| 摘要 |
<p>#CMT# #/CMT# A machine tool comprises spindle (2) attached with a tool; machining unit (3) by which the spindle is supported to be movable in X, Y, and Z axes directions; and long bed having machining areas arranged in one direction and on which the machining unit is mounted. The machining unit is movable in an arrangement direction of the machining areas and is disposed on the bed to be bridged over a machining table and supports the spindle. It further includes gate-shaped column (8), cross rail (9), cylindrical saddle (10), and ram (11). #CMT# : #/CMT# A machine tool comprises spindle attached with a tool; machining unit by which the spindle is supported to be movable in X, Y, and Z axes directions; and long bed having machining areas arranged in one direction and on which the machining unit is mounted. The machining unit is movable in an arrangement direction of the machining areas and is disposed on the bed to be bridged over a machining table and supports the spindle. It further includes gate-shaped column in which right and left column main bodies disposed on the bed are coupled by front and rear cross frames; cross rail having a rectangular shape in a plan view, between the front and rear cross frames and supported by the right and left column main bodies to be movable in the X and/or Y axis directions; cylindrical saddle supported to be movable in the X and/or the Y axis directions in the cross rail; and ram supported to be movable in the Z-axis direction in the saddle, where the spindle is attached to a lower end portion of the ram. The right and left column main bodies each have a rectangular shape. One of the column main bodies has an access opening sized to allow access to an operator. The other one of the column main bodies has a tool change window in a portion facing a tool change position, and a tool change arm can automatically change a tool attached to the spindle to a subsequent process tool held by a tool magazine through the tool change window. The cross rail has left and right flange portions supported by guide rails on upper surfaces of the right and left column main bodies. #CMT#USE : #/CMT# For machining wide and long workpiece. #CMT#ADVANTAGE : #/CMT# The machine tool provides high-speed movement of a spindle, thus reducing the machining time without any increase in size of the whole machine. It is capable of ensuring machining accuracy when a wide and long workpiece is machined. It is capable of suppressing cost increase of a cover even when a long workpiece is machined. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The figure is a perspective view of a machining unit. 2 : Spindle 3 : Machining unit 8 : Column 9 : Cross rail 10 : Saddle 11 : Ram #CMT#MECHANICAL ENGINEERING : #/CMT# Preferred Components: The spindle is moved in the X, Y, and Z axes directions while the machining unit is kept positioned in one of the machining areas, thus machining a workpiece.</p> |
