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    tool
    6.
    发明专利
    tool 有权

    公开(公告)号：JP5289617B1

    公开(公告)日：2013-09-11

    申请号：JP2012504944

    申请日：2011-10-06

    Applicant: オーエスジー株式会社

    Inventor： 英明 今泉 ,  哲也 足立

    IPC: B23C5/10

    CPC classification number: B23C5/10 ,  B23C2210/088 ,  Y10T407/1946 ,  Y10T407/1948 ,  Y10T407/1966

    Abstract: A tool that is capable of reducing the maximum value of a cutting resistance when adjacent peripheral cutting edges are simultaneously cutting a workpiece is provided. The lead (L) of a helical flute (21), the pitch (P) of a waveform, the number (N) of peripheral cutting edges (22), and a natural number (m), are set so as to satisfy, L/N = m × P - P/N ± P/2 or L/N = m × P + P/N ± P/2. Therefore, when adjacent peripheral cutting edges (22) are simultaneously cutting a workpiece, adjacent waveforms that simultaneously come into contact with the workpiece are capable of forming an anti-phase relationship. Consequently, the lengths of the cutting edges that simultaneously come into contact with the workpiece are reduced, enabling the maximum value of a cutting resistance to be reduced.

    Ball end mill
    10.
    发明专利
    Ball end mill 有权
    球头铣刀

    公开(公告)号：JP2011056649A

    公开(公告)日：2011-03-24

    申请号：JP2009212128

    申请日：2009-09-14

    Applicant: Mitsubishi Materials Corp ,  三菱マテリアル株式会社

    Inventor： AZEGAMI TAKAYUKI

    IPC: B23C5/10

    CPC classification number: B23C5/1009 ,  B23C2210/0485 ,  B23C2210/282 ,  Y10T407/1946 ,  Y10T407/1948 ,  Y10T407/1958

    Abstract: PROBLEM TO BE SOLVED: To smoothly discharge cutting chips generated by a long bottom blade extending near the axial line of an end mill body tip without jamming of the chips. SOLUTION: In this ball end mill, a plurality of bottom blades 7 having a semi-spherical rotary trajectory around an axial line O are formed at a tip of an end mill body 1 rotating around the axial line O, and a plurality of outer peripheral blades 7 communicated to an outer end of the bottom blade 5 are formed on an outer periphery of the end mill body 1. Some of the bottom blades 7A are long bottom blades 7A extending near the axial line O at the tip of the end mill body 1. A narrow angle θ formed by two straight lines C, D connecting the axial line O to two outer peripheral blades 5A, 5B communicated to the long bottom blades 7A and bottom blades 7B positioned in an end mill rotary direction T on a cross section orthogonal to the axial line O is made larger than a narrow angle θ formed by a tangent A at an inner end 7a of the long bottom blade 7A seen from the tip in the direction of the axial line O and a tangent B at an inner end 7b of the bottom blade 7B positioned in the end mill rotary direction T of the long bottom blade 7A. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：平稳地排出由端铣刀主体端部的轴线附近延伸的长底刀片产生的切屑，而不会妨碍切屑。 解决方案：在该球头立铣刀中，围绕轴线O具有半球形旋转轨迹的多个底刀片7形成在端轴铣刀主体1的围绕轴线O旋转的末端，并且多个 在端铣刀体1的外周形成有与外刀片7连通的外周刀片7的一部分，其中，底刀片7A的一部分是长轴端部7A， 端铣刀体1.由两条直线C，D形成的窄角θ，该两条直线C，D将轴线O连接到两个外周刀片5A，5B，两个外周刀片5A，5B与位于端铣刀旋转方向T上的长底刀片7A和底刀7B相通 使得与轴线O正交的横截面大于从尖端在轴线O方向看到的长底刀片7A的内端7a处的切线A形成的窄角θ，并且切线B在 底部刀片7B的内端7b位于末端 长底刀片7A的轧机旋转方向T. 版权所有（C）2011，JPO＆INPIT

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