Advancement in Through Hole Absence in Drilling Operation

This paper presents a review of vendor facing problem of drill breakage while doing 2nd hole in component named as U.J. Cross. In this report firstly, we founded problem to drive absence of through hole missing of lubrication hole operation which cause high PPM of company supplier X. Our focus was on to Find and eliminate problem for drill break (through hole absent) during lubrication drilling operation in X cause 66% to total rejections contributor. We had checked the part visually and thought about it where and why the problem came. We converge on Scrap Characterization, Reintroduce not good Part to Process, Operation Search. After in this case study we had done a test, by adding a speed sensor to SPM drilling machine. Action implemented on one machine shows the visibly difference in rejection % in action implemented & other 3 machines. We understood Speed sensor reduces speed while chip is in between part & drill cause more energy to drill & results in drill breakage. The problem magnitude of chip direction cause drill breakage. Then we had applied Speed sensor installed to all SPM machines & solution Run Chart proved that problem magnitude was controlled. This paper provides a snapshot of the Problem solved on through hole Absence in drilling operation.