Bearing inner ring processing equipment and processing technology

Abstract

The application relates to the field of bearing machining, and discloses a bearing inner ring machining device and a machining process. The bearing inner ring machining device comprises an inner diameter grinding module and a groove grinding module. The inner diameter grinding module comprises a first clamping assembly, an outer support assembly and an inner grinding unit, and the first clamping assembly comprises a first magnetic pole and a first rotary driving unit. The groove grinding module comprises a second clamping assembly, a movable support assembly and an outer grinding unit, and the second clamping assembly comprises a second magnetic pole and a second rotary driving unit. The outer grinding unit is located on one side of the second clamping interval. The movable support assembly comprises a support seat and a feeding driving unit. At least two inner support pieces are arranged on the support seat, and the inner support pieces are arranged opposite to the second magnetic pole. The bearing inner ring machining device can avoid the overall extrusion deformation of the bearing inner ring in the grinding process by reasonably arranging the support assembly, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of bearing machining, in particular to a bearing inner ring machining device and machining process. BACKGROUND

[0002] Bearing is a commonly used part in mechanical equipment, and the main function is to support the rotating body of the machine, reduce the friction coefficient in the movement process, and ensure the rotation accuracy. The machining precision of bearing products is generally high, and the most critical precision parameters are the inner diameter of the inner ring, the outer diameter of the outer ring and the groove precision, including size precision and shape and position precision. The bearing ring is usually machined by grinding and clamped with an electromagnetic centerless clamp.

[0003] The electromagnetic centerless clamp usually comprises a magnetic pole and a rotary driving member, the rotary driving member drives the magnetic pole to rotate, and a support member is arranged on one side of the magnetic pole. During machining, the bearing ring is fixed on the magnetic pole in a magnetic attraction manner, the support member contacts and positions the outer circumferential surface of the bearing ring, and then grinding machining is performed.

[0004] Since the support member positions the outer circumferential surface of the bearing ring, the grinding machining unit and the support member can only be arranged relatively when the outer circumferential surface of the bearing ring is ground, and the bearing ring is prone to extrusion deformation during machining. Especially for some bearing types with thin wall thickness, such as flexible bearings and robot bearings, not only the wall thickness of the ring is thin, but also the requirement for precision is higher, and the conventional electromagnetic centerless clamp clamping machining has the problems of easy deformation of the ring and insufficient shape precision.

[0005] The present application is aimed at the shortcomings of the existing ring machining method, and provides a device for grinding machining of a bearing inner ring. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a bearing inner ring machining device and machining process, which avoids the overall extrusion deformation of the bearing inner ring during grinding machining by reasonably arranging the support assembly, and improves the product quality.

[0007] In order to solve the above technical problems, the technical scheme provided by the present application is as follows: a bearing inner ring machining device, at least comprising:

[0008] The inner diameter grinding module comprises a first clamping assembly, an outer support assembly and an inner grinding unit, the first clamping assembly comprises a first magnetic pole and a first rotary driving unit, the first rotary driving unit drives the first magnetic pole to rotate, and the front end of the first magnetic pole forms a first clamping interval; the outer support assembly is located outside the first clamping interval, and the inner grinding unit is arranged opposite to the first magnetic pole;

[0009] The channel grinding module comprises a second clamping assembly, a movable support assembly and an outer grinding unit, the second clamping assembly comprises a second magnetic pole and a second rotary drive unit, the second rotary drive unit drives the second magnetic pole to rotate, and the front end of the second magnetic pole forms a second clamping interval; the outer grinding unit is located on one side of the second clamping interval.

[0010] The movable support assembly comprises a support seat and a feeding drive unit, at least two inner support members are arranged on the support seat, and the inner support members are arranged opposite to the second magnetic pole; and the feeding drive unit is used for driving the support seat to move relative to the second clamping interval.

[0011] The inner diameter grinding module is used for grinding the inner circumferential surface of the bearing inner ring. During grinding, the outer support assembly and the inner grinding unit can be selectively arranged opposite to the wall thickness of the bearing inner ring. The load during grinding is completely borne by the wall thickness of the bearing inner ring, thereby reducing the overall deformation.

[0012] The channel grinding module is used for grinding the channel of the bearing inner ring. During grinding, the movable support assembly and the outer grinding unit can be selectively arranged opposite to the wall thickness of the bearing inner ring. The load during grinding is completely borne by the wall thickness of the bearing inner ring, thereby reducing the overall deformation.

[0013] In similar processing scenarios, the common support form is external support, and the setting of the inner support form is relatively complex. In order to feed and discharge the bearing ring, the external support form needs to be set to be movable, which has requirements for the structure and setting form of the inner support.

[0014] The present application avoids the overall extrusion deformation of the bearing inner ring during grinding processing by reasonably setting the inner support form, thereby improving the product quality.

