| 摘要 |
A numeric control machine tool (1) of the type comprising: a basement (2); a substantially rectilinear main supporting crossmember (4) which extends above the basement (2) and has two axial ends (4a) structured so as to rest stably and in an axially sliding manner on two reciprocally parallel rectilinear guides (3) present on the basement (2); a movable slide (11) which is fixed protruding onto a side (4b) of the main supporting crossmember (4), with the possibility of moving along the body of the main supporting crossmember (4); a substantially rectilinear vertical movable tower (12), which is fixed on the movable slide (11) in a substantially vertical position and with the possibility of translating with respect to the movable slide (11) in a vertical direction; and a tool- holder head (16) which is fixed on the lower end of said vertical movable tower (12); the main supporting crossmember (4) being structured so as stably to support the weight of the movable slide (11), the vertical movable tower (12) and the tool-holder head (16), and the numeric control machine tool (1) also comprising a substantially rectilinear auxiliary supporting crossmember (17), which extends beside the main supporting crossmember (4) so as to be locally facing and distanced from the side (4b) of the crossmember which supports the movable slide (11); and on which the movable slide (11) rests by means of interposition of a reaction member (19) which is structured so as to vary its height, simultaneously exercising an upward thrust (f) on the projecting arm (18). |
