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Rotary axis question
« on: April 09, 2007, 08:14:56 PM »
I understand the right hand rule for X,Y and Z.  But if I am stand behind the A rotary axis would clockwise be positive?

Thanks

Dan.

Offline Graham Waterworth

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Re: Rotary axis question
« Reply #1 on: April 10, 2007, 03:27:13 AM »
Hi Dan,

Normally yes.

But people do have them the other way too. Its always a grey area when sharing g-code, they make mirrors of your parts, so it always pays to put a note in the g-code to tell them which way is plus for the program.

Graham.
Without engineers the world stops
Re: Rotary axis question
« Reply #2 on: April 10, 2007, 08:14:58 AM »
Thanks Graham...

Well I tried a new piece of software that did some engraving on a band and the text is coming out inverted (mirrored). The only thing I can think of is the rotary axis is turning the wrong direction. 

And in fact I never looked but I also would believe (guess) that the positive direction would turn the table so that the degree markings on the table would be increasing 0-360 and negative would be decreasing 360-0 values.