Machining tool for joint bearing inner ring girdle
By combining a universal cylindrical grinding machine with a limiting assembly, the problem of having to clamp the inner ring of a spherical plain bearing in multiple stages was solved, achieving efficient and stable machining of the inner ring belt and reducing costs and time.
Patent Information
- Application Number
- CN202520113533.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-17
AI Technical Summary
In the existing technology, the machining efficiency of the inner ring of the spherical plain bearing is low, and the need for multiple clamping operations leads to long cycle times and high costs.
Using a universal cylindrical grinding machine, support rod, and limiting assembly, the inner ring is clamped by positioning grooves and limiting blocks, enabling simultaneous processing of the two sides of the inner ring. Double ejector pins are used to prevent displacement, and screws are used to fix the limiting blocks to improve stability.
Simultaneous processing of the inner ring belt was achieved, which improved processing efficiency, shortened the cycle time, reduced costs, and improved processing accuracy and stability.
Smart Images
Figure CN223734520U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of bearing processing equipment, and in particular to a machining fixture for the inner ring of a spherical plain bearing. Background Technology
[0002] A spherical plain bearing is a type of spherical sliding bearing. Its sliding contact surface consists of an inner spherical surface and an outer spherical surface. This structure allows the spherical plain bearing to rotate and swing at any angle during movement, giving it high flexibility and load-bearing capacity.
[0003] Reference Figure 1 and Figure 2 In the prior art, the inner ring 3 of the spherical surface of the spherical bearing has two rings 31 spaced apart, and the axis of the rings 31 is perpendicular to the axis of the inner ring 3.
[0004] The existing method for machining the inner ring is to locate the inner hole of the inner ring and press the end face, and then grind it with a special oscillating grinder. However, after machining each ring, the inner ring needs to be re-clamped, which reduces the machining efficiency of the inner ring, prolongs the machining cycle of the inner ring, and thus increases the machining cost of the inner ring. Utility Model Content
[0005] To improve the machining efficiency of the inner ring, this application provides a machining fixture for the inner ring of a spherical plain bearing.
[0006] This application provides a machining fixture for the inner ring of a spherical plain bearing, employing the following technical solution:
[0007] A machining fixture for the inner ring of a spherical plain bearing includes a universal cylindrical grinder, a support rod, and a limiting assembly. The support rod has a positioning groove on its surface for the inner ring to be inserted, the positioning groove penetrating the outer wall of the support rod. The limiting assembly includes a fixed positioning block and a movable positioning block. The fixed positioning block is connected to the inner wall of the positioning groove, and the movable positioning block is slidably connected to the inner wall of the positioning groove. The sliding direction of the movable positioning block is parallel to the axis of the support rod. When the movable positioning block slides along the inner wall of the positioning groove towards the fixed positioning block, the fixed positioning block and the movable positioning block clamp the two sides of the inner ring to form a limiting position. The universal cylindrical grinder grinds the two sides of the inner ring to form the ring.
[0008] By adopting the above technical solution, the inner ring is embedded in the positioning groove, and the movable positioning block slides along the inner wall of the positioning groove towards the inner ring. The movable positioning block and the fixed positioning block clamp the two sides of the inner ring to form a limit, thereby achieving the positioning of the inner ring. At the same time, the universal outer ring grinding machine grinds the two sides of the inner ring to form a ring, thereby achieving simultaneous processing of the ring on both sides of the inner ring. This eliminates the need for processing the inner ring ring in multiple stages, improving the processing efficiency of the inner ring, shortening the processing cycle of the inner ring, and thus reducing the processing cost of the inner ring.
[0009] Optionally, the universal cylindrical grinding machine is connected to a double-center, which clamps and fixes the support rod onto the universal cylindrical grinding machine.
[0010] By adopting the above technical solution, when the movable positioning block and the fixed positioning block clamp the two sides of the inner ring and limit the inner ring to the positioning groove, the double ejector pins press and fix the support rod body on the universal cylindrical grinding machine, so that the support rod body is not easy to deviate during the inner ring grinding process, thereby improving the machining accuracy of the inner ring.
[0011] Optionally, the limiting component also includes a screw. The end face of the support rod has a threaded hole for the screw to be threaded. The axis of the threaded hole is parallel to the sliding direction of the movable positioning block. The threaded hole communicates with the positioning groove. The end face of the movable positioning block facing the threaded hole has a threaded groove. The end of the screw passes through the threaded hole and is threaded and fixed to the inner wall of the threaded groove. When the screw rotates in the inner wall of the threaded hole, it drives the movable positioning block to move closer to the inner ring.
