CN210476549U

CN210476549U - Grinding device for outer ring of shaft-connected bearing

Info

Publication number: CN210476549U
Application number: CN201921367505.6U
Authority: CN
Inventors: 王登现; 郭延伟; 马静
Original assignee: QINGDAO TAIDE AUTOMOBILE BEARING CO Ltd
Current assignee: Qingdao Tede Bearing Technology Co ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-05-08
Anticipated expiration: 2029-08-21

Abstract

The utility model provides a grinding device for an outer ring of a bearing, which comprises a first clamping device, a second clamping device, a linear grinding device and a swinging grinding device which are arranged on a frame; the linear grinding device comprises a first oilstone frame, and oilstones on the first oilstone frame grind the linear part of the outer ring to be machined on the first clamping device; the swing grinding device comprises a fixed part and a movable part which are arranged on the base, a second oilstone frame is arranged on the fixed part, and oilstones on the second oilstone frame perform swing grinding on a channel part of an outer ring to be machined on the second clamping device; the movable part can move along the axial direction of the outer ring to be processed through a first ball screw and a first slide block guide rail; the driving part of the crank rocker mechanism is arranged on the movable part, and the driven part is arranged on the fixed part and used for driving the second oilstone frame; the swing grinding device can move along the axial direction of the outer ring to be processed through the second ball screw and the second slide block guide rail. The device has the advantages of high processing efficiency, high automation degree and good processing quality.

Description

Grinding device for outer ring of shaft-connected bearing

Technical Field

The utility model relates to a shaft coupling bearing processing equipment especially relates to a shaft coupling bearing inner race grinder.

Background

In modern machining, in the field of precision part machining, grinding is widely used as a high-precision finishing surface machining mode. Compared with grinding, under the condition of meeting the requirement of achieving the same roughness effect, the grinding efficiency is higher, the surface roughness of the machined part can be greatly improved, particularly, the mechanical vibration in the grinding process is low, and the surface of the machined part can obtain low waviness. In the field of bearing manufacturing, grinding processes are widely used.

In recent years, in order to meet the use requirements of the automobile industry, a new bearing design scheme is provided in the bearing industry: a shaft coupling bearing in which a bearing, a shaft and a lubricating member are integrated. The moving surfaces of the ring and the main shaft of the shaft coupling bearing are not of a single construction but of various combinations, for example of a combination of straight and curved (channel) shapes, the curved shape being generally a circular arc, but also of special form. Fig. 1 and 2 show that a straight line part 101 and a four-point contact type spherical groove (hereinafter referred to as a groove 102) are provided on an outer ring 100 to be processed, and this groove 102 is also referred to as a "peach-shaped groove" (axial cross-sectional shape) in the industry, that is, the axial cross section of the groove 102 is two arc lines, the radii of the circles where the two arc lines are located are R1 and R2, respectively, and a certain center distance H is provided between the centers of the circles where the two arc lines are located, so that two arc lines (arc lines in the circumferential direction during processing) need to be processed respectively during grinding.

At present, as for a grinding method of a shaft-connected bearing outer ring, in the prior art, the outer ring to be processed is driven to rotate by two rolling shafts, and different surfaces to be processed are processed at different stations by adopting a multi-station processing mode according to requirements. And the outer ring to be processed is grabbed by a mechanical arm or a worker and is placed on different stations for grinding, after the grinding is finished, the mechanical arm or the worker grabs a workpiece and places the workpiece on another station for grinding other surfaces, and the like is performed until all the surfaces to be processed are ground, and the outer ring after the processing is taken out. When in processing, the outer ring to be processed freely rotates under the driving of the roller, the outer ring is easy to move in a string mode, the positioning is not accurate enough, the swinging center of the oilstone is difficult to coincide with the center of the channel, the grinding quality is difficult to guarantee, particularly for a peach-shaped channel structure, the processing of two radiuses R1 and R2 is difficult, and the processed product cannot meet the quality requirement.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a bearing inner race grinder guarantees grinding efficiency and quality to overcome the defect in the prior art.

