Clamping tool for axial machining of bearing inner ring
By designing a clamping fixture that includes components such as a base, positioning shaft, and sleeve, the problem of multiple clamping operations in the axial machining of the bearing inner ring is solved, realizing the convenience and stability of machining the entire surface of the bearing inner ring, and reducing the number of clamping operations and the risk of damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-04-10
AI Technical Summary
During the axial machining of the bearing inner ring, the existing clamping method makes it difficult to grind the part of the outer surface of the bearing inner ring near the end edge, requiring multiple clamping to complete the full surface machining.
A clamping fixture consisting of a base, positioning shaft, sleeve, machining groove, abutment post, locking assembly, and adjustment assembly is used. Through the sliding connection between the sleeve and the base and the fixing of the locking assembly, stable clamping of the bearing inner ring is achieved, reducing the number of clamping operations.
This technology enables convenient machining of the outer surface of the bearing inner ring from all directions, reduces the number of clamping operations, improves machining efficiency, and reduces the risk of damage to the bearing inner ring.
Smart Images
Figure CN224102678U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bearing processing technical field especially is related to a clamping tool for bearing inner ring axial processing. BACKGROUND
[0002] Bearing is a kind of support assembly for the position of mechanical rotating component, and it plays the role of reducing load friction in mechanical transmission.The existing bearing structure is mainly composed of inner ring and outer ring, and their spherical surfaces are matched to form the working surface of bearing.In the process of manufacturing inner ring, in order to ensure the correct assembly of inner ring and other components, the outer surface of inner ring needs to be axially machined.
[0003] When the bearing inner ring is axially machined, the bearing inner ring is usually clamped on a three-jaw chuck.In the process of clamping the bearing inner ring, in order to make the bearing inner ring clamped stably, the end wall of one end of the bearing inner ring is usually attached to the three-jaw chuck.
[0004] In the process of machining the outer surface of the bearing inner ring by the grinding wheel, the grinding wheel is limited by the three-jaw chuck, and it is not easy to polish the edge part of the outer surface of the bearing inner ring close to one end of the three-jaw chuck.Therefore, in order to axially polish the edge part of the outer surface of the bearing inner ring close to the end surface of both ends, the bearing inner ring on the three-jaw chuck needs to be clamped again. SUMMARY
[0005] In order to reduce the clamping times in the process of axial machining of the bearing inner ring, the application provides a clamping tool for axial machining of bearing inner ring.
[0006] The clamping tool for axial machining of bearing inner ring provided by the application adopts the following technical scheme:
[0007] A clamping tool for axial machining of bearing inner ring, comprising a base, a positioning shaft is arranged on the base, the positioning shaft and the base are jointly sleeved with a sleeve, the sleeve is slidably connected with the base, machining grooves are arranged on both side walls of the sleeve, the machining grooves are oppositely arranged, the machining grooves penetrate through the top wall and the bottom wall of the sleeve, an abutment column is arranged on one side of the positioning shaft, the abutment column is fixedly connected with the base, a locking assembly is arranged between the abutment column and one end of the sleeve, the locking assembly is used to keep the sleeve and the abutment column relatively stationary, an abutment rod is arranged on the other side of the positioning shaft, an adjusting assembly is arranged between the abutment rod and the other end of the sleeve, and the adjusting assembly is used to adjust the distance between the abutment rod and the abutment column.
[0008] By adopting the technical scheme, when the bearing inner ring is clamped between the base and the sleeve, the extrusion pad presses the bearing inner ring against the flexible pad, and the extrusion pad and the flexible pad are in flexible contact with the bearing inner ring, thereby reducing the risk of the outer wall of the bearing inner ring being pressed and damaged.
[0009] Preferably, the abutting column is provided with a flexible pad on the side facing the positioning shaft, and the abutting rod is provided with an extrusion pad on the side facing the positioning shaft.
[0010] By adopting the technical scheme, when the bearing inner ring is clamped between the base and the sleeve, the extrusion pad presses the bearing inner ring against the flexible pad, and the extrusion pad and the flexible pad are in flexible contact with the bearing inner ring, thereby reducing the risk of the outer wall of the bearing inner ring being pressed and damaged.
[0011] Preferably, the outer wall of the positioning shaft is sleeved with an anti-skid rubber sleeve, the inner wall of the anti-skid rubber sleeve is attached to the outer wall of the positioning shaft, and the outer wall of the anti-skid rubber sleeve is used to be attached to the bearing inner ring.
[0012] By adopting the technical scheme, the positioning shaft increases the friction with the bearing inner ring through the anti-skid rubber sleeve, thereby improving the stability of the clamping of the bearing inner ring.
