Patent ID: 7404347

Claim:
A working device having a work head provided with a work spindle which rotates a workpiece, and a noncircular working device, the noncircular working device, comprising: a noncircular working unit provided with multiple cutting tools; a noncircular working unit base which turnably supports the noncircular working unit; a motor for noncircular working which is attached to a housing and reciprocates the noncircular working unit and the noncircular working unit base; and motorized means for rotating the turnably supported noncircular working unit and thereby indexing the noncircular working unit around an axis line parallel to the axis line of the workpiece, the motorized means being mounted separate from the noncircular working unit and the noncircular working unit base, and thereby not reciprocated by the motor for noncircular working, wherein the cutting tools mounted on the noncircular working unit are attached radially to the turning direction of the noncircular working unit.