In order to solve the technical problem, the utility model discloses a following technical scheme: a grinding device for an outer ring in a bearing comprises a first clamping device, a second clamping device, a linear grinding device and a swinging grinding device, wherein the first clamping device, the second clamping device, the linear grinding device and the swinging grinding device are arranged on a rack;

the linear grinding device comprises a first oilstone frame which reciprocates along the linear direction, and oilstones arranged on the first oilstone frame can grind the linear part of the outer ring to be machined, which is clamped on the first clamping device;

the swinging grinding device comprises a fixed part and a movable part which are arranged on the base, a second oilstone frame capable of swinging is arranged on the fixed part, and oilstones arranged on the second oilstone frame can swing and grind a channel part of the outer ring to be processed and clamped on the second clamping device; the movable part is arranged on the base through a first ball screw and a first slide block guide rail and can axially move along the outer ring to be processed;

the driving part of the crank rocker mechanism is arranged on the movable part, and the driven part is arranged on the fixed part and used for driving the second oilstone frame; the swing grinding device is arranged on the rack through a second ball screw and a second slide block guide rail and can axially move along an outer ring to be machined.

Preferably, the rack is further provided with a manipulator for transferring the outer ring to be machined between the first clamping device and the second clamping device.

Furthermore, a traveling frame is arranged between the first clamping device and the second clamping device, a movable block is arranged on the traveling frame, and the manipulator is installed on the movable block.

Preferably, the linear grinding device comprises a crank-slider mechanism, the crank-slider mechanism comprises a first crank, a first connecting rod and a slider, the first crank is rotatably mounted on the rack through a first motor, two ends of the first connecting rod are respectively hinged to the first crank and the slider, and the first oilstone frame is mounted on the slider.

Preferably, the crank-rocker mechanism comprises a second crank, a second connecting rod and a rocker, the crank is rotatably mounted on the movable part through a second motor, the rocker is swingably mounted on the fixed part and connected with the second oilstone frame, and two ends of the second connecting rod are respectively hinged to the second crank and the rocker.

Furthermore, the second crank comprises a rotary disc and a connecting point eccentrically arranged on the rotary disc, one end of the second connecting rod is hinged to the connecting point, and the second motor drives the rotary disc to rotate through a transmission belt.

Preferably, be equipped with the first pressure cylinder that the piston rod is decurrent on the first oilstone frame, it has the through-hole of placing the oilstone to open on the first oilstone frame, the piston rod of first pressure cylinder can be followed the top and pressed at the oilstone top surface.

Preferably, a second pressure cylinder with a piston rod facing downwards is arranged on the second oilstone frame, a through hole for placing the oilstone is formed in the second oilstone frame, and the piston rod of the second pressure cylinder can be pressed on the top surface of the oilstone from the upper side.

Preferably, the first clamping device, the second clamping device, the linear grinding device and the swing grinding device are all controlled by a controller.

Preferably, the first clamping device and the second clamping device are both electromagnetic centerless clamps.

As above, the utility model discloses axle is bearing inner race grinder even has following beneficial effect:

this device adopts unipolar formula electromagnetism centerless anchor clamps through first, second clamping device, and it is rotatory through the electromagnetism absorption outer lane, and the rotation rate is controllable, guarantees to wait to process the stability of outer lane in the course of working.

The device grinds a linear part and a channel part of an outer ring through a linear grinding device and a swing grinding device respectively. Wherein swing grinder passes through the swing of motor control oilstone frame to accomplish through two sets of ball screw structures and grind respectively two sections circular arcs of peach type ditch, machining efficiency is high, and degree of automation is high, and processingquality is good.

Drawings

FIG. 1 is a sectional view of an outer race of a bearing assembly.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic diagram of the present invention.

Fig. 4 is a top view of the first clamping device and the linear grinding device of the present invention.

Fig. 5 is a top view of the second clamping device and the swing grinding device of the present invention.

Fig. 6 is a schematic view of the first and second oilstone frames of the present invention.

Fig. 7 is a cross-sectional view taken at B-B in fig. 6.

Fig. 8 is a first structural schematic diagram of the middle crank-rocker mechanism of the present invention.

Fig. 9 is a schematic view of another station of fig. 8.

Fig. 10 is a second structural schematic diagram of the crank-rocker mechanism of the present invention.

