Drilling/reaming tool
AssigneeKennametal Inc.
InventorsHerbert Rudolf Kauper, Jurgen Schwaegerl
Life of this patent
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Abstract
A drilling/reaming tool includes a basic body which extends in a longitudinal direction. The basic body includes at least one end-side drilling major cutting edge, a main flute which is assigned to said drilling major cutting edge and is wound at a first helix angle, and a plurality of reaming cutting edges which are arranged circumferentially on the basic body and have in each case one reamer flute which is assigned to the respective reaming cutting edge and is wound at a second helix angle. The reaming cutting edges adjoin the at least one major cutting edge directly in the longitudinal direction. Each reamer flute is merged into the main flute.
Claims14
A drilling/reaming tool comprising:
- a basic body which extends in a longitudinal direction and includes:
- at least two end-side drilling major cutting edges spaced circumferentially such that one major cutting edge follows the other major cutting edge upon rotation of the tool;
- at least two main flutes, each assigned to a respective one of the major cutting edges and wound at a first helix angle;
- a clearance land adjoining each major cutting edge in the circumferential direction and extending to the main flute assigned to the major cutting edge which follows;
- a land defined between the two main flutes which extends to the clearance land;
- and
- at least three reaming cutting edges arranged circumferentially in the land such that one reaming cutting edge leads and at least two follow upon rotation of the tool and have in each case one reamer flute which is assigned to the respective reaming cutting edge and is wound at a second helix angle,
- wherein each reamer flute extends from the clearance land and merges into one of the main flutes.
Dependencies are inferred from the claim text.