END MILL AND MANUFACTURING METHOD THEREOF

WIPO Patent Application WO/2020/084959

A1

An end mill which has excellent strength and durability, and which, while having a small diameter, comprises multiple cutting blades well attached to the main body, and a simple manufacturing method thereof are provided. This end mill comprises: a main body in which multiple embedding areas are provided and which rotates around a rotation axis; and multiple cutting blades which are embedded and fixed in the multiple embedding areas and which are configured as the outermost diameter. In this end mill, the cutting blades include a sintered diamond, the twist angle of the cutting blades is 0°, and the outer diameter is less than 10 mm. The cutting blades are embedded and fixed in the embedding areas such that the extension lines of the cutting blades do not pass through the rotation axis. This end mill manufacturing method involves embedding the cutting blades in the embedding areas of the main body, and fixing the cutting blades in the embedding areas by vacuum brazing or high-frequency brazing in a state in which the cutting blades have been embedded in the embedding area.

WO/2022/135879	COMBINED DRILL AND MILLING CUTTER
JPH065817	[Name of device] End mill
JPH08323527	THROW AWAY END MILL

NAKAICHI MAKOTO (JP)
NAKAI KOTA (JP)
FUJII MAKOTO (JP)

PCT/JP2019/036355

April 30, 2020

September 17, 2019

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NITTO DENKO CORP (JP)
KAMIYA SAW & KNIFE MFG CO LTD (JP)

B23C5/10; B23B27/20; B23C5/16; B23P15/34

JPH0623615A	1994-02-01
JPS60127912A	1985-07-08
JP2001347504A	2001-12-18
JP2001030107A	2001-02-06
JPH0516037U	1993-03-02
JPS57502051A	1982-11-18
JPS59107202U	1984-07-19
US20160001381A1	2016-01-07
GB2404890A	2005-02-16

MOMII Takafumi (JP)

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