six sigma

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Origin of Six Sigma Manufacturing

Six Sigma is a manufacturing process control strategy which first implemented by Motorola.

Six sigma being common used by any sectors of industry nowadays, especially those precision product manufacturing.

Six Sigma manufacturing implemented to control the process or stabilize the process. Then, seeks to improve the quality of process outputs.

To stable or improve the process, six sigma manufacturing tools need to be used to achieve the target.

Six Sigma tools - measurement system analysis (MSA) 

 

What is six sigma measurement system analysis (MSA)?
  • Six sigma measurement system analysis is a six sigma methodology tools. It is a process of measurement to get the characteristics value.
  • Why measurement system analytic (MSA) needed for the process?
  • Measurement system analytic directly affect on the product and process decisions. MSA is to minimize false alarm (producer’s risk) or miss rate (customer’s risk).
  • False alarm: A potential wrong decision (reject, scrap, pass, deliver) will be made based on a low quality measurement system output.
  • Miss rate: A bad part sometimes be called as “good”
  • What is the benefit on using measurement data?
  • Process development: To determine if a significant relationship exists between two or more variables.
  • Process control: The decision to adjust a manufacturing process or not is now commonly based on measurement data. Measurement data, or some statistic calculated from them, are compared with statistical control limits for the process.
  • The benefit of using the measurement data is largely determined by the quality of the measurement data used.

Standard flow chart for advance product quality plan (APQP)

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