Title:
CUTTING INSERT FOR SCREW PROCESSING
Document Type and Number:
WIPO Patent Application WO/2011/158946
Kind Code:
A1
Abstract:
Disclosed is a cutting insert which is for low cost screw processing having excellent shape accuracy for the screw being processed. In the disclosed cutting insert for screw processing a plurality of ridge-shaped cutting edges are formed, as seen from a rake face (2) side, in an intersecting ridge section between the rake face (2) formed on an upper surface and a flank face formed on a side surface; the cutting edges are provided with at least one finishing edge (6a) for transferring the shape of a screw, and at least one rough edge (6b) formed as a smaller ridge-shape than the finishing edge (6a), as seen from the rake face (2) side; a first flank surface (5a) and a second flank surface (5b) which has a larger flank angle than the first flank surface (5a) as seen in the normal direction of the cutting edge are formed on a flank face (4a) of the cutting edge (6a), and are arranged in the following order from the finishing edge (6a): first flank surface (5a), second flank surface (5b).
Inventors:
YOSHIBA DAISUKE (JP)
NUNOKAWA EIICHI (JP)
NUNOKAWA EIICHI (JP)
Application Number:
PCT/JP2011/063982
Publication Date:
December 22, 2011
Filing Date:
June 17, 2011
Export Citation:
Assignee:
TUNGALOY CORP (JP)
YOSHIBA DAISUKE (JP)
NUNOKAWA EIICHI (JP)
YOSHIBA DAISUKE (JP)
NUNOKAWA EIICHI (JP)
International Classes:
B23B27/14; B23G5/02
Foreign References:
| JP2007130719A | 2007-05-31 | |||
| JPH01106102U | 1989-07-17 | |||
| JPH09272104A | 1997-10-21 | |||
| US6224299B1 | 2001-05-01 | |||
| JP2007313590A | 2007-12-06 |
Attorney, Agent or Firm:
TANI & ABE, p. c. (JP)
Patent business corporation A valley and Abe patent firm (JP)
Patent business corporation A valley and Abe patent firm (JP)
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Claims: