Regulation and application of stream of variation modeling for multistage manufacturing
Complex products are Multi-process Manufacturing Parts(MMP),such as aero-engine structural parts and automobile bodies.The product quality control in a dark state is caused by the coupling impact of the generation and accumulation of the various errors in the manufacturing process on product quality.Constructing Stream of variation(Sov)model to describe and analyze the transmission,accumulation and elimination by combining the Sov theory with precision control theory and engineering data processing methods is important to achieve quality control for the production of complex products in MMP.The application and other supplementary researches of Sov models were summarized,and the overall framework of quality control of Sov models for MMP was puts forward.The Sov mod-els of MMP were classified from two aspects of small data-driven time series mathematical analysis models and big data-driven complex network statistical analysis models.The development trend of Sov models in the field of MMP of high-end equipment and complex products in the future was prospected.
complex productmulti-process manufacturingquality controlstream of variation