中文摘要：

对于具有种类多、高精度和高频响伺服控制要求的非圆截面零件加工，其工件变速及进给技术对加工精度影响很大。本文介绍了非圆加工技术的国内、外发展现状，综述了近年来广泛应用的一种新型伺服驱动进给装置——直线电动机的基本原理及特点，建立了椭圆形典型非圆零件表面磨削加工的数学模型，并利用PMAC（Programmable multi - axis controller）时基控制法及变速控制，进行了椭圆零件表面精密磨削加工试验，为推动直线电动机及PMAC在高速高精度数控机床中的应用打下基础，对非圆零件的磨削加工具有深远意义。

英文摘要：

To the manufacture of non - circle section parts, the key technique about feed and shift has significant influence on precision. The status quo of the manufacture of non - circle section parts was introduced. The basal principle and specialty of linear motor was introduced simply in home and broad. The modehng of the grinding of non - circle section parts was done. In the precise man- ufacture experiment of elliptic parts surface, the problems of linear motor＇ s servo control technology and anti - magnetism were researched by using time - base method and shift control of PMAC. The results of research promote the application of linear motor in the high - speed precise NC machine tools. It is significant for the manufacture of non - circle section parts.