摘要
针对KDP晶体超精密加工过程中出现的表面波纹度和粗糙度问题,采用二次通用回归旋转组合优化设计法及单点金刚石飞刀切削(SPDT)技术,对KDP晶体进行切削实验,对加工过程进行在线监测,利用多因素交互作用分析KDP晶体表面波纹度和粗糙度的影响规律。最后利用偏最小二乘法及lingo软件获得最佳加工工艺参数组合,即当刀具圆弧半径为9mm;转速为800 r/min;进给量为9.184μm/r;背吃刀量为21μm时,加工出KDP晶体的表面波纹度值为0.020μm,表面粗糙度值为0.017μm,对后续能够加工出更大口径(400×400)mm的高质量KDP晶体以满足航空航天领域应用具有重要的实际意义。
For the problem of surface quality of KDP crystals, the effect of process parameters on surface quality of KDP crystal was researched,the KDP crystal was machined by quadratic regression rotation optimization method and single point diamond turning technology.The experimental results were measured, the interaction factors＇ influence of process parameters on the surface roughness and waviness of KDP crystal Finally, partial least squares method and lingo software were used to obtain optimal processing program,the tool radius of 9mm; speed of 800r/min; feed rate of 9.184μm/r; turning back of 21μm With these process parameters to machine KDP crystal surface waviness is 0.020 μm, and surface roughness is 0.017μm, which lay a foundation for large-size and high quality KDP crystals to meet aerospace applications.
出处
《机械设计与制造》
北大核心
2017年第1期145-148,共4页
Machinery Design & Manufacture
基金
国家科技重大专项(201104004-042)
