1
General Mach Discussion / Re: DIY oscillating tangential knife cutter.
« on: May 06, 2010, 04:45:30 PM »
The best impression I can give of what I'd like is here : http://www.comagrav.com/oscillating_tangential_knife.html
This gives a decent overview of the capability I'm looking for. In my previous incarnation as an architecture student at the Swiss Federal Institute of Technology in Lausanne, Switzerland (EPFL) we had a Zund 1200 machine in the shop that still makes my palms itch whenever I think of it : ) Now imagine that my available budget is about 1/10th the cost of a regular machine .... I'm basing this on this model here : http://solsylva.com/cnc/rack_pinion.shtml and adapting this http://www.razertip.com/foredom.htm to it as a tool tip.
At least that's the theory. If you can tell me what kind of motor size I'm looking at for rotating the knife and what a good approach would be to mount it that would be great. Did I mention I'm an architecture student ? : ) I'm only dabbling in mechanical engineering . As the Comagrav video shows, the tool typically raises out of the stock when rotating acute angles. Obviously curve cuts will require rotating in the material but this still shouldn't require a very big motor to do.
This gives a decent overview of the capability I'm looking for. In my previous incarnation as an architecture student at the Swiss Federal Institute of Technology in Lausanne, Switzerland (EPFL) we had a Zund 1200 machine in the shop that still makes my palms itch whenever I think of it : ) Now imagine that my available budget is about 1/10th the cost of a regular machine .... I'm basing this on this model here : http://solsylva.com/cnc/rack_pinion.shtml and adapting this http://www.razertip.com/foredom.htm to it as a tool tip.
At least that's the theory. If you can tell me what kind of motor size I'm looking at for rotating the knife and what a good approach would be to mount it that would be great. Did I mention I'm an architecture student ? : ) I'm only dabbling in mechanical engineering . As the Comagrav video shows, the tool typically raises out of the stock when rotating acute angles. Obviously curve cuts will require rotating in the material but this still shouldn't require a very big motor to do.