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I have different opinion with auditor. He wanted that All dimension measurements have it's GR&R study... But in practically its hard to do because so many part and so many dimension on each part. One drawing for a part automotive will have many dimension,
For MSA activity in our place, first, Our engineering will review customer drawing with identify all measuring, if there is similar measurement method, we dont need to do gage R&R any more, we can use existing GR&R study (similar part)
Example:
Existing Part A (name bracket A, with dimension on drawing, there 4 stamping operators who measure:
- Thickness, 1,7- 1,78 mm; We used micro meter
- Height, 98,56 - 99,57 mm; we use height gauge.
- Inner Diameter, 6,6 - 7,0 mm with caliper
We got new product bracket C last month with same dimension with bracket-A but different specification
- Thickness, 2,2- 2,5 mm
- Height, 56,50 - 57,00 mm
- Inner Diameter 90,00 - 95,00 mm
We consider that measuring method for : thickness, height and inner diameter are similar between part A and C, so that we use study variation A to describe study variation bracket C.
In our stamping plant there are more than 140 pcs part produced daily and now we are facing 80 part (new product) in august- October....
MSA is measurement validation. when there are parts with different dimension but have same method, we can use same GR&R study.
in Our Opinion, MSA is same with how to drive our car, if we buy a new manual car should we practice again how to drive that car?
if We follow the auditor, I am afraid that MSA only understood how to calculating formula.
Please your comment,
Best Regards
For MSA activity in our place, first, Our engineering will review customer drawing with identify all measuring, if there is similar measurement method, we dont need to do gage R&R any more, we can use existing GR&R study (similar part)
Example:
Existing Part A (name bracket A, with dimension on drawing, there 4 stamping operators who measure:
- Thickness, 1,7- 1,78 mm; We used micro meter
- Height, 98,56 - 99,57 mm; we use height gauge.
- Inner Diameter, 6,6 - 7,0 mm with caliper
We got new product bracket C last month with same dimension with bracket-A but different specification
- Thickness, 2,2- 2,5 mm
- Height, 56,50 - 57,00 mm
- Inner Diameter 90,00 - 95,00 mm
We consider that measuring method for : thickness, height and inner diameter are similar between part A and C, so that we use study variation A to describe study variation bracket C.
In our stamping plant there are more than 140 pcs part produced daily and now we are facing 80 part (new product) in august- October....
MSA is measurement validation. when there are parts with different dimension but have same method, we can use same GR&R study.
in Our Opinion, MSA is same with how to drive our car, if we buy a new manual car should we practice again how to drive that car?
if We follow the auditor, I am afraid that MSA only understood how to calculating formula.
Please your comment,
Best Regards
