A bearing end face grinding process

Abstract

The present invention relates to the technical field of bearing processing, and particularly relates to a bearing end face grinding process. The bearing end face grinding process provided by the present invention is mainly completed in cooperation with a bearing end face grinding device. The bearing end face grinding device includes an upper grinding disc, a lower grinding disc, and an adjusting assembly. The adjusting assembly includes an outer rotating ring, a clamping star wheel, and an inner rotating ring. The outer rotating ring and the inner rotating ring are both rotatably arranged on the lower grinding disc, and the outer rotating ring and the inner rotating ring are coaxially arranged. The clamping star wheel is slidably arranged on the lower grinding disc, one end of the clamping star wheel meshes with the outer rotating ring, and the other end meshes with the inner rotating ring. The bearing end face grinding process provided by the present invention can prevent the protrusions of the upper grinding disc and the lower grinding disc from overlapping by adjusting the motion state of the bearing, enabling the device to operate normally and ensuring the grinding quality.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing processing, and particularly to a bearing end face grinding process. Background Art

[0002] Double-end face grinders are widely used in the field of machining, generally for precision machining. Double-end face grinders mainly use the end faces of the upper and lower grinding wheels to grind the upper and lower end faces of the workpiece simultaneously. Double-end face grinders can be divided into two types: horizontal and vertical according to their structures.

[0003] When a vertical double-end face grinder grinds the end face of a bearing, the linear velocities of each part of the upper grinding wheel disc are inconsistent, and the same is true for the lower grinding wheel disc. Since the grinding consumption of the grinding wheel is related to the speed, the upper and lower grinding wheel discs are prone to the situation of middle convexity, which has a greater impact on the grinding accuracy and grinding difficulty of the bearing. Moreover, the upper and lower grinding wheel discs rotate in opposite directions for grinding, and the bearing is easily driven by the two grinding wheels with opposite rotation directions and tilted in the positioning chuck, resulting in one side of the same face of the ground bearing end face being larger and the other side being smaller, causing the end face plane to be inclined to the outer circle face, forming a parallelogram, and the perpendicularity is poor. Summary of the Invention

[0004] Based on this, in view of the problems of low grinding accuracy and great grinding difficulty of bearings existing in current bearing processing, it is necessary to provide a bearing end face grinding process.

[0005] The above object is achieved by the following technical solutions:

[0006] A bearing end face grinding process is mainly completed in cooperation with a bearing end face grinding device. The bearing end face grinding device includes an upper grinding disc, a lower grinding disc, and an adjusting component. The adjusting component includes an outer rotating ring, a clamping star wheel, and an inner rotating ring. The bearing end face grinding process includes the following steps:

[0007] S1. First placement and fixation: Place the bearing on the lower grinding disc, and the bearing is clamped by the clamping star wheel.

[0008] S2. First grinding: The upper grinding disc drives the clamping star wheel to move through the inner rotating ring.

[0009] S3. Second placement and fixation: Place a new bearing on the lower grinding disc, and the new bearing is clamped by the clamping star wheel.

[0010] S4. Second grinding: The upper grinding disc drives the clamping star wheel to move through the outer rotating ring.

[0011] The outer rotating ring and the inner rotating ring are both rotatably arranged on the lower grinding disc, and the outer rotating ring and the inner rotating ring are coaxially arranged; the clamping star wheel is slidably arranged on the lower grinding disc, one end of the clamping star wheel meshes with the outer rotating ring, and the other end meshes with the inner rotating ring.

[0012] Further, the pressure of the upper grinding disc on the bearing is negatively correlated with the moving distance of the upper grinding disc.

[0013] Further, the lower grinding disc is provided with grinding fluid discharge holes for discharging grinding fluid; the spraying amount of the grinding fluid is positively correlated with the pressure of the upper grinding disc on the bearing.

[0014] Further, the lower grinding disc is provided with a clamping assembly; the outer rotating ring and the inner rotating ring are both provided with mating tooth columns; the clamping assembly has two working states. When in the first working state, the clamping assembly cooperates with the mating tooth column on the inner rotating ring; when in the second working state, the clamping assembly cooperates with the mating tooth column on the outer rotating ring.