[0013] Preferably, the positioning shaft is sleeved with an upper rubber pad and a lower rubber pad, the upper rubber pad is located above the lower rubber pad, the lower rubber pad is used to abut between the top of the base and the bottom of the bearing inner ring, and the upper rubber pad is used to abut between the inner wall of the sleeve and the top of the bearing inner ring.
[0014] By adopting the technical scheme, the base increases the friction with the bearing inner ring through the lower rubber pad, and the base reduces the risk of scratching the bearing inner ring through the lower rubber pad, the sleeve increases the friction with the bearing inner ring through the upper rubber pad, and the sleeve reduces the risk of scratching the bearing inner ring through the upper rubber pad, thereby improving the clamping quality of the bearing inner ring.
[0015] Preferably, the sleeve is provided with a containing through hole penetrating through the end wall of the sleeve, the containing through hole is in communication with the processing groove, and the containing through hole is used for containing the base, the positioning shaft, the abutting column, the abutting rod, the upper rubber pad, the lower rubber pad and the inner ring of the bearing.
[0016] By using the above technical scheme, when the inner ring of the bearing is located between the sleeve and the base, the upper rubber pad is abutted between the top of the inner ring of the bearing and the inner wall of the containing through hole, and at this time, the lower rubber pad on the top of the base is abutted on the bottom of the inner ring of the bearing, thereby forming the effect of limiting the upper and lower positions of the inner ring of the bearing.
[0017] Preferably, a guide groove is formed in the inner wall of the containing through hole, the guide groove penetrates through the end wall of the sleeve, a guide convex strip is fixedly arranged on the outer wall of the base, and the guide convex strip is slidingly arranged in the guide groove.
[0018] By using the above technical scheme, the sleeve and the base are slidingly connected through the cooperation of the guide convex strip and the guide groove, and the sleeve and the base are not easy to rotate relative to each other.
[0019] Preferably, the locking assembly comprises a locking screw and a locking nut, the locking nut is rotationally arranged at one end of the sleeve away from the adjusting assembly, the locking nut is sleeved on the abutting column and the bottom column, the locking screw is fixedly arranged on one side of the abutting column away from the positioning shaft, the locking screw is used for being threadedly connected with the locking nut, and the containing through hole is used for inserting the locking screw.
[0020] By using the above technical scheme, when the locking nut is threadedly connected on the locking screw, the sleeve and the base remain relatively stationary, when the locking nut on the locking screw is rotated, the locking nut rotates relative to the sleeve, and the locking nut moves along the locking screw, at this time, the locking nut drives the sleeve to move along the base, and when the locking nut is separated from the locking screw, the sleeve slides along the base.
[0021] Preferably, the adjusting assembly comprises an adjusting nut and an adjusting screw, the adjusting nut is fixedly arranged at one end of the sleeve away from the locking assembly, the adjusting nut is threadedly connected with the adjusting screw, one end of the adjusting screw located in the sleeve is connected with one end of the abutting rod away from the positioning shaft, an adjusting knob is fixedly arranged on the other end of the adjusting screw located outside the sleeve, and the diameter of the adjusting knob is greater than the diameter of the adjusting screw.
[0022] By using the above technical scheme, the adjusting knob increases the contact area between the hand of the worker and the adjusting screw, so that the worker can easily rotate the adjusting screw, when the adjusting screw on the adjusting nut is rotated, the adjusting screw moves along the adjusting nut, at this time, the adjusting screw drives the abutting rod to move in the sleeve, thereby achieving the effect of adjusting the distance between the abutting rod and the abutting column.
[0023] To sum up, the present application includes at least one of the following beneficial technical effects:
[0024] 1. By setting the base, positioning shaft, sleeve, processing groove, abutment column, locking assembly, abutment rod and adjusting assembly, the clamping of the bearing inner ring is realized. When the bearing inner ring is clamped between the base and the sleeve, the side wall of the bearing inner ring to be axially machined is exposed from the processing groove, and the two end faces of the bearing inner ring to be machined are also exposed from the processing groove, facilitating the grinding of the bearing inner ring by the grinding wheel and reducing the clamping frequency during the axial machining of the bearing inner ring.
[0025] 2. By setting the locking screw and the locking nut, the effect of keeping the sleeve and the abutment column relatively stationary is achieved.
[0026] 3. By setting the adjusting nut, adjusting screw and adjusting knob, the effect of adjusting the distance between the abutment rod and the abutment column is achieved. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 is a schematic diagram of a clamping tool structure for axial machining of a bearing inner ring in an embodiment of the present application.
