Aligning hole to hole confusion

[Underspec]

I have two holes that is normal to X-. Constructed a line from one to the other going Y+. After the alignment it's showing one hole off by .005" on the Z.

Here's the setup:

Plane leveled/Trans X
Hole1 = Y, Z origin
Construct 2D line from Hole1 to Hole2
Rotate line to Y+ about X+.

Shouldn't both holes be Z=0?

Form on both holes is .00003" or so. Diameter is coming out almost nominal.

[JamesMannes]

I have two holes that is normal to X-. Constructed a line from one to the other going Y+. After the alignment it's showing one hole off by .005" on the Z.

Here's the setup:

Plane leveled/Trans X
Hole1 = Y, Z origin
Construct 2D line from Hole1 to Hole2
Rotate line to Y+ about X+.

Shouldn't both holes be Z=0?

Form on both holes is .00003" or so. Diameter is coming out almost nominal.

What view plane were you in for constructing the 2D line?

[inspector212]

You have to translate to that line in Z.

[Underspec]

Ah, I was in the Z workplane. Thanks for reminding me James. I'm kinda hungover

[Wingman]

You have to translate to that line in Z.

He should not have to translate to the line if his Origin Hole was set to Zero and his Rotation was about that Origin (as in this case).

[inspector212]

He should not have to translate to the line if his Origin Hole was set to Zero and his Rotation was about that Origin (as in this case).

True, guess I should read a little closer

[Matthew D. Hoedeman]

He should PROBABLY make a 3-D line between the holes. HE probably should also have surface sample hits on the holes as well. If you are NOT in a pre-aligned condition to the axis of the holes and you are usinga workplane that is not perpendicular to the holes, a 2-D line will skew it since it will not gho center point to center point, but as a projected point into the current work plane. A DCC alignment AFTEr the manual alignment will help correct this, but I would STILL use a 3-D line.

[Snaggy]

He should PROBABLY make a 3-D line between the holes. HE probably should also have surface sample hits on the holes as well. If you are NOT in a pre-aligned condition to the axis of the holes and you are usinga workplane that is not perpendicular to the holes, a 2-D line will skew it since it will not gho center point to center point, but as a projected point into the current work plane. A DCC alignment AFTEr the manual alignment will help correct this, but I would STILL use a 3-D line.

Why construct a line at all? Why not rotate Y+ to the two holes? But I agree with you about the surface sample hits, and a DCC alignment.

[Underspec]

Why construct a line at all? Why not rotate Y+ to the two holes? But I agree with you about the surface sample hits, and a DCC alignment.

Surface plane is DCC aligned. The two circes sit on this plane so it would be a 2D line. The circles take 1 sample hit for depth.