KDP晶体加工中工艺参数的选择会直接影响工件的表面质量.为了获得最优的工艺参数组合,文章基于IBM SPSS Statistics 19.0软件对实验过程进行正交设计,并对试验结果进行单因变量多因素方差分析,得到了各因素对表面粗糙度的影响强弱顺序,优化出了最佳工艺参数组合,并进行KDP晶体的切削实验验证.实验结果表明:各因素对表面粗糙度影响的强弱顺序为进给量、主轴转速、背吃刀量、刀具圆弧半径;最佳的工艺参数组合为刀具圆弧半径r=9mm,进给量f=26μm/r,背吃刀量ap=17μm,转速n=300r/min;利用优化后的工艺参数进行KDP晶体切削实验,得到表面粗糙度值为Ra=0.011μm的光滑表面,获得了理想的加工效果.%The choice of process parameters will directly affect the surface quality of the workpieces in KDP crystal processing. In order to obtain the optimal combination of process parameters,the article designed the orthogonal design of the experimental process based on IBM SPSS Statistics 19.0 software and conducted the single variable and multi-factor analysis of variance for experimental results, the order of the influence of each factor on the surface roughness was obtained, and the optimal combination of process parameters was optimized, based on which the cutting experimental was taken on KDP crystal. The experimental results show that the order of the influence of each factor on the surface roughness is the feed rate, the spindle speed,the back cutting depth and the tool arc radius. The optimum combination of the process parameters is the tool radius arc r=9mm,the feed rate f=26μm/r, the back cutting depth ap=17μm, the spindle speed n =300r/min;By using the optimized process,the smooth surface and ideal processing effect are obtained with the surface roughness value of Ra=0.011μm.
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