High-precision aviation thin-wall part clamp
By designing a fixture for high-precision aviation thin-walled parts, using the combination of guard plate, negative pressure assembly and shock-proof pressure plate, the problems of low machining accuracy and easy cracking of the parts surface in the prior art are solved, and higher machining stability and accuracy are achieved, and processing efficiency and yield rate are improved.
Patent Information
- Application Number
- CN202422122468.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The existing high-precision aviation thin-walled parts processing technology has problems such as low machining accuracy, unstable quality and large deviations, especially in the processing of thin-walled parts, which are prone to cracks on the surface of the parts.
A high-precision aviation thin-walled clamp is designed, including base plate, guard plate, negative pressure assembly and shock-proof pressure plate. The edges of the guard plate are reinforced, the negative pressure components are adsorbed and fixed, and the shock-proof pressure plate is secondary fixed and reinforced, ensuring that the parts are not prone to cracks during the processing process, and improving processing accuracy and stability.
This fixture can effectively prevent cracks on the surface of parts, improve processing accuracy, reduce deviations, improve yield, and improve processing efficiency by 30%-35%.
Smart Images
Figure CN222972000U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-precision machining equipment, in particular to a fixture for high-precision aviation thin-walled parts. Background Technique
[0002] High-precision aviation thin-walled parts are components with extremely high requirements for precision and quality in the aviation manufacturing field. These thin-walled parts are usually used in the structures and engines of aircraft and need to withstand extreme loads and environmental conditions. High-precision aviation thin-walled parts are relatively large in size, and it is difficult to ensure the wall thickness and flatness.
[0003] In the existing processing method, a hoisting process platform is generally adopted. The pressure of hoisting and fixing the parts is used to move them, and the parts are reinforced by pressing plates. Therefore, in the processing process, not only is it easy to cause cracks on the surface of the parts, but also the processing accuracy is not high, the quality is unstable, and there are large deviations. Content of the Utility Model
[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a fixture for high-precision aviation thin-walled parts with high processing stability.
[0005] The above-mentioned utility model purpose of the utility model is achieved through the following technical solutions:
[0006] A fixture for high-precision aviation thin-walled parts, including a bottom plate. A guard plate is arranged on one side of the bottom plate along its circumferential direction. A negative pressure assembly is arranged on the surface of the bottom plate, and a plurality of shock-proof pressing plates are arranged on one side of the negative pressure assembly.
[0007] By adopting the above technical solutions, the edge of the high-precision aviation thin-walled part is reinforced and protected by the guard plate, and is adsorbed and fixed by the negative pressure assembly. Finally, the shock-proof pressing plate is used for secondary fixing and reinforcement, so as to ensure that the surface of the part is not easy to generate cracks during the processing process, ensure the processing accuracy, reduce the deviation, and improve the yield rate.
[0008] The utility model can be further configured in a preferred example as follows: The shock-proof pressing plate includes a connecting plate, and a plurality of pressing columns are uniformly arranged at the bottom of the connecting plate along its length direction.
[0009] By adopting the above technical solutions, the pressing columns are pressed on the surface of the part, which can play a very high shock-proof effect during the processing of the part, can better improve the surface roughness and processing accuracy, and improve the processing efficiency.
[0010] In a preferred embodiment, the present utility model can be further configured as follows: the negative pressure assembly includes a negative pressure plate, a sealing groove, communication holes, and a negative pressure groove. The sealing groove is formed along the circumference of the negative pressure plate. A plurality of negative pressure grooves are evenly formed inside the negative pressure plate. A plurality of communication holes are formed in the middle of the negative pressure plate, and the communication holes are connected to the negative pressure grooves.
[0011] By adopting the above technical solution, during processing, the workpiece is placed on the surface of the negative pressure assembly, and then the air inside the negative pressure groove is extracted through the communication holes by an external negative pressure device, and the stability during suction is ensured through the sealing groove. Negative pressure adsorption has a high anti-vibration effect, can better ensure the surface roughness, wall thickness, and machining accuracy, improve the machining efficiency, and prevent the part from vibrating and cracking when removing the process table at the end.
[0012] In a preferred embodiment, the present utility model can be further configured as follows: a plurality of stress relief grooves are formed along the length direction of the guard plate, and a buckle plate is arranged on the inner side of the guard plate.
[0013] By adopting the above technical solution, the stress relief grooves can release more stress during rough machining, and the part is fastened by the buckle plate, which is convenient for machining the back of the part.
[0014] In a preferred embodiment, the present utility model can be further configured as follows: a plurality of shaping plates are further arranged on one side of the bottom plate.
[0015] By adopting the above technical solution, the shaping plates are used to create various connection hole shapes on the surface of the workpiece, which is convenient for disassembling and assembling the part.
[0016] In summary, the present utility model includes at least one of the following beneficial technical effects:
[0017] For the processing of high-precision aviation thin-walled parts products, the present utility model can make the part processing more stable and the dimensional tolerance better controlled; at the same time, by adding stress relief grooves, the stress generated during the processing of the product can be effectively released, the thin-walled area is evenly stressed through the negative pressure assembly, and the product strength is improved by adding an anti-vibration pressing plate to achieve the mass production stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to make the content of the present utility model easier to be clearly understood, the following further detailed description of the present utility model is made according to specific embodiments in combination with the drawings, where
[0019] Figure 1 is the overall structural schematic diagram of this embodiment.
