CUTTING INSERT AND CUTTING TOOL, AND METHOD FOR PRODUCING CUT WORKPIECES USING CUTTING TOOL

Title:

CUTTING INSERT AND CUTTING TOOL, AND METHOD FOR PRODUCING CUT WORKPIECES USING CUTTING TOOL

Document Type and Number:

WIPO Patent Application WO/2014/192798

Kind Code:

A1

Abstract:

A cutting insert (1) of one embodiment is provided with: an insert body having a top surface (2) that has a corner section (21), a first side (22) and a second side (23), a bottom surface (3), and side surfaces (4); cutting blades (6) that are positioned at an intersection between the top surface and the side surfaces, and have a corner cutting blade (61), a first cutting blade (62) and a second cutting blade (63); rake faces (5) that slope downward away from the cutting blade; and a first raised part (71) that is positioned inside the rake faces, and rises upward. The first raised part has a protruding section (71c) that is positioned on a bisecting line of the corner section and protrudes toward the corner cutting blade. The cutting insert is further provided with a second raised part (72) that is positioned on the tip side of the protruding section and extends toward the first cutting blade and the second cutting blade from the protruding section, and has a convex curved shape in which, when viewed from above, the outer peripheral edge on the corner section side forms a protuberance on the corner section side.

Inventors:

SAKAI KOUHEI (JP)

Application Number:

PCT/JP2014/064086

Publication Date:

December 04, 2014

Filing Date:

May 28, 2014

Export Citation:

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Assignee:

KYOCERA CORP (JP)

International Classes:

B23B27/22; B23B27/16

Foreign References:

JP2000254807A	2000-09-19
JPH0586405U	1993-11-22
JPH10118810A	1998-05-12
JP2010532271A	2010-10-07
JPH01101707U	1989-07-10
JP2008073827A	2008-04-03

Other References: