Centering locking center
Through the top-notch design of centering lock, the problem of poor precision of the gear clamping in the gear grinding process is solved, and the stable fixation and accuracy of the gear are achieved, simplified operation and reduced costs.
Patent Information
- Application Number
- CN202422305637.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-23
AI Technical Summary
In the existing gear grinding process, due to the special product structure and poor precision of the set clamp, the gear cannot be effectively fixed, resulting in insufficient accuracy of the center hole and inner hole, which affects the processing quality.
A centering locking top is designed, through the top tip tightening the center hole of the gear, the slide plate drives the swing arm to self-center and clamp the workpiece, combining the return spring and limiting structure to achieve stable fixation of the workpiece.
It improves gear processing quality, simplifies operating procedures, reduces costs, improves clamping efficiency, and ensures the accuracy of the center and inner holes.
Smart Images
Figure CN223083935U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gear processing, in particular to a centering and locking center. Background Art
[0002] When grinding gears, for some gears with special product structures, there is no clamping position to fix the workpiece rotation. The power transmission processing method uses an expansion sleeve to clamp. There are certain errors between the inner hole and the center hole of the workpiece. Therefore, the clamping accuracy of the expansion sleeve is poor, which is not conducive to improving product quality. For the existing center devices, only relying on the downward pressure generated by the screw to press the center hole of the workpiece through the center to press the workpiece, it cannot produce a good fixing effect on the gear, and at the same time, it cannot guarantee the accuracy of the inner hole and the center hole. Summary of the Invention
[0003] In order to overcome the deficiencies in the prior art, the utility model provides a centering and locking center, including a fixed seat. A screw is arranged at the left end of the fixed seat. A gland is fixedly installed at the right end of the fixed seat. A spring groove and a center groove are arranged in the fixed seat. A spring is installed in the spring groove. A center is arranged in the center groove. The gland is provided with a center hole for the right end of the center to pass through. The center is provided with a boss and a groove connected to the boss. A slide plate that can slide left and right thereon is arranged at the groove. A swing arm is also installed in the fixed seat through a pin. The gland and the slide plate are respectively provided with swing arm holes for the swing arm to pass through. The swing arm hole on the slide plate is inclined.
[0004] In order to facilitate the reset of the slider and at the same time facilitate the contraction of the swing arm for removing the workpiece, the gland is provided with a bolt hole. A bolt is arranged in the bolt hole. The other end of the bolt is connected to the fixed seat. The slide plate is provided with a hole for the bolt to pass through. A return spring is arranged on the bolt. The return spring is located between the fixed seat and the slide plate.
[0005] In order to effectively limit the stroke of the center, the diameter of the spring groove is smaller than that of the center groove.
[0006] In order to better limit the center, a boss groove for accommodating the boss is arranged on the inner surface of the gland.
[0007] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0008] 1. When the utility model works, the center tightens the center hole of the gear, and the slide plate drives the swing arm to self-center and clamp the work, avoiding the problem of out-of-tolerance runout between the center hole and the inner hole caused by the deformation of the inner hole of the heat-treated workpiece, which is conducive to improving the processing quality of the product.
[0009] 2. The boss on the center tightens the slide plate to drive the swing arm to automatically clamp the workpiece, simplifies the operation action, and improves the clamping efficiency of the workpiece.
[0010] 3. The structure of the utility model is simple and the cost is low, which is conducive to popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 is a schematic structural view of the utility model.
[0012] Figure 2 is a schematic structural view of the utility model for clamping a workpiece.
[0013] Figure 3 is a schematic structural view of the gland.
[0014] In the figure: screw 1, spring 2, center point 3, fixed seat 4, swing arm 7, boss 8, bolt 9, gland 10, return spring 11, slide plate 12, workpiece 13, center point hole 14, swing arm hole 15, bolt hole 16, center point groove 17, spring groove 18, groove 19, boss groove 20. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] Hereinafter, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0016] In Figures 1 to 3 a centering and locking center point includes a fixed seat 4. A screw 1 is provided at the left end of the fixed seat 4. A gland 10 is fixedly installed at the right end of the fixed seat 4. A spring groove 18 and a center point groove 17 are provided in the fixed seat 4. A spring 2 is installed in the spring groove 18. A center point 3 is provided in the center point groove 17. A center point hole 14 for the right end of the center point 3 to pass through is provided on the gland 10. A boss 8 and a groove 19 connected to the boss 8 are provided on the center point 3. A slide plate 12 that can slide left and right thereon is provided at the groove 19. A swing arm 5 is also installed in the fixed seat 4 through a pin 5. Swing arm holes 15 for the swing arm 7 to pass through are respectively provided on the slide plate 12 and the gland 10. The swing arm hole on the slide plate 12 is inclined.
