望远镜镜面加工是很费事的,无论是透镜或是反射镜一般应经过开料、粗磨、细磨、抛光及镀膜等工艺。开料是将整块大料切剖成毛坯料。大型光学材料,一般在经过改造的大摇臂钻床有专用掏圆工具进行下料;而中小型毛坯一般用专用下料机下料。粗磨一般在专用铣磨机上用金刚石砂轮进行研磨,大型镜面的粗磨在大型立式车床上进行,只是将刀架改成磨头即可。单件加工磨料一般采用金刚石微粉。细 Telescope mirror processing is very troublesome, either the lens or the mirror should generally be open, coarse grinding, fine grinding, polishing and coating processes. Cutting is to cut the entire block into rough material. Large-scale optical materials are generally used in large-scale radial drills that have been modified to carry out blanking; and small and medium-sized roughs are generally fed by special cutting machines. Coarse grinding is generally carried out using a diamond grinding wheel on a special milling machine. The large mirror surface is ground on a large vertical lathe, but the tool holder can be changed to a grinding head. Single-piece abrasives generally use diamond powder. fine