Title:
【発明の名称】切削工具
Document Type and Number:
Japanese Patent JPH0683927
Kind Code:
B2
Abstract:
A cutting tool, a drill (10) for instance, having a drill body (11) and a cutting portion (12). The cutting portion (12) comprises a central cutting insert (24) and two peripheral cutting inserts (35, 36). A cutting edge extends along the three inserts. The inserts comprise surfaces for facilitating a tight connection between the parts of the cutting edge. The peripheral inserts (35, 36) consist of a material of greater hardness than the material in the central insert (24), and therefore the cutting edge is adapted for the varying cutting speeds in the radial direction of the tool.
Inventors:
AAGE BARUDEMARU RUUSU
Application Number:
JP13840686A
Publication Date:
October 26, 1994
Filing Date:
June 16, 1986
Export Citation:
Assignee:
SANTRADE LTD
International Classes:
B23B51/00; B23B51/02; (IPC1-7): B23B51/00
Domestic Patent References:
| JP5221489U |
Attorney, Agent or Firm:
Aoki Akira (4 outside)
Next Patent: タービン静翼の冷却制御装置