Backlash compensation method for laser welding and device implementing same

Abstract

The invention belongs to the field of laser welding, and particularly relates to a backlash compensation method for laser welding and a device implementing the method. The method comprises the following steps: planning the side to be welded of the welding base metal, and planning a butt joint end surface with high straightness and flatness, and reducing the inter-plate backlash when the base metal is in butt joint; the device comprises a supporting platform as well as a frame, a compressing mechanism, a transmission mechanism, a locating mechanism and a cutter arranged on the supporting platform; the frame is positioned above the supporting platform, and the compressing mechanism capable of reciprocating up and down is arranged on the frame; the transmission mechanism is arranged at the outer side of the supporting platform and moves back and forth by driving a cutter rest provided with the cutter so as to plane the side to be welded of the base metal; and the inner side of the transmission mechanism is provided with the locating mechanism on the supporting platform. The method has good straightness and flatness in the whole process, and can meet the requirement of laser welding on the straightness and flatness of the side to be welded of the base metal; and the device has the advantages of simple structure, strong reliability, high efficiency, safe operation, and the like.

Description

technical field

[0001] The invention belongs to the field of laser welding, in particular to a gap compensation method for laser tailor welding and a device for implementing the method. Background technique

[0002] Tailored laser welding uses laser as welding energy to butt weld a number of plates with different materials, different thicknesses and different coatings. Since the diameter of the focused spot of the laser beam in laser welding is generally less than 1mm, the straightness of the plate welding edge and the cross-sectional shape of the butt end face have a direct impact on the welding quality. The straightness of the welding edge and the cross-sectional shape of the butt end face not only affect the tailor welding The size of the gap between the plates will also affect the accuracy of weld tracking.

[0003] In order to ensure the welding quality, it is usually necessary to further process the welding edge of the welding base metal before welding to improve the ...

Examples

Embodiment Construction

[0052] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0053] The gap compensation method for laser tailor welding of the present invention: planing the edge to be welded of the base metal to be welded, planing a butt end face with high straightness and high flatness, reducing the gap between the plates when the base metal is butted, and improving Seam tracking accuracy. Include the following steps:

[0054] A. Position and fix the welding base metal to prevent disturbances such as jumping and vibration during the planing process of the welding base metal, so as to ensure the processing quality;

[0055] B. Determine the amount of planing by adjusting the positioning reference of the welding base metal or the position of the tool;

[0056] C. Determine the planing angle by adjusting the attitude of the tool relative to the edge to be welded of the welding base metal;

[0057] D. Use a cutter to plan the edge t...

technical field

[0001] The invention belongs to the field of laser welding, in particular to a gap compensation method for laser tailor welding and a device for implementing the method. Background technique

[0002] Tailored laser welding uses laser as welding energy to butt weld a number of plates with different materials, different thicknesses and different coatings. Since the diameter of the focused spot of the laser beam in laser welding is generally less than 1mm, the straightness of the plate welding edge and the cross-sectional shape of the butt end face have a direct impact on the welding quality. The straightness of the welding edge and the cross-sectional shape of the butt end face not only affect the tailor welding The size of the gap between the plates will also affect the accuracy of weld tracking.

[0003] In order to ensure the welding quality, it is usually necessary to further process the welding edge of the welding base metal before welding to improve the ...

Examples

Embodiment Construction

[0052] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0053] The gap compensation method for laser tailor welding of the present invention: planing the edge to be welded of the base metal to be welded, planing a butt end face with high straightness and high flatness, reducing the gap between the plates when the base metal is butted, and improving Seam tracking accuracy. Include the following steps:

[0054] A. Position and fix the welding base metal to prevent disturbances such as jumping and vibration during the planing process of the welding base metal, so as to ensure the processing quality;

[0055] B. Determine the amount of planing by adjusting the positioning reference of the welding base metal or the position of the tool;

[0056] C. Determine the planing angle by adjusting the attitude of the tool relative to the edge to be welded of the welding base metal;

[0057] D. Use a cutter to plan the edge t...

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