Transit Before Windshield Wiper Blades Scrape Upgrade

As early as 80th of 20th century, six sigma, as one kind of breakthrough qualitymanagement strategy, was formed and put into practice in Motorola Company, andachieved a unprecedented success three years later. Wiper cleaning degree is a keycharacteristic which related with the vehicles safety. This article adopted six sigmamethod and data statistic analysis technology. Including as following: Fish born,Pareto chart, regression analysis, DOE and hypothesis test etc., according to DMAICfive steps to analyze, improve and control, Studied wiper cleaning degree badnessissues, Analyzed wiper cleaning badness root cause, improved tension angle andcompression of wiper arm which are the key factor to influence the wiper cleaningdegree, Finally achieved the wiper cleaning degree objective by improving theprocess capability of key factors, Effectively reduced Transit vehicle Front wiper'swarranty rate after sales. Increased customer satisfaction rate and boosting netbenefits for JMC company.