[0028] Figure 2 is a cross-sectional view of a clamping tool for axial machining of a bearing inner ring in an embodiment of the present application.
[0029] Figure 3 is a cross-sectional view showing the positional relationship between the upper rubber pad and the lower rubber pad in an embodiment of the present application.
[0030] Figure 4 is a cross-sectional view showing the positional relationship between the extrusion pad and the flexible pad in an embodiment of the present application.
[0031] Figure 5 is a cross-sectional view showing the positional relationship between the accommodating through hole and the processing groove in an embodiment of the present application.
[0032] Reference signs: 1, base; 2, positioning shaft; 21, anti-skid rubber sleeve; 22, upper rubber pad; 23, lower rubber pad; 3, sleeve; 31, accommodating through hole; 32, processing groove; 4, abutment column; 41, flexible pad; 5, locking assembly; 51, locking screw; 52, locking nut; 6, abutment rod; 61, extrusion pad; 7, adjusting assembly; 71, adjusting screw; 711, adjusting knob; 72, adjusting nut; 8, guide groove; 81, guide ridge; 9, bearing inner ring. DETAILED DESCRIPTION
[0033] The following will be described in detail in combination with the Figures 1-5 The present application will be further described in detail.
[0034] An embodiment of the present application discloses a clamping tool for axial machining of a bearing inner ring. Referring toFigures 1 to 5 The sleeve 3 is provided with a receiving hole 31. The receiving hole 31 is square in cross section and penetrates the end wall of the sleeve 3. The sleeve 3 is provided with a machining groove 32 on each side wall. The machining groove 32 penetrates the top wall and the bottom wall of the sleeve 3 and is in communication with the receiving hole 31. The base 1 is inserted into the receiving hole 31 and is in sliding connection with the sleeve 3. The positioning shaft 2 is installed on the top of the base 1 in the vertical direction. The bearing inner ring 9 is sleeved on the positioning shaft 2. The receiving hole 31 can accommodate the positioning shaft 2 and the bearing inner ring 9. The abutting column 4 is arranged on one side of the positioning shaft 2 and is integrally formed with the base 1. The cross section of the abutting column 4 in the vertical direction and the cross section of the base 1 in the vertical direction together form a circle. The outer wall of the abutting column 4 and the outer wall of the abutting column 4 are tangent to the inner wall of the receiving hole 31. The locking assembly 5 is installed between the abutting column 4 and one end of the sleeve 3. The locking assembly 5 is used to keep the sleeve 3 and the abutting column 4 relatively stationary. The abutting rod 6 is arranged on the other side of the positioning shaft 2 and is accommodated in the receiving hole 31. The adjusting assembly 7 is installed between the abutting rod 6 and the other end of the sleeve 3. The adjusting assembly 7 is used to adjust the distance between the abutting rod 6 and the abutting column 4. When clamping the bearing inner ring 9, first move the sleeve 3 to expose the positioning shaft 2, then sleeve the bearing inner ring 9 on the positioning shaft 2. At this time, the positioning shaft 2 limits the bearing inner ring 9. Then move the sleeve 3 again to move the positioning shaft 2 and the bearing inner ring 9 into the sleeve 3. At this time, the top of the base 1 and the inner wall of the sleeve 3 limit the bearing inner ring 9 from above and below. Then use the locking assembly 5 to fix the sleeve 3 and the abutting column 4, and make the machined outer wall of the bearing inner ring 9 exposed from the machining groove 32. Then use the adjusting assembly 7 to drive the abutting rod 6 to move. When the abutting rod 6 presses the bearing inner ring 9 against the abutting column 4, the abutting rod 6 and the abutting column 4 clamp the outer wall of the bearing inner ring 9, thereby achieving clamping of the bearing inner ring 9. When the bearing inner ring 9 is clamped between the base 1 and the sleeve 3, the side wall of the bearing inner ring 9 to be axially machined is exposed from the machining groove 32, and the two end faces of the bearing inner ring 9 to be machined are also exposed from the machining groove 32. This facilitates the grinding of the bearing inner ring 9 by the grinding wheel and reduces the number of clamping times during the axial machining of the bearing inner ring 9.
