Flexible stretch-forming device and method for carrying out stretch-forming on plate by utilizing same

A flexible and sheet material technology, applied in the field of flexible drawing devices, can solve the problems of poor drawing precision, achieve the effects of improving forming precision, improving plasticity, and reducing deformation resistance

Inactive Publication Date: 2014-01-01
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of poor drawing accuracy of the existing flexible drawing device with reconfigurable unidirectional continuous mold surface, the present invention provides a flexible drawing device

Method used

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  • Flexible stretch-forming device and method for carrying out stretch-forming on plate by utilizing same
  • Flexible stretch-forming device and method for carrying out stretch-forming on plate by utilizing same
  • Flexible stretch-forming device and method for carrying out stretch-forming on plate by utilizing same

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Embodiment Construction

[0027] refer to figure 1 -5. This embodiment is used for electromagnetic induction heating assisted flexible drawing of 2024 aluminum alloy sheet material with a size of 2000mm×260mm and a thickness of 2mm, including an industrial robot 1 of a forming device, a heating forming head 2, a power supply 3, and a multi-point mold 4 , nail post 5, polyurethane elastic pad 6, stretching machine jaw 8 and standard parts such as bolts.

[0028] The nail column 5 of the multi-point mold is installed on the base of the multi-point mold 4, the polyurethane elastic pad 6 is positioned above the multi-point mold nail column 5, and the lower surface of the polyurethane elastic pad 6 and the nail head of the multi-point mold nail column 5 form Laying discrete curved surfaces, the sheet material 7 is located above the polyurethane elastic pad 6, the lower surface of the sheet material 7 is bonded to the upper surface of the polyurethane elastic pad 6, the jaws 8 of the drawing machine are resp...

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Abstract

The invention discloses a flexible stretch-forming device and a method for carrying out stretch-forming on a plate by utilizing the flexible stretch-forming device and solves the technical problem that the stretch-forming accuracy of a flexible stretch-forming device for the molded surface of a reconfigurable unidirectional continuous die is low. The technical scheme includes that the flexible stretch-forming device comprises an industrial manipulator, a heating forming head, a power supply, a multipoint die, a nail post and a polyurethane elastic cushion. The nail post is mounted on the base of the multipoint die, the polyurethane elastic cushion is positioned above the nail post, the lower surface of the polyurethane elastic cushion is attached to the discrete surface formed by the nail head of the nail post, the plate is positioned above the polyurethane elastic cushion, the lower surface of the plate is attached to the upper surface of the polyurethane elastic cushion, the heating forming head is positioned above the plate, and the spherical head surface of the heating forming head is contacted with the upper surface of the plate. According to the flexible stretch-forming device and the method for carrying out stretch-forming on the plate by utilizing the flexible stretch-forming device, the electromagnetic induction heating forming head is adopted to locally heat the plate in the stretch-forming process, the local heat effect of the region can reduce the deformation resistance of the plate, the plasticity is improved, the resilience value is reduced, and the forming accuracy of the plate is improved.

Description

technical field [0001] The invention relates to a flexible pulling device. It also relates to a method for drawing sheet metal by using the flexible drawing device. Background technique [0002] Drawing technology is mainly used to manufacture large sheet metal parts with gentle curvature changes. During the forming process, both ends of the sheet are clamped by the clamps of the drawing machine, and the drawing die is lifted from the workbench to contact the sheet. As the drawing die rises, the sheet is gradually attached to the drawing die. During the drawing process, the deformation of the sheet metal is close to the plane strain. Since the tensile stress is dominant and there is basically no strain gradient along the thickness of the sheet, the stress distribution in the sheet material section tends to be uniform, thereby reducing the springback and improving the forming process. the accuracy of the parts. Stretching is the main forming method of aircraft skin parts. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/20B21D37/16
Inventor 孙宝龙王永军
Owner NORTHWESTERN POLYTECHNICAL UNIV
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