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    • 1. 发明授权
    • Drill and lock screw employed for fastening the same
    • 用于固定螺丝的钻孔和锁定螺丝
    • US5338135A
    • 1994-08-16
    • US865966
    • 1992-04-09
    • Kazuo NoguchiYoshikatsu MoriNagatoshi KunimoriHideo Mori
    • Kazuo NoguchiYoshikatsu MoriNagatoshi KunimoriHideo Mori
    • B23B51/02
    • B23B51/02B23B2251/48B23B2251/50Y10S408/713Y10T408/892Y10T408/905Y10T408/909Y10T408/90993
    • A drill has a pair of cutting edges (4) which are arranged at positions that are substantially uniformly circumferentially spaced about its rotation axis. Each of the cutting edges (4) has a first linear cutting region (4a) and a second linear cutting region (4b) which are aligned with each other on the same straight line, and a curved cutting region (4c) which is located between the first and second linear cutting regions (4a, 4b). The curved cutting region (4c) has a third linear cutting region (4e, 4f) which extends in a direction intersecting with the second linear cutting region (4b) at a prescribed angle. With this structure, it is possible to prevent chip loading etc. which may be caused during perforation drilling operations. In a throw-away tipped drill, a notch (118a) is formed in a received portion of an insert (110) which is mounted on a shank (130). A holding portion (131a, 131b, 133a, 133b) of the shank (130) corresponding to the notch (118a) is provided with a through screw hole (138). A male screw (139) is inserted in the through screw hole (138), and a spherical pressing member (140) is interposed between the forward end of the male screw (139) and the surface of the notch (118a) of the insert (110). With this structure, it is possible to prevent separation of the insert (110) from the shank (130).
    • 钻头具有一对切削刃(4),它们被布置在基本上围绕其旋转轴线周向间隔开的位置处。 每个切削刃(4)具有在相同直线上彼此对准的第一线性切割区域(4a)和第二线性切割区域(4b),以及位于 第一和第二线性切割区域(4a,4b)。 弯曲切割区域(4c)具有在与第二线性切割区域(4b)交叉的方向上以规定角度延伸的第三线性切割区域(4e,4f)。 利用这种结构,可以防止在穿孔钻孔操作期间可能引起的切屑加载等。 在扔掉的钻头中,凹口(118a)形成在安装在柄(130)上的插入件(110)的接收部分中。 与凹口(118a)相对应的柄部(130)的保持部(131a,131b,133a,133b)设有通孔(138)。 外螺纹(139)插入通孔(138)中,并且在外螺纹(139)的前端和插入件的凹口(118a)的表面之间插入有球形按压构件(140) (110)。 利用这种结构,可以防止刀片(110)与柄(130)分离。
    • 4. 发明授权
    • Throw away inserts
    • 丢掉刀片
    • US4214845A
    • 1980-07-29
    • US931442
    • 1978-08-07
    • Yoshikatsu Mori
    • Yoshikatsu Mori
    • B23B27/14B23B27/22B26D1/00
    • B23B27/141Y10T407/235
    • A polygonal throw away insert includes an insert body having two opposite, parallel major surfaces and a plurality of sides. A cutting edge is formed along a line where each of the sides joins each of the surfaces. A ramp extends from each cutting edge downwardly towards the center of at least one of the two major surfaces of the insert body. A pair of first chip breaking projections are provided on the ramp adjacent each corner of the insert body in a symmetrical relationship with respect to the bisector of the corner, and a second chip breaking projection is provided on the bisector behind the first projections.
    • 多边形丢弃刀片包括具有两个相对的平行主表面和多个侧面的插入本体。 沿着每个侧面连接每个表面的线形成切割边缘。 斜坡从每个切割刃向下延伸到插入体的两个主表面中的至少一个的中心。 一对第一切屑突起以相对于角的平分线对称的方式设置在与插入体的每个角部相邻的斜面上,并且在第一突起之后的平分线上设置第二切屑突起。