Machine tool

Details Machine tool Machine tool

B - Operations, Transporting

26

D

164/88

B26D 5/00 (2006.01) B26D 7/00 (2006.01)

Patent

CA 1165684

ABSTRACT OF THE DISCLOSURE A machine tool consisting of a portal stand comprising a number of, preferably four, screw pillars (2). A moveable yoke (6) is driven and guided along the screw pillars by means of nuts (7) preferably roller nuts. Tools, machining devices or the like can be attached to the yoke. The nuts are driven simultaneously by a driving means (8) by way of a drive shaft (9) extending therefrom. A very good parallel holding of the yoke (6) is achieved despite uneven loads. When the power demand is high, for example during heavy pressings, a help cylinder (12) is needed for driving, the piston rod (13) of which is fixed to the yoke (6). (Fig. 2)

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