单点金刚石切削是目前理想的 KDP晶体加工方法。本项目立足自主技术研发, 通过深入研究 KDP晶体的单点金刚石切削机理, 突破了超精密空气静压主轴和导轨设计及制造关键技术, 解决了气浮主轴和工作台高精度恒速直驱问题, 研制成功了超精密单点金刚石飞切机床 DFC-600A。通过工艺实验表明, 该机床能够实现大口径 KDP晶体、铝合金及聚碳酸酯等光学元件的超精密加工的需求。

Single-point diamond cutting is the best method to machine the KDP crystal. On the basis of independent study and development, the key technologies of ultra-precision gas hydrostatic spindle and guideway design and manufacturing, constant velocity direct drive technology of high precision spindle and worktable are solved and DFC-600A ultra-precision single-point diamond fly cutting machine tool is developed successfully by studying the single-point diamond cutting mechanism thoroughly. The process experiment results demonstrate that this machine tool can realize the ultra-precision machining of large-scale optical components, such as KDP crystal, aluminum alloy and polycarbonate.