Method and device for the dynamic lubrication of a power chuck
AssigneeForkardt Schweiz AG
InventorErwin Bohler
Life of this patent
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Abstract
Moving parts of the chuck are enclosed in a sealed cavity which is provided with a circulating lubrication. The power which drives its flow is derived from the force needed for opening and shutting the tongs of the chuck. In a chuck with hydraulically actuated jaws, this power is delivered by the pressure differences that occur between different parts of the hydraulic circuit actuating the jaws of the chuck and the hydraulic liquid acts also as lubricant.
Claims16
Method for lubricating moving parts of a power chuck (mounted on the headstock of a machine tool) characterized in that said parts are enclosed in an essentially sealed cavity or form a boundary of the same, and in that some lubricating fluid enters the cavity and/or leaves it during the opening and closing movements of the chuck.
Power chuck for movable elements or opening and closing its jaws, characterized in that at least one such element is enclosed in or forms a boundary of an essentially sealed cavity which is at least temporarily connected through at least one supply channel with a source of lubricating fluid and at least temporarily connected through at least one discharge channel with a sink for the lubricating fluid.
Dependencies are inferred from the claim text.