五轴联动数控展成电解磨床原理与控制

Principle and control of 5-axis numerical control electro-chemical contour evolution grinder

为解决整体叶轮叶片型面的精加工难题,进行了五轴联动数控展成电解磨削整体叶轮的基础研究.根据数控展成电解磨削整体叶轮叶片型面这一加工方法的特点,在分析了数控展成电解磨削整体叶轮原理的基础上,对磨削系统的结构与运动进行了总体设计,提出了经济型多轴数控系统及其联动控制方法,建立了电解磨削非平行直纹展成曲面的数学模型,开发了五轴联动数控展成电解磨削自动数控编程系统,对航空发动机整体叶轮的叶片型面进行了电解磨削.五轴联动数控展成电解磨削技术为整体叶轮叶片型面的精加工提供了一种新的加工手段.

To solve the problem of precisely machining of integral impeller blade, research on 5- axis Numerical Control Electro-chemical Contour Evolution Grinding （NC-ECCEG） was done. According to the features of method of NC-ECCEG, on the basis of analysis on principle of NC- ECCEG, the design of structure and movement of grinding system is conducted. Furthermore, combined multi-axis NC system and its linkage control are presented and the mathematical model of electrochemical contour evolution grinding impeller blade by unparallel line was erected. In addition, an auto-programming system in 5-axis NC-ECCEG was developed. It had been applied to grinding integral impeller and now 5-axis NC-ECCEG technology is a new method for final finishing of integral impeller blade.