[0015] Further, the clamping assembly includes a clamping key and an elastic member. One end of the elastic member is arranged on the lower grinding disc, and the other end is arranged on the clamping key; an inner ring and an outer ring that can slide up and down in the vertical direction are arranged on the upper grinding disc. An inner ring hole that cooperates with the mating tooth column on the inner rotating ring is arranged on the inner ring; an outer ring hole that cooperates with the mating tooth column on the outer rotating ring is arranged on the outer ring.

[0016] Further, the adjusting assembly further includes a driving member for providing a driving force for the movement of the inner ring and the outer ring.

[0017] Further, the clamping star wheel includes an outer star wheel and a middle star wheel. The middle star wheel is rotatably arranged in the middle of the outer star wheel; a first tooth that cooperates with the mating tooth column is arranged on the outer star wheel; a second tooth that cooperates with the mating tooth column is arranged on the middle star wheel; a first mounting hole is arranged on the outer star wheel, and a second mounting hole is arranged on the middle star wheel. Both the first mounting hole and the second mounting hole are used for placing the bearing.

[0018] Further, the number of both the first mounting hole and the second mounting hole is at least two groups.

[0019] Further, the number of the clamping star wheels is at least two groups.

[0020] The beneficial effects of the present invention are:

[0021] A bearing end face grinding process provided by the present invention is mainly completed in cooperation with a bearing end face grinding device. The bearing end face grinding device includes an upper grinding disc, a lower grinding disc and an adjusting assembly. The adjusting assembly includes an outer rotating ring, a clamping star wheel and an inner rotating ring. The outer rotating ring and the inner rotating ring are both rotatably arranged on the lower grinding disc, and the outer rotating ring and the inner rotating ring are coaxially arranged. The clamping star wheel is slidably arranged on the lower grinding disc, one end of the clamping star wheel meshes with the outer rotating ring, and the other end meshes with the inner rotating ring. In the bearing end face grinding process provided by the present invention, by adjusting the motion state of the bearing, the superposition of the convex parts of the upper grinding disc and the lower grinding disc is prevented, so that the device can operate normally and the grinding quality is guaranteed.

[0022] Further, by arranging the clamping star wheel, the bearing can be prevented from tilting, avoiding the situation that one side of the end face of the ground bearing is large and the other side is small, and ensuring the perpendicularity of the bearing.

[0023] Further, by adjusting the pressure of the upper grinding disc on the bearing from large to small, the end face of the bearing is first rapidly rough ground during the grinding process, and finally fine ground, ensuring the grinding efficiency while guaranteeing the machining quality of the bearing.

[0024] Further, by adjusting the pressure of the upper grinding disc on the bearing from large to small, the convex parts of the upper grinding disc and the lower grinding disc are rapidly ground flat at the beginning, reducing the influence of the unevenness of the grinding disc surface on the grinding quality in the final fine grinding stage. Description of the Drawings

[0025] Figure 1 It is a schematic three-dimensional structure diagram of a bearing end face grinding device provided by an embodiment of the present invention.

[0026] Figure 2 It is a schematic three-dimensional structure diagram of a bearing end face grinding device provided by an embodiment of the present invention after removing the upper grinding disc and the adjusting assembly.

[0027] Figure 3 It is a schematic three-dimensional structure diagram of the adjusting assembly of a bearing end face grinding device provided by an embodiment of the present invention.

[0028] Figure 4 It is a schematic three-dimensional structure diagram of the adjusting assembly of a bearing end face grinding device provided by an embodiment of the present invention after removing the clamping star wheel.

[0029] Figure 5 It is a schematic cross-sectional structure diagram of the adjusting assembly of a bearing end face grinding device provided by an embodiment of the present invention after removing the clamping star wheel.

[0030] Figure 6 For Figure 5 It is a partially enlarged schematic structure diagram at A of the adjusting assembly of the bearing end face grinding device shown after removing the clamping star wheel.

[0031] Figure 7 Schematic assembly structure diagram of the gear matching column, key and compression spring of the bearing end face grinding device provided by an embodiment of the present invention.

[0032] Figure 8 Exploded structure diagram of the outer star wheel and inner star wheel of the bearing end face grinding device provided by an embodiment of the present invention.

[0033] Figure 9 Schematic three-dimensional structure diagram of the upper grinding disc of the bearing end face grinding device provided by an embodiment of the present invention.

[0034] Figure 10 Schematic sectional structure diagram of the upper grinding disc of the bearing end face grinding device provided by an embodiment of the present invention.

