Searching the forum for information regarding application of GD&T on edges, i found thread1103-310372, where it seems that most participants agreed that edges (including those that connect surfaces at an angle smaller than 90 deg.) can legally be used as datums (recommended or not - is a...
Hello all,
Fig. 4-49 in ASME Y-14.5-2009 displays the use of datum target spheres.
I wanted to know if it is also acceptable to use datum target cylinders. I haven't seen an example in the standard and i'm not sure whether it is allowed or not.
One case where this could be useful is parts with...
Hi all,
A part is consisted of two coaxial cylindrical features. Is there any difference between the following callouts:
1. Perpendicularity on the end face of one of the features to a datum axis of the other feature.
2. Total axial runout on the same end face to the datum axis.
In terms of...
I need help in understanding this issue regarding simulating a center plane from a datum feature related to an external width dimension: let's say a width dimention is defined as a primary datum feature. When using a vise-like physical datum feature simulator with two almost parallel faces that...
