Inner hole grinding tool
By designing a grinding inner hole tool for thin-walled ring parts of new energy active pump wheel, the deformation and accuracy problems during processing of thin-walled ring parts are solved by combining the annular base and the pressure gland, and low-cost and high-efficiency The processing solution is suitable for small batch trial production.
Patent Information
- Application Number
- CN202421092991.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The thin-wall ring parts of the new energy active pump wheel are weak in processing and are prone to deformation. The existing workmanship costs are high and the production cycle is long, making it difficult to adapt to small batch trial production.
Design a grinding inner hole tooling, including an annular base and a gland, connected by screws and elastic parts, to ensure stable positioning and accuracy of the workpiece during processing, suitable for lathes and grinders.
It improves the accuracy of the inner hole processing of thin-walled annular parts, reduces the cost of work and production cycle, is suitable for small batch sample trial production, and enhances flexibility.
Smart Images
Figure CN222269897U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of mechanical processing, and in particular relates to an inner hole grinding tool. Background Art
[0002] The general method of machining the inner hole of a flat gear is to clamp the outer circle and then machine the inner hole. However, the new energy active pump wheel is a thin-walled annular part with weak rigidity, large deformation during machining, and easy stress release. Therefore, it is impossible to clamp the outer circle directly. There are special hydraulic tooling or equipment for machining such workpieces in the industry, but such tooling and equipment are expensive and have a long production cycle, which is not easy to use for small batch trial production of samples. Utility Model Content
[0003] In view of this, an object of the present invention is to provide an inner hole grinding tool for overcoming the above problems or at least partially solving or alleviating the above problems.
[0004] The utility model provides an inner hole grinding tool for grinding the inner hole of a thin-walled annular part, comprising:
[0005] A base, the base is annular, an annular step surface is provided at one end of the front side of the base, the inner diameter of the base is larger than the inner hole diameter of the thin-walled annular member, the diameter of the annular step surface matches the outer contour diameter of the thin-walled annular member, and a plurality of threaded holes are also circumferentially distributed at one end of the front side of the base;
[0006] A gland, the gland is annular, the inner diameter of the gland is larger than the inner hole diameter of the thin-walled annular member, the inner diameter of the gland is smaller than the diameter of the annular step surface, a plurality of connection holes are circumferentially arranged on the end surface of the gland, and each of the connection holes is aligned with one of the threaded holes;
[0007] A plurality of screws are provided, each of which is used to connect the gland and the base together, and an elastic member is provided between each of the screws and the gland.
[0008] The utility model also has the following optional features.
[0009] Optionally, the screw is a butterfly screw.
[0010] Optionally, a gasket is further provided between the elastic member and the gland.
[0011] Optionally, the diameter of the annular step surface is 0.3-0.7 mm larger than the outer diameter of the thin-walled annular member.
[0012] Optionally, the diameter of the annular step surface is 0.5 mm larger than the outer diameter of the thin-walled annular member.
[0013] Beneficial effects of the utility model:
[0014] The inner hole grinding tool of the utility model is realized by installing a thin-walled annular part into the annular step surface of the base, and then pressing the thin-walled annular part by connecting the pressure cover, so that the chuck of the grinding machine clamps the base to process the inner hole of the thin-walled annular part. The annular step surface can prevent the workpiece from deformation and shaking during processing, and will not cause misalignment of the end face, which solves the problem of excessive machining accuracy of the inner hole of the thin-walled part of the new energy active pump wheel, can meet the subsequent processing requirements, and greatly reduces the tooling cost and production cycle, has great flexibility, can be adapted to lathes and grinders, and is convenient for small batch sample trial production. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a cross-sectional view of the overall structure of the inner hole grinding tooling of the utility model.
[0016] In the above figure: 1. thin-walled annular part; 2. base; 3. annular step surface; 4. threaded hole; 5. gland; 6. connecting hole; 7. screw; 8. elastic part; 9. gasket.
[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; DETAILED DESCRIPTION
[0018] Example 1
[0019] refer to Figure 1 The embodiment of the utility model proposes an inner hole grinding tool for grinding the inner hole of a thin-walled annular part 1, comprising: a base 2, a pressure cover 5 and a plurality of screws 7; the base 2 is annular, and an annular step surface 3 is arranged at one end of the front side of the base 2, the inner diameter of the base 2 is larger than the inner hole diameter of the thin-walled annular part 1, the diameter of the annular step surface 3 matches the outer contour diameter of the thin-walled annular part 1, and a plurality of threaded holes 4 are also circumferentially distributed at one end of the front side of the base 2; the pressure cover 5 is annular, the inner diameter of the pressure cover 5 is larger than the inner hole diameter of the thin-walled annular part 1, the inner diameter of the pressure cover 5 is smaller than the diameter of the annular step surface 3, and a plurality of connecting holes 6 are circularly symmetrically arranged on the end surface of the pressure cover 5, and each connecting hole 6 is respectively aligned with a threaded hole 4; each screw 7 is used to connect the pressure cover 5 and the base 2 together, and an elastic member 8 is also set between each screw and the pressure cover 5.
