external grinding meaning in Chinese

磨外圆
外圆磨削

Iges and step standard format and the sat format which is used in acis has been studied . according to the characters of different parts and the characters of different machine tools , a method of grinding for non - circular surface is researched , a new strategy and algorithm of non - circluar surface nc griding which based on acis is studied . a way of non - circluar surface internal grinding is realized as well as the way of non - circluar surface external grinding
论文的研究包括了以下几个方面:研究了三维几何造型引擎acis平台及其拓扑结构,探讨了iges和step等产品数据交换标准格式和acis中的sat文件格式的异同;根据零件的加工特征和机床的结构特点,研究了在内圆磨削和外圆磨削方式下,非圆曲面磨削的数控编程技术;提出了基于acis实体造型的任意非圆曲面零件的数控磨削新算法;实现了以实体造型为基础的任意非圆曲面零件的内圆和外圆数控磨削;根据零件的特征和磨削方式,生成了相应的走刀路线;实现了针对不同机床的后置处理。