[0015] Preferably, the inner support member comprises a spherical support unit made of ceramic material.

[0016] In order to ensure sufficient contact between the inner support member and the bearing inner ring, the inner support member will lift part of the bearing inner ring during feeding, and will always be in contact with the bearing inner ring during subsequent processing. The spherical shape can guide the feeding of the inner support member.

[0017] Preferably, the movable support assembly further comprises an adjusting seat, and the support seat is connected with the adjusting seat through a linear bearing.

[0018] The stability of the movement of the support seat and the inner support member can be ensured, thereby improving the feeding accuracy of the inner support member.

[0019] As preferred, the end face grinding module further comprises a material guiding assembly and two end face grinding units, the two end face grinding units are coaxially arranged and form an end face grinding interval between the two end face grinding units.

[0020] The material guiding assembly comprises an upper guide plate, a lower guide plate and a material guiding driving unit, the upper guide plate and the lower guide plate are arranged in parallel and form a material guiding channel between the upper guide plate and the lower guide plate, the material guiding channel passes through the end face grinding interval, and the material guiding driving unit is used to drive the bearing inner ring to move along the material guiding channel.

[0021] During the machining, the distance between the two end face grinding units is adjusted, the two end face grinding units rotate, the axial dimension of the bearing inner ring is slightly larger than the thickness of the material guiding cylinder, that is, the two ends of the bearing partially extend out of the material guiding assembly. Under the driving of the material guiding driving unit, the bearing inner ring sequentially passes through the end face grinding interval along the material guiding channel, and the two end face grinding units grind the two end faces of the bearing inner ring.

[0022] The bearing inner ring grinding device has the advantages of simple structure, high automation degree and high machining efficiency.

[0023] As preferred, the bearing inner ring grinding device further comprises an outer diameter grinding module, the outer diameter grinding module comprises a guide wheel, a third clamping assembly and an outer diameter grinding unit, the third clamping assembly comprises a third magnetic pole and a third rotary driving unit, the third rotary driving unit drives the third magnetic pole to rotate, the front end of the third magnetic pole forms a third clamping interval, and the guide wheel and the outer diameter grinding unit are oppositely arranged relative to the third clamping interval.

[0024] The outer circumferential surface of the bearing inner ring is ground based on the end face, the cylindricity of the outer circumferential surface of the bearing inner ring is improved, and the rotation accuracy of the bearing during operation can be improved to a certain extent. At the same time, the outer circumferential surface of the bearing inner ring can also be used as a machining reference in subsequent machining, for example, in the inner circumferential surface grinding process, to create a basis for subsequent machining operations.

[0025] As preferred, the bearing inner ring grinding device further comprises a groove lapping module, the groove lapping module comprises a lapping driving assembly and a centering clamping assembly, the lapping driving assembly comprises a clamping base and a fourth driving unit, the fourth driving unit is used to drive the clamping base to rotate, and the front end of the clamping base forms a fourth clamping interval.

[0026] The centering clamping assembly comprises a centering shaft, the centering shaft is oppositely arranged relative to the clamping base, and the center of the centering shaft coincides with the rotation center of the clamping base; the centering shaft comprises a centering segment and a pressing segment, the centering segment is arranged towards the fourth clamping interval; at least two centering support blocks are arranged on the centering segment, the centering support blocks are located on the outer circumferential surface of the centering segment and are distributed in the circumferential direction; and a pressing bearing is sleeved on the pressing segment.

[0027] In the lapping process, one end face of the bearing inner ring abuts against the clamping base, and the other end face is pressed against by the pressing shaft. The centering segment and the centering support block are located in the bearing inner ring to support the bearing inner ring, and the clamping of the bearing inner ring is completed. Finally, the clamping base drives the bearing inner ring to rotate, and the oil stone is used to lap the groove.

[0028] The groove lapping module is used to lap the groove after the groove is ground, and further improves the accuracy of the groove.

[0029] As preferred, the groove grinding module further comprises an automatic feeding device, the automatic feeding device comprises a feeding assembly, a feeding operation assembly and an auxiliary support assembly; the feeding assembly comprises a feeding channel, and the discharge port of the feeding channel is downwardly arranged;

[0030] The feeding operation assembly comprises a feeding driving unit and a push-pull piece, the push-pull piece comprises a support plate, one side of the support plate is provided with an upper limiting block and a lower limiting block, and a containing interval is formed between the support plate, the upper limiting block and the lower limiting block; the containing interval is provided with an inlet and a discharge port, and a support operation channel is formed in the support plate;

[0031] The push-pull piece is arranged obliquely relative to the vertical direction, and the push-pull piece has at least three position states: in the first position state, the containing interval is aligned with the second clamping interval; in the second position state, the inlet of the containing interval is aligned with the discharge port of the feeding channel; and the third position state is a discharge state;

[0032] When the push-pull piece is in the first position state, the second position state and switches between the first position state and the second position state, the auxiliary support assembly corresponds to the discharge port of the containing interval, and the auxiliary support assembly is used to prevent the bearing inner ring from being discharged from the discharge channel; when the push-pull piece is in the third position state, the auxiliary support assembly is misaligned with the discharge port of the containing interval; and the feeding driving unit is used to drive the push-pull piece to move between the first position state, the second position state and the third position state.

