I am having some trouble with measuring accurate Diameter size, I have read some threads on this type of thing but the solutions provided pertain to mostly Bridge Type CMMs and I am using a Romer Arm. So I'm interested in any tips you guys may know of to get more accurate results. ... oh and it seems I have more trouble when working on sheet metal parts and I can imagine its due to the thickness of the material. Thanks in Advance
I run into that all the time (thus using the gage pins etc.). I don't have a probe long enough for many holes firstly so gage pins are the only way to do it plus if a hole isn't supposed to be tapered (cone) it's difficult to get those results... or at least I haven't figured out how to. No training other than the guy that I replaced showing me a few things so I'm OJT all the way... And there is a difference in the measurement options too... least_sqr, Min_sep, and max_inscr all measure in different ways and I use them depending on what I'm trying to do... If I think I have a taper Ill create a cylinder, use the max_inscribed option, do a constructed circle with the cylinder and plane it intersects and that usually gives me position and a general idea of what the hole really is... Or I just do the gage pin thing to see how much taper there is... plus the romer won't tell you if there is a lip on one side of hole or not on thicker parts... like if the reamer didn't go quite all the way through or was slightly tapered itself, which makes a difference on tight tolerance parts (a few tenths)
