光学分度台在计量工作中以往较少采用。近年来随着精密零件的增多,光学分度台的应用也普遍了。像图1所要求的零件用一般精度的测角仪或工具镜是难以完成测量任务的,我厂利用光学分度台(图2),借助于其它辅具进行测量,实践证明,线值测量误差可在0.005mm以内,角度误差可在1′以内。现将典型零件五项被测项目的测量方法介绍如下。 Optical sub-table in the measurement of less used in the past. In recent years, with the increase of precision components, the application of optical indexing table is also common. Parts like the one shown in Fig. 1 are difficult to complete the measuring task with the general precision goniometer or tool mirror. Our factory uses the optical indexing table (Figure 2) to make measurements with other aids. It has been proved that the line measurement The error can be within 0.005mm, the angle error can be within 1 ’. The typical parts are measured five items measured as follows.