[0035] Wherein:

[0036] 100, grinding machine; 110, rotating shaft;

[0037] 200, upper grinding disc; 201, upper inner ring groove; 202, upper outer ring groove; 210, inner ring; 211, inner ring hole; 220, outer ring; 221, outer ring hole; 230, hydraulic rod;

[0038] 300, adjusting assembly; 310, outer rotating ring; 311, first connection hole; 312, second connection hole; 320, key; 321, compression spring; 330, clamping star wheel; 331, outer star wheel; 3311, first tooth; 3312, first mounting hole; 332, inner star wheel; 3321, second tooth; 3322, second mounting hole; 340, inner rotating ring; 350, gear matching column;

[0039] 400, lower grinding disc; 401, lower inner ring groove; 4011, lower inner key hole; 402, lower outer ring groove; 4021, lower outer key hole; 403, grinding fluid discharge hole. Detailed implementation manners

[0040] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] The serial numbers assigned to the components in this text itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And the "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention.

[0042] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0043] When a vertical double-end face grinding machine grinds the end faces of bearings, the linear speeds of each part of the upper grinding wheel disc are inconsistent, and the same is true for the lower grinding wheel disc. Since the grinding consumption of the grinding wheel is related to the speed, both the upper grinding wheel disc and the lower grinding wheel disc are prone to the situation of middle convexity, which has a greater impact on the grinding accuracy, grinding difficulty, etc. of the bearings.

[0044] The bearing end face grinding process provided by the present invention adjusts the motion state of the bearing to prevent the convex parts of the upper grinding disc and the lower grinding disc from overlapping, enabling the device to operate normally and ensuring the grinding quality.

[0045] As Figures 1 to 10 shown, the bearing end face grinding process provided by an embodiment of the present invention is mainly completed in cooperation with a bearing end face grinding device. The bearing end face grinding device is used to grind the bearings; in this embodiment, the bearing end face grinding device includes a grinding machine 100, an upper grinding disc 200, an adjusting assembly 300, and a lower grinding disc 400. A rotating shaft 110 is provided on the grinding machine 100, and the upper grinding disc 200 is fixedly sleeved on the rotating shaft 110.

[0046] On the grinding machine 100, a lower grinding disc 400 is provided coaxially with the rotating shaft 110 and located directly below the rotating shaft 110.

[0047] An adjusting assembly 300 is provided on the lower grinding disc 400. The adjusting assembly 300 includes an outer rotating ring 310, a clamping star wheel 330, and an inner rotating ring 340. The outer rotating ring 310 and the inner rotating ring 340 are both rotatably provided on the lower grinding disc 400. The outer rotating ring 310 and the inner rotating ring 340 are coaxially arranged, and the axis of the outer rotating ring 310 coincides with the axis of the lower grinding disc 400. One end of the clamping star wheel 330 meshes with the outer rotating ring 310, and the other end meshes with the inner rotating ring 340. The clamping star wheel 330 is used to clamp the bearing. The outer rotating ring 310 and the inner rotating ring 340 drive the bearing to rotate through the clamping star wheel 330, so that the bearing can rotate while revolving, and then the bearing is ground.

[0048] The bearing end face grinding process includes the following steps:

[0049] S1. First placement and fixation: Place the bearing on the lower grinding disc 400, and the bearing is clamped by the clamping star wheel 330.

[0050] S2. First grinding: The upper grinding disc 200 drives the clamping star wheel 330 to move through the inner rotating ring 340.

[0051] S3. Second placement and fixation: Place a new bearing on the lower grinding disc 400, and the new bearing is clamped by the clamping star wheel 330.

[0052] S4. Second grinding: The upper grinding disc 200 drives the clamping star wheel 330 to move through the outer rotating ring 310.

[0053] During the use of the bearing end face grinding device, the bearing is clamped by the clamping star wheel 330, and then the upper grinding disc 200 drives the clamping star wheel 330 to rotate while revolving through the inner rotating ring 340 or the outer rotating ring 310. During the rotation, the upper grinding disc 200 and the lower grinding disc 400 cooperate to grind the end face of the bearing.

[0054] During the grinding process, the pressure of the upper grinding disc 200 on the bearing is negatively correlated with the moving distance of the upper grinding disc 200, so that the bearing end face is first quickly rough ground and finally precision ground during the grinding process, ensuring the grinding efficiency while ensuring the processing quality of the bearing.

