CAD NOT ALIGNED AFTER MIRROR

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smudge611
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CAD NOT ALIGNED AFTER MIRROR

Post by smudge611 » Fri Oct 25, 2019 11:00 am

Okay I imported a CAD
did a CAD alignment
then a datum alignment to fine tune.
set up the program
and rand it
got good results on the report

mirrored the program
(fixture is for a LH RH headlamp)
made a few naming changes
ran the program and below are my results
makes no sense.
after each alignment I had to manually re-sync the cad as well
Capture.JPG
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smudge611
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Re: CAD NOT ALIGNED AFTER MIRROR

Post by smudge611 » Fri Oct 25, 2019 11:43 am

Figured it out after trying to mirror again.
Apparently the unmirrored axis should have been x not y
which makes no sense since it was always normally done on the y axis in all my programs in metrolog

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CrashN8
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Re: CAD NOT ALIGNED AFTER MIRROR

Post by CrashN8 » Mon Oct 28, 2019 12:15 pm

UN-mirrored axis... I think the UN is key here. Sorry for the confusion. Glad to hear you have this working now.

smudge611
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Re: CAD NOT ALIGNED AFTER MIRROR

Post by smudge611 » Wed Nov 13, 2019 11:41 am

Another issue I have ran into,
I did a CAD Alignment
Then a Datum Alignment to verify
Programmed and ran with good numbers
Mirrored and ran program
CAD Alignment is fine
Datum Alignment throws CAD( and nominal s) way off in space and not Synced
Why?
See video below


https://www.dropbox.com/s/wgteje5giv93b ... 3.mp4?dl=0

And I tried running the mirrored program without the Datum alignment and the x and y of the nominal are negative
but as you can see from the video they are positive on the CAD
Capture.JPG
Okay when I first attempted to mirror this program, I left everything default when I mirrored it and it came up with a few probe angles that where in red. So i changed the mirrored axis and got the results above.

After saving the original program and record the above video I again mirrored with default setting and nominal s are fine. Why would it be different?
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pxlpsh
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Re: CAD NOT ALIGNED AFTER MIRROR

Post by pxlpsh » Wed Nov 13, 2019 4:31 pm

HAVE HAD PROBS LIKE THIS:
1) BEFORE MIRROR: DELETE CAD AND DATUM ALIGN.
2) AFTER MIRROR: REBUILD ALIGN.
3) RIGHT CLICK ON PROGRAM: SELECT ALL, UPDATE REPORT, AND THEN UPDATE NOMINALS.

HOPE THIS HELPS.

Cy Goughman
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Re: CAD NOT ALIGNED AFTER MIRROR

Post by Cy Goughman » Tue Dec 31, 2019 1:56 pm

1) After you mirror a program, you need to double check the preliminary alignment (before the datum alignment) for relevance to the drawing. If the axes didn't flip as expected, you night need to change some axis vectors.

2) If your datum alignment command imports the datum target points as extracted from a cloud, the .DAT file for the un-mirrored version won't work. You'll need to make a new extracted .DAT from the same cloud - but with the mirrored values from your new preliminary alignment. Then, edit your datum alignment to use the new data.

HTH

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Re: CAD NOT ALIGNED AFTER MIRROR

Post by CMM Guru » Thu Jan 02, 2020 1:06 pm

There have been a lot of changes and improvements to mirroring (in particular, programs that include a CAD align) in 3.9 SP1. We have yet to find a program that does not mirror properly as long as you follow the rules. (Doesn't mean someone won't find one still!).

And, don't forget - mirroring is psuedo-mirroring. The mirrored program *must* still maintain a RH rule axis system that means if one axis is mirrored a 2nd axis *must* go along for the ride (flip as well) in order to maintain the RH rule. Hence the option to control which axis is the unmirrored axis.

And the point from Cy Goughman is a good one. Look at what your result is before you click "accept"...

NOTE: Mirroring is around the CURRENTLY ACTIVE ALIGNMENT. Where you cursor is in the program will affect your results.

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