一、转位测量法原理双目观察变焦系统中,其变焦凸轮为一锥面,它的内侧表面上开有两条高精度封闭凸轮曲线,随着滑块在这两条曲线槽中的定向运动,实现了物镜倍数的连续变化。但由于测头无法直接伸入曲线槽中,因此,给直接测量带来困难。为此,将滑动块装入凸轮体中,然后采用转位测量法对此组合体进行综合测量。该方法的基本原理是: First, the principle of translocation measurement Binocular zoom observation system, the zoom cam as a cone, which opened on the inside surface of the two closed high-precision cam curve, with the slider in the two curved groove orientation Movement, to achieve a continuous change of the objective multiple. However, it is difficult to measure directly because the probe can not extend directly into the groove. To do this, load the slider into the cam body and then use the indexing method to make a comprehensive measurement of the combination. The basic principle of this method is: