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Combined tool for skin stretch forming and numerical control milling and using method thereof

A technology of CNC milling and milling, which is used in manufacturing tools, other manufacturing equipment/tools, etc., to achieve the effect of ensuring accuracy, ensuring matrix strength, and preventing tremors

Active Publication Date: 2021-03-23
XIAN AIRCRAFT IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the present stage of skin milling, digital vacuum chucks or vacuum platforms can be used as milling fixtures for flat parts, but for parts with large curvature, special milling tools still need to be designed

Method used

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  • Combined tool for skin stretch forming and numerical control milling and using method thereof
  • Combined tool for skin stretch forming and numerical control milling and using method thereof

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Embodiment Construction

[0019] Such as Figure 1-2 As shown, a combined tooling for skin drawing and CNC milling, including drawing half mold 9 and milling half mold 1, lifting ring 4, part pressure plate 5, vacuum hose 6, rubber pad 13, drawing half mold The upper surface of the die 9 is the shape of the part and its extension surface. The two ends of the length direction are provided with pull-shaped positioning holes 12. There is a guide column 11, a positioning boss 10 is arranged in the middle of the side in the length direction, the center of the milling half mold 1 is a boss shape, the surface shape of the boss is the shape of the part and its extension, and a milling groove 3 is formed at the edge of the shape of the part , the inner side of the milling groove 3 is provided with an air extraction hole 7, the boss is surrounded by a part pressure plate 5, and the milling half-mold 1 is provided with a milling positioning hole 2 corresponding to the position of the pull-shaped positioning hole ...

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Abstract

The invention provides a combined tool for skin stretch forming and numerical control milling and a using method thereof. The combined tool comprises a stretch-forming half die, a milling half die, ahanging ring, a part pressing plate, a vacuum rubber pipe and a rubber pad, the upper surface of the stretch-forming half die is a part appearance and an extending surface thereof, stretch-forming positioning holes are formed in the two ends in the length direction, and the lower surface of the stretch-forming half die and the upper surface of the milling half die are consistent in appearance andare in an offset relation. According to the combined tool, a milling die base body serves as a combined tool base body, the requirements of skin stretch forming for tool strength and surface smoothness are met, and the vacuum adsorption requirement of numerical control milling for the tool can also be met; and the overall weight of the tool is reduced, the number of tools needed is reduced, the manufacturing cost of the tool is saved, and high economic value is achieved.

Description

technical field [0001] The invention relates to the technical field of aircraft skin manufacturing and skin milling, in particular to a combined tool that can be used for skin drawing and numerical control milling and a use method. [0002] technical background [0003] Aircraft skin parts are the key parts to form and maintain the aerodynamic shape of the aircraft. The manufacturing level and product quality of skin parts directly affect the aerodynamic performance and service life of the aircraft, and are one of the main factors affecting the aircraft manufacturing cycle, cost and benefit. [0004] The process flow of a typical skin part forming method is: blanking, drawing, rough cutting, chemical milling, fine cutting, and surface treatment. Stretch forming is one of the main forming methods of aircraft skin parts, and plays an important role in the aircraft manufacturing industry. Stretching is generally a process in which the shape of the part is consistent with the s...

Claims

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Application Information

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IPC IPC(8): B23P23/04
CPCB23P23/04
Inventor 张钊何刚谷雨薇
Owner XIAN AIRCRAFT IND GROUP
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