Study On Quality Analysis And Improvement Of Large-format Laser Drilling

Laser drilling is one of the application areas of laser processing.The high-energy laser beam burns the surface of the workpiece through a controlled light path to vaporize and evaporate the material to form a hole.Because of its advantages such as high speed,high efficiency,good economic benefits,and wide application fields,it has become more and more widely used in industrial production.With the in-depth application of laser drilling in the aerospace,weapons,and electronics industries,the requirements for laser drilling quality are getting higher and higher.This paper takes large-format glass drilling as the research object.Based on the analysis of the problems in the laser drilling process,a comprehensive quality evaluation system for laser drilling is established and a machine vision-based drilling quality inspection method is proposed.The optimization and improvement of laser drilling process parameters are completed with the goal of improving the quality of drilling.First,it analyzes the problems existing in the large-format laser drilling process,discusses and analyzes the causes.Secondly,aiming at the problem of single drilling quality evaluation method and means,a drilling quality evaluation system combining qualitative and quantitative indicators is proposed.Perform qualitative analysis on uneven burning,melting of glass,cracks in glass,and no penetration of glass drilling during the glass drilling process,and quantitatively calculate hole diameter deviation,hole out-of-roundness,hole taper,and hole inner wall roughness.Based on the drilling quality evaluation system,a comprehensive quality evaluation method is designed to quickly and accurately judge the drilling quality.Then,based on the drilling quality evaluation system,the drilling quality inspection method based on machine vision is adopted.For qualitative indicators,an automatic identification process of qualitative judgment based on sample learning is designed.For quantitative indicators,an efficient and non-destructive automatic detection of hole inner wall roughness and an automatic calculation process of quantitative indicators for size detection are designed.It provides a data source for analyzing the quality of punching.Finally,with the goal of improving the quality of drilling,a method for optimization and adjustment of laser drilling process parameters is proposed,which combines single-factor experimental method and binary method.By designing orthogonal experiments and using analysis of variance for data analysis,a more suitable combination of optimal process parameters is obtained,which solves the problem of unreasonable setting of process parameters of key factors affecting the quality of drilling,and improves the quality of laser drilling.Experiments have verified the effectiveness of the drilling quality evaluation method and drilling process parameter optimization method proposed in this paper.Based on the large-format laser drilling quality analysis and research quality improvement process,this paper proposes a set of drilling quality evaluation methods and drilling process parameter optimization adjustment methods.It can significantly improve the production efficiency of the punching process and bring higher economic benefits to the enterprise.And promote the further application of laser drilling technology in specific industries,and provide a valuable reference for the application and development direction of laser drilling technology in the field of photovoltaic and electronic products.