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微米千分尺的结构大部分与外径千分尺相同,只有微分筒部分不同。图1所示是上海量具刃具厂1984年生产的微米千分尺,它的微分筒分为两节:一节是固定微分筒,在固定微分筒的内孔上有销与固定套管上的键槽滑配,所以固定微分筒只能轴向移动,而不能旋转。固定微分筒的一端外圆做成圆锥斜面,以它的斜面棱边作为固定套管上的整数毫米刻线的读数指示线。在固定微分筒的另一端外径上刻有10条游标线与活动微分筒上的刻线组成无
Micrometer micrometer structure and most of the same diameter micrometer, only the differential cylinder part is different. Figure 1 shows the micrometer micrometer manufactured by Shanghai Measuring & Cutting Tool Factory in 1984. Its differential cylinder is divided into two sections: one is a fixed differential cylinder, and the inner cylinder of a fixed differential cylinder is equipped with a pin and slide groove on a fixed sleeve With fixed, so fixed axial cylinder can only move, but can not rotate. One end of the fixed cylinder made of cylindrical cone tapered surface, with its beveled edge as a fixed sleeve on the integer millimeter mark reading indication line. On the other end of the fixed differential cylinder engraved with the outer diameter of the 10 vernier line and the movable micro-cylinder on the score composition