激光切割蒙古栎合理技术参数组合优化  

Combinatorial Optimization of Reasonable Technical Parameters for Laser Cutting Oak

作　　者：赵洪刚[1] 孙耀星[1] 高金贵[1] 刘明利[1] 乐磊[1] 赵洪波 刘彦龙[1] Zhao Honggang;Sun Yaoxing;Gao Jingui;Liu Mingli;Le Lei;Zhao Hongbo;Liu Yanlong(Key Laboratory of Wood Material Science and Engineering of Jilin Province, Beihaa University Jilin 132013;China Energy Engineering Group Northeast No. 2 Electric Power Construction Co., Ltd. Dalian 116023)

机构地区：[1]北华大学木质材料科学与工程吉林省重点实验室,吉林132013 [2]中国能源建设集团东北电力第二工程有限公司,大连116023

出　　处：《林业科学》2017年第12期112-119,共8页Scientia Silvae Sinicae

基　　金：吉林省科技厅重点科技攻关项目(20140307022NY;20150204038NY;20170204048NY);国家自然科学基金项目(31570556;31470022);吉林省木质材料科学与工程重点实验室开放基金

摘　　要：【目的】利用激光切割蒙古栎,为了获得更好的切割效果,研究从单次切割到多次切割激光切割机的技术参数对切割缝宽和缝深变化的影响规律,为生产加工技术人员根据切割效果需求快速确定合理的技术参数提供理论依据。【方法】以激光切割机的各项技术参数为影响因素,以缝深和缝宽为切割效果目标设计试验方案,采用纵向比较和横向比较观察数据变化规律和试验数据处理,分析同次切割中不同技术参数对切割效果的影响,以及同样参数下不同切割次数对切割效果的影响。【结果】1次切割条件下,镜头高F=3 mm时,缝宽约为0.2 mm;F=7 mm时,缝宽约为0.1 mm;F=11 mm时,缝宽约为0.3 mm。2次切割条件下,镜头高F=3 mm时,缝宽为0.2~0.3 mm;F=7 mm时,缝宽为0.1~0.2 mm;F=11 mm时,缝宽为0.3~0.4 mm。3次切割条件下,镜头高F=3 mm时,缝宽约为0.3 mm;F=7 mm时,缝宽约为0.2 mm;F=11 mm时,缝宽约为0.4 mm。同次切割中,镜头高从3增加到7 mm时,缝宽逐渐缩小,镜头高大于7 mm时,缝宽开始增加,且增加速率越来越快;镜头高相同时,随切割次数增加,缝宽增加量很小。同样条件下,切割次数越多,缝深绝对值越大,但每次切割缝深增量不同。在进给速度v≤100 mm·s^(-1)、光强≤40%时,随切割次数增加,缝深增量变小,即每次切割的缝深越来越小。在v≥100 mm·s^(-1)、光强≥60%时,随切割次数增加,缝深增量虽然变大,但增加速率变小。【结论】影响缝宽的最主要因素是镜头高F,同次切割中F约为7 mm时缝宽最小,约0.1 mm,镜头高过小或过大缝宽都增加,但镜头高过大时缝宽增加速率快;多次切割会使缝宽增加,但到一定程度后不再变化。多次切割随切割次数逐渐增加,缝深增加,在中低速时增加速率逐渐降低;第1次切割合理方案为进给速度50 mm·s^(-1)、光强60%、镜头高7 mm,第2次切割合理方案为进给速度50 mm·s^(-1)、光强40%、镜头高7 mm,【Objective 】 Aiming at cutting oak by laser,the influences of single and multiple cutting technology parameters on cutting seam width and depth were investigated,in order to provide theoretical basis to quickly determine the reasonable technical parameters according to the cutting effect requirements for production processing professionals.【Method】The technical parameters of laser cutting machine were used as influence factors,and the depth and width of cutting seam were set as the target of cutting effect.The longitudinal and horizontal comparison method were applied to observe the regularity of data change and proceed experimental data handling.【Result】 The results showed that,in the case of single cutting,when lens height was F = 3 mm,the seam width was about 0.2 mm; if F = 7 mm,the width was about 0.1 mm; if F = 11 mm,the width was about 0.3 mm.In the case of secondary cutting,if F = 3 mm,the width was about 0.2-0.3 mm; if F = 7 mm,the width was about 0.1-0.2 mm; if F = 11 mm,the width was about 0.3-0.4 mm.In the case of three times cutting,if F = 3 mm,the width was about 0.3 mm; if F = 7 mm,the width was about0.2 mm; if F = 11 mm,the width was about 0.4 mm.It was observed that seam width was gradually reduced when lens height increased from 3 to 7 mm,but if the lens height was greater than 7 mm,the seam width began to increase,and the faster increasing rate was found.With the increase of cutting frequency,the seam depth increment became very small when the lens height was the same.Under the same conditions,the more the cutting frequency,the higher the absolute value of seam depth,and the increment of seam depth varied in each cutting.When the cutting speed v≤100 mm·s^（-1） and the light intensity was lower than 40%,the seam depth increment decreased with the increase of cutting frequency,i.e.the seam depth became smaller and smaller in each cutting.When the cutting speed v≥100 mm·s^（-1） and light intensity was more than 60%,with the increase of cutting frequency,the seam depth increm

关 键 词：蒙古栎 多次切割 纵向比较法 横向比较法 缝深 缝宽 

分 类 号：S784[农业科学—林学]