[0033] When there is no bearing inner ring in the containing interval and the push-pull piece is in the second position state, the bearing inner ring in the feeding channel enters the containing interval from the inlet, and the size of the containing interval can ensure that only one bearing inner ring enters at a time.

[0034] Then the push-pull piece enters the first position state from the second position state. During the process of shifting position and after entering the first position state, the auxiliary support assembly corresponds to the discharging port of the accommodation interval, preventing the bearing inner ring from being discharged from the discharging port. After entering the first position state, the bearing inner ring is located in the second clamping interval and aligned with the second magnetic pole. Then the movable support assembly works, the inner support piece passes through the support operation channel and enters the bearing inner ring, completing the clamping and positioning operation of the bearing inner ring.

[0035] When the bearing inner ring completes the groove grinding process in the first position state, the auxiliary support assembly exits, the push-pull piece moves reversely through the second position state, and finally reaches the third position state. When the push-pull piece passes through the second position state, the bearing inner ring in the accommodation interval cannot enter the feeding channel. When the push-pull piece enters the third position state, the auxiliary support assembly is misaligned with the discharging port of the accommodation interval, the bearing inner ring in the accommodation interval is discharged from the discharging port, and the single processing operation of the bearing inner ring is completed. Finally, the push-pull piece is reset to the second position state to prepare for the next processing operation.

[0036] The automatic feeding device can automatically complete the feeding and discharging operations of the bearing inner ring during the groove grinding process, and has the advantages of stable operation and high automation degree.

[0037] Preferably, the auxiliary support assembly comprises a receiving support unit and a processing support unit. The receiving support unit comprises a lower stopper located below the discharging port of the feeding channel. The area between the lower stopper and the discharging port of the feeding channel forms a push-pull channel extending to the second clamping interval along the movement direction of the push-pull piece. The processing support unit is located below the second clamping interval.

[0038] The receiving support unit is used to close the discharging port in the second position state and between the first position and the second position, avoiding the falling of the bearing inner ring. The processing support unit is used to pre-support and position the bearing inner ring when the push-pull piece enters the first position state. When the inner support piece is in place, the bearing inner ring is separated from the processing support unit.

[0039] A bearing inner ring processing technology, at least comprising the following steps:

[0040] S1. Grinding end face: grinding the two end faces of the bearing inner ring;

[0041] S2. Grinding inner peripheral surface: using the inner diameter grinding module in the bearing inner ring processing equipment as described above to grind the inner side surface of the bearing inner ring;

[0042] In the process, one end face of the bearing inner ring is in contact with the first magnetic pole, the outer support assembly is in contact with the outer peripheral surface of the bearing inner ring, and the inner grinding unit grinds the inner peripheral surface of the bearing inner ring.

[0043] S3. Grinding the groove: using the groove grinding module in the bearing inner ring processing equipment as described above, grinding the groove of the bearing inner ring;

[0044] Wherein, one of the end faces of the bearing inner ring is in contact with the second magnetic pole, the movable support assembly moves towards the second clamping interval; the inner support piece is inserted into the bearing inner ring and in contact with the inner circumferential surface of the bearing inner ring; the outer grinding unit grinds the groove of the bearing inner ring.

[0045] As preferred, between S1 and S2, step S10 is further included,

[0046] S10. Grinding the outer circumferential surface: taking one of the end faces of the bearing inner ring as the reference, grinding the outer circumferential surface of the bearing inner ring;

[0047] In S2, taking the outer circumferential surface of the bearing inner ring as the reference, grinding the inner circumferential surface of the bearing inner ring;

[0048] Further comprising the following steps:

[0049] S4. Lapping the groove: taking the inner circumferential surface as the reference, lapping the groove. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 It is a structural schematic diagram of the end face grinding module in the bearing inner ring processing equipment of the present embodiment;

[0051] Figure 2 It is a top view of the end face grinding module in the bearing inner ring processing equipment of the present embodiment;

[0052] Figure 3 It is a structural schematic diagram of the outer diameter grinding module in the bearing inner ring processing equipment of the present embodiment;

[0053] Figure 4 It is a sectional view of the inner diameter grinding module in the bearing inner ring processing equipment of the present embodiment;

[0054] Figure 5 It is a front view of the inner diameter grinding module in the bearing inner ring processing equipment of the present embodiment;

