Patent ID: 9684298
Date: 2017-06-20
CPC Classifications: B23C,B23Q,G05B

Claim:
1. Numeric control machine tool ( 1 ) of the type comprising a basement ( 2 ) and a substantially rectilinear main supporting crossmember ( 4 ) which extends above the basement ( 2 ) remaining locally parallel to a first substantially horizontal reference axis (Y), and has the two ends ( 4 a ) structured so as stably to rest in an axially sliding manner each on a respective rectilinear longitudinal guide ( 3 ) which extends on the basement ( 2 ) parallel to a second reference axis (X) substantially horizontal and perpendicular to the first axis (Y); the machine tool ( 1 ) also comprising: a movable slide ( a substantially rectilinear, movable vertical tower ( the main supporting crossmember ( 4 ) being structured so as to stably support the weight of the movable slide ( 11 ) and the movable vertical tower ( 12 ); the numeric control machine tool ( 1 ) being characterised by also comprising a substantially rectilinear auxiliary supporting crossmember ( 17 ) which extends beside the main supporting crossmember ( 4 ) so as to locally face and be spaced from the side ( 4 b ) of the crossmember which supports the movable slide ( 11 ); and in that the movable slide ( 11 ) is provided with at least one projecting arm ( 18 ) which protrudes towards the auxiliary support crossmember ( 17 ) until it crosses the auxiliary supporting crossmember ( 17 ), and rests on the auxiliary supporting crossmember ( 17 ) with the interposition of a reaction member ( 19 ) which is structured so as to vary its height (h) exercising on the projecting arm ( 18 ) an upward thrust (f) having a value such as to produce, on the main supporting crossmember ( 4 ), an additional mechanical moment (Mc) which is substantially equivalent and opposite to the mechanical moment (Mp) which the weight of the movable slide ( 11 ) and of the movable vertical tower ( 12 ) naturally generate on the main supporting crossmember ( 4 ) due to the distance between the barycenters of the movable slide ( 11 ) and of the mobile tower ( 12 ) and the side ( 4 b ) of the crossmember which supports the movable slide ( 11 ).