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Method for skin stretch-forming and locating with flexible multipoint mould

A multi-point mold and skinning technology, applied in the field of skinning, can solve the problems of poor positioning accuracy and difficult positioning, and achieve the effect of reducing manual errors and improving positioning accuracy and efficiency

Active Publication Date: 2014-01-08
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the existing technical problems of poor positioning accuracy and difficult positioning after skin stretching

Method used

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  • Method for skin stretch-forming and locating with flexible multipoint mould
  • Method for skin stretch-forming and locating with flexible multipoint mould
  • Method for skin stretch-forming and locating with flexible multipoint mould

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Embodiment Construction

[0033] The method for skin stretching and positioning using a flexible multi-point mold according to the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] First introduce the flexible multi-point mold skin stretching device used in the method of adopting a flexible multi-point mold for skin stretching and positioning, including a multi-point mold 11, which contains a plurality of punches 115, each The heights of the tops of each punch 115 can be adjusted individually, and the skin pulling device of the flexible multi-point mold transition profile also includes a mechanical arm 15 and a clamp 14 for clamping and stretching the skin 12, mechanically One end of the arm 15 is provided with a measuring device 16 and a hole marking actuator 17, and the other end of the mechanical arm 15 can be fixed to a wall or a frame or a beam, such as figure 1 with figure 2 As shown, the device can complete the stretching, posit...

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Abstract

The invention provides a method for skin stretch-forming and locating with a flexible multipoint mould. The method includes the following steps of step1, a skin stretch-forming device (10) of the flexible multipoint mould is used for skin stretch-forming; step2, after the stretch-forming is finished, a multipoint mould (11) of the skin stretch-forming device (10) of the flexible multipoint mould is regulated to a theoretical number model face of a skin (12) in shape, and the skin (12) is arranged on the multipoint mould (11) and fixed; step3, geometrical information of the skin (12) is measured; step4, the accurate position of the skin (12) is calculated, and the border characteristics of the skin (12) are determined; step5, marking out or locating is carried out on the surface of the skin (12). According to the method for skin stretch-forming and locating with the flexible multipoint mould, flexible locating can be achieved, for any sectional face characteristics, no special locating overturn plate is needed, and efficiency and locating accuracy can be obviously improved.

Description

technical field [0001] The invention relates to the technical field of skin stretching, in particular to a method for skin stretching and positioning using a flexible multi-point mold. Background technique [0002] The skin part is an important covering part of the aircraft, which constitutes the aerodynamic shape of the aircraft, and requires extremely high molding and assembly precision. The manufacture of skin parts consists of multiple processes such as stretch forming, shape inspection, edge frame cutting, surface anodization, painting, positioning and assembly. Due to the poor stiffness of the skin parts themselves, it is difficult to overcome their own gravity or the contact force of the tooling is prone to elastic deformation. In order to ensure the final assembly accuracy, the skin parts need positioning holes to ensure the positioning accuracy and assembly accuracy between multiple processes. The positioning holes are One of the key structural elements of skinned ...

Claims

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Application Information

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IPC IPC(8): B21D22/20
Inventor 李志强吴为刘宝胜
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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