Machine tool, more particularly for drilling and milling
AssigneeMaschinenfabrik Berthold Hermle AG
InventorHans-Dieter Braun
Life of this patent
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AssigneeMaschinenfabrik Berthold Hermle AG
InventorHans-Dieter Braun
Estimating the term…
A machine tool more particularly for drilling and milling, possesses a machine bed, on which a power driven longitudinal slide is adapted to run horizontally on rails. A machining head having a rotary drive device for at least one table forming part of said head, is power moved on the longitudinal slide in at least one further direction of movement. The machine bed possesses two spaced lateral walls, whose intermediate space is designed to serve as a machining zone for receiving at least one work holding means. On the two lateral walls two parallel guide rails are arranged for the longitudinal slide, a third guide rail being arranged with an offset in the longitudinal direction between the two other guide rails. The longitudinal slide is guided using three guide elements on the three guide rails, the power drive being at or adjacent to the central guide rail. On this arrangement a clamping yoke of relatively light design may be employed, which only requires one central drive. Transverse forces caused by twisting in the case of eccentric loading act perpendicularly on the guide elements, which are accordingly better able to withstand the forces.
A machine tool for drilling and milling, comprising a machine bed, guide rails mounted on said bed, a power driven longitudinal slide adapted to run horizontally on said rails on said bed, a machining head, and a rotary drive device forming part of said head for at least one tool, said head being adapted to be power moved on the longitudinal slide in at least one further direction of movement, wherein the machine bed possesses two spaced lateral walls defining an intermediate space between them, which is designed in the form of a machining zone adapted to accommodate at least one work holding means, on the two lateral walls two parallel guide rails for the longitudinal slide are arranged, a third guide rail is arranged which is approximately half way between the two other guide rails with an offset in the longitudinal direction, and the longitudinal slide is guided using three guide elements on the three guide rails, the power drive being at or adjacent to the central guide rail.
Dependencies are inferred from the claim text.