1　引言阀体是阀类控制器上使用的通用型零件 ,市场需求量大。该类零件结构复杂、加工精度高、工艺过程长。多年来由于设备陈旧、工艺落后 ,阀体质量一直是影响控制器精度的主要因素之一。为了改善落后的生产状态 ,并结合行业特点、我们研究开发了阀体自动加工组合机床 ,并把Ｐ 1 Introduction The valve body is a common type of valve used on the controller, the market demand. Such parts complex structure, high precision, long process. Over the years due to outdated equipment, technology behind, valve body quality has always been one of the main factors that affect the accuracy of the controller. In order to improve the backward production status, combined with the characteristics of the industry, we have developed a valve automatic machining combined machine tools, and P