Patent ID: 7024974
Filing Date: 2006-04-11
Classification: B23B,B23Q,Y10T

Abstract:
1. A vertical machine tool with a movable main spindle comprising: a base of said machine tool; the main spindle having an axis directed vertically to a floor surface and provided at a tip end with a chuck; a headstock, being movable at least in a first direction in parallel with the axis of said main spindle, for rotatably supporting said main spindle; a tool rest provided on said base and on which a single or a plurality of tools is mounted; and a splash guard, provided on said base, for covering a machining area of said machine tool, wherein said headstock or said tool rest is relatively movable in a second direction perpendicular to the first direction, one end of a bar workpiece, having a longer axial dimension than a radial dimension and kept to project at a predetermined length under the condition that the bar workpiece is inserted into said main spindle, is gripped by the chuck, said headstock and said tool of said tool rest move relative to each other to machine the bar workpiece into a predetermined shape, and a part which has been subjected to the machining is cut off as a machined workpiece in a predetermined position by a cut-off tool, and wherein said machine tool further comprises: a bar workpiece supporting means, provided above said headstock, for supporting the other end of the bar workpiece inserted into said main spindle, and a workpiece transfer means provided on said base and receiving the machined workpiece, which has been subjected to the cutting machining, from the chuck and transferring the machined workpiece to an outside of the machining area of said machine tool.