Turning clamp for thin-wall workpiece
Through the combined structure of the annular multi-point clamping method and the inner locking block, the deformation and accuracy problems of thin-walled workpieces during processing are solved, and rapid clamping and high-precision machining are achieved.
Patent Information
- Application Number
- CN202422362339.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-27
AI Technical Summary
When processing thin-walled end cap products with a diameter of more than 1m and a wall thickness of 25mm-40mm, existing fixtures have problems such as few clamping points, excessive clamping force, resulting in deformation of the workpiece, poor flatness and insufficient support, and the clamping position accuracy is difficult to grasp.
The ring-shaped multi-point clamping method is adopted, and the combined structure of the outer press ring and the inner locking block is used to achieve rapid clamping and positioning of the workpiece through the compression bolts and rubber elastic elements. The inner locking block provides a horizontal support surface, reduces clamping force, increases friction, and ensures the flatness and position accuracy of the workpiece.
It realizes rapid clamping and positioning of thin-walled workpieces, reduces deformation, meets planarity requirements, improves machining accuracy and position accuracy, and avoids the shock knife phenomenon of workpieces during processing.
Smart Images
Figure CN223114682U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of workholding fixtures, and specifically relates to a turning fixture for thin-walled workpieces. Background Art
[0002] Common problems of the current processing workholding fixtures in the industry are as follows:
[0003] 1. When processing thin-walled end-cover products with a diameter exceeding 1 m and a wall thickness in the range of 25 mm - 40 mm, after the workpiece is clamped by a three-jaw or four-jaw chuck, the number of clamping points is small, the flatness of the workpiece is greatly affected by the clamping force, and if the clamping force is too large, the workpiece will be deformed.
[0004] 2. After the workpiece is deformed, the turned plane is deformed, and the flatness tolerance is seriously exceeded. The supporting force is too small, and the support fails during the processing of the part, resulting in chatter of the workpiece and inability to meet the requirements of qualified roughness and flatness.
[0005] 3. After the workholding fixture fixes and clamps the workpiece, it is very difficult to master the clamping position accuracy. Summary of the Invention
[0006] The utility model provides a turning fixture for thin-walled workpieces, aiming to solve the problems pointed out in the above background art.
[0007] To achieve the above technical objectives, the utility model adopts the following technical solutions:
[0008] A turning fixture for thin-walled workpieces includes an elastic rubber plug, a pressing bolt, a rubber elastic flat gasket, a fixing bolt, an inner locking block, an outer pressing ring, and a base. Among them, the outer pressing ring is fixedly connected to the base through the pressing bolt, and a rubber elastic flat gasket is placed between the outer pressing ring and the base. The inner locking block is located at the inner edge of the outer pressing ring, and the outer edge of the inner locking block is in contact with the inner edge of the outer pressing ring in an inclined plane. The bottom end of the inner locking block is in contact with the top end of the base in a horizontal plane. There are several inner locking blocks, and the projection of the inner locking blocks on the horizontal plane is fan-shaped. An elastic rubber plug is placed between adjacent inner locking blocks. The inner locking block is fixedly connected to the base through the fixing bolt, and a horizontal supporting plane is provided at the inner edge of the inner locking block.
[0009] Preferably, an outer ring fixing pin hole is provided on the outer pressing ring.
[0010] Preferably, it further includes a thin-walled workpiece. The thin-walled workpiece is in a disc shape, and the thin-walled workpiece is clamped and fixed at the inner edge of the inner locking block, and the lower end of the outer side of the thin-walled workpiece is located on the supporting plane.
[0011] Preferably, a through hole is provided on the base.
[0012] Preferably, compression bolt holes are provided on the outer pressure ring, and compression bolts penetrate through the compression bolt holes; fixing bolt holes are provided on the inner locking block, and fixing bolts penetrate through the fixing bolt holes.
[0013] The utility model has the following beneficial effects:
[0014] 1. By tightening a plurality of compression bolts on the outer pressure ring, a horizontal pressing force is generated on the inner locking block. At the same time, the inner edge of the inner locking block has a planar support, enabling the workpiece to withstand the downward pressure of the turning tool.
[0015] 2. By using annular multi-point clamping and adopting an annular inward clamping support method, the clamping force is reduced and the friction force is increased, so as to quickly clamp and position the workpiece, realize the vertical turning machining of the end cover stop, and meet the flatness requirements.
[0016] 3. By first installing the compression bolts and then loosening the fixing bolts on the inner locking block, the position accuracy of the workpiece clamping is guaranteed. Description of the Drawings
[0017] Figure 1 is the top view of the utility model;
[0018] Figure 2 is the longitudinal sectional view of the utility model;
[0019] In the figure:
[0020] 1. Elastic rubber plug 2. Compression bolt 3. Outer ring fixing pin hole 4. Rubber elastic flat washer 5. Fixing bolt 6. Inner locking block 7. Outer pressure ring 8. Base 9. Thin-walled workpiece. Detailed Embodiment
[0021] The following will describe the detailed embodiment of the utility model in detail. In order to avoid too many unnecessary details, the well-known structures or functions will not be described in detail in the following embodiments. The approximate language used in the following embodiments can be used for quantitative expression, indicating that a certain change in quantity is allowed without changing the basic function. Unless otherwise defined, the technical and scientific terms used in the following embodiments have the same meaning as commonly understood by those skilled in the art to which the utility model belongs.
[0022] Embodiment 1
[0023] A turning fixture for thin-walled workpieces, such as Figure 1 , Figure 2As shown in the figure, it includes an elastic rubber plug 1, a pressing bolt 2, a rubber elastic flat gasket 4, a fixing bolt 5, an inner locking block 6, an outer pressing ring 7, and a base 8. Among them, the outer pressing ring 7 is fixedly connected to the base 8 through the pressing bolt 2, and a rubber elastic flat gasket 4 is placed between the outer pressing ring 7 and the base 8. The inner locking block 6 is located at the inner edge of the outer pressing ring 7. The outer edge of the inner locking block 6 fits with the inner edge of the outer pressing ring 7 in an inclined plane. The bottom end of the inner locking block 6 fits with the top end of the base 8 in a horizontal plane. There are several inner locking blocks 6, and the projection of the inner locking blocks 6 on the horizontal plane is fan-shaped. An elastic rubber plug 1 is placed between adjacent inner locking blocks 6. The inner locking block 6 is fixedly connected to the base 8 through the fixing bolt 5, and a horizontal supporting plane is provided at the inner edge of the inner locking block 6.
[0024] Embodiment 2
[0025] A turning fixture for thin-walled workpieces, as Figure 1 、 Figure 2 shown in the figure, it includes an elastic rubber plug 1, a pressing bolt 2, a rubber elastic flat gasket 4, a fixing bolt 5, an inner locking block 6, an outer pressing ring 7, and a base 8. Among them, the outer pressing ring 7 is fixedly connected to the base 8 through the pressing bolt 2, and a rubber elastic flat gasket 4 is placed between the outer pressing ring 7 and the base 8. The inner locking block 6 is located at the inner edge of the outer pressing ring 7. The outer edge of the inner locking block 6 fits with the inner edge of the outer pressing ring 7 in an inclined plane. The bottom end of the inner locking block 6 fits with the top end of the base 8 in a horizontal plane. There are several inner locking blocks 6, and the projection of the inner locking blocks 6 on the horizontal plane is fan-shaped. An elastic rubber plug 1 is placed between adjacent inner locking blocks 6. The inner locking block 6 is fixedly connected to the base 8 through the fixing bolt 5, and a horizontal supporting plane is provided at the inner edge of the inner locking block 6. An outer ring fixing pin hole 3 is provided on the outer pressing ring 7. It further includes a thin-walled workpiece 9. The thin-walled workpiece 9 is in a disc shape. The thin-walled workpiece 9 is clamped and fixed at the inner edge of the inner locking block 6. The lower end of the outside of the thin-walled workpiece 9 is located on the supporting plane. A through hole is provided on the base 8. A pressing bolt hole is provided on the outer pressing ring 7, and the pressing bolt 2 penetrates through the pressing bolt hole; a fixing bolt hole is provided on the inner locking block 6, and the fixing bolt 5 penetrates through the fixing bolt hole.
[0026] The above has described the embodiments of the present invention in detail, but the above content is only the preferred embodiments of the present invention and is not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the scope of the application of the present invention shall be included within the protection scope of the present invention.
Claims
1. A turning fixture for thin-walled workpieces, characterized in that, Comprising an elastic rubber plug (1), a compression bolt (2), a rubber elastic flat gasket (4), a fixing bolt (5), an inner locking block (6), an outer pressing ring (7), and a base (8). Among them, the outer pressing ring (7) is fixedly connected to the base (8) through the compression bolt (2), and a rubber elastic flat gasket (4) is placed between the outer pressing ring (7) and the base (8). The inner locking block (6) is located at the inner edge of the outer pressing ring (7). The outer edge of the inner locking block (6) is in contact with the inner edge of the outer pressing ring (7) in an inclined plane. The bottom end of the inner locking block (6) is in contact with the top end of the base (8) in a horizontal plane. There are several inner locking blocks (6), and the projection of the inner locking blocks (6) on the horizontal plane is fan-shaped. An elastic rubber plug (1) is placed between adjacent inner locking blocks (6). The inner locking block (6) is fixedly connected to the base (8) through the fixing bolt (5), and a horizontal support plane is provided at the inner edge of the inner locking block (6).
2. The turning fixture for a thin-walled workpiece according to claim 1, characterized in that, An outer ring fixing pin hole (3) is provided on the outer pressing ring (7).
3. The turning fixture for a thin-walled workpiece according to claim 1, characterized in that, It further includes a thin-walled workpiece (9). The thin-walled workpiece (9) is in a disc shape. The thin-walled workpiece (9) is clamped and fixed at the inner edge of the inner locking block (6), and the lower end of the outside of the thin-walled workpiece (9) is located on the support plane.
4. The turning fixture for a thin-walled workpiece according to claim 1, characterized in that, A through hole is provided on the base (8).
5. The turning fixture for a thin-walled workpiece according to claim 1, characterized in that, A compression bolt hole is provided on the outer pressing ring (7), and the compression bolt (2) penetrates through the compression bolt hole; a fixing bolt hole is provided on the inner locking block (6), and the fixing bolt (5) penetrates through the fixing bolt hole.