In the figure:

1 frame 2 first holding device

3 second clamping device 4 Linear grinding device

5 swinging grinding device 6 mechanical arm

8 controller 41 first oilstone shelf

42 first crank 43 first link

44 slide 45 first motor

411 first pressure bar 412 spring clip

413 ram 414 oilstone box

51 base 52 fixing part

53 second oilstone shelf with movable part 54

55 first ball screw 56 first slide guide

57 second ball screw 58 second slider rail

541 second pressing bar 542 elastic pressing sheet

543 indenter 544 oilstone box

561 slider 551 third Motor

571 fourth motor 61 running rack

71 second crank 72 second connecting rod

73 rocker 74 second motor

75 outer ring to be processed of transmission belt 100

101 straight line portion 102 channel

200 oil stone

Detailed Description

The drawings in the specification show the structure, ratio, size, etc. only for the purpose of matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and not for the purpose of limiting the present invention, so the present invention does not have the essential meaning in the art, and any structure modification, ratio relationship change or size adjustment should fall within the scope covered by the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms "upper", "lower", "left", "right", "middle", and the like used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.

The utility model relates to an outer lane grinder in axle coupling bearing, mainly used carry out abrasive machining to axle coupling bearing inner race (carry out super finishing through the oilstone promptly), as shown in fig. 1 and fig. 2, for the structural schematic diagram of waiting to process outer lane 100 in the axle coupling bearing, it includes linear portion 101 and channel 102, channel 102 is four point contact spherical channel, also is called "peach type ditch" in the trade (the axial cross sectional shape is similar to the peach shape), and channel 102 axial cross-section is two sections pitch arcs promptly, has certain centre of a circle apart from H between the centre of a circle of two sections pitch arcs place circles, consequently need process respectively two sections pitch arcs (the cambered surface that is the circumferencial direction during processing) when grinding.

Referring to fig. 3 to 5, the apparatus includes a first holding device 2, a second holding device 3, a linear grinding device 4, and a swing grinding device 5 mounted on a frame 1. The linear grinding device 4 comprises a first oilstone frame 41 which reciprocates along the linear direction, and oilstones mounted on the first oilstone frame 41 can grind the linear part of the outer ring to be machined clamped on the first clamping device 2. The linear grinding device 4 comprises a crank-slider mechanism, the crank-slider mechanism comprises a first crank 42, a first connecting rod 43 and a slider 44, the first crank 42 is rotatably mounted on the machine frame 1 through a first motor 45, two ends of the first connecting rod 43 are respectively hinged with the first crank 42 and the slider 44, and the first oilstone frame 41 is mounted on the slider 44. In other embodiments, the linear grinding device 4 includes an oscillating rod capable of moving back and forth, and the reciprocating speed of the oscillating cylinder is controlled by adjusting the air flow rate, so that the oscillating rod drives the first oilstone frame 41 to make a reciprocating linear motion to grind the outer ring to be processed; the oscillating bar is in the prior art, and the specific structure can adopt Chinese patent with application number 201721626413.6.

With reference to fig. 3, 5 and 8, the swing grinding device 5 of the present device includes a fixed portion 52 and a movable portion 53 disposed on a base 51, and a second oilstone frame 54 capable of swinging is disposed on the fixed portion 52; the oilstone arranged on the second oilstone frame 54 can swing and grind the channel part of the outer ring to be machined clamped on the second clamping device 3. The movable portion 53 is provided on the base 51 through a first ball screw 55 and a first slider rail 56, and is movable in the axial direction of the outer ring to be processed. Comparing fig. 8 and 9, when the first ball screw 55 is driven to rotate by the third motor 551, the movable portion 53 moves in a straight line, thereby adjusting the distance between the fixed portion 52 and the movable portion 53.

In practical use, the movable portion 53 has two specific embodiments, the first embodiment: the movable portion 53 is an independent component, that is, the nut on the first ball screw 55 and the slider 561 on the first slider guide rail 56 are both connected to the movable portion 53, and when the screw on the first ball screw 55 rotates, the screw drives the slider 561 to drive the movable portion 53 to move along the guide rail. The second embodiment: the movable portion 53 is integrated with the slider on the first slider guide 56, that is, the movable portion 53 is regarded as a slider, and when the screw on the first ball screw 55 rotates, it drives the movable portion 53 to move along the guide. This embodiment preferably employs the first embodiment, with reference to the structures shown in fig. 3, 8, and 9.

