GD&T Question

[Qcprick63]

Not a fan of this type of callout.
I ran a circle at the far edges of both bores then recalled into a 3d line . Put a few more circles on both diameters and asked for runout back to the 3D line. I guess I report the highest runout value? Is that correct or is there a better way??

 

[geesaman.d]

I am not comfortable with the length of the A and B datums relative to their diameter and proximity. But yes I would approach it as you are - build a best fit 3D line across the entirety of A and B and report each bore runout to that 3D line. I'm not enouhg of a GD&T wonk to explain which rule this violates other than common sense.

Or put A and B as a circle at the middle of their features and make A-B using those two circle center points.

Regardless, I would clarify on the inspection reports which method was used.

 

[Garland23]

Please don't cross post:

https://www.eng-tips.com/viewthread.cfm?qid=517338

https://www.eng-tips.com/market.cfm

 

[Qcprick63]

sorry, it wasn't getting any responses in this catagory.