Gear ring positioning tool
By designing a gear ring positioning fixture, which employs structures such as threaded holes, centering holes, and guide angles, the problems of low positioning accuracy and bulky fixtures in traditional gear ring inspection are solved. This achieves high-precision and simple gear ring positioning and inspection, making it suitable for mass production.
Patent Information
- Application Number
- CN202520425621.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Traditional gear ring inspection suffers from low positioning accuracy, long adjustment time, bulky and inconsistent tooling, resulting in poor guidance of inspection data, affecting processing and assembly efficiency, and making it difficult to guarantee product quality.
A gear ring positioning fixture was designed, including a gear ring component, a base, and a mandrel. Through structural designs such as threaded holes, centering holes, weight reduction holes, and guide angles, high-precision positioning and easy operation are achieved. The base and mandrel can be quickly replaced, a unified positioning reference is established, and the accuracy of the test data is improved.
It improves the positioning accuracy and ease of operation of gear rings, unifies positioning, inspection and assembly benchmarks, is suitable for mass production, reduces the weight of tooling and the difficulty of disassembly and assembly, and improves the efficiency of processing and inspection.
Smart Images
Figure CN223889821U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of positioning tooling technology, and in particular to gear ring positioning tooling. Background Technology
[0002] Traditional gear ring inspection often uses general-purpose fixtures (such as three-jaw chucks or manual positioning devices), which have problems such as low positioning accuracy, long adjustment time, and bulky and inconvenient tooling disassembly. Moreover, the positioning fixtures lack unified inspection benchmarks, machining clamping benchmarks, and assembly and use benchmarks, resulting in poor guidance for use based on inspection data. This not only affects machining and assembly efficiency, but also makes it difficult to detect the good quality of the product in use in advance, leading to noise risks and wasted costs. To solve the above problems, a gear ring positioning fixture was designed. Utility Model Content
[0003] This utility model aims to at least partially solve one of the technical problems in the related art. Therefore, one objective of this utility model is to propose a gear ring positioning fixture, providing a gear ring positioning fixture that is simple in structure, easy to assemble and disassemble, has high positioning accuracy, and is highly operable, making it suitable for both processing and inspection, thus solving the problems of inconsistent positioning references and low assembly / disassembly efficiency in the prior art.
[0004] According to the present invention, a gear ring positioning fixture includes a gear ring component, the surface of which is provided with a threaded hole, a base is fixed to the surface of the gear ring component, and a mandrel is fitted and fixed at the center of the base.
[0005] The base has a centering hole that mates with the mandrel on its surface. The base has a plurality of mandrel mounting holes arranged in a circular array around the centering hole. The base has a plurality of weight-reducing holes arranged in a circular array around the plurality of mandrel mounting holes. The base has a plurality of gear ring mounting holes arranged in a circular array around the plurality of weight-reducing holes.
[0006] Both ends of the mandrel are provided with top holes, and the surface of the mandrel is provided with a mating ring. The surface of the mating ring is provided with multiple bolt mounting holes in a circular array.
[0007] Preferably, the sidewall of the base has a first radial positioning surface that mates with the inner ring of the gear ring component.
[0008] Preferably, the surface of the mandrel is provided with a second radial positioning surface that mates with the centering hole, and the surface of the second radial positioning surface is provided with a guide angle.
[0009] Preferably, the sidewall of the base has a cut surface.
[0010] Preferably, a first bolt is fixed between the gear ring and the base, and the first bolt passes through the gear ring mounting hole and the threaded hole.
[0011] Preferably, a second bolt is fixed between the base and the mandrel, the second bolt passing through the mandrel mounting hole and the bolt mounting hole.
[0012] The beneficial effects of this utility model are:
[0013] 1. The spindle and base are integrated for mounting, which improves the versatility of the spindle. Different sizes of gear rings can be obtained by simply replacing the base with a different specification.
[0014] 2. The positioning datum for the final grinding of the gear ring, the inspection datum, and the assembly datum during use are unified, which facilitates the control of processing quality and improves the accuracy of the inspection data for the guidance of use. 3. The base is designed with weight-reducing holes and guide angles, making it lightweight, rigid, easy to operate, and suitable for mass production scenarios. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the assembly structure of the gear ring positioning fixture proposed in this utility model.
[0016] Figure 2 This is a cross-sectional view of the assembly structure of the gear ring positioning fixture proposed in this utility model.
[0017] Figure 3 This is a schematic diagram of the base mandrel mounting structure of the gear ring positioning fixture proposed in this utility model.
[0018] Figure 4 This is a schematic diagram of the base structure of the gear ring positioning fixture proposed in this utility model.
[0019] Figure 5 This is a schematic diagram of the mandrel structure of the gear ring positioning fixture proposed in this utility model.
