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SPC. Statistical Process Control. Continual Improvement. ISO Six Sigma Baldrige Criteria for Performance Excellence TQM Profit. VARIATION. VARIATION. Changes in the value of a measured characteristic. Types of VARIATION. Natural Variation or Common Causes
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SPC Statistical Process Control ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Continual Improvement • ISO • Six Sigma • Baldrige Criteria for Performance Excellence • TQM • Profit ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
VARIATION ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
VARIATION • Changes in the value of a measured characteristic ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Types of VARIATION • Natural Variation or Common Causes • Unnatural variation or Special Causes ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Distribution from bead board ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Distribution from bead boardwith 3 standard deviations ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Distribution in groups of 5 samples ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Compare single to ave of 5 ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
CONTROL CHART A graphical method of evaluating whether a process is in a state of statistical control ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Distribution from bead boardwith 3 standard deviationsfirst 30 points ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Control chart sample of 5 ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Comparison ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
XBAR & R Control chart ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
XBAR & R CONTROL CHART A graphical method of evaluating whether a process is in a state of statistical control Based on a normal distribution ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Individual rolls of a die – Flat distribution ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Flat distribution sample size of 2 ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Flat distribution sample size of 3 ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Flat distribution sample size of 4 ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
CONTROL CHART Variables Data Attribute Data ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Attribute Control Chart ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
How to implement and use SPC • Evaluate current process • Determine if process is in control • Common cause variation • Special cause variation • Involve people • Only chart what you can handle • Immediate action to out of control conditions ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Capacitor distribution ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Distribution +- 20% Limits ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Distribution with +- 10% Limits ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Distribution with +- 5% Limits ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Control chart ASQ Presentation 4/15/08 Andy Lauber alauber@att.net
Attribute Control Chart ASQ Presentation 4/15/08 Andy Lauber alauber@att.net