Six Sigma Product/Process Capability

Six Sigma Product/Process Capability

1. Process Capability

   • The ability of a process to produce products or provide services capable of meeting the specifications set by the customer or designer.

2. Limits

   • Control
     • Voice of the process
     • Center line on the X-bar chart represents process centering
     • R and s chart limits represent the amount of variation present in the process.
     • Predictions of the variation that the process will exhibit in the near future.
     • "Reality"
   • Specification
     • Not necessarily meets specifications as established by the customer.
     • There is a difference between a process conforming to specification and a process performing within statistical control
     • Established during the design process or from customer requests, specification communicate what the customers expect, want, or need from the process.
     • "Voice of the customer"
     • "Wishes"
     • The allowable spread of the individuals, are compared with the 6 sigma spread of the process to determine how capable the process is of meeting the specifications.
     • 3 different situations:

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