Line-surface constructed point

[A-machine-insp]

I have a hole that is measured as projected to moldline intersection. I have a patch scan that I used to create a surface and a cylinder for the hole, now I am trying to construct the point. I select "Constructed Point" leaving it on "Auto" then select my surface and cylinder and it tells me that the combination of features is not supported. I have tried changing the order I select them in, I tried constructing a line from the cylinder and doing the same as before, and I tried setting the constructed point to pierce intersection projection all with the same result. What am I doing wrong and how do I get this to do what I want?

[Sora5]

You're trying to construct an intersection point between a cylinder/line and a scan? Did you construct a plane using the scan?

[A-machine-insp]

No. I'm trying to create a constructed point with a cylinder or line and a constructed surface.

[AndersI]

According to the Help, a constructed surface is not supported by intersect or pierce:

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help_constr_prc.PNG

[A-machine-insp]

Dang. Let me try and make a curve from it.

[A-machine-insp]

It's not letting me do what I want so I'm going to go with my original idea for now since it seems to prove my belief. I made a plane on the moldline surface as close as I can to where the holes are at and constructed a point from the cylinders and the plane.

Some background on this part. This is a print based part and our engineering department made a model from the print. The customer supplied QPIS points (quality planning instruction sheet for those not familiar) and I want to construct a surface from those points to project the cylinders to and dimension the points. The part has 3 moldline surfaces but this issue only concerns 2 of them. The cylinders are through an offset moldline surface that is recessed .140" from the outer moldline surface. I believe the dimensions are to the intersect of the cylinders and the outer moldline surface, If that is true, I need to somehow construct the outer moldline surface in DMIS to project/intersect/pierce with the cylinders (or constructed lines from the cylinders).

This print has confused us because some dimensions are coming in by projecting features to moldline and some are in by projecting to datum C (big flat plane). The other two inspectors/programmers are going to look at it when I am done and give their opinion. If we can't come to a consensus then we are going to go to engineering and if we can't all decide, then we will go back to the customer. At worst, this is a good question to take with me to the level 3 class at the end of the month.

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