I have a part that has a profile called out to ABC and a tolerance of +,- 3mm but the part is fails when measuring on CMM. So here at work an Engineer created a "Profile Gauge" which is a piece of metal with the outline of the part cut out and off set edges which is suppose to represent the 3mm tolerance.
I don't think this Profile Gauge works to well because the same part I measured on the CMM (the part that failed), went right threw his Profile Gauge, which to him means the part passes profile, But my argument was that he wasn't checking Profile to the Datum structure called out on the print which is ABC, I feel like he is measuring profile free of datum structure.
do you guys think a "Profile Gauge' is a valid method? Have you guys used Profile Gauges? if so how do you verify them on the CMM? Thanks in Advance
update- I think this called a Profile Template.
I don't think this Profile Gauge works to well because the same part I measured on the CMM (the part that failed), went right threw his Profile Gauge, which to him means the part passes profile, But my argument was that he wasn't checking Profile to the Datum structure called out on the print which is ABC, I feel like he is measuring profile free of datum structure.
do you guys think a "Profile Gauge' is a valid method? Have you guys used Profile Gauges? if so how do you verify them on the CMM? Thanks in Advance
update- I think this called a Profile Template.