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Dimensioning Difficulties

Markus
I am attempting to dimension the few cylinders on this door that are cut with a 15 degree angle on them and then welded to the bent plate. Previously, I had intersected the cylinder and the large plane (plane 2), created a point and then dimensioned to the end of the part. They have dimensioned now to be measured from the center of the cylinder to the intersecting line of plane 2 and plane 3 rather than the edge (plane 3). When I program it on the CAD, the measurement comes out correct. When I actually run it, the cylinder is down and to the right by .100 or so. We have verified using hand tools that it is pretty close to where it should be.

My first plane is off the top of the cylinder. Even that shows off center. If I do not use the CAD drawing and simply check the part, the X dimension is off between .035 and .050 (depending on which cylinder I check). The Zaxis (normally the X (it's the way he created the alignment before I got the cad)) is nearly perfect. Is there a certain order I should be creating my alignment? I'm creating a plane on the small cylinder, leveling it, creating the line, rotating it, and then doing the rest. Is there something else, I'm not considering?

Thanks for any help or suggestions at all.
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  • Since cylinders are 3D features, you shouldn't have to rotate your alignment by entering the value. If you need to rotate for dimensioning purposes, you need to use the cylinder you created.

    Not seeing a drawing makes it a little difficult to help provide guidance. If you are using X and Y values for your dimensions than your alignment is absolutely critical. Rotating your alignment will obviously change you locations. So take your cylinder and rotate it Y plus or Y minus about Z Plus (Axis used based on the previous picture you supplied. Just be cautious of the direction of your cylinder. For repeatability, make sure you take your cylinder the same each time (hits around the top of the post first, then hits around the bottom of the post).
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  • Since cylinders are 3D features, you shouldn't have to rotate your alignment by entering the value. If you need to rotate for dimensioning purposes, you need to use the cylinder you created.

    Not seeing a drawing makes it a little difficult to help provide guidance. If you are using X and Y values for your dimensions than your alignment is absolutely critical. Rotating your alignment will obviously change you locations. So take your cylinder and rotate it Y plus or Y minus about Z Plus (Axis used based on the previous picture you supplied. Just be cautious of the direction of your cylinder. For repeatability, make sure you take your cylinder the same each time (hits around the top of the post first, then hits around the bottom of the post).
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