H. Vairagade
N. Hans
Abstract
Since the inception of the six-sigma implementation has been done for the defects which are tangible which affects the functionality of a product significantly viz. deviation from mean diameter of a shaft, oil seal leakages, frequently defects occurring in an assembly etc. Alittle research is done on intangible defects. Here intangible defect means a defect does not cause any harm to functionality of the product. For instance, while assembling a product an operator does not follow standard time which is being assigned him or her to perform the task. An assembly time required for a certain taskthe time here is an intangible parameter (no materialistic existence and no effect on functionality of the product). One can measure the time but cannot realize its physical existence and this research tries to consider details of reduction of cycle time variation of conveyor driven manual engine assembly line. Here, First, Conveyor driven means; an engine is mounted on the pedestal and is moved forward and backwards by means of a conveyor. And second, manual assembly line means no robots are involved all the processes are performed by human operators. The crossing of given standard time is or completing given task in far much less time considered as a defect in this research. To reduce cycle time variation and over or under cycle time here the six-sigma methodology is implemented.
Keywords- Conveyor Driven Assembly line, Andon Call, Cycle Time Variation, Six Sigma, Process capability, Intangible Defect