continuous diameter as temporary datum feature?
continuous diameter as temporary datum feature?
(OP)
The wheel in attached drawing has two steps mfg processes. Water cutting by a supplier to cut the spoke then machining in our shop to make center hole and outer diameter. The scenario is similar to casting vs. machining. On the water cutting drawing I need a temporary datum features to establish datum axis. I select the root dia of the spokes. Can I treat that dia. as CF dia. and use it as a datum feature? Do the datum callouts in the two drawings make sense to you?
We work to Y14.5-2009.
We work to Y14.5-2009.





RE: continuous diameter as temporary datum feature?
Best Regards,
Dean
www.d3w-engineering.com
RE: continuous diameter as temporary datum feature?
The alternative - OD as datum feature B instead, with a similar CF modifier, then reference B also (so [A,B]) for your 10 profiles from X to Y - is a choice too.
I have another one: get rid of B completely and control everything (that is the spokes and the outer interrupted diameter) with relation to A only. Simultaneous requirements will do the rest.
RE: continuous diameter as temporary datum feature?
RE: continuous diameter as temporary datum feature?