单点金刚石车削(SPDT)技术的发展为铝镜的批量化生产和应用奠定了工艺和技术基础。为减小安装预紧力、安装面不平引起的镜面变形从而保证光学像质, 总结了典型的铝镜消应力支撑结构形式及设计原则。SPDT 技术为光学辅助装配开辟了新的技术途径, 分别针对单侧单镜、双侧单镜及分离双镜的情况进行了SPDT 辅助装配设计的说明, 结合实例阐述了光学面、结构安装面、基准传递面、干涉检测参考基准面的集成式SPDT 加工实现高精度装配基准传递保证反射面之间高对准精度的流程, 该方法可提高光学系统装配效率, 缩短产品研制周期。

The development of Single Point Diamond Turning (SPDT) technique provided technologic and technical base for the mass production and application of aluminum mirrors. To ensure the image quality of the optical system, stress-caused distortion of reflective surface by mounting pretension stress and uneven mounting surfaces needed to be attenuated. Multiple typical structural shapes of the stress-relief support were demonstrated and the design principle was summarized. The SPDT technique created a new technical route to aid the optical assembly process. The design of assembly assisted by SPDT was showed in instances of reflective surfaces on unilateral side and bilateral sides in single mirror and detached double mirrors. The integral SPDT machining flow of optical surfaces, structural mounting surfaces, transferring datum and reference surfaces of interference detection linking with concrete examples implemented the transfer of high-precision assembly reference and ensured high-accuracy alignment of mirrors. This method could improve the assembly efficiency and shorten the manufacture period of optical systems.