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- Oct 14, 2014
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*NOTE* Repost from Camsoft forum of CNCzone.com. I'm the resident guru there. This is my 2013 winter project
One big weakness on a CNC knee mill is lack of travel in Z making it very hard to do toolchanges without moving the knee and losing your part 0 setting. This is my project to install a ballscrew in place of the acme hand screw and integrate it into my control.
First, I had to build two air cylinders to counter balance the weight of the knee. I found a couple scrap 3" air cylinders but had to do a complete refabrication to fit this application.
One big weakness on a CNC knee mill is lack of travel in Z making it very hard to do toolchanges without moving the knee and losing your part 0 setting. This is my project to install a ballscrew in place of the acme hand screw and integrate it into my control.
First, I had to build two air cylinders to counter balance the weight of the knee. I found a couple scrap 3" air cylinders but had to do a complete refabrication to fit this application.