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Practice Exercise of a Dimensional Gage R&R Study, Part II

Practice Exercise of a Dimensional Gage R&R Study, Part II. Rahul Iyer, ASQ-CQE Mesa AZ August 2015. Overview. Practice Exercise of a Dimensional Gage R&R Study Data Collection Calculating The Sample Means, The Sample Ranges, and Part Average (Xp) G R&R Calculations

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Practice Exercise of a Dimensional Gage R&R Study, Part II

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  1. Practice Exercise of a Dimensional Gage R&R Study, Part II Rahul Iyer, ASQ-CQE Mesa AZ August 2015

  2. Overview • Practice Exercise of a Dimensional Gage R&R Study • Data Collection • Calculating The Sample Means, The Sample Ranges, and Part Average (Xp) • G R&R Calculations • Acceptability Criteria For Determining if Gage Passes and Is Useful

  3. Description Of Measurement • On a product we have the following specification: • The extension length must be 0.380 to 0.480 inch.

  4. Data Collection • Let us measure the dimension with a caliper--Variable readout (specification = 0.380 in. to 0.480 in.) • Operator A:

  5. Data Collection • Operator B:

  6. Data Collection • Operator C:

  7. Intentionally Left Blank

  8. Calculating The Sample Means • Operator A:

  9. Calculating The Sample Means • Operator B:

  10. Calculating The Sample Means • Operator C:

  11. Intentionally Left Blank

  12. Calculating The Sample Ranges • Operator A:

  13. Calculating The Sample Ranges • Operator B:

  14. Calculating The Sample Ranges • Operator C:

  15. Intentionally Left Blank

  16. Calculating The Trial Means

  17. Calculating The Trial Means

  18. Calculating The Trial Means

  19. Intentionally Left Blank

  20. Calculating Part Average (Xp)

  21. Intentionally Left Blank

  22. G R&R Calculations Constants are as follows: n = 3, D4* = 2.58, D3* = 0, K1 = 3.05, K2 = 2.70, K3 = 1.62

  23. G R&R Calculations

  24. G R&R Calculations

  25. Intentionally Left Blank

  26. Acceptability Criteria For Determining if Gage Passes and Is Useful

  27. Conclusion • Practice Exercise of a Dimensional Gage R&R Study • Acceptability Criteria For Determining if Gage Passes and Is Useful • Further illustration regarding the concerns surrounding the use of calipers as measurement tools

  28. Questions

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