论文部分内容阅读
一、概述 本系统是为加工电视或电影摄象机变焦距凸轮精密曲线槽而研制,由于槽的精度要求很高,(加工后曲线与理论曲线误差小于10μ～15μ,光洁度26)。过去,这类凸轮多是靠进口,或者,在坐标镗床上取三千多个点,一点一点镗成这条曲线,效率很低,质量也不一定能保证,因此,必须研制具有较小位置误差和跟踪误差的闭环控制系统,控制高精度铣床进行加工。 目前国内作为闭环系统精密检测部件,多用感应同步器,使用光栅者多属用于精密测量装置和点位控制,它作为闭环位置检测部件,从而构成高精度数字控制系统尚未所闻。这
I. Introduction The system is developed for machining precision cam groove of variable cam of television or movie camera. Due to the high precision of groove, the error between the processed curve and the theoretical curve is less than 10μ ~ 15μ and the finish 26. In the past, these cams are mostly imported, or take more than 3000 points in the coordinate boring machine, bit by bit boring this curve, the efficiency is very low, the quality is not guaranteed, therefore, must be developed with more Small position error and tracking error closed-loop control system, control of high-precision milling machine for processing. At present, the closed-loop system as a precision detection components, multi-use induction synchronizer, the use of grating are mostly used for precision measurement devices and point control, which as a closed-loop position detection components, which constitute a high-precision digital control system has not been heard. This