ROTATING TOOL AND METHOD FOR MANUFACTURING CUT WORKPIECES

WIPO Patent Application WO/2021/005946

A1

A rotating tool based on a non-restricted aspect of the present disclosure has a body. The body extends, from a first end to a second end, along a central axis. The body has a first section and a second section. The first section is positioned so as to include the first end. The second section is positioned closer to the second end than the first section, and has a greater outside diameter than the first section. The first section has a first blade and a first groove. The second section has a second blade and a second groove. In a first cross-section of the first section orthogonal to the central axis, the first groove has an arcuate first bottom section, and the center of a first virtual circle overlapping the first bottom section is positioned further toward the outside than a circumscribed circle around the first section. In a second cross-section of the second section orthogonal to the central axis, the second groove has an arcuate second bottom section, and the center of a second virtual circle overlapping the second bottom section is positioned further toward the inside than a circumscribed circle around the second section.

TAKATAKE YUSAKU (JP)
YOSHIDA MASAHIRO (JP)

PCT/JP2020/022964

January 14, 2021

June 11, 2020

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KYOCERA CORP (JP)

B23B51/00; B23D77/00

WO2015118684A1	2015-08-13
WO2009054400A1	2009-04-30
WO2018011314A1	2018-01-18

JPH09501109A	1997-02-04
JP2002079408A	2002-03-19
JP2017177320A	2017-10-05
JP2003334709A	2003-11-25
JPS62188616A	1987-08-18
JPH07164225A	1995-06-27

BUNA PATENT ATTORNEYS (JP)

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