[0012] By adopting the above technical solution, when one end of the screw passes through the threaded hole and is screwed and fixed to the inner wall of the threaded groove, the outer circumferential surface of the screw abuts against the inner wall of the threaded groove to form a fixation, thereby realizing the installation of the screw and the movable positioning block. When the inner ring is embedded in the positioning groove, the screw is driven to rotate on the inner wall of the threaded hole, which drives the movable positioning block to move closer to the inner ring along the inner wall of the positioning groove. The movable positioning block and the fixed positioning block clamp the two sides of the inner ring to form a limit, making it difficult for the movable positioning block to deviate on the inner wall of the positioning groove, thereby improving the stability of the clamping of the inner ring by the movable positioning block and the fixed positioning block.
[0013] Optionally, the limiting component further includes a second screw, and the end face of the support rod is provided with a second threaded hole for the second screw to be threadedly connected. The axis of the second threaded hole coincides with the axis of the first threaded hole. The second threaded hole is connected to a positioning groove. The end face of the fixed positioning block facing the second threaded hole is provided with a second threaded groove. The end of the second screw passes through the second threaded hole and is threaded and tightened to the inner wall of the second threaded groove to form a fixation.
[0014] By adopting the above technical solution, when the fixed positioning block is embedded in the limiting groove, the second threaded hole connects to the second threaded groove, and the end of the second screw passes through the second threaded hole and is screwed and fixed to the inner wall of the second threaded groove to form a fixation, thereby realizing the detachable connection between the fixed positioning block and the support rod body, which facilitates the replacement of the fixed positioning block and thus extends the service life of the machining tooling for the inner ring of the spherical bearing.
[0015] Optionally, the inner wall of the threaded hole is provided with a clearance hole to accommodate the end of the screw.
[0016] By adopting the above technical solution, the avoidance hole shields the end of the screw, making the screw less susceptible to external impact and thus improving the stability of the clamping between the movable positioning block and the inner ring.
[0017] Optionally, the inner wall of the second threaded hole is provided with a second clearance hole to accommodate the ends of the second screw.
[0018] By adopting the above technical solution, the two ends of the screw are covered by the avoidance hole, making the screw less likely to rotate due to external impact, thereby improving the fixing stability between the fixing positioning block and the support rod.
[0019] Optionally, the movable positioning block has a matching arc groove on its end face facing the fixed positioning block, and the inner wall of the matching arc groove abuts against the outer circumferential surface of the inner ring to form a limit.
[0020] By adopting the above technical solution, when the movable positioning block slides along the inner wall of the positioning groove toward the inner ring, the inner wall of the matching arc groove abuts against the outer circumference of the inner ring to form a limit, making it difficult for the inner ring to detach from the movable positioning block, thereby improving the clamping force between the movable positioning block and the inner ring.
[0021] Optionally, the fixed positioning block has a fixed arc groove on its end face facing the movable positioning block, and the inner wall of the fixed arc groove abuts against the outer circumferential surface of the inner ring to form a limit.
[0022] By adopting the above technical solution, when the inner ring is embedded in the positioning groove, the inner wall of the fixed arc groove abuts against the outer circumference of the inner ring to form a limit, making it difficult for the inner ring to detach from the fixed positioning block, thereby improving the stability of the clamping of the inner ring by the fixed positioning block and the movable positioning block.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. With the setting of fixed positioning blocks and movable positioning blocks, the universal outer ring grinding machine grinds both sides of the inner ring to form a ring, realizing the simultaneous processing of the ring on both sides of the inner ring. This eliminates the need for multiple processing of the inner ring ring, improves the processing efficiency of the inner ring, shortens the processing cycle of the inner ring, and thus reduces the processing cost of the inner ring.
[0025] 2. The double-ejector design prevents the support rod from shifting during the inner ring grinding process, thereby improving the machining accuracy of the inner ring;
[0026] 3. The setting of screw one, the movable positioning block and the fixed positioning block clamp the two sides of the inner ring to form a limit, so that the movable positioning block is not easy to deviate in the inner wall of the positioning groove, thereby improving the stability of the movable positioning block and the fixed positioning block clamping the inner ring. Attached Figure Description
[0027] Figure 1 This is a cross-sectional view of the inner ring of a bearing in the prior art.
[0028] Figure 2 This is a schematic diagram of the overall structure of the inner ring of a bearing in the prior art.
[0029] Figure 3 This is a schematic diagram of the overall structure in an embodiment of this application.
[0030] Figure 4 This is a cross-sectional view of an embodiment of this application, mainly showing the limiting component.
[0031] Explanation of reference numerals in the attached drawings: 1. Support rod body; 11. Positioning groove; 12. Threaded hole one; 13. Threaded hole two; 14. Threaded groove two; 15. Threaded groove one; 16. Clearance hole one; 17. Clearance hole two; 2. Limiting component; 21. Fixed positioning block; 211. Fixed arc groove; 22. Movable positioning block; 221. Matching arc groove; 23. Screw one; 24. Screw two; 3. Inner ring; 31. Ring band. Detailed Implementation
[0032] The following is in conjunction with the appendix Figure 2-4 This application will be described in further detail.
