Getting Error On Datum Callout Any Advice?

[zoolander303]

As shown in photos I cant call out this true position I think its datumed incorrect but figured before I contact the customer for a 3rd time I would ask anyone on here if theirs anything I can do about this.

[zoolander303]

pics are below

[Rich P]

separate the FCF
D mmc C and B are independent not a refinement like the A-B-C over A other FCF

[zoolander303]

I tried and still get the same issue when D and C are in the same fcf

[zoolander303]

okay thanks

[AndersI]

What happens if you reduce datum C to a point? PC-DMIS isn't happy with additional axial datums when the primary is a pattern.

[Schlag]

If B is an angled surface to A and for this discussion B is your ( X) Where on that surface is B going to be measured from ? Depending where you take hits ? I see the 24.46 BASIC but thats not what DMIS is going to give you when you use a PLN .

Looking at wrong callout but I guess it really still applies...

[Rich P]

Try to construct a plane with the 3 X 6MM D datum features, I am thinking that the 38.36 Basic is driving the D relationship, does not like the relationship of the ID X 3 that construct the D datum and the B datum.
Are your D datum features circles or cylinders? What is M1?

[zoolander303]

I'm using circles material thickness is like 2mm honestly M1 i was wondering the same thing but its a note in the rev box that says updated datum features

[zoolander303]

i tried and i aligned using D as primary C as secondary and B as tiertiary then it kicked back a error saying lower tier primary must be the same as upper tier primary

[Rich P]

Looking at this closer, D pattern and as drawn 38.36 Basic questioning to D why not from A datum for 38.36, does not make sense from D datum. D pattern would be centroid of pattern?? Feel like missing something.
34.16 Basic and 38.36 Basic going to same features?
Are A and C not 90 degrees?
Schlag question on the 24.46 is a good question also, unless not seeing that the Basic is angular, the view with D MMC C and B callout are skewed.
Looks like you have a "FUN" part here.

[zoolander303]

yeah so fun lol, the angle from A TO B is a 98 degree bend

[Rich P]

i tried and i aligned using D as primary C as secondary and B as tiertiary then it kicked back a error saying lower tier primary must be the same as upper tier primary

real question is D-C datum structure in relation to the 2 x 5mm ID, 5.8 Basic and the 26mm pattern are obvious but the D relationship is the Key and why D not A datum is what I am not seeing here. Time for a conversation with design or customer.

[RanDawgg]

The DRF on the drawing has to be incorrect. It isn't constraining enough degrees of freedom. I'd imagine it is a typo.