Title:
CUTTING INSERT AND MACHINING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/203557
Kind Code:
A1
Abstract:
A cutting insert (1) has a polygonal plate shape and is used for lathe-turning machining. The cutting insert (1) has a rake surface (7) provided on at least one of a pair of polygonal surfaces (10), a cutting blade (5) provided on the outer edge of the polygonal surface (10) provided with the rake surface (7), and a flank surface (8) extending along the plate thickness direction from the cutting blade (5). The cutting blade (5) includes a corner blade (5a) located at a corner part of the polygonal surface (10). The flank surface (8) has a curved part (8a) extending along the plate thickness direction from the corner blade (5a). The curved part (8a) is provided with a slide contact region (2) that performs burnishing by being pressed against a cut surface (Wa) of a workpiece (W). The radius of curvature (r, R) of the slide contact region (2) is larger than the radius of curvature (r, R) of the corner blade (5a).
Inventors:
TAKAHASHI WATARU (JP)
SASAHARA HIROYUKI (JP)
KOJIMA SHOTA (JP)
SASAHARA HIROYUKI (JP)
KOJIMA SHOTA (JP)
Application Number:
PCT/JP2020/013348
Publication Date:
October 08, 2020
Filing Date:
March 25, 2020
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
NATIONAL UNIV CORPORATION TOKYO UNIV OF AGRICULTURE AND TECHNOLOGY (JP)
NATIONAL UNIV CORPORATION TOKYO UNIV OF AGRICULTURE AND TECHNOLOGY (JP)
International Classes:
B23B27/14; B23B1/00
Foreign References:
| JP2013202733A | 2013-10-07 | |||
| JP2001030101A | 2001-02-06 | |||
| JPS6321501U | 1988-02-12 |
Other References:
IWAI, MANABU ET AL.: "Burnishing property utilizing tool flank face", PROCEEDINGS OF JSPE SEMESTRIAL MEETING 2015 JSPE SPRING CONFERENCE, 1 March 2015 (2015-03-01), pages 417, 418
YAKUSHIJI, TERUTOSHI ET AL.: "Cutting and rubbing process for a Ti-6Al-4V alloys, and its effects", TRANSACTIONS OF THE JSME, vol. 80, no. 818, 2014
YAKUSHIJI, TERUTOSHI ET AL.: "Cutting and rubbing process for a Ti-6Al-4V alloys, and its effects", TRANSACTIONS OF THE JSME, vol. 80, no. 818, 2014
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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