With the development of society and economy, as well as the actual production of the strong demand, the traditional manufacturing has undergone a fundamental change, with numerical control technology based on modern manufacturing technology to occupy an important position. This article through the base parts of the structure analysis, using Auto - CAD software to the base part drawing design, and process analysis, determine the machining process. Finally, according to the parameters, using Mastercam ／ Mill9 on parts of the program for entity authentication, automatic processing program for processing export. The auto- matic processing program for machining simulation.%随着社会经济的发展和生产实际的强烈需求，传统的制造方式已发生了根本性的变革，以数控技术为主的现代制造技术占据了重要地位．文章通过底座零件的结构分析，利用Auto—CAD软件进行底座零件图设计，而后进行工艺分析，确定零件的加工工艺；之后根据工艺参数，运用Mastercam＼Mi119对零件程序进行实体验证，后处理导出自动加工程序；再对自动加工程序进行仿真加工．
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