公开(公告)号：US4934881A

公开(公告)日：1990-06-19

申请号：US373513

申请日：1989-06-30

申请人： Osamu Tsujimura ,  Yuzo Koesashi ,  Masayuki Okawa

发明人： Osamu Tsujimura ,  Yuzo Koesashi ,  Masayuki Okawa

IPC分类号： B23C5/10

CPC分类号： B23C5/1018 ,  B23C2210/203 ,  Y10T407/1924 ,  Y10T407/1948 ,  Y10T407/26 ,  Y10T407/27

摘要： A ball end mill including an elongated body, a center insert, and a plurality of cutting inserts. The center insert and the cutting inserts are mounted on the forward end of the body. The center insert and each of the cutting inserts are adjacent to each other in such a manner that the center insert is located with a part thereof at the center. The center insert which is made of cemented carbide has cutting edges passing through the center axis. The cutting inserts are made of a super hard sintered compact. Each of the cutting inserts has a cutting edge aligned to the cutting edge of the center insert. The cutting edges of the cutting inserts and the center insert cooperate to draw a hemispherical path on rotation.

摘要翻译： 一种球头立铣刀，包括细长主体，中心插入件和多个切削刀片。 中心插入件和切削刀片安装在主体的前端。 中心插入件和每个切削刀片彼此相邻，使得中心插入件的一部分位于中心。 由硬质合金制成的中心刀片具有穿过中心轴线的切削刃。 切削刀片由超硬烧结体制成。 每个切削刀片具有与中心刀片的切削刃对准的切削刃。 切削刀片和中心刀片的切削刃配合以在旋转时画出半球形路径。

公开(公告)号：US4859123A

公开(公告)日：1989-08-22

申请号：US107431

申请日：1987-10-13

申请人： Yuzo Koesashi ,  Yasuhiko Kawade ,  Yoshikazu Iwata

发明人： Yuzo Koesashi ,  Yasuhiko Kawade ,  Yoshikazu Iwata

IPC分类号： B23B51/04 ,  B23C5/22

CPC分类号： B23B51/048 ,  B23C5/2213 ,  B23C2200/0411 ,  B23C2200/201 ,  B23C2200/323 ,  B23C2200/326 ,  Y10S408/713 ,  Y10T408/909 ,  Y10T408/9098 ,  Y10T408/90993

摘要： An insert boring tool includes radially outward and inward cutting inserts mounted thereon. The radially outward and inward inserts are arranged such that end cutting edges of the respective inserts are intersected with each other at a point of intersection in loci of rotation of the respective inserts in a plane containing an axis of a tool body. The radially outward and inward inserts are positioned such that, assuming that a radial distance between the point of intersection and a radially outermost end of the end cutting edge of the radially outward insert is A, and a radial distance between the point of intersection and a radially innermost end of the end cutting edge of the radially inward insert is B, a ratio of A/B takes a value of from 2/8 to 45/55.