Patent ID: 7448120
Filing Date: 2008-11-11
Classification: B23C,B23Q,Y10S,Y10T

Abstract:
1. A long workpiece machining apparatus for machining a long workpiece having a constant sectional shape while rotating the long workpiece around a horizontal axis O extending in the length direction of the long workpiece, the long workpiece machining apparatus comprising: a base frame that is positioned below the horizontal axis O and that extends along the horizontal axis O; a pair of clamp units that are positioned at the two ends of the base frame; a pair of support units that are positioned in the lengthwise inside of the clamp units, that are capable of moving along movement guides disposed parallel to the horizontal axis O, that horizontally support the long workpiece in two locations, and that are capable of moving vertically; and one or a plurality of machining units that are capable of moving over the base frame along movement guides disposed parallel to the horizontal axis O, and that are capable of machining the long workpiece; wherein the clamp units are capable of moving from the outside of the ends of the long workpiece toward the inside; the clamp units horizontally support the long workpiece in two locations; and the clamp units rotate in synchronization with each other around the horizontal axis O; each of said clamp units comprising: wherein each of said support units have a pair of free-rotating rollers that are supported at the lower ends so as to rotate freely around an axis, and that intersect with each other to form a V shape that opens upward;