Title:
DRILLING BIT
Document Type and Number:
Japanese Patent JPH054107
Kind Code:
A
Abstract:
PURPOSE: To improve cutting performance in a boring work for a brittle material such as concrete with a drilling bit.
CONSTITUTION: A shank 1 and a base metal 3 are fixed, and the base metal 3 and a diamond tip 2 are fixed, and a slit 5 having a narrow width is formed on the top edge surface 4 side of the diamond tip 2, and a slit 6 having large width is formed on the base metal 3 side.
Inventors:
SASAKI YASUO
TAKAKUSAKI YUKITOSHI
TAKAKUSAKI YUKITOSHI
Application Number:
JP15333191A
Publication Date:
January 14, 1993
Filing Date:
June 25, 1991
Export Citation:
Assignee:
HITACHI KOKI KK
International Classes:
B23B51/04; B25D17/02; B28D1/14; (IPC1-7): B23B51/04; B25D17/02; B28D1/14
Next Patent: TWIST DRILL HAVING CHAMFERING CUTTER