Title:
BALL END MILL
Document Type and Number:
WIPO Patent Application WO/2014/069453
Kind Code:
A1
Abstract:
[Problem] To provide a ball end mill configured so that the wear resistance of portions of the tips of the ball edges, the portions being located near the center axis, is improved and so that the tool body does not vibrate during cutting.
[Solution] A ball end mill (10) is provided with: a tool body (1) which rotates about the center axis (O); and ball edges (2) which have a circular arc-shape in a side view and which are provided so as to extend rearward from the center axis (O)-side part of the tip of the tool body (1). The curvature radius (r) of the ball edges (2) is gradually reduced from the center axis (O) side toward the outer periphery (Q) side.
Inventors:
KURODA MASAHIKO (JP)
Application Number:
PCT/JP2013/079257
Publication Date:
May 08, 2014
Filing Date:
October 29, 2013
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
B23C5/10
Foreign References:
| JP2012045705A | 2012-03-08 | |||
| JP2006224254A | 2006-08-31 | |||
| JP2006015419A | 2006-01-19 | |||
| JPS5331286A | 1978-03-24 | |||
| US20060045639A1 | 2006-03-02 | |||
| JP4407975B2 | 2010-02-03 |
Other References:
See also references of EP 2913132A4
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