Casting parts filtering

[[He...]]

What would be the best way as far as and filtering for a casted part? The customer is asking for .005 runout on a machined diameter calling back to a casted hole/cylinder. I'm fairly new at this job and we don't have the cookbook on hand. I've found an excerpt online, but it doesn't cover exactly what I'm looking for and I can't remember if it covers castings.

 

If it matters, the material is 347 stainless with a hole diameter that s/b .260" (which of course is not and varies down the length) and i'm using a 1.5mm zirconia tip about 30mm deep getting 3 circle paths.

[[Ma...]]

We are running forged and sand blasted parts while working in ISO, so we don't use much of a filtering for datums.

I assume you working in ASME and using tangential evaluation.

I would suggest at least R1.5mm tip or R2.0mm better and up to 3mm/s scanning speed. Since form of that cylinder will not be stable, then i can not suggest just points.

[[Ri...]]

Trying to report .005 runout on a casting will depend on the surface finish.

The better the finish, the better the odds of achieving an accurate and repeatable result.