Six Sigma Green Belt Training Part 9

Here is Six Sigma Green Belt Training Part 9.. Published by Skillogic Knowledge Solutions. Skillogic is providing six sigma training in Bangalore, Chennai & Hyderabad. If you are looking for six sigma training along with certification visit Skillogic.
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  • 1. Lean Six Sigma – Green Belt Workshop © 2016 Skillogic Knowledge Solutions. All Rights Reserved Part 9
  • 2. 2 A desired resolution of 0.5% means that the gage needs to distinguish a difference of half percentage point. If the sample size is hundred, the gage is good to distinguish a difference of one percentage point only (1/100), which may not solve the purpose. Attribute gage sheet: Attribute Gage Examples Measure
  • 3. 3 EV and AV Total variation (R&R) in a measurement system is further classified as:  Equipment Variation: The variation within operator, within equipment or gage, within the method. This variation comes from the parts of measurement system or process. This is also termed as Repeatability variation.  Appraiser Variation: The variation introduced between different operators, different parts, and different methods. This is also termed as Reproducibility variation. Total variation (R&R) = EV + AV The mathematical equation used for representing the relationship between total variation, EV and AV is (Std. Dev (R&R))2 = (Std. Dev (Repeatability))2 + (Std. Dev. (Reproducibility))2 Measure
  • 4. 4 How a gage plays with Spec Limits What is the challenge with having high R&R error ? Following scenario explains why.. Measure
  • 5. 5 Gage ANOVA - Objectives Gage ANOVA study:  Quantify amount of measurement variability  Identify amount of measurement variation from different sources Data Type: Continuous The data should be arranged in columns as in the following example. The recommended numbers of operators, parts and trials are 3, 10 and 3 respectively. Which would give one 90 data points. (3*10*3=90) Measure
  • 6. 6 Gage ANOVA Minitab Measure
  • 7. 7 Gage ANOVA –Minitab Measure
  • 8. 8 Minitab Session Output Measure
  • 9. 9 Percentage contribution: It represents the percentage of variation contributed by gage in the process. Recommended percentage contribution from Total Gage R&R should ideally be less than 10%. However one should consult with BB/MBB if the value is between 10-15%, where one might accept the gage error and gets go ahead with the project. Project should be evaluated by the mentor and acceptance would depend on the process, business and the project champion. If tolerance is beyond 15% it is recommended that the gage be corrected before repeating the gage study. No. of Distinct Categories: This number represents the number of distinct groups in the data. For example if you have 20 part being evaluated and the number of distinct categories are 2. This means that the most of the parts are not different enough, and the data can be divided into two groups. In such a case the precision of the gage is not enough for the process. Minimum number of distinct categories should be at least 5. Measure
  • 10. 10 Skillogic Knowledge Solutions Call Us @ 901-989-9000 If you are looking for Six Sigma Green Belt training in Bangalore City along with certification then visit: certification-bangalore/ © 2016 Skillogic Knowledge Solutions. All Rights Reserved
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