2nd Generation CNC Router Design 32.5” X 14” X 6”
I am working on a second generation CNC router design based on John’s popular JRGO router. The range of motion is 32.5” in the X dimension, 14” in the Y and 6” in the Z. The differences I have incorporated include:
1.) ¾” hardened shafts and roller linear bearings in place of skate bearings
2.) 3/8”-12 Acme precision lead screws in place of threaded rod.
3.) Stiffened the gantry
It is commonly stated in this forum that people will build a first machine, like the JRGO design, to expose themselves to CNC, giving them a platform to learn about the capabilities and limitations of hobby CNC. Then they will move on to a more accurate and capable machine. It is this second machine that I am targeting in this design.
Even though this machine uses higher performance components where required, minimizing cost is a driving requirement. To this end I am looking at utilizing common materials for things like bearing support blocks and lead screw nuts. Attached is a rendering of the proposed machine. Comments are welcome.
Greg