END MILL FOR CUTTING OF HIGH-HARDNESS MATERIALS

Title:

END MILL FOR CUTTING OF HIGH-HARDNESS MATERIALS

Document Type and Number:

WIPO Patent Application WO/2012/111405

Kind Code:

A1

Abstract:

The present invention relates to an end mill having a circular cutting edge of curved shape when viewed in a direction perpendicular to the tool axis, an end cutting edge composed of a medium-to-low pitch cutting edge of linear shape or circular shape, and a peripheral cutting edge. When viewed in a direction parallel to the tool axis, the edges of the circular cutting edge and the flank face of the circular cutting edge at the rearward sides thereof with respect to rotation are curved shapes having curvature radii, and the curvature radius of the circular cutting edge is smaller than the curvature radius of the flank face of the circular cutting edge at the rearward side thereof with respect to rotation.

Inventors:

HAN GANG (JP)
MAEDA KATSUTOSHI (JP)

Application Number:

PCT/JP2012/051758

Publication Date:

August 23, 2012

Filing Date:

January 27, 2012

Export Citation:

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Assignee:

HITACHI TOOL ENG (JP)
HAN GANG (JP)
MAEDA KATSUTOSHI (JP)

International Classes:

B23C5/10

Foreign References:

JP2005034982A	2005-02-10
JP2003326414A	2003-11-18
JP2005096048A	2005-04-14
JP2008264966A	2008-11-06
JP2009056559A	2009-03-19
JP2009532222A	2009-09-10
JP2003326414A	2003-11-18
US7125210B2	2006-10-24
JP2005052924A	2005-03-03

Other References: