林业科学2017，Vol.53Issue(8)：163-168,6.DOI:10.11707/j.1001-7488.20170819
数控激光加工试验台设计与加工斑点计算理论
Design of Numerical Control Laser Processing Test Bench and Calculation Theory of Processing Speckle
摘要
Abstract
[Objective]In order to provide a new theory and method for the processing of wood with nanosecond laster technology,the method of modern laser processing is applied to process wood,and the test bench with numerical control nanosecond water-jet guided laser beam is designed in this study.[Method]Bassed on the anatomy characteristics of softwood and the processing principle of envelope forming of the softwood with nanosecond water-jet guided laser beam,the structure of the test bench is investigated. The open loop motion control chain of test bench is established based on the determination of structure form. Then,the kinematic model of nanosecond water-jet guided laser beam processing is proposed based on the motion control chain. Furthermore,the softwood STL model is also established and the calculation theory of correct spot points is obtained. Those are ready for the development of programming system of nanosecond water-jet guided laser processing test bench. The control system of nanosecond water-jet guided laser processing test bench is established using the two level open control system with IPC and PMAC104.[Result]According to the configuration of the nanosecond water-jet guided laser processing test bench,the structure of the laser processing test bench for COZY is determined. Then its kinematic model is established as r0= [y·cosγ,y·sinγ,1 + z]. Through the STL model,a series of laser beam contact points are obtained,and the position vector of the spot is calculated. Based on the analysis of overcut and undercut of laser processing,the spot file with the processing precision is selected.[Conclusion]Based on the motion analysis of laser processing with a nanosecond water-jet guided laser beam,the structure configuration analysis of the nanosecond water-jet guided laser processing test bench,and the calculation theory of sport speckle in nanosecond laser processing,the test bench with COZY configuration of the softwood controlled nanosecond laser processing is completed.The kinematic model of the nanosecond water-jet guided laser beam machining is also established and further verified by the laser processing experiment. The control system of the test bench is developed,and the control function of the laser beam system is tested by the real test bench.关键词
木材/纳秒水导激光加工/运动学模型/过切与欠切Key words
wood/nanosecond water jet guided laser processing/kinematic model/overcut and undercut分类
轻工纺织引用本文复制引用
马岩,宋明亮,李虎,杨春梅..数控激光加工试验台设计与加工斑点计算理论[J].林业科学,2017,53(8):163-168,6.基金项目
中央高校基本科研业务费专项资金(2572015DB02) （2572015DB02）
黑龙江省自然科学基金项目(C2016013). （C2016013）
