KDP晶体超精密切削各向异性的理论研究  

Theoretical Research on Anisotropy of Ultra-precision Machining KDP Crystal

作　　者：董申[1] 张新洲[1] 王景贺[1] 

机构地区：[1]哈尔滨工业大学

出　　处：《工具技术》2005年第11期19-22,共4页Tool Engineering

基　　金：国家自然科学基金资助项目(项目编号:50405011);黑龙江省自然科学基金资助项目(项目编号:E2004-26);武器装备预研基金资助项目(项目编号:51418020201HIT0116)

摘　　要：KDP晶体作为优质的非线性光学材料被广泛应用于“惯性约束核聚变”固体激光器中,且被赋予相当严格的制造精度。本文利用剪切变形比能最大及单晶材料不同晶面晶向剪切弹性模量不同的原理,结合超精密切削模型,从理论上计算出不同晶面、不同晶向及不同刀具前角超精密切削条件下的剪切角,得到其在不同切削条件下的变化规律,并由此解释了切削加工中由KDP晶体各向异性所导致的工件表面粗糙度的各向异性。The Potassium dihydrogen phosphate （KDP） crystals are used as key components with high machining precision in high power density solid-state laser for inertial confinement fusion （ICF）. A theoretical model for calculating the cutting angle with different crystal planes, orientations and tool orthogonal rakes are described in this paper. It is built with the ultra-precision cutting model by the principle of the maximum specific energy of shear deformation and the mechanism of change of the shear modulus with different crystal planes and orientations. At the same time, the variation regularity of the cutting angle with different cutting condition is obtained. Through this model the phenomenon of the anisotropy of the surface roughness on the work piece can be explained.

关 键 词：各向异性 KDP晶体 超精密加工 剪切角 

分 类 号：TG506[金属学及工艺—金属切削加工及机床] O734[理学—晶体学]