CINCINNATI MACHINES 5 Axis CNC Cutter and Tool Grinder. 2 Model Sizes V5A and V5Ae with capacities up to 16" X axis, 9" Y axis, 10" Z axis, 360º C axis, 190º A axis 10" Max tool length, 8" Max tool dia. #40 or #50 Taper tools 4Axis also available See .
One sees 4, 5, and even 6 axis tool grinders. At the very least, we need a 4th axis. That axis would be used to follow the helix of a drill bit or milling cutter. That 4th axis is rotary and can be parallel to either X or Y, but given the shape of the machine, it seems that balance might be better if it is parallel to X. I .