giving him a sort of rotary 4th axis. His idea was to directly use the stepper motor to rotate the workpiece without any gearing, but he needed to build his own rig to do so. His initial prototype ...

Figure 2-6: Simulation of a dual rotary mechanism fastened to the table of a standard 3-axis CNC milling machine. Tool length offsets work the same way here as with any conventional 3-axis machine.

The trickiest part of the move to the new location was getting the machine to fit through the barn doors, requiring some impromptu disassembly of the Z-axis assembly, which required the use of an ...

Full 4th axis rotary table with direct drive motor enabling speeds of 125rpm and positioning of ±2.5 arc/sec. Maximum work piece size of 24.80 ” x 29.33 ” (Dia ...