Re: Polar Coordinates CNC?

Hi All,

Now as a real mind twist, try to imagine the "bridge" over the top of
the rotating table as a semicircle. The only linear motion is the Z
axis, mounted on that rainbow over the rotating table. I had some
concept sketches done a few months ago, but ran into the problem of
cutting a straight line with no kerf angle. Basically this is
designed for contouring work with the center of the volume at the
center of rotation, but has some limitations relative to lead angle
of the tool vs. wall angle on the part. It would also require a long
Z axis travel. My next version included a linear axis under the main
rotary table, allowing straight line machining and vertical axis
holes to be drilled anywhere on the table. So 2 rotary and 2 linear
axis to handle 5 axis contouring. How can a control software
accomodate this machine?

Allan