Referring to fig. 8, the crank and rocker mechanism comprises a second crank 71, a second connecting rod 72 and a rocker 73, the second crank 71 is rotatably mounted on the movable portion 53 through a second motor 74, the rocker 73 is swingably mounted on the fixed portion 52 and connected with the second oilstone frame 54, two ends of the second connecting rod 72 are respectively hinged to the second crank 71 and the rocker 73, the second crank 71 is a driving portion of the crank and rocker mechanism, and the rocker 73 is a driven portion of the crank and rocker mechanism, in operation, when the second crank 71 rotates, the second connecting rod 72 is driven to reciprocate along a preset track to drive the rocker 73 to reciprocate within a certain angle range, so as to achieve swing grinding of a channel on machining, the swing frequency is achieved by adjusting the rotation speed of the second motor 74, in the process of grinding, the second oilstone frame 54 and the rocker reach a stable swing center, the swing grinding center of the rocker 54, the swing grinding efficiency of the rocker is improved, and the grinding efficiency of the rocker is improved, when grinding efficiency of the rocker is improved, the grinding efficiency of the rocker channel on the outer side of the grinding track, the rocker is improved grinding efficiency, the grinding efficiency of the rocker is improved grinding efficiency of the grinding track, the rocker structure, the grinding efficiency of the grinding track, the grinding efficiency of the grinding track, the grinding efficiency of the grinding track, the grinding efficiency of the grinding track, the grinding efficiency of.

As shown in fig. 3 and 5, in the present apparatus, the swing grinding apparatus 5 is disposed on the frame 1 through a second ball screw 57 and a second slider guide 58, and is capable of moving in the axial direction of the outer ring to be processed, and the second ball screw 57 is driven to rotate by a fourth motor 571. In actual use, there are two specific embodiments of the movement of the oscillating grinding device 5, the first embodiment: the base 51 is a separate component, that is, the nut on the second ball screw 57 and the slider on the second slider guide 58 are both connected to the base 51, and when the screw on the second ball screw 57 rotates, the screw drives the slider to bring the base 51 to move along the guide. The second embodiment: the base 51 and the slide block on the second slide block guide rail 58 are of an integral structure, that is, the base 51 is regarded as a slide block, and when the screw on the second ball screw 57 rotates, the screw drives the base 51 to move along the guide rail. This embodiment preferably employs the second embodiment, i.e., the structure shown in fig. 3 and 5. The position of the swing grinding device 5 is adjusted, that is, the center distance H (see fig. 2) between the centers of the two arcs (arcs in the circumferential direction during machining) is adjusted, and the two oilstone swing centers are respectively superposed with the center of the circle where the arcs are located by adjusting the position H of the swing grinding device 5, so that the arcs in the two circumferential directions are ground respectively.

The device realizes the switching of the swing position of the rocker 73 through the first ball screw 55 and the first sliding block guide rail 56, realizes the adjustment of the whole position of the swing grinding device 5 through the second ball screw 57 and the second sliding block guide rail 58, can effectively meet the grinding requirement of the outer ring with the peach-shaped groove, realizes the structural movement through stable mechanical transmission (namely a thread matching structure of the screw and the sliding block), has high precision and ensures the grinding quality. In addition, this device need not remove and waits to process the outer lane and can accomplish the grinding work to the channel when using, has improved work efficiency, guarantees to wait to process the outer lane and can not receive unnecessary damage.

As shown in fig. 8 or 9, for convenience of arrangement, the second crank 71 includes a rotating disc and a connecting point eccentrically arranged on the rotating disc, one end of the second connecting rod 72 is hinged with the connecting point, and the second motor 74 drives the rotating disc to rotate through a transmission belt 75. In other embodiments, the second crank 71 may also be a rod-shaped structure, one end of which is driven to rotate by a motor, and the other end of which is hinged with the second connecting rod 72, as shown in fig. 10.

In a preferred embodiment, with reference to fig. 3, the machine frame 1 is also provided with a robot 6 for transferring the outer ring to be processed between the first gripping device 2 and the second gripping device 3. The manipulator 6 is stable in work and good in accuracy, and the outer ring to be processed is grabbed between the first clamping device 2 and the second clamping device 3 to be picked and placed to ensure the working efficiency. In a further preferred scheme, a traveling frame 61 is arranged between the first clamping device 2 and the second clamping device 3, a movable block capable of moving along the traveling frame 61 through a driving mechanism is arranged on the traveling frame 61, and the manipulator 6 is arranged on the movable block to realize movement in a wider range, so that the use flexibility is improved. The movable block realizes the movement on the traveling frame 61 through a ball screw structure or through a hydraulic cylinder, and the manipulator 6 is of a conventional structure and can rotate, lift and realize the grabbing action.

