Simulation of ultra-precision cutting process of KDP crystal in ductile mode

作者：Dan Li · 发表于：Guangdian gongcheng · 年份：2005 · 被引用次数：2 · 研究领域：Advanced Surface Polishing Techniques、Metal and Thin Film Mechanics、Acoustic Wave Resonator Technologies

A method combining indentation test with finite element simulation is proposed to obtain the ductile parameters of KDP crystal by comparing indentation depth with finite element simulation depth. A finite element model for cutting KDP crystal in ductile mode is established. The effect of rake angle and cutting depth on cutting process of KDP crystal is simulated by the model. The simulation result shows that when the front rake of the tool is about -40° the surface quality of the workpiece will be optimum. The study also discovers that when the radius of tool edge is 80nm the minimum thickness of cutting is within a range of 10nm-30nm with a ratio of 0.96.between normal cutting force and main cutting force. The conclusion is very important for keeping an ultra-smooth KDP crystal surface.