Flute pieces for engineers tools
AssigneeMarwin Cutting Tools Limited
InventorDennis Harry Wale
Life of this patent
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Abstract
A flute piece consisting of a piece of tungsten carbide twisted or formed such that the flute piece has at least two helical cutting edges and an axis through which the tungsten carbide material extends. The flute piece is intended for an engineers' tool for working ferrous or non-ferrous metal, plastics or wood, such as a twist drill or a milling or boring cutter for a machine tool. A shank member has an extension web on one end thereof which is provided with a helical slot for reception of the flute piece.
Claims8
An engineer's rotary tool for working ferrous and non-ferrous metals, plastics, and wood comprising an elongated flute piece having a longitudinal axis of rotation and formed entirely of tungsten carbide, said flute piece having at least two helical cutting edges symmetrical about said axis, an elongated shank having an extension web on one end thereof, said web having a slot formed transversely therethrough, said slot being helical and symmetrical about said axis and complementary to said helical cutting edges, and one end portion of said flute piece being engaged in said slot.
Dependencies are inferred from the claim text.