Title:
回転切削工具による被加工材表面の加工方法
Document Type and Number:
Japanese Patent JP6457394
Kind Code:
B2
Abstract:
An end mill (10) has a small-diameter body (13) coaxially connected to an end portion of a large-diameter shank (11) via a connection portion (12) . At two circumferentially equally separated positions on an outer circumference of the body (13), the end mill (10) has a pair of cutting edges (14, 15) extending in a rotation axis direction. Each of the cutting edges (14, 15) comprises a plurality of segmental edges (14a, 15a) successively arranged in the rotation axis direction and having the same pitch P (the same length) . An edge of each of the segmental edges (14a, 15a) has a shape of an arc protruding radially with an edge arc radius R. The segmental edges (14a) are shifted by a half pitch in the rotation axis direction with respect to the segmental edges (15a).
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Inventors:
Toshihiro Yajima
Application Number:
JP2015544818A
Publication Date:
January 23, 2019
Filing Date:
October 31, 2014
Export Citation:
Assignee:
Kenbou Co., Ltd.
International Classes:
B44B3/02; B23C3/13; B23C5/10; B23C5/12; B27G13/08; B44C1/22
Domestic Patent References:
| JP1052998A | ||||
| JP3119337U | ||||
| JP11148198A | ||||
| JP2002309500A | ||||
| JP200061923A | ||||
| JP2004129750A | ||||
| JP9208282A | ||||
| JP2007118142A | ||||
| JP2003236809A | ||||
| JP59167203A |
Attorney, Agent or Firm:
Hiroshi Okawa