[0055] Figure 6 It is a structural schematic diagram of the groove grinding module in the bearing inner ring processing equipment of the present embodiment; at this time, the movable support assembly is in the state of being away from the second magnetic pole;

[0056] Figure 7 It is a structural schematic diagram of the groove grinding module in the bearing inner ring processing equipment of the present embodiment; at this time, the movable support assembly is in the state of being close to the second magnetic pole;

[0057] Figure 8Front view of groove grinding module in bearing inner ring processing equipment of the embodiment;

[0058] Figure 9 Structure schematic diagram of automatic feeding device in bearing inner ring processing equipment of the embodiment; at this time, the push-pull piece is in the first position state;

[0059] Figure 10 Structure schematic diagram of automatic feeding device in bearing inner ring processing equipment of the embodiment; at this time, the push-pull piece is in the second position state;

[0060] Figure 11 Structure schematic diagram of automatic feeding device in bearing inner ring processing equipment of the embodiment; at this time, the push-pull piece is in the third position state;

[0061] Figure 12 Structure schematic diagram of push-pull piece in bearing inner ring processing equipment of the embodiment;

[0062] Figure 13 Lateral sectional view of push-pull piece in bearing inner ring processing equipment of the embodiment;

[0063] Figure 14 Structure schematic diagram of groove lapping module in bearing inner ring processing equipment of the embodiment;

[0064] Figure 15 Lateral sectional view of groove lapping module in bearing inner ring processing equipment of the embodiment;

[0065] Figure 16 Front view of groove lapping module in bearing inner ring processing equipment of the embodiment. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application. EMBODIMENT

[0067] A bearing inner ring processing equipment, at least including an end face grinding module, an outer diameter grinding module, an inner diameter grinding module, a groove grinding module and a groove lapping module. Additional automatic equipment can be provided between each module for series connection, or each module can work independently.

[0068] As Figure 1 and Figure 2 shown, wherein the end face grinding module includes a material guiding assembly 12 and two end face grinding units 11, the two end face grinding units 11 are coaxially arranged and form an end face grinding interval between the two end face grinding units 11.

[0069] AsFigure 1 and Figure 2 As shown in the figure, the material guiding assembly 12 comprises an upper guide plate 121, a lower guide plate 122 and a material guiding driving unit. The upper guide plate 121 and the lower guide plate 122 are arranged in parallel and form a material guiding channel between the upper guide plate 121 and the lower guide plate 122. The material guiding channel passes through the end face grinding area. The material guiding driving unit is used to drive the bearing inner ring 01 to move along the material guiding channel.

[0070] During the processing, the distance between the two end face grinding units 11 is adjusted. The two end face grinding units 11 rotate. The axial size of the bearing inner ring 01 is slightly larger than the thickness of the material guiding cylinder, that is, the two ends of the bearing protrude out of the material guiding assembly 12. Under the driving of the material guiding driving unit, the bearing inner ring 01 passes through the end face grinding area along the material guiding channel in sequence. The two end face grinding units 11 grind the two end faces of the bearing inner ring 01. The end face grinding module has the advantages of simple structure, high automation degree and high processing efficiency.

[0071] As shown in the figure, Figure 1 and Figure 2 Specifically, the end face grinding unit 11 can be a grinding wheel. The two grinding wheels rotate independently and are arranged to rotate in opposite directions. The side of the upper guide plate 121 and the lower guide plate 122 facing the material guiding channel is provided with a limiting convex strip. The limiting convex strip is arranged along the length direction of the material guiding channel. The material guiding convex strip corresponds to the groove of the bearing inner ring blank and is used to axially position and limit the bearing inner ring 01 relative to the material guiding channel.

[0072] As shown in the figure, Figure 3 The outer diameter grinding module comprises a guide wheel 21, a third clamping assembly and an outer diameter grinding unit 22. The third clamping assembly comprises a third magnetic pole and a third rotary driving unit. The third rotary driving unit drives the third magnetic pole to rotate. The front end of the third magnetic pole forms a third clamping interval. The guide wheel 21 and the outer diameter grinding unit 22 are oppositely arranged relative to the third clamping interval.

[0073] The outer circumferential surface of the bearing inner ring 01 is ground based on the end face. The cylindrical degree of the outer circumferential surface of the bearing inner ring 01 is improved, which can improve the rotation accuracy of the bearing during operation to a certain extent. At the same time, the outer circumferential surface of the bearing inner ring 01 can also be used as a processing reference in subsequent processing, for example, in the inner circumferential surface grinding process, to create a basis for subsequent processing operations.

