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Laser Focus Offset Elimination Method

A technology of focus shifting and laser, which is applied in laser welding equipment, manufacturing tools, design optimization/simulation, etc., can solve the problems of high price and achieve the effect of reducing operating costs

Active Publication Date: 2020-06-09
HANS LASER TECH IND GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a laser focus offset elimination method for the problem that expensive optical instruments need to be used to measure the laser focus offset when the laser equipment processes the workpiece.

Method used

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  • Laser Focus Offset Elimination Method
  • Laser Focus Offset Elimination Method
  • Laser Focus Offset Elimination Method

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Embodiment Construction

[0037] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0038] Details figure 1 , The method for eliminating laser focus offset provided by an embodiment of the present invention aims to compensate the focus offset caused by thermal deformation of the lens during the processing of the workpiece by laser equipment, wherein the laser equipme...

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Abstract

The invention relates to a laser focal point offset eliminating method for eliminating focal point offsets caused by thermal deformation of a lens in the process of laser equipment, comprising a laserlight source and the lens, machining workpieces. The method comprises the following steps: a multi-physical-field coupling model of the laser equipment is built; the multi-physical-field coupling model is calculated to obtain the focal point offsets; and the focal point offsets are compensated. The laser focal point offset eliminating method builds a coupling analysis model of the laser equipmentto calculate the focal point offsets of an optical system of the laser equipment, so that an expensive optical instrument is prevented from using to detect the focal point offsets, and the operationcost is reduced.

Description

technical field [0001] The invention relates to the field of laser processing, in particular to a laser focus offset elimination method. Background technique [0002] When using laser equipment to process workpieces (for example, laser cutting, laser welding), the laser will pass through the lens before reaching the workpiece. When the laser penetrates the lens, the lens will absorb part of the laser light, causing the temperature of the lens to rise. High, as the processing continues, the heat continues to accumulate, and the temperature of the lens also gradually increases, resulting in thermal deformation of the lens. After the lens is heated and deformed, the original optical properties of the lens will change, causing the focal position of the optical system in the entire laser equipment to shift, affecting the processing effect of the workpiece. [0003] In order to obtain a better processing effect, optical instruments (such as high-power focal spot tester BeamWatch)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/17
CPCB23K26/702
Inventor 范国成万虹王燕灵蒋磊肖俊君陈根余陈焱高云峰
Owner HANS LASER TECH IND GRP CO LTD