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Combined reconfiguration flexible covering stretch forming mold

A stretch forming and combined technology, applied in the direction of forming tools, manufacturing tools, metal processing equipment, etc., can solve the problems of reducing tooling and shortening construction period, and achieve the effect of reducing quantity, good surface quality and high degree of modularity

Inactive Publication Date: 2008-07-16
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a combined reconfigurable flexible skin stretch forming mold to overcome the problem of too many physical molds for skin stretch forming. By adjusting the stroke of each punch, the mold has different structures. The enveloping surface is used to complete the stretch forming of various skins, so that a set of molds can complete the stretch forming of various types of skins, reducing tooling and shortening the construction period

Method used

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  • Combined reconfiguration flexible covering stretch forming mold
  • Combined reconfiguration flexible covering stretch forming mold
  • Combined reconfiguration flexible covering stretch forming mold

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Embodiment Construction

[0033] A combined reconfigurable flexible skin stretch forming die according to the present invention, as shown in Figures 1 and 2, mainly includes a shape adjustment unit, a bottom support positioning unit, a frame fastening unit and an edge fastening unit.

[0034] The shape adjustment unit 1, as shown in Figure 3, is an independent, unitized and adjustable punch movement system, which is a key component of the entire reconfigurable flexible mold. The bottom of the shape adjustment unit 1 and the bottom support positioning unit The positioning plate 7 of the frame is in contact with each other, and each shape-adjusting unit is squeezed against each other. After all the shape-adjusting units are placed, they are fixed by connecting and fastening the large side plate 3 and the small side plate 2 of the frame fastening unit. The shape-adjusting unit is applied for as an invention patent.

[0035] The bottom support positioning unit is a set of positioning and supporting devices...

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Abstract

The invention relates to a combined, reconfigurable and flexible skin stretching and forming mold which comprises a shape adjusting unit, a bottom supporting and a positioning unit, a border tightening unit and an edge tightening unit, wherein, the bottom supporting and positioning unit is composed of a positioning board which is contacted with the bottom of the shape adjusting unit, a gasket and a supporting board; a through hole of the positioning board matched with the shape adjusting unit is arranged on the positioning board; a stepped shaft hole is positioned on the supporting board and the gasket is in the shape of a long rectangular strip on which a through hole is arranged and matched with the stepped shaft hole on the supporting board; the border fastening unit is composed of a large side plate, a small side plate and a fastening screw; positioning joint faces between the adjacent large side plate and the small side plate are staggered and connected with each other by an assembly method of over-positioning; the edge fastening unit is composed of an edge block and an edge screw and tightly fastens the border fastening unit and the bottom supporting and positioning unit by screws through the edge block and the edge screw. The invention can complete stretching formation of skins of different types with good surface quality of a skin part.

Description

(1) Technical field: [0001] The invention relates to a combined reconfigurable flexible skin stretch forming die, which belongs to the field of mechanical engineering / sheet metal forming. (two) background technology: [0002] Aircraft skin parts have the characteristics of complex and diverse shapes and a wide variety of parts. Their surface quality and shape accuracy have an important impact on the overall performance of the aircraft. The skin is mainly formed by stretching (referred to as stretching). [0003] At present, solid molds are used in the process of skin drawing, measurement and trimming, so each skin part has a corresponding set of solid molds. The design and manufacture of solid molds occupy 80% of the aircraft skin manufacturing cycle , and takes up a lot of storage space, and the consumption of handling and stacking is also considerable. Therefore, the traditional mold tooling and process methods are no longer suitable for the rapid development and batch pr...

Claims

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Application Information

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IPC IPC(8): B21D37/10B21D37/12B21D22/20
Inventor 李东升罗红宇陈丽秦雁黄源
Owner BEIHANG UNIV
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