[0033] This application discloses a machining fixture for the inner ring of a spherical plain bearing. (Refer to...) Figure 2 and Figure 3 A machining fixture for the inner ring band of a spherical bearing includes a universal cylindrical grinding machine, a support rod 1, and a limiting component 2. In this embodiment, the outer diameter of the support rod is equal to the rotation diameter of the ring band 31. A positioning groove 11 for the inner ring 3 to be embedded is formed on the surface of the support rod 1. The positioning groove 11 penetrates the outer wall of the support rod 1. The limiting component 2 is installed in the positioning groove 11 and can clamp and fix the inner ring 3 in the positioning groove 11. The universal cylindrical grinding machine is equipped with double ejector pins, which can press and fix the support rod 1 on the universal cylindrical grinding machine. The universal cylindrical grinding machine grinds both sides of the inner ring 3 to form the ring band 31, realizing the simultaneous processing of the ring band 31 on both sides of the inner ring 3. It eliminates the need to process the inner ring 3 ring track in multiple stages, improves the processing efficiency of the inner ring 3, shortens the processing cycle of the inner ring 3, and thus reduces the processing cost of the inner ring 3.
[0034] Reference Figure 2 and Figure 4The limiting component 2 includes a fixed positioning block 21, a movable positioning block 22, a first screw 23, and a second screw 24. One end of the support rod 1 has a threaded hole 12 coaxially formed for the first screw 23 to pass through, and the threaded hole 12 connects to the positioning groove 11. The other end of the support rod 1 has a threaded hole 13 coaxially formed for the second screw 24 to pass through, and the threaded hole 13 connects to the positioning groove 11. The fixed positioning block 21 and the movable positioning block 22 are embedded in the limiting groove, with the fixed positioning block 21 close to the threaded hole 13. The movable positioning block 22 is close to the threaded hole 12. The fixed positioning block 21 has a threaded groove 14 on its end face facing the threaded hole 13. The end of the screw 24 passes through the threaded hole 12 and is screwed and fixed to the inner wall of the threaded groove 14. This drives the end face of the fixed positioning block 21 to press against the inner wall of the positioning groove 11 to form a limit, thereby realizing the quick installation of the fixed positioning block 21 and the support rod 1. This facilitates the replacement of the fixed positioning block 21 without having to replace the entire support rod 1, reducing material consumption and thus embodying the concept of energy saving.
[0035] Reference Figure 2 and Figure 4 The movable positioning block 22 has a threaded groove 15 on its end face facing the threaded hole 12. The screw 23 passes through the threaded hole 12 and is screwed and fixed to the inner wall of the threaded hole 12. When the inner ring 3 is embedded in the positioning groove 11, the screw 23 is driven to rotate in the inner wall of the threaded hole 12, which drives the movable positioning block 22 to slide along the inner wall of the limiting groove. The movable positioning block 22 and the fixed positioning block 21 clamp the two sides of the inner ring 3 to form a limit, so that the inner ring 3 is not easy to deviate in the limiting groove, thereby improving the limiting stability of the inner ring 3 in the positioning groove 11.
[0036] Reference Figure 2 and Figure 4 The movable positioning block 22 has a matching arc groove 221 on its end face facing the fixed positioning block 21. The inner wall of the matching arc groove 221 is flared in the direction close to the axis of the support rod 1. The fixed positioning block 21 has a fixed arc groove 211 on its end face facing the movable positioning block 22. The inner wall of the fixed arc groove 211 is flared in the direction close to the axis of the support rod. When the movable positioning block 22 and the fixed positioning block 21 clamp the two sides of the inner ring 3, the inner walls of the fixed arc groove 211 and the matching arc groove 221 clamp the two sides of the inner ring 3 to form a limit, making it difficult for the inner ring 3 to fall out of the positioning groove 11, thereby further improving the limiting stability of the inner ring 3 in the positioning groove 11.
[0037] Reference Figure 2 and Figure 4The inner wall of threaded hole 12 away from the positioning groove 11 is provided with a clearance hole 16 to accommodate the end of screw 23, and the inner wall of threaded hole 13 away from the positioning groove 11 is provided with a clearance hole 27 to accommodate the end of screw 24. Screw 23 is located in clearance hole 16 and screw 24 is located in clearance hole 27, so that screw 23 and screw 24 are not easily rotated by external impact, thereby improving the stability of the clamping of the inner ring 3 by the fixed positioning block 21 and the movable positioning block 22.
