Drilling tool, blank for drilling tool, and method for manufacturing blank for drilling tool
AssigneeOsg Corporation
InventorsKoki SANADA, Ken NAKAMURA, Kenichi SAKODA
Life of this patent
Estimating the term…
Abstract
A drilling tool includes: a core material; and an outer material located around the core material. An integrated hole is formed in the outer material, and when viewed from a distal end side in a longitudinal direction, the integrated hole has: an insertion area in which the core material is inserted; and an oil-hole area that communicates with the insertion area. An oil hole is defined by an outer periphery of the core material inserted in the insertion area and an edge of the oil-hole area of the outer material.
Claims11
A drilling tool comprising:
- a core material;
- and
- an outer material located around the core material,
- an integrated hole being formed in the outer material,
- when viewed from a distal end side in a longitudinal direction, the integrated hole having:
- an insertion area in which the core material is inserted;
- and
- an oil-hole area that communicates with the insertion area,
- an oil hole being defined by an outer periphery of the core material inserted in the insertion area and an edge of the oil-hole area of the outer material.
A blank for a drilling tool, the blank comprising:
- a core material;
- and
- an outer material located around the core material,
- an integrated hole being formed in the outer material,
- when viewed from a distal end side in a longitudinal direction, the integrated hole having:
- an insertion area in which the core material is inserted, and
- an oil-hole area that communicates with the insertion area,
- an oil hole being defined by an outer periphery of the core material inserted in the insertion area and an edge of the oil-hole area of the outer material.
A manufacturing method for a blank for a drilling tool, the manufacturing method comprising:
- a step of forming a core material;
- a step of forming an outer material in which an integrated hole is formed,
- when viewed from a distal end side in a longitudinal direction, the integrated hole having
- an insertion area in which the core material is inserted, and
- an oil-hole area that communicates with the insertion
- a step of defining an oil hole, by inserting the core material into the insertion area, by an outer periphery of the core material inserted in the insertion area and an edge of the oil-hole area of the outer material.
Dependencies are inferred from the claim text.