航天阀门多工序加工过程误差传递分析与建模  

Variation Transmission Analysis and Modeling in Multistage Machining Process of Astronautical Valve

作　　者：姚旭峰[1] 杜世昌[1] 王猛[1] 奚立峰[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《工业工程与管理》2014年第1期113-121,共9页Industrial Engineering and Management

基　　金：国家自然科学基金资助项目(51275558;50905114);上海航天基金资助项目(12GFZ-JJ08-011);上海市青年科技启明星(13QA1402100)

摘　　要：航天阀门大多属于回转体类零件,其加工过程中的装夹、定位方式不同于非回转体类零件加工中的"3-2-1"装夹定位。引入机器人学中微分运动矢量的概念,分析了车削加工中的基准误差及夹具误差,建立了基于状态空间方程的回转体类零件多工序加工误差传递模型。该模型揭示了加工误差、卡盘夹具误差和基准误差等在多工序加工过程中的产生、传递和累积规律。通过对国内航天企业某型号航天阀门壳体零件加工过程的实例分析,验证了该模型的有效性。Most astronautical valves are rotary parts. The clamping and positioning scheme m their machining processes is different from ＂3-2-1＂ positioning scheme used in the processing of non-rotary parts. By using the differential motion vector, a concept in robotics, this paper analyzes the datum error and fixture error in turning process. A method of stream of variation for rotary parts based on state space model,which reveals the rules of variation induction,transmission and accumulation among stations is built. The effectiveness of this model is validated by one case of the machining process of an astronautical valve shell used in a domestic made rocket.

关 键 词：航天阀门 多工序加工 误差传递 微分运动矢量 状态空间模型 

分 类 号：TH161.5[机械工程—机械制造及自动化]