In a preferred embodiment, referring to fig. 6 and 7, a first pressing cylinder 411 with a downward piston rod is arranged on the first oilstone frame 41, a through hole for placing oilstones is formed in the first oilstone frame 41, and the piston rod of the first pressing cylinder 411 can press the top surface of the oilstones from above.

The first pressure cylinder 411 may be an air cylinder or an oil cylinder, and preferably, an air cylinder is used to reduce the cost. This structure provides pressure from the top through first pressure cylinder 411, lets oilstone 200 contact all the time and treats that the processing outer lane grinds. Furthermore, the first oilstone frame 41 further comprises an elastic pressing piece 412, the oilstone 200 is pressed in the through hole by the elastic pressing piece 412 from the side surface, in addition, a convex pressing head 413 is arranged on the elastic pressing piece 412, the elastic pressing piece 412 is fixed on the side surface of the oilstone frame 41 through a connecting piece such as a bolt, the dotted line part in fig. 7 is the elastic movable range of the elastic pressing piece 412, the oilstone is pressed by the pressing head 413, the pressure is increased, and the pressing effect is ensured. The purpose of pressing the oilstone through the elastic pressing piece 412 in the structure is as follows: certain pretightening force is exerted on the oilstone from the side, but the oilstone 200 is not completely pressed and locked in the through hole, so that the oilstone 200 can move downwards under the pressure action of the first pressurizing cylinder 411 after being abraded, the grinding continuity is guaranteed, and manual adjustment is not needed. In other embodiments, a bolt or other structures can be used to tightly press the oilstone, and then manual adjustment can be performed. When the oil stone box is used and the oil stone is replaced, the through hole in the first oil stone frame 41 is abraded, so that the first oil stone frame 41 is prevented from being frequently replaced due to abrasion, and therefore the cost is reduced, referring to fig. 6 and 7, a detachable oil stone box 414 is arranged in the through hole of the oil stone frame 44, the oil stone 200 is inserted into the oil stone box 414, and the oil stone box 414 is simple in structure and can effectively reduce the cost.

Similarly, referring to fig. 6 and 7, the second oilstone frame 54 and the first oilstone frame 41 have the same structure, a second pressing cylinder 541 with a downward piston rod is arranged on the second oilstone frame 54, a through hole for placing the oilstone is formed in the second oilstone frame 54, the piston rod of the second pressing cylinder 541 can press the top surface of the oilstone from above, an elastic pressing piece 542 and an oilstone box 544 are also arranged on the second oilstone frame 54, and a pressing head 543 is also arranged on the elastic pressing piece 542.

In a preferred embodiment, referring to fig. 3, all the electrically controlled components on the first clamping device 2, the second clamping device 3, the linear grinding device 4 and the oscillating grinding device 5 are controlled by a controller 8. The controller 8 can be installed on the rack 1 or can be independently placed, signals are transmitted through cables and the like, the type and the size of the controller 8 do not have special requirements, and programs can be edited, signals can be received, and instructions can be sent.

When in use, the first clamping device 2 and the second clamping device 3 in the device are both electromagnetic centerless clamps; furthermore, a unipolar electromagnetic centerless clamp is preferably adopted, the unipolar electromagnetic centerless clamp comprises a workpiece driving part and a workpiece positioning part, the workpiece driving part provides power for the rotation of the workpiece through a belt by a servo motor, and controls the starting, stopping, speed changing and the like of a workpiece shaft; the workpiece positioning part adsorbs a workpiece through the magnetic coil, and the two supporting rods support the workpiece to rotate. The unipolar electromagnetic centerless clamp has the advantages of good rigidity, sufficient suction force and simple structure.

This device not only can be used for grinding the outer lane of treating that has peach type ditch, and to conventional arc channel, this device is equally suitable for, when using, adjusts the position of movable part 53 as required, lets rocker 73 at the swing of predetermined angle within range can. Moreover, since the regular arc-shaped groove is regular in shape, the position of the entire swing grinding apparatus 5 does not need to be adjusted, and the second roller screw 57 is locked.

