Weld line shift controlling method and controller for laser plate-welding formation

A technology of laser tailor welding and control method, which is applied in the field of mechanical processing, can solve the problems such as the decline of formability, achieve the effect of large clamping force, prevent wrinkling of sheet metal, and achieve constant clamping force

Inactive Publication Date: 2003-03-19
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0009] The purpose of the present invention is to provide a method and device that can effectively control the movement of the weld seam in the stamping forming of the las...

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  • Weld line shift controlling method and controller for laser plate-welding formation
  • Weld line shift controlling method and controller for laser plate-welding formation

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Embodiment Construction

[0020] The invention is used for single-action press forming, and can also be used for double-action press forming. The following takes double-action press stamping forming as an example, combined with the attached figure 1 The details of the welding seam movement control method and device proposed by the present invention will be described. The mold is installed on a double-action press, and consists of a punch, a die 10, a binder ring, a punch backing plate 2, a blank holder backing plate 3, a weld clamping device, and a drawbead 9, among which The punch is composed of the punch left 1, the punch right 6 and the height difference adjusting piece 5 of the step surface of the punch, and the blank holder is composed of the left 14 of the binder ring, the right 7 of the binder ring and the height difference adjusting piece 5 of the step surface of the blank holder The welding seam clamping device is composed of a welding seam clamping rod 12 and a nitrogen cylinder 11; the lase...

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Abstract

The present invention is weld line shift controlling method and controller for laser plate-welding formation mainly used in forming car body coverage part. There are three weld line shift controlling methods including: stepped surface in formed part of combined hold-down ring and male mould resulting in enough hold-down force to reduce the shift of weld line; using the clamping force produced by the nitrogen cylinder to clamp weld line for less shift; and drawing ribs reasonably distributed in the material holding plane of the mold to control the deforming flow of side plates. The said methods can control the weld line shift and reduce break and crinkle in plate.

Description

Technical field [0001] The invention relates to the field of mechanical processing, in particular to a method and a device for controlling weld seam movement in laser tailor welded blank forming, and is mainly used in occasions where laser tailor welded blanks are used to stamp and form vehicle body panels. The method and the device thereof can well control the movement of the welding seam during the forming process and the cracking and wrinkling of the sheet metal caused thereby. Background technique [0002] Traditionally, there are two stamping forming methods for automotive body panels: separate forming and integral forming. The separate forming method is flexible and easy to implement, but the number of parts is large, which increases the stamping cost and the weight of the vehicle body; the cover parts obtained by the integral forming method have good rigidity, but cause excessive material selection in some parts and increase the weight and cost of the vehicle body. H...

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Application Information

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IPC IPC(8): B21D22/02B21D22/22B23K37/047
Inventor 陈炜杨继昌仲志刚
Owner JIANGSU UNIV
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