[0055] The grinding fluid discharge hole 403 is provided on the lower grinding disc 400, and the grinding fluid discharge hole 403 is used to discharge the grinding fluid. During the grinding process, the spraying amount of the grinding fluid is positively correlated with the pressure of the upper grinding disc 200 on the bearing. When the pressure of the upper grinding disc 200 on the bearing is relatively large at the initial stage of grinding, the grinding amount is relatively large and the heat generation is relatively severe. By increasing the spraying amount of the grinding fluid, the grinding disc is quickly cooled to prevent the device from being damaged. When the pressure of the upper grinding disc 200 on the bearing is relatively small at the later stage of grinding, the grinding amount is relatively small and the heat generation amount is relatively low. By reducing the spraying amount of the grinding fluid, the loss of the grinding fluid is reduced.

[0056] The bearing end face grinding process provided by the present invention can prevent the protrusions of the upper grinding disc 200 and the lower grinding disc 400 from overlapping by adjusting the motion state of the bearing, enabling the device to operate normally and ensuring the grinding quality.

[0057] By setting the clamping star wheel 330, the bearing can be prevented from tilting, avoiding the situation where one side of the end face of the ground bearing is larger than the other side, and ensuring the perpendicularity of the bearing.

[0058] In some embodiments, a clamping component is provided on the lower grinding disc 400, and mating tooth columns 350 are provided on both the outer rotating ring 310 and the inner rotating ring 340. The mating tooth columns 350 are used to mesh with the clamping star wheel 330; a plurality of groups of first connection holes 311 and a plurality of groups of second connection holes 312 are evenly arranged on the end faces of the outer rotating ring 310 and the inner rotating ring 340. The first connection holes 311 and the second connection holes 312 are communicated, and the diameter of the first connection holes 311 is larger than that of the second connection holes 312; the number of the mating tooth columns 350 is a plurality of groups, and the mating tooth columns 350 can be sleeved in the first connection holes 311 and slide up and down in the vertical direction.

[0059] The clamping component has two working states. When the clamping component is in the first working state, the mating tooth columns 350 on the inner rotating ring 340 are located in the second connection holes 312 on the inner rotating ring 340, enabling the inner rotating ring 340 to rotate relative to the lower grinding disc 400, so that the upper grinding disc 200 can drive the clamping star wheel 330 to rotate and revolve while rotating, and then grind the bearing; when the clamping component is in the second working state, the mating tooth columns 350 on the outer rotating ring 310 are located in the second connection holes 312 on the outer rotating ring 310, enabling the outer rotating ring 310 to rotate relative to the lower grinding disc 400, so that the upper grinding disc 200 can drive the clamping star wheel 330 to rotate and revolve while rotating, and then grind the bearing.

[0060] It can be understood that the engaging assembly includes hydraulic columns. In the initial state, the hydraulic columns are all located in the second connection holes 312 on the inner rotating ring 340 and the second connection holes 312 on the outer rotating ring 310, so that neither the outer rotating ring 310 nor the inner rotating ring 340 can rotate relative to the lower grinding disc 400. When the hydraulic columns are in the first working state, the hydraulic columns directly below the mating tooth columns 350 on the inner rotating ring 340 all retract, so that the mating tooth columns 350 on the inner rotating ring 340 are located in the second connection holes 312 on the inner rotating ring 340, enabling the inner rotating ring 340 to rotate relative to the lower grinding disc 400, enabling the upper grinding disc 200 to drive the clamping star wheel 330 to rotate and revolve while rotating, thereby grinding the bearing. When the hydraulic columns are in the second working state, the hydraulic columns directly below the mating tooth columns 350 on the outer rotating ring 310 all retract, so that the mating tooth columns 350 on the outer rotating ring 310 are located in the second connection holes 312 on the outer rotating ring 310, enabling the outer rotating ring 310 to rotate relative to the lower grinding disc 400, enabling the upper grinding disc 200 to drive the clamping star wheel 330 to rotate and revolve while rotating, thereby grinding the bearing.

[0061] In some embodiments, the engaging assembly includes a key 320 and an elastic member. The key 320 and the elastic member are both provided on the lower grinding disc 400. In this embodiment, the elastic member is a compression spring 321. The key 320 is connected to the lower grinding disc 400 through the compression spring 321. One end of the compression spring 321 is fixedly connected to the lower grinding disc 400, and the other end is fixedly connected to the key 320.