[0020] In the diagram: 1. Base; 11. Gear ring mounting hole; 12. First radial positioning surface; 13. Weight reduction hole; 14. Guide angle; 15. Centering hole; 16. Cross-section; 17. Mandrel mounting hole; 2. Mandrel; 21. Bolt mounting hole; 22. Second radial positioning surface; 23. Top hole; 24. Connecting ring; 31. First bolt; 32. Second bolt. Detailed Implementation
[0021] Reference Figure 1-5 A gear ring positioning fixture includes a gear ring component, the surface of which is provided with threaded holes, a base 1 is fixed to the surface of the gear ring component, and a spindle 2 is fitted and fixed to the center of the base 1.
[0022] The surface of the base 1 is provided with a centering hole 15 that mates with the spindle 2. The surface of the base 1 and the periphery of the centering hole 15 are provided with a plurality of spindle mounting holes 17 in a circular array. The surface of the base 1 and the periphery of the plurality of spindle mounting holes 17 are provided with a plurality of weight reduction holes 13. The purpose is to reduce the weight of the base 1 without changing the thickness of the base 1 and without reducing the rigidity. The surface of the base 1 and the periphery of the plurality of weight reduction holes 13 are provided with a plurality of gear ring mounting holes 11 in a circular array.
[0023] Both ends of the mandrel 2 are provided with top holes 23. When the testing instrument tests or the machine tool processes the gear ring, the machine's ejector pin presses against the top holes 23 to achieve axial positioning. At the same time, the workpiece being tested can rotate along its own axis, which is convenient for processing or testing each tooth surface. The surface of the mandrel 2 is provided with a docking ring 24. The surface of the docking ring 24 is provided with multiple bolt mounting holes 21 in a circular array. The mandrel 2 is an integral structure, and the docking ring 24 and the second radial positioning surface 22 are integrally formed on the mandrel 2.
[0024] The side wall of the base 1 has a first radial positioning surface 12 that mates with the inner ring of the gear ring component.
[0025] The surface of the spindle 2 is provided with a second radial positioning surface 22 that mates with the centering hole 15. The surface of the second radial positioning surface 22 is provided with a guide angle 14 to improve assembly efficiency and enable quick replacement.
[0026] The side wall of the base 1 has a cut surface 16, which reduces the mating length between the positioning circumference of the base 1 and the gear ring. On the one hand, it reduces the weight of the base 1 and makes manual operation easier to replace. On the other hand, reducing the mating length makes disassembly and assembly easier and improves assembly efficiency.
[0027] A first bolt 31 is fixed between the gear ring and the base 1. The first bolt 31 passes through the gear ring mounting hole 11 and the threaded hole.
[0028] A second bolt 32 is fixed between the base 1 and the spindle 2, and the second bolt 32 passes through the spindle mounting hole 17 and the bolt mounting hole 21.
[0029] When using this device, the base 1 of appropriate specifications and the mandrel 2 are fastened together by the second screw. During the fastening process, the mandrel 2 is aligned with the centering hole 15 of the base 1, and the second radial positioning surface 22 contacts the inner wall of the centering hole 15. The mandrel 2 is rotated to align the mandrel mounting hole 17 and the bolt mounting hole 21, and the second screw is threaded to achieve the fastening connection between the base 1 and the mandrel 2. The gear ring is positioned and installed as a whole tooling unit. The inner hole of the gear ring is fitted onto the corresponding first radial positioning surface 12 of the base 1. The whole tooling unit is rotated so that the gear ring mounting hole 11 is rotated to the corresponding threaded hole position of the gear ring. The first bolt 31 is threaded to achieve the fastening connection between the whole tooling unit and the gear ring.
Claims
1. A gear ring positioning fixture, comprising a gear ring component, wherein the surface of the gear ring component is provided with a threaded hole, characterized in that: A base is fixed to the surface of the gear ring, and a spindle is fitted and fixed to the center of the base; The base has a centering hole that mates with the mandrel on its surface. The base has a plurality of mandrel mounting holes arranged in a circular array around the centering hole. The base has a plurality of weight-reducing holes arranged in a circular array around the plurality of mandrel mounting holes. The base has a plurality of gear ring mounting holes arranged in a circular array around the plurality of weight-reducing holes. Both ends of the mandrel are provided with top holes, and the surface of the mandrel is provided with a mating ring. The surface of the mating ring is provided with multiple bolt mounting holes in a circular array.
2. The gear ring positioning fixture according to claim 1, characterized in that: The base has a first radial positioning surface on its side wall that mates with the inner ring of the gear ring component.
3. The gear ring positioning fixture according to claim 1, characterized in that: The surface of the mandrel is provided with a second radial positioning surface that mates with the centering hole, and the surface of the second radial positioning surface is provided with a guide angle.
4. The gear ring positioning fixture according to claim 1, characterized in that: The sidewall of the base has a cut surface.
5. The gear ring positioning fixture according to claim 1, characterized in that: A first bolt is fixed between the gear ring and the base, and the first bolt passes through the gear ring mounting hole and the threaded hole.
6. The gear ring positioning fixture according to claim 1, characterized in that: A second bolt is fixed between the base and the mandrel, and the second bolt passes through the mandrel mounting hole and the bolt mounting hole.