DRILL HAVING SINGLE CRYSTAL DIAMOND AT ITS TIP

Title:

DRILL HAVING SINGLE CRYSTAL DIAMOND AT ITS TIP

Document Type and Number:

Japanese Patent JP3540256

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a technology of machining a drill top considering machining property and abrasion resistance of the edge lip of quadrangular pyramid and to provide a reaming effect and a dimension measuring effect, in a single crystal diamond drill.
SOLUTION: The tip of the single crystal diamond (hexahedron diamond 1) has the quadrangular pyramid, and the center line of the quadrangular pyramid matches to one crystal axis of the single crystal diamond and a drill axis. When the tip of the diamond is projected on an axis perpendicular plane of the drill axis, the projected image of the edge of the quadrangular pyramid is angled by 45°±5° with respect to two remaining crystal axes, and further a pair of sharpnesses of the quadrangular pyramid are in a range of 90°±10°.

Inventors:

Katsuyuki Abe

Application Number:

JP2000223252A

Publication Date:

July 07, 2004

Filing Date:

July 25, 2000

Export Citation:

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