[0062] The lower grinding disc 400 is provided with a lower inner ring groove 401 and a lower outer ring groove 402. The axis of the lower inner ring groove 401 coincides with the axis of the lower grinding disc 400, and the axis of the lower outer ring groove 402 coincides with the axis of the lower grinding disc 400. A plurality of groups of lower inner key holes 4011 are evenly provided on the lower inner ring groove 401. A plurality of groups of lower outer key holes 4021 are evenly provided on the lower outer ring groove 402. The diameters and depths of the lower inner key holes 4011 and the lower outer key holes 4021 are the same. The key 320 and the compression spring 321 are both provided in the lower inner key holes 4011 and the lower outer key holes 4021. One end of the key 320 abuts against the lower surface of the mating tooth column 350.

[0063] Both the inner ring 210 and the outer ring 220 are arranged on the upper grinding disc 200 so as to be able to slide up and down in the vertical direction. The inner ring 210 and the outer ring 220 are coaxially arranged. A plurality of groups of inner ring holes 211 are evenly provided on the end surface of the inner ring 210, and the mating tooth columns 350 on the inner rotating ring 340 can cooperate with the inner ring holes 211. A plurality of groups of outer ring holes 221 are evenly provided on the end surface of the outer ring 220, and the mating tooth columns 350 on the outer rotating ring 310 can cooperate with the outer ring holes 221. The inner ring 210 is used to provide the driving force for the movement of the mating tooth columns 350 on the inner rotating ring 340. The outer ring 220 is used to provide the driving force for the movement of the mating tooth columns 350 on the outer rotating ring 310.

[0064] The upper grinding disc 200 drives the inner ring 210 to move downward, so that the inner ring hole 211 on the inner ring 210 cooperates with the mating tooth column 350 on the inner rotating ring 340, so that the mating tooth column 350 on the inner rotating ring 340 is located in the second connection hole 312 on the inner rotating ring 340, so that the key 320 and the compression spring 321 directly below the mating tooth column 350 on the inner rotating ring 340 are in the first working state, so that the inner rotating ring 340 can rotate relative to the lower grinding disc 400, so that the upper grinding disc 200 can drive the clamping star wheel 330 to rotate and revolve around its own axis through the inner rotating ring 340, and then grind the bearing; the upper grinding disc 200 drives the outer ring 220 to move downward, so that the outer ring hole 221 on the outer ring 220 cooperates with the mating tooth column 350 on the outer rotating ring 310, so that the mating tooth column 350 on the outer rotating ring 310 is located in the second connection hole 312 on the outer rotating ring 310, so that the key 320 and the compression spring 321 directly below the mating tooth column 350 on the outer rotating ring 310 are in the second working state, so that the outer rotating ring 310 can rotate relative to the lower grinding disc 400, so that the upper grinding disc 200 can drive the clamping star wheel 330 to rotate and revolve around its own axis through the outer rotating ring 310, and then grind the bearing.

[0065] In some embodiments, the adjusting assembly 300 further includes a driving member for providing the driving force for the movement of the inner ring 210 and the outer ring 220. In this embodiment, the driving member is a hydraulic rod 230; the upper grinding disc 200 is provided with an upper inner ring groove 201 and an upper outer ring groove 202, the axis of the upper inner ring groove 201 coincides with the axis of the upper grinding disc 200, and the axis of the upper outer ring groove 202 coincides with the axis of the upper grinding disc 200.

[0066] Hydraulic rods 230 are arranged in both the upper inner ring groove 201 and the upper outer ring groove 202. One end of the hydraulic rod 230 in the upper inner ring groove 201 is arranged on the upper grinding disc 200, and the other end is arranged on the inner ring 210. The hydraulic rod 230 in the upper inner ring groove 201 is used to provide the driving force for the movement of the inner ring 210; one end of the hydraulic rod 230 in the upper outer ring groove 202 is arranged on the upper grinding disc 200, and the other end is arranged on the outer ring 220. The hydraulic rod 230 in the upper outer ring groove 202 is used to provide the driving force for the movement of the outer ring 220.