[0035] In order to improve the clamping quality of the bearing inner ring 9, refer to Figures 1 to 4The abutting column 4 is provided with a flexible pad 41 made of rubber on the side facing the positioning shaft 2, and the abutting rod 6 is provided with an extrusion pad 61 made of rubber on the side facing the positioning shaft 2. When the bearing inner ring 9 is clamped between the base 1 and the sleeve 3, the flexible pad 41 and the extrusion pad 61 are located in the accommodating through hole 31, and the extrusion pad 61 presses the bearing inner ring 9 against the flexible pad 41. The extrusion pad 61 and the flexible pad 41 are in flexible contact with the bearing inner ring 9, which reduces the risk of the outer wall of the bearing inner ring 9 being damaged. The positioning shaft 2 is wrapped with an anti-skid rubber sleeve 21, and the inner wall of the anti-skid rubber sleeve 21 is in contact with the outer wall of the positioning shaft 2. When the bearing inner ring 9 is sleeved on the positioning shaft 2, the anti-skid rubber sleeve 21 is located in the accommodating through hole 31, and the outer wall of the anti-skid rubber sleeve 21 is in contact with the bearing inner ring 9. The positioning shaft 2 increases the friction with the bearing inner ring 9 through the anti-skid rubber sleeve 21, thereby improving the stability of the clamping of the bearing inner ring 9. The anti-skid rubber sleeve 21 is sleeved with an upper rubber pad 22 and a lower rubber pad 23 made of rubber, and the upper rubber pad 22 is located above the lower rubber pad 23. When the bearing inner ring 9 is sleeved on the positioning shaft 2, the lower rubber pad 23 is located in the accommodating through hole 31 and abuts between the top of the base 1 and the bottom of the bearing inner ring 9. On the one hand, the base 1 increases the friction with the bearing inner ring 9 through the lower rubber pad 23, and on the other hand, the base 1 reduces the risk of scratching the bearing inner ring 9 through the lower rubber pad 23. When the bearing inner ring 9 is sleeved on the positioning shaft 2, the upper rubber pad 22 is located in the accommodating through hole 31 and abuts between the inner wall of the sleeve 3 and the inner wall of the accommodating through hole 31. On the one hand, the sleeve 3 increases the friction with the bearing inner ring 9 through the upper rubber pad 22, and on the other hand, the sleeve 3 reduces the risk of scratching the bearing inner ring 9 through the upper rubber pad 22.
[0036] In order to realize the sliding connection effect of the sleeve 3 and the base 1, refer to Figures 2 to 5 A guide groove 8 is formed in the inner wall of the accommodating through hole 31, and the guide groove 8 penetrates through the end walls of the sleeve 3. The outer wall of the base 1 is provided with a guide convex strip 81, and the guide convex strip 81 is slidingly arranged in the guide groove 8. The sleeve 3 and the base 1 are connected in a sliding manner through the cooperation of the guide convex strip 81 and the guide groove 8, thereby realizing the sliding connection effect of the sleeve 3 and the base 1, and preventing the sleeve 3 and the base 1 from rotating relative to each other.
[0037] In order to keep the sleeve 3 and the abutting column 4 relatively stationary, refer to Figures 1 to 4When the locking nut 52 is screwed on the locking screw 51, the sleeve 3 and the base 1 remain relatively static. When the locking nut 52 on the locking screw 51 is rotated, the locking nut 52 and the sleeve 3 are relatively rotated, and the locking nut 52 moves along the locking screw 51, at this time the locking nut 52 drives the sleeve 3 to move along the base 1. When the locking nut 52 is separated from the locking screw 51, the sleeve 3 slides along the base 1.
[0038] In order to keep the sleeve 3 and the abutting rod 6 relatively static, referring to Figures 1 to 4 The adjusting assembly 7 includes an adjusting nut 72 and an adjusting screw 71. The adjusting nut 72 is fixedly installed at one end of the sleeve 3 away from the locking assembly 5, and the adjusting nut 72 is screwed with the adjusting screw 71. The adjusting screw 71 is connected at one end inside the sleeve 3 with the other end of the abutting rod 6 away from the positioning shaft 2, and the adjusting screw 71 is installed with an adjusting knob 711 at one end outside the sleeve 3. The diameter of the adjusting knob 711 is larger than that of the adjusting screw 71, the adjusting knob 711 increases the contact area of the worker's hand with the adjusting screw 71, which is convenient for the worker to rotate the adjusting screw 71. When the adjusting screw 71 on the adjusting nut 72 is rotated, the adjusting screw 71 moves along the adjusting nut 72, at this time the adjusting screw 71 drives the abutting rod 6 to move in the sleeve 3, which realizes the effect of adjusting the distance between the abutting rod 6 and the abutting column 4.
