Orthogonal Test On Improve The Manufacturing Parameter Of Sprcialshaped Spring

According to the high expectation from customer to the goods in the market, as a resultthe specification in the production process becomes stricter than before. Most factories notonly improve their level of machine, but also pay more attention to the technical parameter,in order to improve their confirming rate and keep their competitiveness in the market. Butactually during the daily work, the result always cannot match its expectation due to lack ofcorrect method and strong technical background. So it is very useful and meaningful to bringin a new scientific testing method.This article base on the actual situation, make a completely analysis in the parameter ofmanufacturing process, and considering the real capability of factory to analysis the level ofeach parameter, then using the orthogonal test to research the parameters of special shapedspring, focus on researched how the related dimension, heat treatment parameter andquantity per time in grinding impact the key dimension4.8±0.04mm, through the orthogonaltest plan to collect the research data, analysis these data, and got the best parameters pack.After trial run, the process capability index of4.8±0.04mm raise up from0.40to1.0,improve the rate of mass production highly and the factory gets great benefit from thisresearch.