Title:
ドリルブランク又はエンドミルブランクの製造方法及び製造装置
Document Type and Number:
Japanese Patent JP4723280
Kind Code:
B2
Abstract:
The present invention relates to a method for manufacturing a drill blank or a mill blank by extrusion, said method comprising the forming of a first blank portion (B1) having external, axially extending external flutes and the forming of a further blank portion (B3) in the shape of a shaft. The invention also relates to a device for manufacturing a drill blank or a mill blank. The method according to the invention is characterised by: extruding a first blank portion (B1) having a free end and external flutes; allowing the extrusion to continue to supply further extruding mass into a cavity (6), said supply of extruding mass completely filling out the external flutes of the first blank portion (B1) to produce a second blank portion (B2) integral with the first blank portion (B1); allowing the extrusion to continue to produce a desired length of the first blank portion (B1); and cutting off the first blank portion (B1) at the end facing away from the second blank portion (B2) .
More Like This:
| JP2005177891 | DRILL |
| JPH0740118 | DRILL |
| JPS609609 | DRILLING TOOL |
Inventors:
Yolen Kugelberg
Roine Ericsson
Anders Mikuski
Jonathan Fair
Roine Ericsson
Anders Mikuski
Jonathan Fair
Application Number:
JP2005134249A
Publication Date:
July 13, 2011
Filing Date:
May 02, 2005
Export Citation:
Assignee:
Sandvik Intellectual Property Actie Borag
International Classes:
B23B51/00; B23P15/32; B21C23/01; B21C23/14; B22F3/20; B22F5/10; B23P15/34
Domestic Patent References:
| JP9241706A | ||||
| JP5138448A | ||||
| JP8225809A | ||||
| JP62107908A | ||||
| JP2003311548A | ||||
| JP2003501264A | ||||
| JP3025251U |
Foreign References:
| DE3636798A |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Hirose Shigeki
Masaya Nishiyama
Jun Tsuruta
Tetsuro Shimada
Hirose Shigeki
Masaya Nishiyama