Multi-point loading control curved surface stretch forming device

A stretch forming, multi-point technology, applied in the field of stretch forming of large three-dimensional curved parts, can solve the problems of reduced material utilization rate, and achieve the effects of low manufacturing cost, material saving and simple structure

Active Publication Date: 2017-06-13
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When forming a curved surface with a relatively large transverse curvature, in order to ensure that the sheet metal and the mold are completely

Method used

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  • Multi-point loading control curved surface stretch forming device
  • Multi-point loading control curved surface stretch forming device
  • Multi-point loading control curved surface stretch forming device

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Experimental program
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Embodiment Construction

[0025] The structure, working process and implementation steps of the present invention will be further described below in conjunction with the accompanying drawings.

[0026] Such as figure 1 , figure 2 As shown, the multi-point loading controlled curved surface stretch forming device of the present invention is mainly composed of a fuselage frame, a mold mounting seat 2, a loading control unit group and a loading control auxiliary mechanism distributed on both sides of the mold mounting seat.

[0027] The fuselage frame comprises two support bases 4 and two cross columns 5, the longitudinal section of the support base 4 is "L" shape, comprises a horizontal plate in the horizontal direction, a vertical plate in the vertical direction at one end of the horizontal plate and A short vertical plate in the vertical direction at the other end of the horizontal plate; the two support bases 4 have the same structure and are arranged symmetrically, and the two horizontal columns 5 a...

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Abstract

The invention provides a multi-point loading control curved surface stretch forming device. The device is mainly composed of a machine body framework, a mold installing base, a loading control unit set and a loading control auxiliary mechanism, wherein the loading control unit set and the loading control auxiliary mechanism are distributed on the two sides of the mold installing base; the loading control unit set is composed of a plurality of loading control units; each loading control unit comprises a clamping forcep with the movement capable of being independently controlled, a flexible belt with the work length adjustable, a movable slider capable of moving up and down, a vertical lead screw and a vertical movement control motor; the load in plate material stretch forming is applied by the clamping forceps; the movement trajectories of the clamping forces are controlled through the loading control units; a plate material and a stretch forming mold molded surface can be closely attached in real time, and the optimal curved surface stretch forming effect and an accurate stretch-forming curved surface part are obtained; and the device is adopted for forming the curved surface part, various defects in the curved surface forming process can be avoided, the excessive materials of the process can be remarkably reduced, and materials are saved.

Description

technical field [0001] The invention relates to a curved surface stretch forming device controlled by multi-point loading, which belongs to the field of metal plastic processing and is suitable for stretch forming of large three-dimensional curved surface parts. Background technique [0002] Stretch forming is an important forming method for large three-dimensional curved surface parts, and has been widely used in aviation manufacturing, high-speed trains, ships and modern buildings. The traditional stretch forming process mainly adopts integral clamps. The displacement experienced by the end of the sheet clamped by the clamps is the same, and the sheet material does not actively deform with the mold surface in the transverse direction. When forming a curved surface with a relatively large transverse curvature, in order to ensure that the sheet metal fits perfectly with the mold, a sufficiently long suspension section is usually required, which leads to a great reduction in ...

Claims

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Application Information

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IPC IPC(8): B21D22/22
CPCB21D22/22
Inventor 蔡中义赵轩孙丽荣迟佳轩闫雪萍
Owner JILIN UNIV
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