(培训课件)品质管理.pptVIP

品質管理 ;討論議題;Q.C.的重要性：;The Eight Dimensions of Quality;Quality的意義：;（ii）品質的特性（quality characteristic）;7;The Transmission Example;Terminology;10;Statistical Methods;Walter A. Shewart (1891-1967) Trained in engineering and physics Long career at Bell Labs Developed the first control chart about 1924; Taught engineering, physics in the 1920s, finished PhD in 1928 Met Walter Shewhart at Western Electric Long career in government statistics, USDA, Bureau of the Census During WWII, he worked with US defense contractors, deploying statistical methods Sent to Japan after WWII to work on the census;Deming’s 14 Points;14 Points cont’d;Joseph M. Juran;3. Control的意義：;（c）Check（檢核）： 測定 分析：應用統計方法整理分析測定結果 判定：判斷分析結果是否有異常原因 （d）Action（措施）— 對執行上的偏差採取矯正行動 研擬改善對策 執行對策 對策覆查 再標準化;4. Q.C.的意義：;5. Q.C.的演進：;7. 何謂「A process is in statistical control」﹖;與producing，identifying，avoiding，repairing不良品有關的cost均稱為Quality costs.;Quality planning and engineering New products review Product / process design Process control → e.g. Control charts Burn-in → Prevent early life failure Training Quality data acquisition and analysis;Inspection and test of incoming material Product inspection and test Materials and services consumed Maintaining accuracy of test equipment;Scrap Rework Retest Failure analysis Downtime Yield losses Down grading;Complaint adjustment Returned product / material Warranty charges Liability costs Indirect costs;假設在此生產過程中的first-pass yield為75% （i.e. 只有75%符合規格，25%不合規格） 且不合規格的產品僅有60%可再修理成為良品， 則若生產單假價為＄20，修理的單價為＄4，則;Cost/good part ＝;