[0067] When the hydraulic rod 230 in the upper inner ring groove 201 drives the inner ring 210 to extend, the inner ring hole 211 on the inner ring 210 can cooperate with the mating tooth column 350 on the inner rotating ring 340; when the hydraulic rod 230 in the upper outer ring groove 202 drives the outer ring 220 to extend, the outer ring hole 221 on the outer ring 220 can cooperate with the mating tooth column 350 on the outer rotating ring 310.

[0068] In some embodiments, the clamping star wheel 330 includes an outer star wheel 331 and a middle star wheel 332. The outer star wheel 331 and the middle star wheel 332 have the same size. The outer star wheel 331 has two upper and lower layers, which are connected by connecting columns. The axis of the outer star wheel 331 coincides with the axis of the middle star wheel 332. The middle star wheel 332 is rotatably sleeved on the connecting columns of the outer star wheel 331. A plurality of groups of first teeth 3311 and first mounting holes 3312 are uniformly arranged on the outer star wheel 331. A plurality of groups of second teeth 3321 and second mounting holes 3322 are uniformly arranged on the middle star wheel 332. The shapes and numbers of the first teeth 3311 and the second teeth 3321 are the same. Both the first teeth 3311 and the second teeth 3321 can cooperate with the mating tooth column 350. The diameters of the first mounting holes 3312 and the second mounting holes 3322 are the same. The first mounting holes 3312 and the second mounting holes 3322 are used to place bearings. The outer star wheel 331 and the middle star wheel 332 are used to clamp the bearings.

[0069] The dredging rod is used to align the first mounting holes 3312 and the second mounting holes 3322. The diameter of the dredging rod is the same as the diameter of the first mounting holes 3312.

[0070] Along the axial direction of the mating tooth column 350, from top to bottom, the mating tooth column 350 has a large diameter end and a small diameter end.

[0071] The first mounting holes 3312 on the outer star wheel 331 and the second mounting holes 3322 on the middle star wheel 332 are aligned by the dredging rod. At this time, the first teeth 3311 on the outer star wheel 331 and the second teeth 3321 on the middle star wheel 332 are misaligned in the circumferential direction and the misalignment is very small. When the mating tooth column 350 moves downward, the contact surface between the mating tooth column 350 and the clamping star wheel 330 switches from the small diameter end to the large diameter end. The mating tooth column 350 aligns the first teeth 3311 on the outer star wheel 331 and the second teeth 3321 on the middle star wheel 332, causing the first mounting holes 3312 on the outer star wheel 331 and the second mounting holes 3322 on the middle star wheel 332 to be misaligned in the circumferential direction, thereby clamping the bearing.

[0072] In some embodiments, the number of the first mounting holes 3312 and the second mounting holes 3322 is at least two groups; both the first mounting holes 3312 and the second mounting holes 3322 are used to place bearings.

[0073] In this embodiment, the number of both the first mounting holes 3312 and the second mounting holes 3322 is five groups. For the same group of clamping star wheels 330, five bearings can be loaded at a time, thereby improving the grinding efficiency of the bearings.

[0074] In some embodiments, the number of the clamping star wheels 330 is at least two groups.

[0075] In this embodiment, the number of clamping star wheels 330 is five groups, so that the number of bearings that the clamping star wheels 330 can clamp increases, thereby improving the grinding efficiency of the bearings.

[0076] Combined with the above embodiments, the working principle and process of the embodiments of the present invention are as follows:

[0077] Initially, under the action of the compression spring 321, the clamping key 320 is engaged into the second connection hole 312 and abuts against the lower surface of the mating tooth column 350, so that neither the outer rotating ring 310 nor the inner rotating ring 340 can rotate relative to the lower grinding disc 400.

[0078] Before grinding, place the bearing at the first mounting hole 3312 and make the lower end face of the bearing abut against the lower grinding disc 400; as Figure 10 shown, the control center controls the hydraulic rod 230 in the upper inner ring groove 201 to extend, so that the lower end face of the inner ring 210 is aligned with the lower end face of the upper grinding disc 200, and the control center controls the hydraulic rod 230 in the upper outer ring groove 202 to retract, so that the outer ring 220 retracts.

[0079] The grinding machine 100 controls the upper grinding disc 200 to move down to a preset position. At this time, the inner ring hole 211 on the inner ring 210 cooperates with the mating tooth column 350 on the inner rotating ring 340. On the one hand, the clamping key 320 is completely disengaged from the second connection hole 312 on the inner rotating ring 340; on the other hand, the first tooth 3311 on the outer star wheel 331 is aligned with the second tooth 3321 on the middle star wheel 332, and the first mounting hole 3312 on the outer star wheel 331 is misaligned with the second mounting hole 3322 on the middle star wheel 332, thereby clamping the bearing.

