Reversible-deformation mechanism on instrument panel beam welding fixture

Abstract

The invention discloses a reversible-deformation mechanism on an instrument panel beam welding fixture. The reversible-deformation mechanism comprises a support frame and a pressure mechanism, wherein the support frame is mounted on a bottom plate of the welding fixture. The support frame comprises a vertical plate, a front ribbed plate and a rear ribbed plate, wherein the vertical plate is vertically mounted in the middle of the upper end face of the bottom plate and forms an angle alpha with the upper end face of the bottom plate, the front ribbed plate is transversely mounted on the upper end face of the bottom plate and is perpendicularly connected in the middle of the front end face of the vertical plate, and the rear ribbed plate is transversely mounted on the upper end face of the bottom plate and is perpendicularly connected at one side edge of the rear end face of the vertical plate. The pressure mechanism comprises a pressure air cylinder, a connecting rod and a pressure head, wherein the pressure air cylinder is mounted in the middle of the rear end face of the vertical plate in a manner that a piston rod of the pressure air cylinder is upward, one end of the connecting rod is in hinge joint with the piston rod of the pressure air cylinder, the pressure head is mounted at the top of the vertical plate movably, and the rear end of the pressure head is in hinge joint with the other end of the connecting rod. The reversible-deformation mechanism is capable of applying rigid restraining force opposite to a welding direction additionally when an automobile instrument panel beam pipe is welded.

Description

technical field [0001] The invention relates to a welding jig for automobile parts, in particular to an anti-deformation mechanism on the welding jig for an instrument panel beam. Background technique [0002] The instrument panel beam spans the cockpit of the car. It is an important load-carrying mechanism on the car. It is mainly installed with car instruments, electrical components, safety airbags and steering systems. The cabin acts as a reinforcement. There are positioning pins and some heavy sheet metal brackets on the crossbeam of the instrument panel. These brackets are all welded to the pipes of the instrument panel beams. During the welding process, the instrument panel beam pipes are seriously deformed due to the high temperature of the welding arc. Serious deformation including shortening, angle change, bending deformation, etc. makes it difficult to ensure the size of the cross-beam cross assembly of the instrument panel and affects the assembly of the whole ...

AI Technical Summary

Problems solved by technology

During the welding process, the instrument panel beam pipes are seriously deformed due to the high temperature of the welding arc

Serious deformation including shortening, angle change, bending deformation, etc. makes it difficult to guarantee the size of the cross-beam cross assembly of the instrument panel and affects the assembly of the whole vehicle

At present, the deformation is generally corrected by adding anti-deformation welds. This method not only increases the weight of the vehicle, but also increases the cost, and the control of the size of the assembly is also unstable.

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