[0074] As shown in the figure, Figure 4 and Figure 5As shown in the drawings, the inner diameter grinding module comprises a first clamping assembly, an outer support assembly 32 and an inner grinding unit 33. The first clamping assembly comprises a first magnetic pole 31 and a first rotary drive unit. The first rotary drive unit drives the first magnetic pole 31 to rotate. The front end of the first magnetic pole 31 forms a first clamping interval. The outer support assembly 32 is located outside the first clamping interval. The inner grinding unit 33 is arranged opposite to the first magnetic pole 31.

[0075] The inner diameter grinding module is used for grinding the inner circumferential surface of the bearing inner ring 01. During grinding, the outer support assembly 32 and the inner grinding unit 33 can be selectively arranged opposite to the wall thickness of the bearing inner ring 01. The load during grinding is completely borne by the wall thickness of the bearing inner ring 01, thereby reducing the overall deformation.

[0076] As shown in the drawings, Figures 6-8 The groove grinding module comprises a second clamping assembly, a movable support assembly and an outer grinding unit. The second clamping assembly comprises a second magnetic pole 41 and a second rotary drive unit. The second rotary drive unit drives the second magnetic pole 41 to rotate. The front end of the second magnetic pole 41 forms a second clamping interval. The outer grinding unit is located on one side of the second clamping interval.

[0077] As shown in the drawings, Figures 6-8 The movable support assembly comprises a support seat 422 and a feeding drive unit 424. The support seat 422 is provided with at least two inner support members 421. The inner support members 421 are arranged opposite to the second magnetic pole 41. The feeding drive unit 424 is used for driving the support seat 422 to move relative to the second clamping interval.

[0078] The groove grinding module is used for grinding the groove of the bearing inner ring 01. During grinding, the movable support assembly and the outer grinding unit can be selectively arranged opposite to the wall thickness of the bearing inner ring 01. The load during grinding is completely borne by the wall thickness of the bearing inner ring 01, thereby reducing the overall deformation.

[0079] In similar processing scenarios, the common support form is external support. The inner support form is relatively complex to set. In order to feed and discharge the bearing ring, the external support form needs to be set to be movable, which has requirements for the structure and setting form of the inner support.

[0080] As shown in the drawings, Figures 6-8 Specifically, the inner support member 421 comprises a spherical support unit made of ceramic material. In order to ensure sufficient contact between the inner support member 421 and the bearing inner ring 01, the inner support member 421 will lift part of the bearing inner ring 01 during feeding and always contact the bearing inner ring 01 during subsequent processing. The spherical shape can guide the feeding of the inner support member 421.

[0081] As shown in Figures 6-8 Specifically, the movable support assembly further comprises an adjusting seat 423, and the support seat 422 is connected with the adjusting seat 423 through a linear bearing. The stability of the movement of the support seat 422 and the inner support 421 can be ensured, so that the feeding accuracy of the inner support 421 is improved.

[0082] The application avoids the overall extrusion deformation of the bearing inner ring 01 in the grinding process by reasonably setting the form of the inner support, thereby improving the product quality.

[0083] As shown in Figures 14-16 The channel lapping module comprises a lapping driving assembly and a centering clamping assembly. The lapping driving assembly comprises a clamping base 51 and a fourth driving unit. The fourth driving unit is used to drive the clamping base 51 to rotate. The front end of the clamping base 51 forms a fourth clamping interval.

[0084] As shown in Figures 14-16 The centering clamping assembly comprises a centering shaft. The centering shaft is arranged opposite to the clamping base 51, and the center of the centering shaft coincides with the rotation center of the clamping base 51. The centering shaft comprises a centering segment 53 and a pressing segment. The centering segment 53 is arranged towards the fourth clamping interval. At least two centering support blocks 54 are arranged on the centering segment 53. The centering support blocks 54 are located on the outer circumferential surface of the centering segment 53 and are distributed in the circumferential direction. A pressing bearing 55 is arranged on the pressing segment.

[0085] During the lapping process, one end face of the bearing inner ring 01 abuts against the clamping base 51, and the other end face is pressed by the pressing bearing 55. The centering segment 53 and the centering support blocks 54 are located in the bearing inner ring 01 to support the bearing inner ring 01 and complete the clamping of the bearing inner ring 01. Finally, the clamping base 51 drives the bearing inner ring 01 to rotate, and the oil stone 52 is used to lap the channel.

[0086] The channel lapping module is used to lap the channel after the grinding operation of the channel is completed, so as to further improve the accuracy of the channel.

[0087] As shown in Figures 9-13 As a specific embodiment, the channel grinding module further comprises an automatic feeding device. The automatic feeding device comprises a feeding assembly 431, a feeding operation assembly and an auxiliary support assembly 433. The feeding assembly 431 comprises a feeding channel. The discharge port of the feeding channel is arranged downward.

