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True Position of holes, without Diameter symbol in Control Box??

SAM-IMC
let me lay this out for you guys and gals the best I can:

I have Datum A wich is a inside Circle recessed into the top of the part. We will call this "Datum A"

I have another recessed circle on the bottom of the part. We will call this "Hole"

"Hole" has a dimension callout that reads as follows: Dia. 7.06"
[T.P./.010/A] Notice there's no Dia. Symbol in the Cntrl Frame

I have never seen this callout before without the Dia. Symbol in the control frame when in reference to a datum that is a circle or cylinder, have you?

If I run this with both features as Circles, I get a measurment of 0 (ZERO)

If I run this with both features as Cylinders, I get some actual numbers, but I don't know if they are correct.

If I run this with Datum A as a Cylinder and Hole as a Circle, I get 0(ZERO)

I am confused as to which way i am supposed to do this. Is the callout on the drawing messed up, or am I giving Pcdemon incorrect features to calc this dimension?

Any help would be greatly appreciated.

Sam
Parents
  • Just some ideas.
    The cylinder is 1.00" deep and not thru.
    You can probe a 3-level cylinder and then planes at the bottom and at the top.
    Create intersecting circles at each end (cylinder/plane) and get a theoretical circle at the extremes of the cylinder.
    This will not be "perfectly" accurate, but it will give you the position of the cylinder at each end.

    There is also an option within the TP dialog to dimension at each end of the measured cylinder. This will not give you data for the extreme ends, but will give you the measured position of each end where probed.
Reply
  • Just some ideas.
    The cylinder is 1.00" deep and not thru.
    You can probe a 3-level cylinder and then planes at the bottom and at the top.
    Create intersecting circles at each end (cylinder/plane) and get a theoretical circle at the extremes of the cylinder.
    This will not be "perfectly" accurate, but it will give you the position of the cylinder at each end.

    There is also an option within the TP dialog to dimension at each end of the measured cylinder. This will not give you data for the extreme ends, but will give you the measured position of each end where probed.
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