Title:
インサート、ドリル及びそれを用いた切削加工物の製造方法
Document Type and Number:
Japanese Patent JP6467035
Kind Code:
B2
Abstract:
In an embodiment, an insert includes an upper surface including a corner part, a lower surface, a side surface, and a cutting edge. The side surface is between the upper surface and the lower surface. The cutting edge is at least at a part of a first region in which the upper surface intersects with the side surface. The cutting edge includes a first cutting edge at the corner part, a second cutting edge, a third cutting edge, and a fourth cutting edge. The second cutting edge is next to the first cutting edge, and also next to the third cutting edge. The third and fourth cutting edges: each have a convex curvilinear shape with first and second radii of curvature, respectively; and extend downward and upward, respectively, in a side view as going farther from the second cutting edge. The second radius smaller than the first radius.
Inventors:
Hirohisa Ishi
Application Number:
JP2017507628A
Publication Date:
February 06, 2019
Filing Date:
February 26, 2016
Export Citation:
Assignee:
Kyocera Corporation
International Classes:
B23B51/00
Domestic Patent References:
| JP2011121131A | ||||
| JP64056903U | ||||
| JP2001198724A | ||||
| JP2001219315A | ||||
| JP6190624A |