Multi-process combined common clamp for large parts
A multi-process combined fixture with L-shaped support blocks addresses the challenge of processing multiple angled side holes on large components by enabling efficient and cost-effective processing through quick tool changes and stable fixation, enhancing production efficiency.
Patent Information
- Application Number
- CN202422193359.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-09
AI Technical Summary
In the prior art, the machining of side holes on multiple surfaces of large parts is limited by the machine stroke, and a multi-axis machine tool and side milling head are required, which increases the cost and commissioning difficulty and affects production efficiency.
A multi-process combination common fixture is designed, using an L-shaped support block and positioning surface structure, and through the coordination of tooling plates and support blocks, multi-angle positioning and rapid mold change are achieved.
It realizes efficient processing of side holes on multiple surfaces of large parts with different angles, reducing processing costs, improving production efficiency and stability of processing size.
Smart Images
Figure CN223098636U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of machining fixtures, in particular to a multi-process combined common fixture for large parts. Background Art
[0002] With the development of high-end manufacturing, the market competition becomes more and more fierce. In order to reduce costs, some parts are integrated into a whole in product design by customers, which increases the difficulty of machining. Especially for the machining of side holes at different angles on multiple surfaces of large parts, it is often impossible to achieve due to the limitation of the machine tool stroke; multi-axis machine tools are required for machining, increasing costs; in addition, side milling heads need to be purchased, increasing tool costs, and it is inconvenient to manufacture multiple toolings and debug and change dies, affecting production efficiency.
[0003] Therefore, technicians in this field are committed to developing a multi-process combined common fixture for large parts to solve the problem of machining side holes at different angles on multiple surfaces of large parts. Summary of the Utility Model
[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is how to design a common fixture to solve the limitations of machine tools and tools, achieve rapid die change, and reduce machining costs.
[0005] To achieve the above object, the utility model provides a multi-process combined common fixture for large parts, including a plurality of support blocks arranged in a straight line parallel to each other and spaced apart. The support blocks are L-shaped, including a horizontal part and a vertical part. A vertical first positioning surface is arranged on the inner side of the vertical part. A second positioning surface and a third positioning surface are respectively and obliquely arranged on the inner sides of one end of the vertical part and one end of the horizontal part. The second positioning surface and the third positioning surface are located on the same plane.
[0006] Further, the support block is provided with a first outer surface and a second outer surface perpendicular to each other and two side surfaces perpendicular to the first outer surface and the second outer surface. The second outer surface is matched with the workbench of the machine tool.
[0007] Further, the first positioning surface is arranged opposite to the first outer surface and parallel to the first outer surface. A first end surface is vertically arranged at one end of the first outer surface. The second positioning surface is obliquely arranged between the first end surface and one end of the first positioning surface. The first outer surface, the first positioning surface, the first end surface, the second positioning surface and the two side surfaces define the vertical part. A first support surface is arranged at the other end of the first positioning surface.
[0008] Further, the third positioning surface is formed by being tangent to the horizontal portion along the extension of the second positioning surface. One end of the second outer surface is vertically provided with a second end face, one end of the third positioning surface is vertically provided with a second support surface, a connecting surface is arranged between the second support surface and the second end face, and a boss surface is arranged between the first support surface and the third positioning surface.
[0009] Further, the first support surface, the boss surface, the third positioning surface, the second support surface, the connecting surface, the second end face, the second outer surface and the two side surfaces define the horizontal portion.
[0010] Further, the second positioning surface and the third positioning surface respectively form a 45-degree angle with the first outer surface.
[0011] Further, support block fixing screw holes are respectively formed on the first end face and the boss surface.
[0012] Further, tooling positioning screw holes are respectively formed on the first positioning surface, the second positioning surface and the third positioning surface.
[0013] Further, positioning pin holes are respectively formed on the first positioning surface, the second positioning surface and the third positioning surface.
[0014] Further, the number of the tooling positioning screw holes and the positioning pin holes formed on the first positioning surface is more than two.
[0015] Advantages of the present utility model:
[0016] By sharing one tooling fixture, the present utility model realizes the machining of different-angle side holes on multiple surfaces of a large workpiece. It not only reduces the machining cost, but also can quickly replace the mold, is easy to operate, has stable machining dimensions, and is suitable for mass production.
[0017] The concept, specific structure and technical effects generated by the present utility model will be further described below in conjunction with the drawings to fully understand the purpose, features and effects of the present utility model. Description of the Drawings
[0018] Figure 1 It is a schematic structural diagram of a support block of a preferred embodiment of the present utility model;
[0019] Figure 2 It is a front view schematic diagram of a tooling plate of a preferred embodiment of the present utility model;
[0020] Figure 3 It is a back view schematic diagram of a tooling plate of a preferred embodiment of the present utility model;
[0021] Figure 4Schematic diagram of the fixture plate of a preferred embodiment of the present utility model being positioned at a 90-degree angle on the support block;
[0022] Figure 5 Schematic diagram of the fixture plate of a preferred embodiment of the present utility model being positioned at a 45-degree angle on the support block.
[0023] Wherein, 1 - support block, 2 - fixture plate, 11 - first positioning surface, 12 - second positioning surface, 13 - third positioning surface, 14 - first outer surface, 15 - second outer surface, 16 - side surface, 17 - first end surface, 18 - first support surface, 19 - second end surface, 20 - second support surface, 21 - connection surface, 22 - boss surface, 23 - support block fixing screw hole, 24 - fixture positioning screw hole, 25 - positioning pin hole. Detailed implementation manners
[0024] The preferred embodiments of the present utility model are introduced below with reference to the accompanying drawings of the specification to make its technical content clearer and easier to understand. The present utility model can be embodied in many different forms of embodiments, and the protection scope of the present utility model is not limited to the embodiments mentioned in the text.
[0025] In the drawings, components with the same structure are denoted by the same numeral labels, and components with similar structures or functions are denoted by similar numeral labels. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present utility model does not limit the size and thickness of each component. In order to make the drawings clearer, the thickness of some parts in the drawings is appropriately exaggerated.
[0026] Embodiment
[0027] As Figures 1-5 shown, this embodiment provides a multi-process combined common fixture for large parts, including a plurality of support blocks 1 arranged in parallel and spaced apart in a straight line. The support block 1 is in an L shape, including a horizontal part and a vertical part. The inner side of the vertical part is provided with a vertical first positioning surface 11. The second positioning surface 12 and the third positioning surface 13 are respectively and obliquely arranged at one end of the vertical part and one end of the horizontal part. The second positioning surface 12 and the third positioning surface 13 are in the same plane.
[0028] The support block is provided with a first outer surface 14 and a second outer surface 15 that are perpendicular to each other, and two side surfaces 16 perpendicular to the first outer surface 14 and the second outer surface 15. The second outer surface 15 is matched with the workbench of the machine tool.
[0029] The first positioning surface 11 is arranged opposite to the first outer surface 14 and parallel to the first outer surface 14. One end of the first outer surface 14 is vertically provided with a first end surface 17. The second positioning surface 12 is inclined and arranged between the first end surface 17 and one end of the first positioning surface 11. The first outer surface 14, the first positioning surface 11, the first end surface 17, the second positioning surface 12 and the two side surfaces 16 define a vertical portion. The other end of the first positioning surface 11 is provided with a first support surface 18.
[0030] The third positioning surface 13 is formed by being tangent to the horizontal portion along the extension of the second positioning surface 12. One end of the second outer surface 15 is vertically provided with a second end surface 19. One end of the third positioning surface 13 is vertically provided with a second support surface 20. A connecting surface 21 is arranged between the second support surface 20 and the second end surface 19. A boss surface 22 is arranged between the first support surface 18 and the third positioning surface 13.
[0031] The first support surface 18, the boss surface 22, the third positioning surface 13, the second support surface 20, the connecting surface 21, the second end surface 21, the second outer surface 15 and the two side surfaces 16 define a horizontal portion.
[0032] The second positioning surface 12 and the third positioning surface 13 on the support block 1 can be designed at different angles according to different processing features. In this embodiment, the second positioning surface 12 and the third positioning surface 13 respectively form a 45-degree angle with the first outer surface 14.
[0033] Support block fixing screw holes 23 are respectively opened on the first end surface 17 and the boss surface 22 for fixing the support block 1 on the workbench of the machine tool.
[0034] Tooling positioning screw holes 24 are respectively opened on the first positioning surface 11, the second positioning surface 12 and the third positioning surface 13 for fixing a tooling plate 2 for carrying a product workpiece.
[0035] Positioning pin holes 25 are respectively opened on the first positioning surface 11, the second positioning surface 12 and the third positioning surface 13. It can be accurately connected with the positioning pin holes on the back of the tooling plate 2 through positioning pins to achieve rapid die change.
