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US 2014/0252726 A1Published application
Clamping chuck with integrated drawbar
AssigneeSystem 3R International AB
InventorErik Mellström
Life of this patent
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Abstract
A clamping device for machine tools, comprising a chuck (1.1) and a drawbar (1.2) for clamping separate pallets (1.3), with a bayonet-connection via rotational motion of that drawbar (1.2). Rotational motion of the drawbar (1.2) is guided and determined by means (2.5, 2.7, 2.6, 2.4, 2.12, 3) provided in the chuck housing (2.3) interacting with the drawbar (1.2, 2.13). The drawbar (1.2) is turnable mounted in the chuck (1.1) to impede the drawbars extraction out of the chuck, independent if the drawbar (1.2) is in clamping or unclamped condition.
Claims12
A clamping device for machine tools, comprising:
- a chuck and a drawbar for clamping separate pallets, whereby the drawbar possesses at least one projection for entering a form-locking connection with a separate pallet by a rotational motion of that drawbar;
- the chuck has an inner guidance channel in which the drawbar is loosely positioned;
- the chuck includes means for interacting with the drawbar for the rotational and guided motion of the drawbar;
- the drawbar is turnable journalled mounted in the inner guidance channel is form-locking designed with respect to the inner guidance channel and with respect of the chuck to impede the drawbar's extraction out of the chuck, whether the drawbar is in clamping or unclamped condition.
1 more element
Dependencies are inferred from the claim text.