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公开(公告)号：US11780018B2
公开(公告)日：2023-10-10
申请号：US17134766
申请日：2020-12-28
申请人： UNION TOOL CO.
发明人： Hironobu Saito , Hideki Osaki , Hidehito Watanabe
CPC分类号： B23C5/06 , B23C5/1009 , B23C2200/08 , B23C2226/31 , B23C2228/10
摘要： It is an object of the present invention to provide a rotary cutting tool that can divide chips at an appropriate size, suppress the incidence of edge chipping and damage attributed to chips to the cutting tool and a workpiece, extend the tool service life with regard to the machining of hard, brittle materials, and improve machining efficiency. The rotary cutting tool includes a hard coat film 3 coated onto a tip end section of a tool body 1 having a chip discharge groove 2. A rake face 6 is concavely provided in a cutting edge-side chip discharge groove formation surface 4 constituting the chip discharge groove 2 of the tool body 1, from a cutting edge 5 and along the cutting edge 5.
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公开(公告)号：US09868160B2
公开(公告)日：2018-01-16
申请号：US14507294
申请日：2014-10-06
申请人： UNION TOOL CO.
发明人： Hideki Osaki , Shuntaro Suzuki , Madoka Nitta , Hidehito Watanabe
CPC分类号： B23C5/1009 , B23B2228/105 , B23C2210/126 , B23C2226/31 , B23C2228/04 , B23C2228/10 , Y10T407/24
摘要： The present invention provides a more practical hard-coated cutting tool having improved cutting performance during finishing so as to obtain a better finished surface. Provided is a hard-coated cutting tool including a tool body (7) coated with a hard coating (4) and having a cutting edge (3) formed on a ridge line intersecting a flank face (1) and a rake face (2). In the hard-coated cutting tool, the thickness h1 of the hard coating (4) on the flank face (1) side and the thickness h2 of the hard coating (4) on the rake face (2) side near the cutting edge (3) satisfies conditions 8 μm≦h1≦30 μm and 0≦h2/h1≦0.5 in a cross-section perpendicular to the cutting edge (3) in a range equal to or less than 0.3 times the tool diameter in the axial direction from the tip of the tool.
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