公开(公告)号：US4808045A

公开(公告)日：1989-02-28

申请号：US266339

申请日：1987-06-23

申请人： Osamu Tsujimura ,  Takayoshi Saito ,  Tatsuo Arai ,  Yasuzo Funaki

发明人： Osamu Tsujimura ,  Takayoshi Saito ,  Tatsuo Arai ,  Yasuzo Funaki

IPC分类号： B23B27/16 ,  B23B51/04 ,  B23C5/10 ,  B23C5/20 ,  B23C5/22 ,  B23B51/00

CPC分类号： B23C5/1045 ,  B23B27/1622 ,  B23B27/164 ,  B23B51/048 ,  B23C5/109 ,  B23C5/202 ,  B23C5/2243 ,  B23B2200/083 ,  B23B2200/085 ,  B23B2200/123 ,  B23B2200/165 ,  B23B2200/202 ,  B23B2200/204 ,  Y10T407/1924 ,  Y10T407/1962 ,  Y10T408/895 ,  Y10T408/896

摘要： An end mill includes a body having a core receiving recess and a cutting insert releasably mounted thereon. An upper surface of the insert has a first cutting edge ridge serving as an outer peripheral cutting edge, a second cutting edge ridge providing an end cutting edge and a third cutting edge ridge providing an inner peripheral cutting edge. The upper surface has a corner where the second and third cutting edge ridge intersecting each other. The upper surface is composed of a central portion and a corner portion including the corner, whereby the third cutting edge ridge comprising a first edge portion defined by a ridge of the corner portion and a second edge portion defined by a ridge of the central portion. At least that portion of the corner portion disposed adjacent the central portion is inclined providing a thickness of the insert is progressively reduced toward the corner. The insert has a negative radial rake at the outer peripheral cutting edge and a positive axial rake. The second edge portion extends radially outwardly of the body and in a direction opposite to the direction of rotation of the body from that point where the first and second edge portions intersect. The distance between the corner and the axis is longer than between the axis and a point at which a line extending radially outwardly of the body from the axis and a line on which a corner ridge lies cross at right angles.

摘要翻译： 端铣刀包括具有芯容纳凹部的主体和可释放地安装在其上的切削刀片。 插入件的上表面具有用作外周切削刃的第一切削刃脊，提供端部切削刃的第二切削刃脊和提供内周切削刃的第三切削刃。 上表面具有第二和第三切割刃彼此相交的角部。 上表面由包括角部的中心部分和角部组成，由此第三切割刃脊包括由角部的脊部限定的第一边缘部分和由中心部分的脊部限定的第二边缘部分。 至少设置在中心部分附近的角部的那部分是倾斜的，使得插入件的厚度逐渐减小到拐角。 插入件在外周切削刃处具有负的径向前刀面，并具有正的轴向前刀。 所述第二边缘部分从所述第一和第二边缘部分相交的点向所述主体的径向向外延伸并且沿与所述主体的旋转方向相反的方向延伸。 角部和轴线之间的距离比在轴线与从轴线径向向外延伸的线与角脊线成直角交叉的线之间的距离长。