[0020] When in use, the base 2 is first clamped on the chuck of the lathe, and then the thin-walled annular part 1 is installed into the annular step surface 3 of the base 2, and then the pressure cover 5 is connected to the base 2 using multiple screws 7 with elastic parts 8, and each screw 7 is tightened to make the pressure cover 5 uniformly press the thin-walled annular part 1, and then the inner hole of the thin-walled annular part 1 can be processed by the grinder. Among them, the clamping force of the pressure cover 5 on the thin-walled annular part 1 cannot be too large, and it needs to be buffered by the elastic part 8, and the elastic part 8 adopts a spring gasket or a linear spring; when the clamping force is too large, the deformation of the thin-walled annular part 1 after processing will increase due to stress release, and it is difficult to meet the precision requirements; when the clamping force is too small, the end face of the workpiece cannot be well positioned, the precision is low and there is a processing risk.
[0021] Example 2
[0022] refer to Figure 1 , based on Example 1, the screw 7 is a butterfly screw.
[0023] The screw 7 is a butterfly screw, which is convenient for the processing personnel to directly tighten the tooling without using tightening tools such as wrenches, and at the same time ensures that the clamping force of the pre-tooling on the workpiece is not too large.
[0024] Example 3
[0025] refer to Figure 1 On the basis of embodiment 1, a gasket 9 is further provided between the elastic member 8 and the gland 5 .
[0026] The gasket 9 is used to prevent the end of the elastic member 8 from scratching the gland 5 .
[0027] Example 4
[0028] refer to Figure 1 On the basis of Example 1, the diameter of the annular step surface 3 is 0.3-0.7 mm larger than the outer diameter of the thin-walled annular part 1 .
[0029] The inner wall of the annular step surface 3 is in clearance with the outer circle of the thin-walled annular part 1. In order to prevent deformation and large end jump during workpiece processing, the diameter of the annular step surface 3 should be 0.3-0.7mm larger than the outer diameter of the thin-walled annular part 1.
[0030] Example 5
[0031] refer to Figure 1 On the basis of Example 4, the diameter of the annular step surface 3 is 0.5 mm larger than the outer diameter of the thin-walled annular part 1 .
[0032] Through practice, the diameter of the annular step surface 3 is 0.5 mm larger than the outer diameter of the thin-walled annular part 1, which is the optimal gap size.
[0033] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims. The components and structures not described in detail in this embodiment are well-known components and common structures or common means in the industry, and are not described here one by one.
Claims
1. An inner hole grinding tool for grinding the inner hole of a thin-walled annular part (1), characterized in that: include: A base (2), the base (2) is annular, a front end of the base (2) is provided with an annular step surface (3), the inner diameter of the base (2) is larger than the inner hole diameter of the thin-walled annular component (1), the diameter of the annular step surface (3) matches the outer contour diameter of the thin-walled annular component (1), and a plurality of threaded holes (4) are also circumferentially provided at the front end of the base (2); A gland (5), the gland (5) is annular, the inner diameter of the gland (5) is larger than the inner diameter of the thin-walled annular member (1), the inner diameter of the gland (5) is smaller than the diameter of the annular step surface (3), a plurality of connecting holes (6) are circularly symmetrically arranged on the end surface of the gland (5), and each of the connecting holes (6) is aligned with one of the threaded holes (4); A plurality of screws (7), each of the screws (7) is used to connect the gland (5) and the base (2) together, and an elastic member (8) is also disposed between each of the screws and the gland (5).
2. The inner hole grinding tool according to claim 1, characterized in that: The screw (7) is a butterfly screw.
3. The inner hole grinding tool according to claim 1, characterized in that: A gasket (9) is also provided between the elastic member (8) and the gland (5).
4. The inner hole grinding tool according to claim 1, characterized in that: The diameter of the annular step surface (3) is 0.3-0.7 mm larger than the outer diameter of the thin-walled annular component (1).
5. The inner hole grinding tool according to claim 4, characterized in that: The diameter of the annular step surface (3) is 0.5 mm greater than the outer diameter of the thin-walled annular component (1).