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Calculation method of ablation depth based on laser energy dynamic distribution model

A distribution model and energy distribution technology, applied in laser welding equipment, manufacturing tools, complex mathematical operations, etc.

Active Publication Date: 2020-09-29
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method effectively solves the problem of dealing with the energy distribution of pulsed laser discrete spots

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  • Calculation method of ablation depth based on laser energy dynamic distribution model
  • Calculation method of ablation depth based on laser energy dynamic distribution model
  • Calculation method of ablation depth based on laser energy dynamic distribution model

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Embodiment Construction

[0063] The specific implementation manner of the present invention will be described in detail in conjunction with the technical scheme and the accompanying drawings.

[0064] During pulsed laser processing, due to the characteristics of discrete distribution of laser energy and the change of geometric characteristics of the processing track, the single pulse laser energy distribution model or the simulation results of energy distribution cannot accurately describe the dynamic distribution of material surface energy. The maximum ablation depth solution method of the dynamic distribution model, according to the geometric variation law of the pulse laser spot moving track and the discrete distribution characteristics of the pulse laser energy, the dynamic distribution model of the part surface energy during pulse laser processing is established, and the pulse laser processing process is described. The dynamic distribution law of energy in the pulse laser processing, and this dyna...

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Abstract

The invention discloses a laser energy dynamic distribution model-based ablation depth solving method, belongs to the field of non-traditional machining, and relates to a laser maximum ablation depthsolving method based on a part surface energy dynamic distribution model during pulse laser machining. The method comprises the steps of firstly performing integration on energy distribution in a laser feeding direction according to an energy distribution equation of Gaussian pulse laser on a girdling plane, thereby obtaining an energy distribution equation of single pulse laser in a vertical feeding direction; according to geometric features of to-be-machined parts and laser machining process parameters, determining a geometric change law of a laser spot moving track and a discrete distribution feature of pulse laser, and obtaining the part surface energy dynamic distribution model during the pulse laser machining; and according to a laser ablation thermal energy balance law, giving out the laser maximum ablation depth solving method based on the part surface pulse laser energy dynamic distribution model. The method effectively solves the difficult problem of handling of a pulse laserdiscrete spot energy distribution problem, and is accurate in solving and easy in operation.

Description

technical field [0001] The invention belongs to the field of special processing, and relates to a method for solving the maximum laser ablation depth based on a dynamic distribution model of part surface energy during pulse laser processing. Background technique [0002] As a non-contact special processing technology, laser processing has the advantages of high processing efficiency, no tool wear, and no processing stress. It is widely used in surface processing, additive manufacturing, cutting and other fields. During the pulse laser processing of metal materials, the laser energy is continuously accumulated on the surface of the metal material, and the material absorbs the pulse laser energy, heats and melts, and realizes the removal of the material. Therefore, in the process of pulsed laser processing, the energy distribution law of the part surface is an important process parameter in the laser processing process. The accurate description of the energy distribution law i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/11B23K26/362
CPCB23K26/36G06F17/11
Inventor 马建伟贺广智贾振元张宁王嘉丞刘巍
Owner DALIAN UNIV OF TECH
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