Patent ID: 8523500
Filing Date: 2013-09-03
Classification: B23Q,Y10T

Abstract:
1. A machine tool comprising: a machine platen; a Z table provided on the machine platen and slidably movable only in a Z direction relative to the machine platen, the Z direction forming one direction in a horizontal plane; a supporting body disposed on the Z table and which is slidably movable only in a vertical direction relative to the Z table, the supporting body having a front surface side disposed to face a workpiece; a rotation arm rotatably supported on the front surface side of the supporting body, the rotation arm rotatable 360 degrees about a horizontal rotation arm axis that extends in the Z direction; an arm drive source for rotating the rotation arm; a processing spindle rotatably supported on the rotation arm at a position distanced from the rotation arm axis, the processing spindle extending in the Z direction from the rotation arm, and the processing spindle rotatably supported with respect to the rotation arm so as to be rotatable relative to the rotation arm about a horizontal processing spindle axis that extends in the Z direction, the horizontal processing spindle axis being parallel with and spaced from the horizontal rotation arm axis; and a spindle drive source for rotating the processing spindle, wherein the machine tool is free of a mechanism that moves any of the Z table, the supporting body, and the arm drive source in an X direction that forms another direction in the horizontal plane and is perpendicular to the Z direction.