If you are not into CNC, this article may make no sense to you at all. Actually, if you are into CNC, it still might not make much sense :)
This article explains how to take the feed rate for a cutter and translate it into the correct RPM for rotating an A axis plus the correct X axis feed rate that gets you the desired radial depth of cut.
If you are interested, please see
http://rick.sparber.org/TTFR.pdf
Your comments are welcome. All of us are smarter than any one of us.
Rick,
Yes, it makes sense based on your conceptual analysis by first considering cutting around the A-axis even if the tool was stationary in the X-axis. Also makes sense looking at the problem from the vector sum and preventing the milling cutter from cutting a helix (although this will be an ideal application for your setup).
Thank you for the article, Paul
Paul,
The best way to cut a helix is to index the A axis. Something like G1 F3 X1 A360 would give you 1 TPI I think.
Rick
Thanks Rick! We've added your CNC Feed Rate Translation Method to our CNC category, as well as to your builder page: Rick Sparber's Homemade Tools. Your receipt:
<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="http://www.homemadetools.net/cnc-feed-rate-translation-method"><img src="http://www.homemadetools.net/uploads/134154/cnc-feed-rate-translation-method.jpeg" /></a></div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="http://www.homemadetools.net/cnc-feed-rate-translation-method">CNC Feed Rate Translation Method</a> <span> by <a href="/builder/Rick+Sparber">Rick Sparber</a></span> </div> <div class="tags">tags: <a href="http://www.homemadetools.net/tag/cnc">CNC</a></div> </div> </div> </div>