[Ke...] Posted June 3, 2021 Share Posted June 3, 2021 For the example of this cylindrical part: Datum E - Cylinder: is defined as the OT Surface, or the Centerline of the Cylinder? Datum D - is the Face of the Cylinder How would you check this feature without the benefit of a CMM? Would you trust a result (repeatability) with such a small angular surface to evaluate? What is the Max/Min probe size that you would recommend? (Per ASME Y14.5, latest revision) Thanks all!Angularity Example.png Link to comment Share on other sites More sharing options...
[Cl...] Posted June 3, 2021 Share Posted June 3, 2021 At first glance I thought maybe a sine plate and test indicator, but the chamfer is too narrow. Link to comment Share on other sites More sharing options...
[Da...] Posted June 3, 2021 Share Posted June 3, 2021 1mm probe or larger will work fine. I usually program this type of angle, instead of trying to touch it manually. While it looks tight, the tolerance is actually quite large when compared to the length of the cone. Program as if the cone was at low limit, this allows a low limit part to be checked . If you program a mean, or high limit part, you might find it completely misses a low limit part. Link to comment Share on other sites More sharing options...
[Ke...] Posted June 3, 2021 Author Share Posted June 3, 2021 Please sign in to view this quote. I was thinking that a mylar overlay, on a shadowgraph, might do the trick? Link to comment Share on other sites More sharing options...
[Da...] Posted June 3, 2021 Share Posted June 3, 2021 yep... just saw that "without a cmm" part 🤣 🤣 🤣 Link to comment Share on other sites More sharing options...
[Da...] Posted June 3, 2021 Share Posted June 3, 2021 Sine bar works. Just use a rail to keep the indicator on centerline... Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in