Patent ID: 7509898
Filing Date: 2009-03-31
Classification: B23Q,Y10T

Abstract:
1. A workpiece machining apparatus for machining an elongated workpiece having first and second ends, the apparatus comprising: a plurality of workpiece support devices supporting the workpiece; a rotation drive device fixing the first end of the workpiece and rotating the workpiece about the axis of the workpiece; a tailstock having a tailstock spindle that is pressed against the center of an end face of the workpiece at the second end of the workpiece; a plurality of travel drive devices provided in each workpiece support device, wherein each travel drive device causes the each workpiece support to travel between the rotation drive device and the tailstock; and a control device that synchronously controls the travel drive devices, thereby controlling the travel of the workpiece support devices, wherein the workpiece support devices are arranged between the rotation drive device and the tailstock, the workpiece is held tightly by a spindle of the rotation drive device and the tailstock spindle of the tailstock, and the tailstock is capable of moving closer to and apart from the rotation drive device.