Product tolerance engineering based on the mathematical statistics

Abstract

Flow process of material production often has a problem that the formulation of the range of products tolerance is either too wide or too narrow, which is because the integrated process is not fully considered. With mathematical statistical method, we can do statistical work about the standard deviation of the products when product is in the stable state. Then choose appropriate comprehensive process capability coefficient, and estimate the actual size distribution of the products. Based on this, we can make products tolerance and solve the problem that makes the range of products tolerance too wide or too narrow. So the products not only can meet customer requirements but also bring its potential to the full. Improve the product quality, and also improve the economic benefit of enterprise. © Springer-Verlag Berlin Heidelberg 2013.