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Cracking-prevention control method of vehicle oil-tank bracket tension

A technology of an automobile fuel tank and a control method is applied in the field of fuel tank brackets to achieve the effects of reducing the strength of workers, saving manpower and material resources, and simple operation

Inactive Publication Date: 2010-11-03
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a new processing method based on the reasons for the bending and cracking of the fuel tank bracket and the deformation conditions, so as to control the cracking of the automobile fuel tank bracket when it is stretched

Method used

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  • Cracking-prevention control method of vehicle oil-tank bracket tension
  • Cracking-prevention control method of vehicle oil-tank bracket tension

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Embodiment Construction

[0043]The anti-cracking control method when the automobile fuel tank bracket is stretched provided by the present invention is based on: the bracket material has a certain yield strength, and when it exceeds its yield strength when stretched, the material will crack at the weak place, In severe cases, fracture will occur. At the same time, if there is stress concentration during the stretching process of the material, or if the stretching speed is too fast, the material cannot keep up with the strain deformation, and the material will also crack at this time. Therefore, it is necessary to make the material When stretching within the yield strength range, the material should be relieved of the stress. It is necessary to perform a step-by-step stress release on the blank of the automobile fuel tank bracket when it is pressed and formed.

[0044] The control method for anti-cracking when the automobile fuel tank bracket is stretched provided by the present invention is specificall...

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Abstract

The invention provides a control method for preventing cracking when an automobile oil tank bracket is stretched. Concretely, the material of the automobile oil tank bracket is stretched for multiple times within the allowed range of yield strength; the material is provided with due stress release for each stretching, so as to prevent that the feeble part of the material cracks or breaks; accordingly, the automobile oil tank bracket is manufactured. The control method solves the processing cracking problem of the product well by improving the technical process for punching and forming the automobile oil tank bracket and has the advantages of simple operation, ensured product quality and reduced cost, etc.

Description

technical field [0001] The invention relates to the field of fuel tank brackets, in particular to a control method for preventing cracking when an automobile fuel tank bracket is stretched. Background technique [0002] For a long time, when Schindler produced fuel tank brackets, the formed products had cracks, as shown in the picture on the right. Because of this defect, we had to add welding and grinding processes, that is, to weld the cracks together by welding. Then use grinding method to remove the welding tumor, in order to achieve the purpose of smooth and beautiful surface. Therefore, the bracket produced by it has the following deficiencies: [0003] 1. Due to the rapid deformation of the metal material during the pressing process, the internal stress distribution of the material is very uneven, and then the forming fixture is used to force the gap to be closed and welded, and the uneven internal stress distribution is even more serious . The result is that the h...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P25/00B21D22/20
Inventor 徐劲力覃瑞明韩少军夏江敬江征风张晓帆
Owner WUHAN UNIV OF TECH