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November 29, 2009

Aeroplane production———Practice in six sigma

The whole process is about producing a model plane strictly subjecting to customers' satisfaction. There are four roles in a production team: operation, observation, quality control and time watching. In operation, each member on the stream is assigned a different task to finish a part of a aeroplane until it is completed at step 7. Apart from the operation positions, observors are asked to count the time that each step takes. Through the practice, I start to realise that it is a good example leading me to experience how six-sigma process improves the efficiency of production and controls variations occouring during production.

In the first experimental test, we experienced a serious shock after we made huge efforts on making a plane. Our outcome is just weigh out of what customers are looking for, even we still make gross profits on sales. The defects that we've had are quite disappointed which is below 1.5 in term of six sigma. I found that it is quite obvious that we have got some problems there, mainly because the tutor deliberately created some . mistakes for us  to make. The reason for that is simply because we need to make mistakes to fit ourselves into reality, find the problem and solve the problem. The ultimate goal for the action is, using DMAIC process, to reduce influence of variation on the production, control the variation level drop into the tolerant limits so that customers' satisfaction will finally achieved.

With the failure of meeting customers' expectation in the previous test, we were assigned an improvement task to do a "find it, fix it" action. As a result, we improved the production with two different outcomes. Apart from the results that we have, more importantly, we have the overviewing understanding of how to use Six Sigma to control the variation and minimise the impact of it.

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