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Worm gear without RT


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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?
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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.
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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. 1128_9bcf10d490cf351b9822b8c7934b4a21.jpg

After that you have to select "automatic stylus selection", see screenshot 2. 1128_add586ac48d9b396d85e6bd94e803424.jpg

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. 1128_f09394e88f15ca7e2c0c05405a72cb9b.jpg
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