Cutting tool
AssigneeTokyo Shibaura Denki Kabushiki Kaisha
InventorHiroshi Shikata
Life of this patent
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Abstract
A cutting tool comprises a bit-holder fed at a prescribed feed amount f per rotation of the workpiece, and a throw-away tip which is formed of superhard metal, which has an outer peripheral surface of prescribed shape, an inner peripheral surface provided concentrically with the outer peripheral surface, similar to the prescribed shape of the outer peripheral surface and defining a hollow part and a predetermined thickness t and which is detachably mounted to the bit-holder. A distance .omega. between the inner peripheral surface of the throw-away tip and the outer peripheral surface thereof is defined within a range satisfying the following formula represented by; f.sub.max .ltoreq..omega..ltoreq.t.
Claims18
A cutting tool for operating on a rotating workpiece, said cutting tool during use being fed relative to said workpiece in a direction of an axis of rotation of said workpiece by a prescribed feed amount f per revolution of said workpiece, said cutting tool comprising:
- a bit holder;
- and
- a throw-away tip which is formed of superhard metal, which has an outer peripheral surface of prescribed shape, an inner peripheral surface provided concentrically with the outer peripheral surface and defining a hollow part and a predetermined thickness t which detachably mounted to the bit holder,
- wherein a distance w between the inner peripheral surface of said throw-away tip and the outer peripheral surface thereof is defined within a range satisfying the following formula represented by:
- f.sub.max .ltoreq..omega..ltoreq.t,
- where f.sub.max is a maximum value for f.
Dependencies are inferred from the claim text.