复杂产品加工过程建模研究

复杂产品加工的高精度导致了其加工过程的多工序性。当复杂产品在多个工序间进行加工时,其加工误差会在工件上传递并累加。由于其高精度要求,导致引起几何加工误差的过程参数较之一般的多工序加工过程来说更多,误差产生的形式更多样,为了对复杂产品加工误差传递过程进行描述,采用机器人运动学中的微分运动矢量来描述工件和夹具,采用齐次坐标变换来得到其在不同工序间的位置关系。在此基础上,建立了复杂产品加工过程误差传递的物理模型,详细论述了该模型的建立过程,并对所建模型的有效性进行了验证。该模型为复杂产品质量控制与改进研究中的故障诊断、误差源识别、传感器安放位置优化、误差仿真和加工参数及夹具优化设计等提供了理论基础。

Study the Modeling of Complex Product Machining Process

The high precision request of complex product machining results in that it's machining process often contains multiple stages.When the part transmits between multiple stages,dimensional variation of part will be accumulated and transformed between the machining processes.Because of its high precision requirements,there are more process parameters will impact the machining errors than general multistage process,there are more diverse process parameters should be considered in complex product machining proces...