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Abstract
In this our main problem is that the drill is off setted in MS-Bush while drilling. This is because of the vibrations occurred during drilling process while putting the drill through the MS-Bush. To overcome this problem we have made an jig by rotating the shaft to 90 degree where the bush is fixed. This problem is solved by using tools of RCA like Why Why Analysis & Cause and Effect Diagram. Root-cause identification for quality and productivity related problems are key issues for manufacturing processes. It has been a very challenging engineering problem particularly in a multistage manufacturing, where maximum number of processes and activities are performed. However, it may also be implemented with ease in each and every individual set up and activities in any manufacturing process. In this paper, root-cause identification methodology has been adopted to eliminate the dimensional defects in drilling operation.