randy64
Aerospace
- Jul 31, 2003
- 170
Very simple part. A rectangular hole in a rectangular block. Rectangular hole size is dimensioned with basic dim's and has a profile callout pointing to it. Three datums called out - bottom (A) of block and two edges (B & C). Profile is called out to all three datums. There are also basic dim's locating the rectangular hole from the edges (datums B & C).
Local "expert" says this is okay, that we can use profile to locate the rectangular hole. I disagree, argueing that profile is a tolerance of a feature size, not a tolerance of location. Therefore, dim's that locate rectangular hole should become unbasic, or just toleranced dim's - OR - add positional tolerance callout to rectangular hole and keep dim's basic.
Who's right?
Thanks
Local "expert" says this is okay, that we can use profile to locate the rectangular hole. I disagree, argueing that profile is a tolerance of a feature size, not a tolerance of location. Therefore, dim's that locate rectangular hole should become unbasic, or just toleranced dim's - OR - add positional tolerance callout to rectangular hole and keep dim's basic.
Who's right?
Thanks