[0020] Figure 2 is Figure 1 the cross-sectional structural schematic diagram of
[0021] The reference numerals in the drawings are as follows:
[0022] 1. Base plate; 2. Protective plate; 21. Stress relief groove; 22. Buckle plate; 3. Negative pressure assembly; 31. Negative pressure plate; 32. Sealing groove; 33. Communication hole; 34. Negative pressure groove; 4. Shock-proof pressing plate; 41. Connecting plate; 42. Pressing column; 5. Molding plate. Detailed implementation manners
[0023] The present utility model will be further described in detail below with reference to the accompanying drawings.
[0024] Refer to Figure 1 and Figure 2 , a high-precision aviation thin-wall part fixture disclosed by the present utility model, comprising a base plate 1, a protective plate 2 is arranged along the circumferential direction of one side of the base plate 1, a negative pressure assembly 3 is arranged on the surface of the base plate 1, and a plurality of shock-proof pressing plates 4 are arranged on one side of the negative pressure assembly 3. The edge of the high-precision aviation thin-wall part is reinforced and protected by the protective plate 2, adsorbed and fixed by the negative pressure assembly 3, and finally secondarily fixed and reinforced by the shock-proof pressing plate 4, so as to ensure that the surface of the part is not easily cracked during the processing, ensure the processing accuracy, reduce the deviation, and be beneficial to the yield rate.
[0025] The shock-proof pressing plate 4 comprises a connecting plate 41, and a plurality of pressing columns 42 are uniformly arranged along the length direction of the bottom of the connecting plate 41. Pressing the part surface by the pressing columns 42 can play a very high shock-proof effect during the part processing, can better improve the surface roughness and processing accuracy, and improve the processing efficiency.
[0026] The negative pressure assembly 3 comprises a negative pressure plate 31, a sealing groove 32, a communication hole 33 and a negative pressure groove 34. The sealing groove 32 is opened along the circumferential direction of the negative pressure plate 31, a plurality of negative pressure grooves 34 are uniformly opened inside the negative pressure plate 31, a plurality of communication holes 33 are opened in the middle of the negative pressure plate 31, and the communication holes 33 are connected with the negative pressure grooves 34. During processing, the workpiece is placed on the surface of the negative pressure assembly 3, and then the air inside the negative pressure groove 34 is extracted through the communication holes 33 by an external negative pressure device, and the stability during the pumping pressure is ensured through the sealing groove 32. The negative pressure adsorption has a very high shock-proof effect, can better ensure the surface roughness, wall thickness, processing accuracy, and improve the processing efficiency, and prevent the part from vibrating and cracking when removing the process platform finally when leaving a process platform on the surface.
[0027] A plurality of stress relief grooves 21 are opened along the length direction of the protective plate 2, and a buckle plate 22 is arranged inside the protective plate 2. The stress relief grooves 21 can release more stress during rough machining, and the part is fastened by the buckle plate 22, which is convenient for the back processing of the part.
[0028] On one side of the bottom plate 1, there are also several shaping plates 5, which are used to shape various connection holes on the surface of the workpiece, facilitating the disassembly and assembly of parts.
[0029] This fixture has good improvement for large thin-walled parts and parts with small wall thickness tolerances, and can increase the processing efficiency by 30%-35%.
[0030] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A high-precision aviation thin-walled parts fixture, comprising a base plate (1), characterized in that: A guard plate (2) is arranged on one side of the base plate (1) along its circumference, a negative pressure component (3) is arranged on the surface of the base plate (1), and a plurality of shock-proof pressure plates (4) are arranged on one side of the negative pressure component (3).
2. A high-precision aviation thin-walled parts fixture according to claim 1, characterized in that: The anti-vibration pressure plate (4) comprises a connecting plate (41), and a plurality of pressure columns (42) are evenly arranged at the bottom of the connecting plate (41) along its length direction.
3. A high-precision aviation thin-walled parts fixture according to claim 1, characterized in that: The negative pressure assembly (3) comprises a negative pressure plate (31), a sealing groove (32), a connecting hole (33) and a negative pressure groove (34); the sealing groove (32) is opened along the circumference of the negative pressure plate (31); a plurality of negative pressure grooves (34) are evenly opened inside the negative pressure plate (31); a plurality of connecting holes (33) are opened in the middle of the negative pressure plate (31); and the connecting holes (33) are connected to the negative pressure grooves (34).
4. A high-precision aviation thin-walled parts fixture according to claim 1, characterized in that: The guard plate (2) is provided with a plurality of stress release grooves (21) along its length direction.
5. A high-precision aviation thin-walled parts fixture according to claim 4, characterized in that: A buckle plate (22) is provided on the inner side of the guard plate (2).
6. A high-precision aviation thin-walled parts fixture according to claim 1, characterized in that: A plurality of shaping plates (5) are also provided on one side of the bottom plate (1).