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Patent Searching and Data


Title:
ROTARY TOOL AND METHOD FOR MANUFACTURING CUT PRODUCT USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/092729
Kind Code:
A1
Abstract:
A rotary tool based on an embodiment has a main body, and the main body is provided with a cutting edge and a first flute. The first flute has a first region having a first helix angle, a second region having a second helix angle, a third region having a third helix angle, a fourth region having a fourth helix angle, and a fifth region having a fifth helix angle. The values of the fourth helix angle and the fifth helix angle respectively decrease from a first-end side toward a second-end side. The decreasing rate of the value of the fourth helix angle of the fourth region is smaller than the decreasing rate of the value of the fifth helix angle of the fifth region. The length of the fourth region is longer than the length of the fifth region.

Inventors:
HATANO HIROKAZU (JP)
NAMBA MUTSUMASA (JP)
Application Number:
PCT/JP2017/040793
Publication Date:
May 24, 2018
Filing Date:
November 13, 2017
Export Citation:
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Assignee:
KYOCERA CORP (JP)
International Classes:
B23B51/00
Foreign References:
JP2015226978A2015-12-17
JP3109645U2005-05-19
US4579180A1986-04-01
JPH01122712U1989-08-21
JPH09277108A1997-10-28
JP2009018383A2009-01-29
JP3206023U2016-08-25
JPH07164227A1995-06-27
JP2010234461A2010-10-21
FR1302191A1962-08-24
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