That's the email I got upon entering the shop today. I was using a 1 x 10 styli for a part with 3-48 & 6-32 threaded holes. Just trying to get a decent location within tolerance of +/- .005. Now, the customer (we are the sub-contractor) is "coming in today with a cylindrical probe which will take more accurate hits on thread holes". I checked some of the postings in the forum and it looks like there's a lot involved and the results are sketchy.
Thread locators are the only way I am aware of to measure off of the pitch diameter, which is what is required per ASME Y14.5... It's funny that a shank probe was your customer's best answer to your problem...
Measuring off of the minor with or without the pitch function turned on still violates the standard. I generally only use our locators if the position tolerance is tight or if it is close to the edge of the tolerance. They are very handy but can tie you down to the CMM when measuring parts with a lot of threaded holes.
Thread locators are the only way I am aware of to measure off of the pitch diameter, which is what is required per ASME Y14.5... It's funny that a shank probe was your customer's best answer to your problem...
Measuring off of the minor with or without the pitch function turned on still violates the standard. I generally only use our locators if the position tolerance is tight or if it is close to the edge of the tolerance. They are very handy but can tie you down to the CMM when measuring parts with a lot of threaded holes.
