公开(公告)号：US06719501B2

公开(公告)日：2004-04-13

申请号：US09976272

申请日：2001-10-15

申请人： Toru Sekiguchi ,  Yuu Kagiya ,  Yasushi Goshima

发明人： Toru Sekiguchi ,  Yuu Kagiya ,  Yasushi Goshima

IPC分类号： B23B2714

CPC分类号： C23C30/005 ,  B23C5/10 ,  B23C2210/202 ,  B23C2210/203 ,  B23C2224/36 ,  B23C2226/18 ,  B23C2228/10 ,  Y10T407/1966 ,  Y10T407/27

摘要： A cemented carbide end mill has three or more cutting edges formed on its periphery and flutes each provided between adjacent cutting edges. The land width of each cutting edge and the flute width has a ratio of 1:1.5 to 1:4. Each flute has a helix angle of 35°-60° and, when viewed in a cross section perpendicular to the end mill axis, is in a shape smoothly concave radially inwardly. The core of the end mill has a diameter which is 62%-68% of the outer diameter of the end mill. The cutting edges have a base material of ultra-fine cemented carbide and are coated with a titanium-aluminum nitride hard film. The end mill is good at chip discharging in groove cutting and provides less inclination of cut grooves and less corner wear of the end mill.

摘要翻译： 硬质合金立铣刀具有在其周边上形成的三个或更多个切削刃和各自设置在相邻切削刃之间的槽纹。 每个切削刃的刃宽和槽宽的比例为1:1.5至1:4。 每个槽具有35°-60°的螺旋角，并且当在垂直于端铣刀轴线的横截面中观察时，其形状呈径向向内平滑地凹陷。 立铣刀的芯部的直径为端铣刀的外径的62％-68％。 切削刃具有超细硬质合金的基材，并涂覆有钛 - 氮化铝硬质膜。 端铣刀在槽切削中具有良好的切屑排放，并且提供切割槽的较小倾斜度和较少的端铣刀的角磨损。

公开(公告)号：US20060269372A1

公开(公告)日：2006-11-30

申请号：US11440470

申请日：2006-05-25

申请人： Yasushi Goshima

发明人： Yasushi Goshima

IPC分类号： B23B51/00

CPC分类号： B23B51/02 ,  B23B2251/04 ,  B23B2251/14 ,  B23B2251/18 ,  Y10T408/9097

摘要： A twist drill has a pair of concave-shaped main cutting edges continuous outwardly to respective center cutting edges, and a pair of corner cutting edges receding at an angle from the outer ends of the respective main cutting edges with respect to a drill rotation direction. Respective ends of the concave-shaped main cutting edges are situated on a straight line almost parallel to a plane passing through a drill axis. These cutting edges have a function of minimizing wear and chipping of corner portions and damage to leading edges in a drilling operation using no cutting oil, or a drilling operation wherein a very small amount of cutting oil is sprayed to the drill, or in a drilling operation on relatively hard steel. They also have a function of facilitating breaking of cut chips into pieces during a drilling operation using cutting oil and during a drilling operation on steel of relatively low hardness such as general structural rolled steels and low carbon steels.

摘要翻译： 麻花钻具有一对向相对于中心切割刃向外连续的凹形主切削刃，以及一对相对于钻头旋转方向从相应的主切削刃的外端以一定角度退回的角切削刃。 凹形主切削刃的相应端部位于几乎平行于穿过钻头轴线的平面的直线上。 这些切削刃具有在不使用切削油的钻削操作中使拐角部分的磨损和切屑最小化以及对前缘的损坏的功能，或者将非常少量的切削油喷到钻头上或在钻孔中的钻孔操作 在相对较硬的钢上操作。 它们还具有在使用切削油的钻井操作期间以及在诸如一般结构轧制钢和低碳钢之类的较低硬度的钢的钻井操作期间有助于将切割的切屑切割成碎片的功能。