4th Axis?

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Re: 4th Axis?

Post by DanMc » Thu Sep 03, 2015 1:13 pm

4th axis has been on my wish list for a long time now. Personally though I'd like to do an indexed 4th while maintaining the existing X,Y, and Z, this would allow the spindle to have way better access than a Y, Z, A or similar.

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Re: 4th Axis?

Post by adamsd5 » Tue Apr 19, 2016 3:32 am

I am also interested in the 4th axis, especially as Fusion 360 has 3+1 support now and continuous 4th axis coming.

Would this technique work to control both Y-axis steppers from the same socket?

http://www.shapeoko.com/wiki/index.php/ ... ries_2.png

This link also talks about connecting two steppers to the same driver:

http://www.shapeoko.com/forum/viewtopic ... 1095#p8814

I imagine there might need to be some software changes to change the second Y-axis to an A-axis. I think I could handle this work. I don't know if there would be too much current drawn from the first Y-axis.

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Re: 4th Axis?

Post by WillAdams » Tue Apr 19, 2016 3:49 am

No. That allows driving one axis w/ two motors turning opposite.

One ingenious alternative is to use a 4th axis driven by a rack and pinion.

Other ideas on the wiki: http://www.shapeoko.com/wiki/index.php/ ... ional_Axis
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Re: 4th Axis?

Post by PsyKo » Tue Apr 19, 2016 7:48 am

adamsd5 wrote:I am also interested in the 4th axis, especially as Fusion 360 has 3+1 support now and continuous 4th axis coming.
Did you find any date for this feature ? Any forum thread, any mail or something ? I'm interested as well.
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Re: 4th Axis?

Post by Shook » Tue Apr 19, 2016 5:57 pm

There's a guy on youtube (CNCNutz) that built his own 4th axis. I forget what he's using for cam / control
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