Clamp nut and collet chuck
AssigneeBig Alpha Co., Inc.
InventorTsuyoshi Komine
Life of this patent
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Abstract
The present invention enhances the lubricating property of the sliding surfaces of a clamp nut and a collet, reduces a friction coefficient, prevents the occurrence of seizure, and enhances durability. Accordingly, it is possible to rotate the clamp nut and the collet without causing vibrations due to imbalance. Moreover, this invention provides a clamp nut that can maintain tool-mounting accuracy for a long period of time even in the case of high-speed rotation, and also provides a collet chuck including such clamp nut. Concerning the clamp nut which is mounted on a collet chuck body for holding tools in the collet and which clamps the collet chuck body and the collet together, at least a part of the clamp nut which comes in contact with the collet is made of oil-bearing metal.
Claims20
A clamp nut for clamping a collet chuck body and a collet together, the clamp nut being mounted on the collet chuck body for holding a tool in the collet, wherein at least a part of the clamp nut in contact with the collet is made of a porous material, and pores of the porous material are filled with a fluid.
A collet chuck comprising a collet chuck body for holding a tool in a collet, and a clamp nut for clamping the collet chuck body and the collet together, the clamp nut being mounted on the collet chuck body for holding a tool in the collet,
- wherein at least a part of the clamp nut in contact with the collet is made of a porous material, and pores of the porous material are filled with a fluid.
Dependencies are inferred from the claim text.