4 A A Manufacturing Company Has Ten Nominally Identical Factories Producing The Same Product One Of The Operations In 1 (43.02 KiB) Viewed 7 times
4) a) A manufacturing company has ten nominally identical factories producing the same product. One of the operations in the manufacturing process involves milling a cavity out of a plastic block. When examining the recorded metrics from all ten factories, a plot of the number of milled cavities against the cavity depth does not yield a normal distribution. i) What does this information indicate? [2] ii) How could you identify which of the factories is the potential cause of the problem? [1]
iii) Describe the steps required in the process of identifying the problematic manufacturing site. [4] b) Consider the manufacturing process of drilling a hole through a steel bar. It has been found that 5 % of the holes drilled fail to mean the specified dimensions. As a quality engineer tasked with investigating the issue, construct a cause and effect 'fishbone' diagram stating two logical and specific possible causes under each of the 4M headings of the cause and effect diagram for the poor quality holes drilled. [5] c) Explain why customer focus is considered such an important quality management principle. [4]
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