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Problems with aligning model and CAD=Part

Previously I have always transformed the model prior to any programming; however, I have decided to try Matt's method.

From the book of Matthew:

Try all of this:

Alignments:

First of all, to do ANY alignment, 3-2-1 or iterative, you MUST have XYZ values for whatever you use for the alignment.

Step #1
Do this no matter WHAT type of alignment you are going to do.
1) Place the part on the table the way it will sit for your inspection
2) Import your model data BEFORE you do any measuring
3) Using the CTRL-F3 option (3-D rotate), rotate the cad data until it matches the way the part sits on the machine, remembering that as you look at the screen you are looking DOWN on the machine
4) Once you have the cad data rotate (you are actually ONLY rotating the VIEW of the cad data), use F5 to open the setup options.
5) Go to the Part/Machine tab and while looking at the 3-D rotate cube, set your CAD to MACHINE axis
6) Click OK
7) Set your workplane to the ‘top’ of the cube (if the top, facing YOU face of the cube is X-, use the X- workplane)

.


When I complete step 6) the model flips back to it's original orientation. Should this happen? If I continue through the rest of Matt's steps for aligning it and then do a CAD=Part it is still misaligned like step 5) had no effect. I'm programming offline. Thanks in advance for any help.

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  • I just finished going through all the steps again using iterative alignments. Same results. So I'm wondering if my expected results are incorrect and my actual results are right. Because I have always transformed the CAD model prior to any programming the CAD axes were always the same as the machine. So if I did a plane on top of the part, the surface vectors would be in Z as expected. But on the part I just did the surface vectors are in X. In my graphic display window the probe tip is correctly orientated to part. Am I expected the wrong outcome here? Is this as it should be?


    You're not changing the part CAD vectors. You're orienting the machine to the part. So, if the probe is oriented correctly in the graphics window, then you have succeeded.

    Said another way, instead of transforming the part, you have transformed the machine.
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  • I just finished going through all the steps again using iterative alignments. Same results. So I'm wondering if my expected results are incorrect and my actual results are right. Because I have always transformed the CAD model prior to any programming the CAD axes were always the same as the machine. So if I did a plane on top of the part, the surface vectors would be in Z as expected. But on the part I just did the surface vectors are in X. In my graphic display window the probe tip is correctly orientated to part. Am I expected the wrong outcome here? Is this as it should be?


    You're not changing the part CAD vectors. You're orienting the machine to the part. So, if the probe is oriented correctly in the graphics window, then you have succeeded.

    Said another way, instead of transforming the part, you have transformed the machine.
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