Kalite İyileştirme Sürecinin Yedi Temel Aracı ve Motor-Traktör İmalatı Yapan Bir İşletmede Uygulanması

İstatistiksel Proses Kontrol (İPK) bir ürünün en ekonomik ve yararlı biçimde üretilmesini sağlamak amacı ile istatistiksel prensip ve tekniklerin, üretimin tüm aşamasında kullanılmasıdır. Bu anlamda en çok bilinen yöntemler “Ishikawa’nın Yedi Temel Aracı” olarak da bilinen; sınıflandırma, çetele, histogram, pareto analizi, neden-sonuç diyagramları, serpilme ve kontrol grafikleridir. Bu çalışmada bu yedi temel araç ele alınarak motor ve traktör imalatı yapan bir işletmede bu tekniklerin kalite iyileştirme çalışmalarındaki kullanımları incelenmiştir. Yapılan literatür incelenmesinden sonra, işletmede istatistiksel proses kontrol araçlarının kullanılması ile kalite iyileştirme ve geliştirme süreci incelenerek, bu teknikler yardımı ile işletmenin kalite gelişimini olumsuz yönde etkileyen faktörler belirlenmiş ve bu faktörlerin ortadan kaldırılması için sebep-sonuç diyagramları geliştirilerek çeşitli önerilerde bulunulmuştur. Ayrıca kontrol diyagramları yardımı ile proseslerin kontrol altında olup olmadıkları incelenmiş ve kontrol dışı durumlar için sebep-sonuç diyagramları geliştirilmiştir.

Statistical Process Control (SPC) is the usage of statistical principles and techniques at all stages of the production, to provide the production of a product in the most economical and effective way. The most popular technique for this purpose is Ishikawa’s methods. Seven basic (Ishikawa’s) tools of SPC are; satisfaction, check sheet, histogram, Pareto Analysis, cause and effect diagram, scatter diagram and control chart. In this study, these techniques are explained shortly and effect of these techniques for quality improving process in engine and tractor factory. Factors which are impact quality improving process negatively are determined and cause and effect diagrams were suggested to eliminate them. And control charts were occurred to cleared process status.

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