END MILL

WIPO Patent Application WO/2022/113360

A1

This end mill comprises three types of cutting edge, a curved tooth BS, a left hand helical tooth BL, and a right hand helical tooth BR, as three peripheral cutting edges, adjacent peripheral cutting edges being constituted from different types of cutting edge. Therefore, the spacing between adjacent peripheral cutting edges is irregular and continuously changes in the axial direction, and the direction of cutting force varies. Consequently, resonance is suppressed, and an anti-vibration effect is adequately attained. Moreover, providing the curved tooth BS results in the more adequate suppression of the occurrence of burrs in comparison to when only the right hand helical tooth BR and the left hand helical tooth BL are present, and chatter vibration in the plate thickness direction of a workpiece is reduced as the cutting force acts inward on a curved shape. Furthermore, since the curved tooth BS has a smooth curved shape, the accumulation of chips is reduced, and restrictions on processing conditions are relaxed in comparison to a herringbone shape.

JP2001524394	[Title of the Invention] Milling cutter and insertion tool
JP2000317713	CUTTING PART CHANGING TYPE CUTTING TOOL
JP2020116707	BLADE EDGE REPLACEABLE END MILL

UKEI SHIGETOSHI (JP)
ISOBE MASATAKA (JP)

PCT/JP2020/044553

June 02, 2022

November 30, 2020

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OSG CORP (JP)

B23C5/10

WO2019049252A1	2019-03-14
WO2009122937A1	2009-10-08
WO2009122937A1	2009-10-08

JPS54119198A	1979-09-14
JPS61142009A	1986-06-28
JP2015000467A	2015-01-05
JP2013022657A	2013-02-04
JPS6347007A	1988-02-27
JP2013022657A	2013-02-04

IKEDA Haruyuki et al. (JP)

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