Ram guiding apparatus of machine tool

Abstract

A support configuration enabling reciprocative movement of a ram by use of a saddle in order to suppress vibration of the ram, and chattering phenomenon of a cutting tool, thereby aiming at not only improvement in heavy cutting, and improvement of a finished surface, but also extension in service life of the cutting tool, and prevention of breakage of the cutting tool. A ram guiding apparatus 1 of a machine tool is incorporated in a portal type machine tool 2 and provided with a cross saddle 5 that is cross-like in shape, as seen in a side view of the machine tool 2, provided so as to be freely movable in the horizontal direction along a horizontal cross beam 4. The cross saddle 5 has a box 18, both upper and lower faces thereof being open, in front side of a horizontal part, wherein a first linear guide 21, a second linear guide 22, and a third linear guide 23, respectively serving as linear guides in the box 18 for a ram vertical movement guide the ram 9 so as to be freely movable only in the vertical direction.

Dependencies are inferred from the claim text.