Worm gear without RT

[[Di...]]

Hello!
My customer wants to buy CMM without RT for measuring worm gears. I work on CMM with RT and I showed measuring only with RT in GEAR. I can measure worm (pith, profile...) in Calypso without RT, but l don't know how I can do it in GEAR?

[[Ro...]]

Are you talking about a worm shaft? The easiest way to recommend you how to do with GEAR PRO is if you post an picture to get a feeling about the dimension of the part.

[[Di...]]

Yes, worm shaft

IMG_20200917_121503.jpg

[[Ro...]]

Ok, I thought a real picture 😉

However, you´ll require a 4-star stylus system (maybe 2 stylus can be enough but I would start with 4), see screenshot 1.

After that you have to select "automatic stylus selection", see screenshot 2.

The rest should be automatically calculated by GEAR PRO worm itself.
You can also try to do a simulation first that you get an impression how the CMM will move.

The big disadvantage of the measuring method without RT is, that you have a lot of stylus changes on the flank while the lead measurement. So the consequence can be, that with any single sphere mid point difference of the 4 styli you´ll see a "jump" in the lead evaluation, if you will get this, you have to re-qualify your stylus system againg, see screenshot 3.

[[Di...]]

Thanks idea. 😉 . I will try)). I will write about results)

[[Di...]]

I can't measure lead and axial pitche. This message writes :

IMG_20200918_114212.jpg

[[Di...]]

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In the end I have this message

IMG_20200918_122155.jpg

[[Ro...]]

Very difficult to help you without the drawing and your measurement program of GEAR PRO. I suggest that you get in contact with your ZEISS support team.