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Press-bending laser composite forming method

A composite forming and laser technology, applied in the field of sheet metal structural parts, can solve the problems of leaving damage on the surface of the workpiece, difficult to manufacture automation, etc., and achieve the effect of helping forming, overcoming damage or even destruction of formed parts, and reducing deformation resistance.

Inactive Publication Date: 2008-03-12
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Press-bending laser composite forming method

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Experimental program
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Effect test

Embodiment Construction

[0014] The present invention can be divided into two working schemes of forming and fine adjustment. The so-called forming scheme is to input laser energy to the difficult-to-deform part of the part while forming by bending (rolling). When this method is used for forming, the thermal energy transformed by the laser energy can not only reduce the deformation resistance of the material in the laser action area, but also assist the forming of the part through the non-uniform thermal stress field established in the thickness direction of the part, so the above-mentioned formed parts can be significantly improved. The amount of bending forming, 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 laser energy to the corresponding elastic internal energy concentration area for parts formed by press bending or the above-mentioned press-bending laser composite method but whos...

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Abstract

The present invention discloses a laser compounding and forming method for bending, which includes steps below: 1) Simulating processing is carried out to billets through a computer platform and partial area hard to be formed is prejudged; 2) Laser processing parameters are obtained according to step 1); 3) Lasers are controlled to realize composite processing through a computer control system according to parameters in step 2) during mechanical processing; 4) Synchronous with the processing in step 3), a sensor for billet state measuring feeds stress, strain and other real-time monitoring data back the control system; 5) As for a fine adjustment scheme, a fine adjustment scheme is firstly confirmed according to step 1), 2), 3) and 4) and then the scheme is controlled by a computer to complete processing. The present invention applies lasers to achieve laser compounding and forming for bending during large-sized piece forming of traditional machinery, well processes parts hard to be reshaped during mechanical forming, thus eliminating possible formed piece flaw and even damages due to mechanical forming.

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 (another form of bending, the formed part can be rotated 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 deforms plastically under the load to achieve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B15/02B23K26/00
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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