Abstract
The Stream of variation (SoV) model deals with process dimensional variation propagation of multistage machining processes. It describes the relationship of process dimensions and end-product dimensions. The reliability of end-products varies because of dimension deviation since the materials, designs and manufacturing processes are fixed in batch production. This paper studies the feasibility of modeling the relationship of reliability of products and the process dimensions (RPPD) based on the SoV model. RPPD modeling should be done in the design phase before launching the manufacturing process. Related work based on the RPPD model including key process characteristics identification, manufacturing process monitoring, feed-forward control are also discussed. It is shown that the RPPD model can be a useful tool in the assurance of reliability of end-productions in manufacturing.
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