Metal cutting machining device, with massive block and sliding column and machine integrating this device

摘要

A device for machining a part by metal cutting comprising a massive block in a bore of which is located a sliding column guided in a front bearing and a rear bearing, at least the front bearing and the section of the column sliding therein being continuously convex in cross-section with three lobes distributed at 120° about a central axis. The front and rear bearings are hydrostatic journal bearings. The column supports a sliding block on which is mounted a slide in which is incorporated a turret head for dispensing cutting tools.