[0088] As shown in Figures 9-13As shown, the feeding operation assembly includes a feeding driving unit and a push-pull piece 432, the push-pull piece 432 includes a support plate 4321, one side of the support plate 4321 is provided with an upper limiting block 4322 and a lower limiting block 4324, the support plate 4321, the upper limiting block 4322 and the lower limiting block 4324 form a containing interval 4323 therebetween, the containing interval 4323 is provided with a feeding port and a discharging port, and the support plate 4321 is provided with a support operation channel 4325.

[0089] As shown in the first position state, the second position state and the third position state of the push-pull piece 432, the auxiliary support assembly 433 is arranged corresponding to the discharging port of the containing interval 4323, and the auxiliary support assembly 433 is used for preventing the bearing inner ring 01 from being discharged from the discharging channel. Figures 9-13 As shown in the first position state, the second position state and the third position state of the push-pull piece 432, the auxiliary support assembly 433 is arranged corresponding to the discharging port of the containing interval 4323, and the auxiliary support assembly 433 is used for preventing the bearing inner ring 01 from being discharged from the discharging channel.

[0090] As shown in the first position state, the second position state and the third position state of the push-pull piece 432, the auxiliary support assembly 433 is arranged corresponding to the discharging port of the containing interval 4323, and the auxiliary support assembly 433 is used for preventing the bearing inner ring 01 from being discharged from the discharging channel. Figures 9-13 As shown in the first position state, the second position state and the third position state of the push-pull piece 432, the auxiliary support assembly 433 is arranged corresponding to the discharging port of the containing interval 4323, and the auxiliary support assembly 433 is used for preventing the bearing inner ring 01 from being discharged from the discharging channel.

[0091] As shown in the first position state, the second position state and the third position state of the push-pull piece 432, the auxiliary support assembly 433 is arranged corresponding to the discharging port of the containing interval 4323, and the auxiliary support assembly 433 is used for preventing the bearing inner ring 01 from being discharged from the discharging channel.

[0092] As shown in the first position state, the second position state and the third position state of the push-pull piece 432, the auxiliary support assembly 433 is arranged corresponding to the discharging port of the containing interval 4323, and the auxiliary support assembly 433 is used for preventing the bearing inner ring 01 from being discharged from the discharging channel.

[0093] Then the push-pull piece 432 enters the first position state from the second position state. During the process of shifting position and after entering the first position state, the auxiliary support assembly 433 corresponds to the discharge port of the accommodation section 4323, preventing the bearing inner ring 01 from being discharged from the discharge port. After entering the first position state, the bearing inner ring 01 is located in the second clamping section and aligned with the second magnetic pole 41. Then the movable support assembly works, the inner support piece 421 passes through the support operation channel 4325 and enters the bearing inner ring 01, completing the clamping and positioning operation of the bearing inner ring 01.

[0094] When the bearing inner ring 01 completes the groove grinding process in the first position state, the auxiliary support assembly 433 exits, and the push-pull piece 432 moves reversely through the second position state and finally reaches the third position state. When the push-pull piece 432 passes through the second position state, the bearing inner ring 01 in the accommodation section 4323 cannot enter the feeding channel because there is still a bearing inner ring 01 in the accommodation section 4323. When the push-pull piece 432 enters the third position state, the bearing inner ring 01 in the accommodation section 4323 is discharged from the discharge port because the auxiliary support assembly 433 is misaligned with the discharge port of the accommodation section 4323, completing the single processing operation of the bearing inner ring 01. Finally, the push-pull piece 432 resets to the second position state to prepare for the next processing operation.

[0095] The automatic feeding device can automatically complete the feeding and discharging operations of the bearing inner ring 01 during the groove grinding process, having the advantages of stable operation and high automation degree.

[0096] As shown in Figures 9-13 , specifically, the auxiliary support assembly 433 includes a material receiving and supporting unit 4331 and a processing supporting unit 4332. The material receiving and supporting unit 4331 includes a lower stopper, which is located below the discharge port of the feeding channel. The area between the lower stopper and the discharge port of the feeding channel forms a push-pull channel, which extends to the second clamping section along the movement direction of the push-pull piece 432. The processing supporting unit 4332 is located below the second clamping section.

[0097] The material receiving and supporting unit 4331 is used to close the discharge port in the second position state and between the first position and the second position, avoiding the bearing inner ring 01 from falling. The processing supporting unit 4332 is used to pre-support and position the bearing inner ring 01 when the push-pull piece 432 enters the first position state. When the inner support piece 421 is in place, the bearing inner ring 01 is separated from the processing supporting unit 4332.

[0098] A bearing inner ring processing technology, including the following steps:

[0099] S1. Grinding end face: using the end face grinding module in the bearing inner ring 01 processing equipment as described above, the bearing inner ring 01 enters the end face grinding interval along the material guide channel in turn, and the two end face grinding units 11 grind the two end faces of the bearing inner ring 01 at the same time.

