TOOL FOR CHAMFERING SMALL DIAMETER HOLE - NORITAKE SUPER ABRASIVE KK

Title:

TOOL FOR CHAMFERING SMALL DIAMETER HOLE

Document Type and Number:

Japanese Patent JP2004050317

Kind Code:

A

Abstract:

To provide a tool for chambering a small diameter hole reducing eccentric abrasion of a cutting edge, keeping a balance between the serviceable life and a finished surface accuracy, and suppressing the burrs in machining.

The pyramid shaped cutting edge part is formed of a diamond sintered compact or a cBN sintered compact and the ridges of the pyramid shaped part are formed into recessed curves or sloping lines in the longitudinal direction of the edge part. In the edge part of the tool 10 in Figure (a), the four ridges 11 are formed into the recessed curves, while in the edge part of the tool 20 in Figure (b), the four ridges 21 are formed of connecting the sloping lines 21a, 21b and 21c of different angles together into the recessed sloping lines as a whole.

Inventors:

TAKEUCHI TSUTOMU
TOGE NAOKI
HIRASHIMA TEIJI
MATSUKAWA MASANORI

Application Number:

JP2002208502A

Publication Date:

February 19, 2004

Filing Date:

July 17, 2002

Export Citation:

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Assignee:

NORITAKE SUPER ABRASIVE KK
NORITAKE CO LTD

International Classes:

B23B51/10; B23B51/00; B23B51/08; (IPC1-7): B23B51/08

Attorney, Agent or Firm:

Hisashi Kato

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