Power control method for laser repeated combination track

A technology of repeated combination and power control, which is applied in laser welding equipment, manufacturing tools, metal processing equipment, etc., can solve problems such as difficult and precise control of power output density, and achieve the effect of solving power control problems and realizing power output

Pending Publication Date: 2022-04-26
BEIJING JCZ TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the superposition of tracks and thermal diffusion areas, it is difficult to precisely control the density of power output by traditional power modulation methods

Method used

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  • Power control method for laser repeated combination track
  • Power control method for laser repeated combination track
  • Power control method for laser repeated combination track

Examples

Experimental program
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Effect test

Embodiment

[0060] Refer to attached Figure 8 As shown, set a weld reference line to be 50mm long, the jitter width to be 2mm, and the overlapping distance to be 1mm, then the software will generate 49 spiral patterns. Modify the power curve of one of the spiral patterns, and then automatically apply it to the remaining 48 patterns to achieve a power output curve that changes periodically according to the total length of the spiral.

[0061] When it is necessary to adjust the power curve of the entire curve, it only needs to be modified once. There is no need to sequentially modify the power settings corresponding to the 49 spiral patterns.

[0062] A computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of a power control method for laser repetitively combined tracks described in the present invention are implemented.

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Abstract

The invention discloses a power control method for a laser repeated combination track, which comprises the following steps of: determining a datum line along a center line of a welding seam, and configuring corresponding graph sizes according to different shapes of the welding seam to cover the width of the welding seam; configuring a corresponding power curve according to the length of a single graph; the laser spot moves along the track of the pattern, and meanwhile, the whole pattern moves along the advancing direction of the datum line with the pattern center to form a motion track of a composite curve path; copying the power curve corresponding to a single graph into other repeated graphs to form a continuous power curve on the composite curve; enabling the power curve of each pattern cycle period to be independent of a control unit; a single control unit is used as a reference unit for power modification of a laser repeated combination track, a continuous composite curve is subjected to power curve copying and expanding, power control over a complex composite curve is carried out, and therefore power output of the complex composite curve is achieved, and the power output is more uniform and accurate.

Description

technical field [0001] The invention relates to the field of laser processing, in particular to a power control method for laser repetitively combined tracks. Background technique [0002] The light beam output by the laser can change the optical path transmission path through the moving parts, so as to realize the movement of the light spot on the target processing object. Usually, parallel IO signals, PWM pulse width, analog value, communication and other means are used to realize the power adjustment of the laser. There are two main types of reference systems for adjustment: [0003] 1. Taking time as a reference, set the corresponding laser power according to the current moment; [0004] 2. With the distance as a reference, set the corresponding laser power according to the position of the spot moving track. [0005] In the application of laser welding, in order to solve the contradiction of wide weld seam and small laser spot, it is necessary to expand the coverage o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/00B23K26/70
CPCB23K26/00B23K26/702
Inventor 韩良煜温立飞
Owner BEIJING JCZ TECH
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