[0080] The grinding machine 100 drives the upper grinding disc 200 to rotate counterclockwise through the rotating shaft 110. The upper grinding disc 200 drives the inner rotating ring 340 to rotate counterclockwise through the cooperation of the inner ring hole 211 and the mating tooth column 350. The cooperation between the inner rotating ring 340 and the outer rotating ring 310 enables the clamping star wheel 330 to revolve counterclockwise around the inner rotating ring 340 while rotating clockwise; during the grinding process, the upper grinding disc 200 applies a set pressure F to the upper end face of the bearing, and as the current round of grinding progresses, that is, as the upper grinding disc 200 moves down, the pressure F applied by the upper grinding disc 200 to the upper end face of the bearing gradually decreases and becomes 0 when reaching the required grinding position of the bearing. At the same time, the discharge amount of the grinding fluid from the grinding fluid discharge hole 403 changes synchronously with the pressure F applied by the upper grinding disc 200 to the upper end face of the bearing.

[0081] During the grinding process, the upper grinding disc 200 drives the clamping star wheel 330 to rotate and revolve through the inner rotating ring 340; along the radial direction of the inner rotating ring 340 from inside to outside, for the same bearing, the linear velocity of the bearing end face increases from small to large, so that the upper grinding disc 200 and the lower grinding disc 400 form a middle convex.

[0082] After this round of grinding is completed, the grinding machine 100 controls the upper grinding disc 200 to move upward, takes out the ground bearing, places a new bearing at the first mounting hole 3312, and makes the lower end surface of the new bearing abut against the lower grinding disc 400; the control center controls the hydraulic rod 230 in the upper inner ring groove 201 to retract, so that the inner ring 210 retracts, and the control center controls the hydraulic rod 230 in the upper outer ring groove 202 to extend, so that the lower end surface of the outer ring 220 is aligned with the lower end surface of the upper grinding disc 200.

[0083] The grinding machine 100 controls the upper grinding disc 200 to move downward to a preset position. At this time, the outer ring hole 221 on the outer ring 220 cooperates with the mating tooth column 350 on the outer rotating ring 310. On the one hand, it makes the key 320 completely disengage from the second connection hole 312 on the outer rotating ring 310; on the other hand, it aligns the first tooth 3311 on the outer star wheel 331 with the second tooth 3321 on the middle star wheel 332, and misaligns the first mounting hole 3312 on the outer star wheel 331 and the second mounting hole 3322 on the middle star wheel 332, thereby clamping the new bearing.

[0084] The grinding machine 100 drives the upper grinding disc 200 to rotate counterclockwise through the rotating shaft 110. The upper grinding disc 200 drives the outer rotating ring 310 to rotate counterclockwise through the cooperation of the outer ring hole 221 and the mating tooth column 350. The inner rotating ring 340 and the outer rotating ring 310 cooperate to make the clamping star wheel 330 rotate counterclockwise around the inner rotating ring 340 while rotating counterclockwise around its own axis; during the grinding process, the upper grinding disc 200 applies a set pressure F to the upper end surface of the bearing, and as this round of grinding progresses, that is, as the upper grinding disc 200 moves downward, the pressure F applied by the upper grinding disc 200 to the upper end surface of the bearing gradually decreases and becomes 0 when reaching the required grinding position of the bearing. At the same time, the discharge amount of the grinding fluid from the grinding fluid discharge hole 403 changes synchronously with the pressure F applied by the upper grinding disc 200 to the upper end surface of the bearing.

[0085] During the grinding process, the upper grinding disc 200 drives the clamping star wheel 330 to rotate around its own axis and revolve around the inner rotating ring 340 through the outer rotating ring 310; along the radial direction of the outer rotating ring 310 from outside to inside, for the same bearing, the linear velocity of the bearing end surface increases from small to large, making the upper grinding disc 200 and the lower grinding disc 400 form a concave middle.