[0039] The implementation principle of the clamping tool for machining the inner ring of the bearing in the axial direction is that: when the bearing inner ring 9 is clamped, first move the sleeve 3 to expose the positioning shaft 2, then set the bearing inner ring 9 on the positioning shaft 2, at this time the positioning shaft 2 limits the bearing inner ring 9. Then move the sleeve 3 again to move the positioning shaft 2 and the bearing inner ring 9 into the sleeve 3, at this time the top of the base 1 and the inner wall of the sleeve 3 limit the bearing inner ring 9 up and down. Then use the locking assembly 5 to fix the sleeve 3 and the abutting column 4, and make the outer wall of the bearing inner ring 9 to be machined exposed from the machining groove 32, then use the adjusting assembly 7 to drive the abutting rod 6 to move. When the abutting rod 6 presses the bearing inner ring 9 tightly on the abutting column 4, the abutting rod 6 and the abutting column 4 clamp the outer wall of the bearing inner ring 9, thereby realizing the clamping of the bearing inner ring 9. When the bearing inner ring 9 is clamped between the base 1 and the sleeve 3, the side wall of the bearing inner ring 9 to be machined is exposed from the machining groove 32, and the two end faces of the bearing inner ring 9 to be machined are also exposed from the machining groove 32, which is convenient for the grinding wheel to polish the bearing inner ring 9, and reduces the clamping frequency during the axial machining of the bearing inner ring 9.
[0040] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.
Claims
1. A clamping tool for axial machining of a bearing inner ring, comprising a base, characterized in that: The base is provided with a positioning shaft, the positioning shaft and the base are jointly provided with a sleeve, the sleeve is in sliding connection with the base, machining grooves are formed in the side walls of the sleeve, the machining grooves are oppositely arranged, the machining grooves penetrate through the top wall and the bottom wall of the sleeve, an abutting column is arranged on one side of the positioning shaft, the abutting column is fixedly connected with the base, a locking assembly is arranged between the abutting column and one end of the sleeve, the locking assembly is used for keeping the sleeve and the abutting column relatively stationary, an abutting rod is arranged on the other side of the positioning shaft, an adjusting assembly is arranged between the abutting rod and the other end of the sleeve, and the adjusting assembly is used for adjusting the distance between the abutting rod and the abutting column. The positioning shaft is provided with an upper rubber pad and a lower rubber pad, the upper rubber pad is located above the lower rubber pad, the lower rubber pad is used for abutting between the top of the base and the bottom of the inner ring of the bearing, and the upper rubber pad is used for abutting between the inner wall of the sleeve and the top of the inner ring of the bearing. The sleeve is internally provided with an accommodating through hole, the accommodating through hole penetrates through the end wall of the sleeve, the accommodating through hole is in communication with the machining grooves, and the accommodating through hole is used for accommodating the base, the positioning shaft, the abutting column, the abutting rod, the upper rubber pad, the lower rubber pad and the inner ring of the bearing. The locking assembly comprises a locking screw and a locking nut, the locking nut is rotationally arranged at the end of the sleeve away from the adjusting assembly, the locking nut is sleeved on the abutting column and the bottom column, the locking screw is fixedly arranged on the side of the abutting column away from the positioning shaft, the locking screw is used for being in threaded connection with the locking nut, and the accommodating through hole is provided for the locking screw.
2. The clamping tool for machining the inner ring of a bearing in the axial direction according to claim 1, characterized in that: The abutting column is provided with a flexible pad on the side facing the positioning shaft, and the abutting rod is provided with a pressing pad on the side facing the positioning shaft.
3. The clamping tool for machining the inner ring of a bearing in the axial direction according to claim 1, characterized in that: The outer wall of the positioning shaft is sleeved with an anti-skid rubber sleeve, the inner ring wall of the anti-skid rubber sleeve is attached to the outer wall of the positioning shaft, and the outer ring wall of the anti-skid rubber sleeve is used for being attached to the inner ring of the bearing.
4. The clamping tool for machining the inner ring of a bearing in the axial direction according to claim 1, characterized in that: A guide groove is formed in the inner wall of the accommodating through hole, the guide groove penetrates through the end walls of the sleeve, and a guide convex strip is fixedly arranged on the outer wall of the base and is in sliding arrangement in the guide groove.
5. The clamping tool for machining the inner ring of a bearing in the axial direction according to claim 1, characterized in that: The adjusting assembly comprises an adjusting nut and an adjusting screw, the adjusting nut is fixedly arranged at the end of the sleeve away from the locking assembly, the adjusting nut is in threaded connection with the adjusting screw, one end of the adjusting screw located in the sleeve is connected with the end of the abutting rod away from the positioning shaft, an adjusting knob is fixedly arranged on the other end of the adjusting screw located outside the sleeve, and the diameter of the adjusting knob is greater than the diameter of the adjusting screw.