Skin stretch-forming method with transition sectional face of flexible multipoint mould

A technology of multi-point mold and mold surface, applied in the direction of forming tools, manufacturing tools, metal processing equipment, etc., can solve the problem of a large number of molds, achieve high processing accuracy, save manufacturing costs, and achieve considerable economic benefits

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

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Problems solved by technology

[0004] In order to solve the technical problem that too many molds are required in the existing skin stretching process

Method used

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  • Skin stretch-forming method with transition sectional face of flexible multipoint mould
  • Skin stretch-forming method with transition sectional face of flexible multipoint mould
  • Skin stretch-forming method with transition sectional face of flexible multipoint mould

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Embodiment Construction

[0029] The skin pulling device for the transitional surface of the flexible multi-point mold according to the present invention will be further described in detail below in conjunction with the accompanying drawings. A skin-drawing device 10 for a flexible multi-point mold transition profile, including a mold base 1, which contains a plurality of punches 2, and the height of the top of each punch 2 can be adjusted independently. The flexible The skin stretching device for the transitional surface of the multi-point mold also includes clamps 3 for clamping and stretching the skin 4, such as figure 1 shown.

[0030] A large number of discrete height-adjustable punches are distributed in a row to fit the three-dimensional surface of the mold, so that the forming requirements of parts with different shapes can be met and multiple solid molds can be replaced. In addition, the top of the punch generates multiple transitional profiles, thereby realizing multi-pass drawing, making th...

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Abstract

The invention provides a skin stretch-forming method with a transition sectional face of a flexible multipoint mould. The method includes the following steps of step1, the appearance of an intermediate transition skin is calculated; step2, a data model of initial sectional face of an intermediate transition mould is formed; step3, skin stretch forming is carried out to form an intermediate transition skin (4); step4, a next intermediate transition mould sectional face or a final transition mould sectional face is designed; step5, step3 and step4 are repeated in sequence until the final skin (4) is formed. According to the skin stretch-forming method with the transition sectional face of the flexible multipoint mould, a plurality of scattered punch bars with adjustable heights are used for fitting the three-dimensional sectional face of the mould, and therefore forming requirements of parts with different sectional faces are met.

Description

technical field [0001] The invention relates to the technical field of skin stretching, in particular to a skin stretching method using a flexible multi-point mold transition surface. Background technique [0002] The shape of skin parts is complex, and many parts have large curvatures that are difficult to form. For example, the air intake skin is difficult to stretch and form in place at one time, and multiple stretches are required. The curvature of the drawing die surface required for each pass of stretching changes from small to large, and the die surface changes from simple to complex. Each pass of stretch forming requires a transitional stretch die. Therefore, more than two drawing dies are required to form a part, which greatly increases the number of forming dies and the cost of die processing, and reduces the processing efficiency of the part. [0003] In traditional mold skin drawing, when faced with complex shape parts with large curvature and difficult to form,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/20B21D37/10
Inventor 李志强吴为张荣霞曾元松
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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