To sum up, the utility model discloses axle is bearing inner race grinder can solve the axle that has peach type ditch and holds the outer race processing degree of difficulty big, problem that the quality is low, so, the utility model discloses thereby some actual problems effectively overcome among the prior art have very high value of utilization and use meaning.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. The present invention can be modified in many ways without departing from the spirit and scope of the present invention, and those skilled in the art can modify or change the embodiments described above without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a bearing inner race grinder which characterized in that: comprises a first clamping device (2), a second clamping device (3), a linear grinding device (4) and a swinging grinding device (5) which are arranged on a frame (1);

the linear grinding device (4) comprises a first oilstone frame (41) which moves in a reciprocating manner along a linear direction, and oilstones arranged on the first oilstone frame (41) can grind linear parts of the outer ring to be machined clamped on the first clamping device (2); the swing grinding device (5) comprises a fixed part (52) and a movable part (53) which are arranged on a base (51), a second oilstone frame (54) capable of swinging is arranged on the fixed part (52), and oilstones arranged on the second oilstone frame (54) can swing and grind a channel part of the outer ring to be machined, which is clamped on the second clamping device (3); the movable part (53) is arranged on the base (51) through a first ball screw (55) and a first slide block guide rail (56) and can move along the axial direction of the outer ring to be processed;

the crank rocker mechanism is characterized by further comprising a crank rocker mechanism, wherein a driving part of the crank rocker mechanism is installed on the movable part (53), and a driven part of the crank rocker mechanism is installed on the fixed part (52) and used for driving the second oilstone frame (54); the swing grinding device (5) is arranged on the frame (1) through a second ball screw (57) and a second slide block guide rail (58) and can move along the axial direction of an outer ring to be processed.

2. The grinding device for the outer ring of the shaft coupling bearing according to claim 1, wherein: and the frame is also provided with a manipulator (6) for transferring the outer ring to be processed between the first clamping device (2) and the second clamping device (3).

3. The grinding device for the outer ring of the shaft coupling bearing according to claim 2, wherein: a travelling frame (61) is arranged between the first clamping device (2) and the second clamping device (3), a movable block is arranged on the travelling frame (61), and the manipulator (6) is arranged on the movable block.

4. The grinding device for the outer ring of the shaft coupling bearing according to claim 1, wherein: the linear grinding device (4) comprises a crank-slider mechanism, the crank-slider mechanism comprises a first crank (42), a first connecting rod (43) and a slider (44), the first crank (42) is rotatably installed on the rack (1) through a first motor (45), two ends of the first connecting rod (43) are respectively hinged to the first crank (42) and the slider (44), and a first oilstone frame (41) is installed on the slider (44).

5. The grinding device for the outer ring of the shaft coupling bearing according to claim 1, wherein: the crank and rocker mechanism comprises a second crank (71), a second connecting rod (72) and a rocker (73), the crank (71) is rotatably mounted on the movable part (53) through a second motor (74), the rocker (73) is swingably mounted on the fixed part (52) and connected with the second oilstone frame (54), and two ends of the second connecting rod (72) are respectively hinged to the second crank (71) and the rocker (73).

6. The grinding device for the outer ring of the shaft coupling bearing according to claim 5, wherein: the second crank (71) comprises a rotary disc and a connecting point eccentrically arranged on the rotary disc, one end of the second connecting rod (72) is hinged with the connecting point, and the second motor (74) drives the rotary disc to rotate through a transmission belt (75).

7. The grinding device for the outer ring of the shaft coupling bearing according to claim 1, wherein: be equipped with piston rod first pressure cylinder (411) down on first oilstone frame (41), it has the through-hole of placing the oilstone to open on first oilstone frame (41), the piston rod of first pressure cylinder (411) can be followed the top and pressed at the oilstone top surface.

8. The grinding device for the outer ring of the shaft coupling bearing according to claim 1, wherein: and a second pressing cylinder (541) with a piston rod facing downwards is arranged on the second oilstone frame (54), a through hole for placing oilstones is formed in the second oilstone frame (54), and the piston rod of the second pressing cylinder (541) can be pressed on the top surface of the oilstones from the upper side.

9. The grinding device for the outer ring of the shaft coupling bearing according to claim 1, wherein: the first clamping device (2), the second clamping device (3), the linear grinding device (4) and the swing grinding device (5) are all controlled by a controller (8).

10. The grinding device for the outer ring of the shaft coupling bearing according to claim 1, wherein: the first clamping device (2) and the second clamping device (3) are both electromagnetic centerless clamps.