[0036] The number of the tooling positioning screw holes 24 and the positioning pin holes 25 opened on the first positioning surface 11 is more than two.
[0037] The operation method of the multi-process combined common fixture for the large part is as follows:
[0038] On the back of the tooling plate 2, there are positioning pin holes and screw fixing holes. The positioning pin holes for each process are marked with process numbers for easy distinction. Align the positioning pin holes on the back of the tooling plate 2 with the corresponding positioning pin holes 25 on the support block 1, then fix the tooling plate 2 on the support block 1 with screws, and then fix the support block 1 on the workbench of the machine tool. When machining the features of different processes, the support block 1 remains stationary. Only need to remove the tooling plate 2, align the positioning pins on the back of the tooling plate 2 with the positioning pin holes 25 of the support block 1 and lock them.
[0039] As Figure 4 shown, place the tooling plate 2 vertically on the first support surface 18 of the support plate 1. The back of the tooling plate 2 abuts against the first positioning surface 11. After accurately positioning the tooling plate 2 and each support block 1 with positioning pins, lock them with screws. At this time, the tooling plate 2 is positioned at 90 degrees on the support block 1.
[0040] As Figure 5 shown, place the tooling plate 2 obliquely on the second support surface 20 of the support plate 1. The back of the tooling plate 2 abuts against the second positioning surface 12 and the third positioning surface 13. After accurately positioning the tooling plate 2 and each support block 1 with positioning pins, lock them with screws. The tooling plate 2 is positioned at 45 degrees on the support block 1.
[0041] By changing the angle at which the tooling plate 2 is positioned on the support block 1 as shown in Figure 4 and Figure 5 , one tooling fixture can be applied to multiple processes, thus reducing costs.
[0042] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.
Claims
1. A multi-process combined shared fixture for large parts, characterized in that, It includes a plurality of support blocks arranged in a straight line parallel to and spaced apart from each other. The support blocks are L-shaped, including a horizontal portion and a vertical portion. A vertical first positioning surface is provided on the inner side of the vertical portion. A second positioning surface and a third positioning surface are respectively inclined on the inner sides of one end of the vertical portion and one end of the horizontal portion. The second positioning surface and the third positioning surface are in the same plane.
2. The multi-process combined and shared fixture for large parts according to claim 1, characterized in that The support block is provided with a first outer surface and a second outer surface perpendicular to each other and two side surfaces perpendicular to the first outer surface and the second outer surface. The second outer surface is matched with the workbench of the machine tool.
3. The multi-process combined shared fixture for large parts according to claim 2, wherein, The first positioning surface is arranged opposite to the first outer surface and parallel to the first outer surface. A first end surface is vertically provided at one end of the first outer surface. The second positioning surface is inclined between the first end surface and one end of the first positioning surface. The first outer surface, the first positioning surface, the first end surface, the second positioning surface and the two side surfaces define the vertical portion. A first support surface is provided at the other end of the first positioning surface.
4. The multi-process combined common fixture for large parts according to claim 3, wherein The third positioning surface is formed by being tangent to the horizontal portion along the extension of the second positioning surface. A second end surface is vertically provided at one end of the second outer surface. A second support surface is vertically provided at one end of the third positioning surface. A connecting surface is provided between the second support surface and the second end surface. A boss surface is provided between the first support surface and the third positioning surface.
5. The multi-process combined common fixture for large parts according to claim 4, wherein The first support surface, the boss surface, the third positioning surface, the second support surface, the connecting surface, the second end surface, the second outer surface and the two side surfaces define the horizontal portion.
6. The multi-process combined and shared fixture for large parts according to claim 4, characterized in that, The second positioning surface and the third positioning surface respectively form a 45-degree angle with the first outer surface.
7. The multi-process combined and shared fixture for large parts according to claim 5, characterized in that, Support block fixing screw holes are respectively provided on the first end surface and the boss surface.
8. The multi-process combined common fixture for large parts according to claim 1, characterized in that Tooling positioning screw holes are respectively provided on the first positioning surface, the second positioning surface and the third positioning surface.
9. The multi-process combined common fixture for large parts according to claim 8, characterized in that Positioning pin holes are respectively provided on the first positioning surface, the second positioning surface and the third positioning surface.
10. The multi-process combined common fixture for large parts according to claim 9, characterized in that, The number of tooling positioning screw holes and positioning pin holes provided on the first positioning surface is more than two.