knob 1 57 drives shaft 2 58 and connecting plate 1 59 to rotate. Connecting plate 1 59 pulls shaft 4 64 and connecting plate 2 65 through telescopic rod 66. Connecting plate 2 65 drives knob 2 63 to rotate. Knob 2 63 drives shaft 3 61 to rotate. Shaft 3 61 drives brush 62 to rotate to adjust the cleaning angle, so that the cleaning angle of brush 62 and the flushing angle of nozzle 56 are adjusted synchronously. Then brush 62 cleans the waste chips on the surface of the coupling, and the waste water used for flushing and the waste chips generated by grinding are discharged from the equipment through the chip discharge port at the bottom end of fixed box 31 and chip discharge pipe 32.

[0025] The servo motor 23, motor 1 34, motor 2 41, reducer 42 and water pump 52 of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manuals, without the need for creative work by technicians in this field.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A coupling grinding device, comprising a base (01); characterized in that: The invention also comprises a lifting mechanism (02), a fixing mechanism (03), a grinding mechanism (04), a flushing mechanism (05) and a cleaning mechanism (06); the lifting mechanism (02) is mounted on the base (01) and drives the coupling to lift and lower; the fixing mechanism (03) is mounted on the lifting mechanism (02) and drives the coupling to rotate; the grinding mechanism (04) is mounted on the base (01) and grinds the coupling; the flushing mechanism (05) is mounted on the base (01) and flushes the coupling; and the cleaning mechanism (06) is mounted on the fixing mechanism (03) and cleans the waste chips of the coupling.

2. A coupling grinding device as claimed in claim 1, characterized in that: The lifting mechanism (02) comprises two groups of hydraulic cylinders (21), a guide rail box (22), a servo motor (23), a lead screw (24) and a slider (25). The two groups of hydraulic cylinders (21) are mounted on the base (01). The bottom end of the guide rail box (22) is connected to the top end of the two groups of hydraulic cylinders (21). The guide rail box (22) is provided with a sliding groove. The servo motor (23) is mounted on the outer wall of the guide rail box (22). The lead screw (24) is rotatably mounted in the sliding groove of the guide rail box (22). The slider (25) is slidably mounted on the servo motor (23).

3. A coupling grinding device as claimed in claim 2, characterized in that: The fixing mechanism (03) comprises a fixing box (31), a chip removal pipe (32), two sets of brackets (33), a motor (34), a rotating shaft (35), an electric cylinder (36) and two sets of fixing plates (37). The bottom end of the fixing box (31) is connected to the top end of the slider (25). The fixing box (31) is provided with a cavity inside and has no cover on the top end. The bottom end of the fixing box (31) is provided with a chip removal opening. The chip removal pipe (32) is installed at the bottom end of the fixing box (31) and is connected to the chip removal opening of the fixing box (31). The two sets of brackets (33) are installed In the cavity of the fixed box (31), a motor 1 (34) is mounted on the outer side wall of the fixed box (31), a rotating shaft 1 (35) is rotatably mounted in the cavity of the fixed box (31) and connected to the motor 1 (34), an electric cylinder (36) is mounted on the outer side wall of the fixed box (31) and is opposite to the motor 1 (34), one set of the two sets of fixed plates (37) is fixedly mounted on the rotating shaft 1 (35), and the other set of the fixed plates (37) is rotatably mounted on the electric cylinder (36) and is located in the cavity of the fixed box (31).

4. A coupling grinding device as claimed in claim 1, characterized in that: The grinding mechanism (04) comprises a second motor (41), a speed reducer (42), a first transmission shaft (43) and a grinding wheel (44); the bottom end of the second motor (41) is connected to the top end of the base (01); the bottom end of the speed reducer (42) is connected to the top end of the base (01); the first transmission shaft (43) is rotatably mounted on the base (01) and longitudinally connected to the speed reducer (42); and the grinding wheel (44) is mounted on the first transmission shaft (43).

5. A coupling grinding device as claimed in claim 4, characterized in that: The flushing mechanism (05) comprises a second transmission shaft (51), a water pump (52), a water extraction pipe (53), a water delivery hose (54), a water distribution pipe (55), a plurality of nozzles (56), a first knob (57), a second rotation shaft (58) and a first connecting plate (59). The second transmission shaft (51) is rotatably mounted on the reducer (42). The bottom end of the water pump (52) is connected to the top end of the base (01). The water extraction pipe (53) is mounted on the water pump (52). A water delivery hose (54) is mounted on a water pump (52), a water distribution pipe (55) is rotated on a base (01) and communicated with the inside of the water delivery hose (54), a plurality of nozzles (56) are mounted on the water distribution pipe (55) and communicated with the inside of the water distribution pipe (55), a first rotary knob (57) is mounted on the water distribution pipe (55), a second rotary shaft (58) is rotatably mounted on the first rotary knob (57), and a first connecting plate (59) is mounted on the second rotary shaft (58).

6. A coupling grinding device as claimed in claim 3, characterized in that: The cleaning mechanism (06) comprises a rotating shaft three (61), a brush (62), a rotating knob two (63), a rotating shaft four (64), a connecting plate two (65), a telescopic rod (66) and a lock (67). The rotating shaft three (61) is rotatably mounted on the fixed box (31), the brush (62) is mounted on the rotating shaft three (61), the rotating knob two (63) is mounted on the rotating shaft three (61), the rotating shaft four (64) is rotatably mounted on the rotating knob two (63), the connecting plate two (65) is mounted on the rotating shaft three (61), one end of the telescopic rod (66) is rotatably connected to the connecting plate two (65), the other end of the telescopic rod (66) is rotatably connected to the connecting plate one (59), and the lock (67) is mounted on the telescopic rod (66).

7. A coupling grinding device as claimed in claim 3, characterized in that: The support (33) is also made of rubber material.

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