| 摘要 |
A machine tool ( 1 ) for machining by chip removal, in which a machining head ( 2 ) operates while being positioned in a horizontal plane and is mounted on a vertical bed ( 3 ) to which it discharges the forces (F) by which it is axially stressed, this vertical bed ( 3 ) being connected to a supporting structure ( 4 ). The vertical bed ( 3 ) is pivoted on the supporting structure ( 4 ) and there are interposed between the vertical bed and the supporting structure one or more bars ( 5 ) whose axial length (L) can be varied by magnetostriction produced by electric currents whose characteristics are determined continuously by a control device ( 6 ) in such a way as to counteract the horizontal movements of the vertical bed ( 3 ), thus keeping the machining head ( 2 ) fixed with respect to the workpiece ( 7 ) which it is machining. |
