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Roll bending forming method for aircraft skin

A technology for aircraft skin and roll forming, applied in aircraft parts, vehicle parts, transportation and packaging, etc., can solve the problems of poor thickness, inconsistent deformation and curvature of parts, etc., to improve production efficiency, avoid parts defects, and improve safety. high effect

Inactive Publication Date: 2017-08-18
XIAN AIRCRAFT IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If we adopt the traditional roll bending method, the material thinning transition area will produce "edge"-shaped defects due to thickness differences, and the deformation and curvature of the parts during the rolling process will be inconsistent due to thickness changes, resulting in defects

Method used

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  • Roll bending forming method for aircraft skin
  • Roll bending forming method for aircraft skin
  • Roll bending forming method for aircraft skin

Examples

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Embodiment Construction

[0019] Referring to the accompanying drawings, the embodiment takes the skin of a certain type of aircraft as an example. The material of the skin is 2060-T8E30 aluminum-lithium alloy, and its external dimensions are δ6mm×1100mm×6010mm. The skin is a variable thickness part, and its thickness distribution is δ6.0, δ5.0, δ3.5, δ2.8, δ1.4. Adopt the method of the present invention to carry out roll bending processing to it:

[0020] First, according to the theoretical model of aircraft skin, the plate-shaped skin material is milled by machine milling method. According to its thickness distribution, the sunken area forms a concave surface 2. At this time, the skin 1 is a concave surface. Flat state of profile 2;

[0021] Secondly, choose a plastic polyurethane composite board with a thickness of δ6 mm as the filling board 3. According to the theoretical model of the aircraft skin, the filling board is milled and cut by the method of machining and milling in reverse. The milling ...

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Abstract

A roll-bending forming method for aircraft skin. The theoretical model of the aircraft skin is known. According to the theoretical model of the aircraft skin, the plate-shaped skin material is milled and processed into a flat state by the method of machining and milling. The skin with a concave surface; the skin with a concave surface and the filling plate with a convex surface are concave-convex butted to form a composite plate composed of the skin material and the filling plate, and the butted composite plate One end is riveted and fixed; the combined plate is rolled and formed according to the theoretical model of the aircraft skin; finally, the filler plate is removed from the formed combined plate to obtain the roll-formed aircraft skin.

Description

technical field [0001] The invention belongs to a method for forming aircraft skin parts, in particular to a large-scale skin rolling forming method, and relates to a filling type rolling forming method. Background technique [0002] The development of the aviation industry plays a vital role in promoting my country's transportation industry and national defense military manufacturing industry. In recent years, due to the gradual increase in the quality requirements and performance of aircraft, aircraft are often subjected to local thinning treatment, which can effectively reduce weight on the one hand, and enhance the strength of parts on the other hand. At present, large-scale skins (length greater than 4m) are often formed by gate pressure and roll bending methods, but the gate pressure forming method will cause parts to be partially extended, which is difficult to effectively control. For large-scale skins, there are many roll-bending forming methods, mainly rolling and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21D5/14B21D53/88
CPCB23P15/00B21D5/14B21D53/88B23P2700/01
Inventor 同博钟李欣张骞文
Owner XIAN AIRCRAFT IND GROUP
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