Point heat source composite formation method for bending

A compound forming and bending point technology, applied in the field of sheet metal structural parts, can solve the problems of leaving damage on the surface of the workpiece, difficulty in manufacturing automation, etc., achieve good shapeability, overcome damage or even destruction of formed parts, and reduce deformation resistance.

Inactive Publication Date: 2008-01-09
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, "manual hammering" and "pimp whipping" often rely on the experience of the processor, and it is not easy to realize manufacturing automation
In addition, "manual hammering" and "pimp whipping" are likely to leave damage on the surface of the workpiece and become a safety hazard

Method used

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  • Point heat source composite formation method for bending

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Embodiment Construction

[0013] The present invention can be divided into two working schemes of forming and fine adjustment. The so-called forming scheme is to input a point heat source energy to the difficult-to-deform part of the part while bending (rolling) forming. When this method is used for forming, the thermal energy converted from the energy of the point heat source can not only reduce the deformation resistance of the material in the action area of ​​the point heat source, but also assist the forming of the part through the non-uniform thermal stress field established in the thickness direction of the part, so it can significantly improve the above-mentioned The amount of bending forming of formed parts as well as forming efficiency and forming accuracy. Hard-to-deform parts can be obtained by computer simulation of formed parts. The so-called fine-tuning scheme is to input point heat source energy into the corresponding elastic internal energy concentration area for parts that are formed ...

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Abstract

The invention discloses a bending point heat source combined shaping method, comprising the steps of: 1). making simulated machining on blanks by computer platform and prejudging local region difficult to shape; 2).by step 1), obtaining point heat source machining parameters; 3). As machining, controlling point heat source for combined machining by computer control system according to the parameters in step 2); 4). during machining in step 3), blank state sensor feeds stress, strain and other real-time monitored data back to the control system. And it can overcome the defect of possibly damaging shaped pieces, even destroying them.

Description

technical field [0001] The invention relates to a bending forming method of sheet metal structural parts, especially difficult-to-form sheet metal structural parts with large size and complex structure shape. Background technique [0002] There are such types of sheet metal parts in engineering, such as aircraft skin and overall (integrated skin and support ribs) panel parts, rocket integral fuel tank parts, ship side and deck parts, and car coverings, etc. , It needs to be formed by bending or rolling. Roll bending is another form of bending, which means that the formed part can rotate with the support roll while being bent. [0003] Press bending or roll bending is the main method of forming wall panels at present. The method uses a three-point bending method to form the wall plate, the wall plate is supported by two supporting points, and the loading device controls the pressure head to load on the predetermined position on the wall plate. The siding undergoes plastic d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/02
Inventor 陈光南王秀凤罗耕星彭青吴臣武
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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