[0038] The implementation principle of the machining fixture for the inner ring band of a spherical bearing according to an embodiment of this application is as follows: When machining the inner ring band 31, the inner ring 3 is embedded in the positioning groove 11, driving the screw 23 to rotate on the inner wall of the threaded hole 12, which in turn drives the movable positioning block 22 to slide along the inner wall of the limiting groove. The movable positioning block 22 and the fixed positioning block 21 clamp the two sides of the inner ring 3 to form a limit, making it less likely for the inner ring 3 to shift in the limiting groove, thereby improving the limiting stability of the inner ring 3 in the positioning groove 11; the double ejector pins can press and fix the support rod 1 on the universal cylindrical grinding machine, and the universal cylindrical grinding machine grinds the two sides of the inner ring 3 to form the band 31, realizing the simultaneous machining of the band 31 on both sides of the inner ring 3 without the need for special equipment, thereby improving the equipment utilization rate, eliminating the need for multi-stage machining of the inner ring 3, improving the machining efficiency of the inner ring 3, shortening the machining cycle of the inner ring 3, and thus reducing the machining cost of the inner ring 3.
[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A machining tool for a ring belt of an inner ring of a knuckle bearing, characterized by: The utility external cylindrical grinding machine comprises a support rod body (1) and a limiting assembly (2), a positioning groove (11) is formed in the surface of the support rod body (1) and is used for embedding an inner ring (3), the positioning groove (11) penetrates through the outer wall of the support rod body (1), the limiting assembly (2) comprises a fixed positioning block (21) and a movable positioning block (22), the fixed positioning block (21) is connected to the inner wall of the positioning groove (11), the movable positioning block (22) is slidably connected to the inner wall of the positioning groove (11), the sliding direction of the movable positioning block (22) is parallel to the axis of the support rod body (1), when the movable positioning block (22) slides along the inner wall of the positioning groove (11) towards the fixed positioning block (21), the fixed positioning block (21) and the movable positioning block (22) clamp the inner ring (3) to form limiting on both sides of the inner ring (3), and the utility external cylindrical grinding machine grinds and processes both sides of the inner ring (3) to form a ring belt (31).
2. The processing tooling for the inner ring band of a knuckle bearing according to claim 1, characterized in that: The utility external cylindrical grinding machine is connected with double top pins, and the double top pins tightly fix the support rod body (1) on the utility external cylindrical grinding machine.
3. The processing tooling for the inner ring band of a knuckle bearing according to claim 1, wherein: The limiting assembly (2) further comprises a screw (23), a threaded hole (12) is formed in the end surface of the support rod body (1) and is used for threadedly connecting the screw (23), the axis of the threaded hole (12) is parallel to the sliding direction of the movable positioning block (22), the threaded hole (12) is connected to the positioning groove (11), a threaded groove (15) is formed in the end surface of the movable positioning block (22) and faces the threaded hole (12), the end of the screw (23) penetrates through the threaded hole (12) and is threadedly fixed in the inner wall of the threaded groove (15), and when the screw (23) rotates in the inner wall of the threaded hole (12), the movable positioning block (22) is driven to move close to the inner ring (3).
4. The processing tooling for a ring belt of an inner ring of a knuckle bearing according to claim 3, characterized in that: The limiting assembly (2) further comprises a screw (24), a threaded hole (13) is formed in the end surface of the support rod body (1) and is used for threadedly connecting the screw (24), the axis of the threaded hole (13) coincides with the axis of the threaded hole (12), the threaded hole (13) is connected to the positioning groove (11), a threaded groove (14) is formed in the end surface of the fixed positioning block (21) and faces the threaded hole (13), and the end of the screw (24) penetrates through the threaded hole (13) and is threadedly fixed in the inner wall of the threaded groove (14) to form fixing.
5. The processing tool for the inner ring band of the knuckle bearing according to claim 3, wherein: An avoiding hole (16) is formed in the inner wall of the threaded hole (12) and is used for accommodating the end of the screw (23).
6. The processing tool for a ring belt of an inner ring of an articulating bearing according to claim 4, characterized in that: An avoiding hole (17) is formed in the inner wall of the threaded hole (13) and is used for accommodating the end of the screw (24).
7. The processing tool for the inner ring band of the knuckle bearing according to claim 1, wherein: A matching arc groove (221) is formed in the end surface of the movable positioning block (22) and faces the fixed positioning block (21), and the inner wall of the matching arc groove (221) abuts against the outer circumferential surface of the inner ring (3) to form limiting.
8. The processing tool for the inner ring band of the knuckle bearing according to claim 1, wherein: A fixed arc groove (211) is formed in the end surface of the fixed positioning block (21) and faces the movable positioning block (22), and the inner wall of the fixed arc groove (211) abuts against the outer circumferential surface of the inner ring (3) to form limiting.