datum plane of inclined datum feature in '09 std
datum plane of inclined datum feature in '09 std
(OP)
I'm looking at fig. 4-7. In the "means this" graph, shouldn't the "third datum plane" be third coordinate plane? The third datum plane or datum plane C should still align with the datum feature simulator of datum feature C. Any thoughts?





RE: datum plane of inclined datum feature in '09 std
John-Paul Belanger
Certified Sr. GD&T Professional
Geometric Learning Systems
http://www.gdtseminars.com
RE: datum plane of inclined datum feature in '09 std
RE: datum plane of inclined datum feature in '09 std
John-Paul Belanger
Certified Sr. GD&T Professional
Geometric Learning Systems
http://www.gdtseminars.com
RE: datum plane of inclined datum feature in '09 std
For a part with three spherical features as primary, secondary, and tertiary datum features, there would be three datum center points, located at the center of three datum feature simulators, and once a datum reference frame was constrained to those points, there would then be three planes of a datum reference frame... No "datum planes" exist for this example.
The standard doesn't make the terminology I describe above clear. I'm describing what I think is the best terminology, and also what I hope the next version of Y14.5 will clarify.
Dean
www.d3w-engineering.com