[0017] By adopting the above technical solution, when the center point 3 abuts against the center hole of the workpiece 13, the boss 8 drives the slide plate 12 to move leftward. Since the swing arm hole on the slide plate 12 for the swing arm 7 to transmit power is inclined, the slide plate 12 will drive the swing arm 7 to open outward, and then contact and clamp the inner hole of the workpiece 13.
[0018] Further, bolt holes 16 are provided on the gland 10. Bolts 9 are arranged in the bolt holes 16. The other ends of the bolts 9 are connected to the fixed seat 4. Holes for the bolts 9 to pass through are provided on the sliding plate 12. A return spring 11 is arranged on the bolts 9. The return spring is located between the fixed seat 4 and the sliding plate 12.
[0019] By adopting the above technical solution, through the arrangement of the return spring 11, when the center point 3 releases the workpiece 13, the return spring 11 pushes the sliding plate 12 to move rightward, thereby driving the swing arm 7 to contract, facilitating the removal of the workpiece 13.
[0020] Further, the diameter of the spring groove 18 is smaller than that of the center point groove 17.
[0021] By adopting the above technical solution, it is possible to effectively control the stroke of the center point 3 and prevent the center point 3 from exerting a large pressure on the spring 2 when clamping the workpiece, which can effectively extend the service life of the spring.
[0022] Further, a boss groove 20 for accommodating the boss 8 is provided on the inner surface of the gland 10.
[0023] By adopting the above technical solution, the center point 3 can be limited and the stability of the center point 3 can be better during operation.
[0024] During operation, the screw rod 1 is connected to the machine tool. When the center point 3 abuts against the center hole of the workpiece 13 during use, under the action of the hydraulic clamping force of the machine tool, the center point 3 moves leftward. The boss 8 drives the sliding plate 12 to move leftward. The swing arm hole on the sliding plate 12 pushes the swing arm 7 to clamp the workpiece.
[0025] Under the hydraulic action of the machine tool, the center point 3 abuts against the center hole of the workpiece. The pressure causes the center point 3 to retreat. There is a groove 19 between the sliding plate 12 and the center point 3. When the inner hole of the workpiece 13 is not concentric with the center hole, when the swing arm 7 contacts the inner hole, it generates displacement and automatic centering under the action of the force. The center point 3 stops moving when the swing arm clamps the workpiece, ensuring that when the center point 3 abuts against the center hole of the workpiece, the swing arm 7 clamps the workpiece, and there will be no interference due to the non - concentricity between the center hole and the inner hole of the workpiece.
[0026] After the machining is completed and the center point retracts, at this time, the return spring 11 pushes the sliding plate to move rightward, driving the swing arm 7 to move and contract, releasing the workpiece.
[0027] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.
Claims
1. A centering and locking center, comprising a fixed seat (4), and a screw rod (1) is arranged at the left end of the fixed seat (4), and is characterized in that: A gland (10) is fixedly installed at the right end of the fixed seat (4). A spring groove (18) and a center hole groove (17) are provided in the fixed seat (4). A spring (2) is installed in the spring groove (18), and a center hole (3) is provided in the center hole groove (17). The gland (10) is provided with a center hole (14) for the right end of the center hole (3) to pass through. The center hole (3) is provided with a boss (8) and a groove (19) connected to the boss (8). A slide plate (12) that can slide left and right thereon is provided at the groove (19). A swing arm (7) is also installed in the fixed seat (4) through a pin (5). The slide plate (12) and the gland (10) are respectively provided with swing arm holes (15) for the swing arm (7) to pass through. The swing arm hole on the slide plate (12) is inclined.
2. The centering and locking center according to claim 1, characterized in that: The gland (10) is provided with a bolt hole (16). A bolt (9) is provided in the bolt hole (16). The other end of the bolt (9) is connected to the fixed seat (4). The slide plate (12) is provided with a hole for the bolt (9) to pass through. A return spring (11) is provided on the bolt (9). The return spring is located between the fixed seat (4) and the slide plate (12).
3. A centering and locking center, according to claim 1, characterized in that: The diameter of the spring groove (18) is smaller than that of the center hole groove (17).
4. A centering and locking center as claimed in claim 1, wherein: The inner surface of the gland (10) is provided with a boss groove (20) for accommodating the boss (8).