[0086] The bearing end face grinding device alternately drives the clamping star wheel 330 to rotate around its own axis and revolve around the inner rotating ring 340 or the outer rotating ring 310; making the upper grinding disc 200 and the lower grinding disc 400 alternately show a convex middle and a concave middle, so that the convex middle and concave middle on the upper grinding disc 200 or the convex middle and concave middle on the lower grinding disc 400 can cancel each other out, enabling the upper grinding disc 200 or the lower grinding disc 400 to always grind the bearing with a better flatness, thereby ensuring the processing quality of the product.

[0087] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0088] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be subject to the appended claims.

Claims

1. A bearing end face grinding process, characterized in that, It is completed by a bearing end face grinding device. The bearing end face grinding device includes an upper grinding disc, a lower grinding disc and an adjusting component. The adjusting component includes an outer rotating ring, a clamping star wheel and an inner rotating ring. Tooth matching columns are arranged on both the outer rotating ring and the inner rotating ring. The tooth matching columns are used to mesh with the clamping star wheel. Multiple groups of first connection holes and multiple groups of second connection holes are evenly arranged on the end faces of the outer rotating ring and the inner rotating ring. The first connection holes and the second connection holes are communicated. The diameter of the first connection holes is larger than that of the second connection holes. There are multiple groups of tooth matching columns, and the tooth matching columns can be sleeved in the first connection holes and slide up and down in the vertical direction. A clamping component is arranged on the lower grinding disc. The clamping component includes a clamping key and an elastic member. One end of the elastic member is arranged on the lower grinding disc, and the other end is arranged on the clamping key. One end of the clamping key abuts against the lower surface of the tooth matching column. The clamping component has two working states. When in the first working state, the tooth matching columns on the inner rotating ring are located in the second connection holes on the inner rotating ring, so that the inner rotating ring can rotate relative to the lower grinding disc. When in the second working state, the tooth matching columns on the outer rotating ring are located in the second connection holes on the outer rotating ring, so that the outer rotating ring can rotate relative to the lower grinding disc. An inner ring and an outer ring are arranged on the upper grinding disc so as to be able to slide up and down in the vertical direction. Inner ring holes that cooperate with the tooth matching columns on the inner rotating ring are arranged on the inner ring. Outer ring holes that cooperate with the tooth matching columns on the outer rotating ring are arranged on the outer ring. The bearing end face grinding process includes the following steps: S1. First placement and fixation: Place the bearing on the lower grinding disc, and the bearing is clamped by the clamping star wheel. S2. First grinding: The upper grinding disc drives the clamping star wheel to move through the inner rotating ring. S3. Second placement and fixation: Place a new bearing on the lower grinding disc, and the new bearing is clamped by the clamping star wheel. S4. Second grinding: The upper grinding disc drives the clamping star wheel to move through the outer rotating ring. Both the outer rotating ring and the inner rotating ring are rotatably arranged on the lower grinding disc, and the outer rotating ring and the inner rotating ring are coaxially arranged. The clamping star wheel is slidably arranged on the lower grinding disc. One end of the clamping star wheel meshes with the outer rotating ring, and the other end meshes with the inner rotating ring.

2. The bearing end face grinding process according to claim 1, characterized in that The pressure of the upper grinding disc on the bearing is negatively correlated with the moving distance of the upper grinding disc.

3. The bearing end face grinding process according to claim 1, characterized in that, Grinding fluid discharge holes are arranged on the lower grinding disc, and the grinding fluid discharge holes are used to discharge grinding fluid. The spraying amount of the grinding fluid is positively correlated with the pressure of the upper grinding disc on the bearing.

4. The bearing end face grinding process according to claim 1, characterized in that, The adjusting component further includes a driving member, and the driving member is used to provide the driving force for the movement of the inner ring and the outer ring.

5. The bearing end face grinding process according to claim 1, characterized in that, The clamping star wheel includes an outer star wheel and a middle star wheel. The middle star wheel is rotatably arranged in the middle of the outer star wheel. First teeth that cooperate with the tooth matching columns are arranged on the outer star wheel. Second teeth that cooperate with the tooth matching columns are arranged on the middle star wheel. First mounting holes are arranged on the outer star wheel, and second mounting holes are arranged on the middle star wheel. Both the first mounting holes and the second mounting holes are used to place the bearing.

6. The bearing end face grinding process according to claim 5, characterized in that The number of both the first mounting holes and the second mounting holes is at least two groups.

7. The bearing end face grinding process according to claim 1, characterized in that, The number of the clamping star wheels is at least two groups.

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