Complex Profile of surface given as Primary datum(Dat_A) for True position of compound angle holes

[[Kr...]]

hello all,

pls help to solve this dimension of 0.005"_A_B_C,Becoz,the customer given Datum A as complex surface of profile

Thanks in advance.

[[Ch...]]

If -A- is a curved surface, then yes good chance Engineering was drunk (hahaha), but seriously if -A- is not flat as it appears, then you will have to review ASME Y14.5-2018 for establishing a non-uniform surface as a primary datum, think of a potato chip, etc. I'm not sure which version of CALYPSO can handle that, perhaps 2025.

 

If A is a flat surface ,the profile to ABC seems reasonable here.

 

 

[[Ma...]]

I would use alignment with cylinder B as main, then use bestfit of freeform with only rotation and one translation along datum B axis.

Not sure what datum C is for.

[[Kr...]]

Thanks for your kind reply.

 

 Datum-C- is  angled surface.