1 Attachment(s)
Hole Pattern Identified as Datum
[I]I haven't found many detailed discussions on hole patterns as datums (Fig. 4-26 from ASME Y14.5-2009), but please point me to them if this subjected is previously posted.[/I]
[SIZE=3]Can anyone help me explain to my customer why this isn't the best way to call out the datum structure. They try to use a hole pattern as a datum on nearly every single part. (Or can anyone enlighten me as to why this IS the best option?)
[/SIZE][I]I've attached a picture of an example part with datum structure. Please ignore all format, dimensions, and the rest. I just want to talk about datum structure.[/I][SIZE=3]
I'd really appreciate more information and examples on hole patterns establishing datums if there are any good resources on the internet.[/SIZE]
[SIZE=2][I]
[SIZE=1]P.S. First post.
P.P.S. I took Mr. Brambles GD&T course in 2012.[/SIZE][/I][/SIZE]