[0100] S10. Grinding outer peripheral surface: using the outer diameter grinding module in the bearing inner ring 01 processing equipment as described above, the outer peripheral surface of the bearing inner ring 01 is ground based on one of the end faces of the bearing inner ring 01.

[0101] It should be noted that for bearings with relatively low rotational accuracy requirements, the grinding of the outer peripheral surface can be omitted.

[0102] S2. Grinding inner peripheral surface: using the inner diameter grinding module in the bearing inner ring 01 processing equipment as described above, the inner side surface of the bearing inner ring 01 is ground.

[0103] Specifically, one of the end faces of the bearing inner ring 01 is in contact with the first magnetic pole 31, the outer support assembly 32 is in contact with the outer peripheral surface of the bearing inner ring 01, and the inner grinding unit 33 grinds the inner peripheral surface of the bearing inner ring 01. During the grinding process of the inner peripheral surface of the bearing inner ring 01, the outer peripheral surface of the bearing inner ring 01 is used as the reference.

[0104] S3. Grinding channel: using the channel grinding module in the bearing inner ring 01 processing equipment as described above, the channel of the bearing inner ring 01 is ground.

[0105] Specifically, the initial state of the push-pull piece 432 is the second position state. When there is no bearing inner ring 01 in the accommodation interval 4323 and the push-pull piece 432 is in the second position state, the bearing inner ring 01 in the feeding channel enters the accommodation interval 4323 under the action of gravity, completing the feeding of a single bearing inner ring 01.

[0106] Then the push-pull piece 432 is driven by the feeding driving unit to enter the first position state from the second position state. After the bearing inner ring 01 enters the second clamping interval, one of the end faces of the bearing inner ring 01 is in contact with the second magnetic pole 41, and the movable support assembly moves towards the second clamping interval. The inner support piece 421 is inserted into the bearing inner ring 01 and contacts the inner peripheral surface of the bearing inner ring 01. The outer grinding unit grinds the channel of the bearing inner ring 01.

[0107] Subsequently, the auxiliary support assembly 433 exits, the push-pull piece 432 reverses through the second position state under the drive of the movement feeding driving unit, and finally reaches the third position state, completing the channel grinding operation of the bearing inner ring 01, which is discharged from the discharge port, completing the channel grinding operation of a single bearing inner ring 01. Finally, the push-pull piece 432 is reset to the second position state under the drive of the movement feeding driving unit.

[0108] S4. Refine the groove: use the groove refining module in the bearing inner ring 01 processing equipment as described above, and refine the groove on the inner periphery surface as the reference.

[0109] Specifically, one of the end faces of the bearing inner ring 01 abuts against the clamping base 51, and the other end face abuts against the outer ring of the pressing bearing 55. The centering shaft is inserted into the bearing inner ring 01, and the centering support block 54 is in contact with the inner periphery surface of the bearing inner ring 01. The fourth driving unit drives the clamping base 51 and the bearing inner ring 01 to rotate, and the oil stone 52 is used to refine the groove of the bearing inner ring 01.

[0110] In summary, the above only describes the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bearing inner ring machining apparatus characterized by comprising: At least comprising: The inner diameter grinding module comprises a first clamping assembly, an outer support assembly and an inner grinding unit, the first clamping assembly comprises a first magnetic pole and a first rotary drive unit, the first rotary drive unit drives the first magnetic pole to rotate, and the front end of the first magnetic pole forms a first clamping interval; the outer support assembly is located outside the first clamping interval, and the inner grinding unit is arranged opposite to the first magnetic pole; The groove grinding module comprises a second clamping assembly, a movable support assembly and an outer grinding unit, the second clamping assembly comprises a second magnetic pole and a second rotary drive unit, the second rotary drive unit drives the second magnetic pole to rotate, and the front end of the second magnetic pole forms a second clamping interval; the outer grinding unit is located on one side of the second clamping interval; The movable support assembly comprises a support seat and a feeding drive unit, at least two inner support members are arranged on the support seat, the inner support members are arranged opposite to the second magnetic pole, and the feeding drive unit is used to drive the support seat to move relative to the second clamping interval; The inner support member comprises a spherical support unit made of ceramic material; The groove grinding module further comprises an automatic feeding device, the automatic feeding device comprises a feeding assembly, a feeding operation assembly and an auxiliary support assembly; the feeding assembly comprises a feeding channel, and the discharge port of the feeding channel is arranged downward; The feeding operation assembly comprises a feeding drive unit and a push-pull piece, the push-pull piece comprises a support plate, one side of the support plate is provided with an upper limiting block and a lower limiting block, a containing interval is formed between the support plate, the upper limiting block and the lower limiting block, the containing interval is provided with a feeding port and a discharging port, and a support operation channel is formed in the support plate; The push-pull piece is arranged inclined to the vertical direction, and the push-pull piece has at least three position states: in the first position state, the containing interval is aligned with the second clamping interval; in the second position state, the feeding port of the containing interval is aligned with the discharge port of the feeding channel; The third position state is a discharging state; When the push-pull piece is in the first position state, the second position state and switches between the first position state and the second position state, the auxiliary support assembly corresponds to the discharging port of the containing interval, and the auxiliary support assembly is used to prevent the inner ring of the bearing from being discharged from the discharging channel; when the push-pull piece is in the third position state, the auxiliary support assembly is misaligned with the discharging port of the containing interval; the feeding drive unit is used to drive the push-pull piece to move between the first position state, the second position state and the third position state; The auxiliary support assembly comprises a receiving support unit and a machining support unit, the receiving support unit comprises a lower stop block, the lower stop block is located below the discharge port of the feeding channel, and an area between the lower stop block and the discharge port of the feeding channel forms a push-pull channel, the push-pull channel extends to the second clamping interval along the movement direction of the push-pull piece; and the machining support unit is located below the second clamping interval.

