Özet:

The Kaizen applications, expressed as small improvements in business processes, are among the most effective of quality improvement work. In this study, a major Kaizen application, which is more comprehensive than known Kaizen studies, with the aim of achieving correct improvement at a time and in an acceptable time, but can be implemented in a shorter time than Six Sigma and similar studies, has been conducted and the effectiveness has been studied. For this purpose, in a car company, the application of major Kaizen techniques and the study of the errors seen in the production process of a particular piece of sac has determined the causes and the process has been improved by reducing these errors. In accordance with the purpose of the study, error definitions were first made for the general process and Pareto analysis for these errors was carried out. Then the production and measurement processes of the piece were thoroughly studied, according to the measurement results for all the control points of the piece, the process qualification indicators were calculated, the critical importance of the control points were determined and focused on these points. Following the current situation analysis, the fish shell diagram was created, Gemba analyses and hypothesis tests were carried out, the priority matrix was created by planning countermeasures and the improvement recommendations were presented. Healing is standardized and improved. As a result, it has been shown that the process capacity indicators for the determined points are improved. This study successfully integrated the process qualification analysis that was not carried out under the Kaizen studies in literature into the Kaizen application, supporting the findings with different statistical analyses and verifying the results.

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