Laser welding machine with follow-up and swaging functions

Abstract

The invention discloses a laser welding machine with follow-up and swaging functions, wherein a motion mechanism can drive a laser welding head to move; the laser welding head comprises a base, a welding head, a compressing wheel, a follower and a position sensing device; the welding head is positioned below the base; the compressing wheel is positioned at the lower end of the base; the circumferential outer side surface of the compressing wheel is tightly butted with a welded plate surface and rolls along the surface; the follower can rotate in the circumferential direction and can be positioned on a side wall of the welding head in a sliding manner in the vertical direction; the circumferential outer side surface of the follower is tightly in contact with the surface of the welded plate surface and rolls along the surface; the position sensing device can sense the lengthwise position of the follower and transmit to a numerical control system; the numerical control system can control the motion mechanism to drive the laser welding head to move; the plate deformation is eliminated; and the clearance between materials to be welded can be ensured; the follow-up of the laser welding head, relative to the welded plate surface can be achieved; the focus point position is kept to be constant; and the welding quality is guaranteed to be firm and stable.

Description

technical field [0001] The invention relates to a laser welding machine, in particular to a laser welding machine with functions of following and pressing. Background technique [0002] Due to its advantages of fast welding speed, small heat-affected zone, large weld depth-to-width ratio, small deformation, small residual stress, easy automation, and no need for a vacuum chamber, laser welding has gradually expanded its application range. Stitch welding can be used. Laser welding has high requirements for the gap between the plates to be welded, generally less than 0.1mm, otherwise welding quality problems such as virtual welding or desoldering will easily occur. The focus position has a significant impact on the welding quality during laser welding, and the plate to be welded often has twists, undulations, and bumps. If the deformed plate is not flattened and compacted during welding, the gap between the materials to be welded cannot be controlled, and it may resulting in...

AI Technical Summary

Problems solved by technology

The focus position has a significant impact on the welding quality during laser welding, and the plate to be welded often has twists, undulations, and bumps. If the deformed plate is not flattened and compacted during welding, the gap between the materials to be welded cannot be controlled, and it may lead to poor weld quality

The working area heats up violently during welding, and the commonly used capacitive distance sensors cannot adapt to this environment

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