2. The bearing inner race machining apparatus of claim 1, wherein: The movable support assembly further comprises an adjusting seat, and the support seat is connected with the adjusting seat through a linear bearing.

3. The bearing inner race machining apparatus of claim 1, wherein: The end face grinding module comprises a material guiding assembly and two end face grinding units, the two end face grinding units are coaxially arranged, and an end face grinding interval is formed between the two end face grinding units; The material guiding assembly comprises an upper guide plate, a lower guide plate and a material guiding driving unit, the upper guide plate and the lower guide plate are arranged in parallel, a material guiding channel is formed between the upper guide plate and the lower guide plate, the material guiding channel passes through the end face grinding interval, and the material guiding driving unit is used for driving the bearing inner ring to move along the material guiding channel.

4. The bearing inner race machining apparatus of claim 1, wherein: The outer diameter grinding module comprises a guide wheel, a third clamping assembly and an outer diameter grinding unit, the third clamping assembly comprises a third magnetic pole and a third rotating driving unit, the third rotating driving unit drives the third magnetic pole to rotate, a front end of the third magnetic pole forms a third clamping interval, and the guide wheel and the outer diameter grinding unit are oppositely arranged relative to the third clamping interval.

5. The bearing inner race machining apparatus of claim 1, wherein: The groove lapping module comprises a lapping driving assembly and a centering clamping assembly, the lapping driving assembly comprises a clamping base and a fourth driving unit, the fourth driving unit is used for driving the clamping base to rotate, and a front end of the clamping base forms a fourth clamping interval; The centering clamping assembly comprises a centering shaft, the centering shaft is arranged opposite to the clamping base, and the center of the centering shaft coincides with the rotation center of the clamping base; the centering shaft comprises a centering segment and a pressing segment, the centering segment is arranged towards the fourth clamping interval; at least two centering supporting blocks are arranged on the centering segment, the centering supporting blocks are located on the outer circumferential surface of the centering segment and are distributed in the circumferential direction; and a pressing bearing is sleeved on the pressing segment.

6. A process for machining a bearing inner race, characterized in that, At least the following steps are included: S1. Grinding end face: grinding processing is performed on the two end faces of the bearing inner ring; S2. Grinding inner circumferential surface: the inner diameter grinding module in the bearing inner ring processing equipment in any one of claims 1-5 is used to perform grinding processing on the inner side surface of the bearing inner ring; Wherein, one of the end faces of the bearing inner ring is in contact with the first magnetic pole, the outer support assembly is in contact with the outer circumferential surface of the bearing inner ring, and the inner grinding unit performs grinding processing on the inner circumferential surface of the bearing inner ring; S3. Grinding groove: the groove grinding module in the bearing inner ring processing equipment in any one of claims 1-5 is used to perform grinding processing on the groove of the bearing inner ring; Wherein, one of the end faces of the bearing inner ring is in contact with the second magnetic pole, the movable support assembly moves towards the second clamping interval; the inner support piece is inserted into the bearing inner ring and is in contact with the inner circumferential surface of the bearing inner ring; and the outer grinding unit performs grinding processing on the groove of the bearing inner ring.

7. The bearing inner ring processing process according to claim 6, wherein: Between S1 and S2, step S10 is further included, S10. Grinding outer circumferential surface: taking one of the end faces of the bearing inner ring as a reference, grinding processing is performed on the outer circumferential surface of the bearing inner ring; In S2, taking the outer circumferential surface of the bearing inner ring as a reference, grinding processing is performed on the inner circumferential surface of the bearing inner ring; Further comprising the following steps: S4. Lapping groove: taking the inner circumferential surface as a reference, lapping processing is performed on the groove.

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