B
Berg.Jlle
Hi.
I have two questions and I'd like any help.
1) What is the difference in use or not of "Historical standard deviation" in a Gage R&R study, since the %SV and %Tolerance are not affected by this value ?
2) I have a measuring instrument that I wish to make an analysis of this measurement system MSA (Gage R&R study + Gage Linearity and Bias Study) to verify its performance.
This instrument is inserted into the production line and does the measurement of 4 types (A,B,C,D) of parts with the following specification limits:
Type A > LSL: 1,5; USL: 2.5
Type B > LSL: 2.5; USL: 3.5
Type C > LSL: 3.5; USL: 4.5
Type D > LSL: 4.5; USL: 5.5
I will collect samples of typical production for each of 4 types (A,B,C,D).
My question is if I should do a single study with data from all 4 types together considering a single specification limit (LSL:1.5 and USL:5.5) or if I should do a study separately for each type ?
I have two questions and I'd like any help.
1) What is the difference in use or not of "Historical standard deviation" in a Gage R&R study, since the %SV and %Tolerance are not affected by this value ?
2) I have a measuring instrument that I wish to make an analysis of this measurement system MSA (Gage R&R study + Gage Linearity and Bias Study) to verify its performance.
This instrument is inserted into the production line and does the measurement of 4 types (A,B,C,D) of parts with the following specification limits:
Type A > LSL: 1,5; USL: 2.5
Type B > LSL: 2.5; USL: 3.5
Type C > LSL: 3.5; USL: 4.5
Type D > LSL: 4.5; USL: 5.5
I will collect samples of typical production for each of 4 types (A,B,C,D).
My question is if I should do a single study with data from all 4 types together considering a single specification limit (LSL:1.5 and USL:5.5) or if I should do a study separately for each type ?