研磨修带法加工轴对称二次非球面

Grinding and Trimming Method for Processing Axisymmetric Two Aspheric Surfaces

非球面零件由于其在矫正像差和简化光学系统方面的优势,越来越被广泛的应用于现代光电仪器上,其中应用的最广泛的非球面零件要属轴对称二次非球面。文中研究的是国内常用的加工轴对称二次非球面的方法——研磨修带法,即在最接近比较球面的基础上修磨非球面的方法。主要讲述了由非球面方程入手,得到它的最接近比较球面及各带区的偏离量,确定加工方案,运用适当的修带工具得到所需的非球面的过程。

For the advantages of correcting aberration and simplifying optical system, aspheric parts are widely used in modem optical instruments, and one of the most widely used aspheric part is two axisymmetric aspheric surface. The method of grinding and trimming for processing two axisymmetric aspheric surfaces is researched, which is the method of grinding and trimming aspheric surfaces based on recent spherical surface. From the aspheric equation, the recent spherical surface and the deviations of the zones are obtained to determine the processirig scheme. And the required aspheric process is obtained using appropriate trimming tools.