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解放以来,我国自行设计制造的高精度长刻线机床均以公制为度量单位。近年来为满足外贸出口任务的要求,各地量具刃具厂都在试制英制及公、英制两用的游标卡尺。为此必须解决英制线纹照相玻璃版的刻制问题。据无锡量具刃具厂在江、浙、沪一带同行业中调查获悉,国产及从东德、苏联、瑞士进口的高精度长刻线机都无法自动刻制英制线纹尺,均须采用手摇刻线。不但质量不可靠,且费时间。例如:在一个0～4英寸的
Since liberation, China’s own design and manufacture of high-precision long-groove machine tools are metric units of measurement. In recent years in order to meet the requirements of the task of export trade, measuring tool cutting around the factory are in trial English and British and British dual-use vernier calipers. To do this we must solve the engraving problem of the British line photography glass version. According to a survey conducted in Wuxi, Zhejiang and Shanghai by the Wuxi Measuring Tool & Cutting Tool Factory, it is learned that domestic and imported high-precision long groove machines imported from East Germany, the Soviet Union and Switzerland are unable to automatically engrave English line rulers and must be hand-cranked Engraved line. Not only the quality is not reliable, and time-consuming. For example: in a 0 ~ 4 inch