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1. 发明授权

US4944640A Vertical feed type burnishing drill 失效
标题翻译：立式进料抛光钻
公开(公告)号：US4944640A
公开(公告)日：1990-07-31
申请号：US404354
申请日：1989-09-07
申请人： Yasuhiro Suzuki , Tuguo Yoshikawa , Kazuhiro Shibata , Akio Fukui , Kiyotaka Shiga
发明人： Yasuhiro Suzuki , Tuguo Yoshikawa , Kazuhiro Shibata , Akio Fukui , Kiyotaka Shiga
IPC分类号： B23B51/08 , B23B51/00
CPC分类号： B23B51/00 , B23B2251/14 , Y10T408/899 , Y10T408/906 , Y10T408/9095
摘要： A burnishing drill having a drill body, the forward end of which is formed with a reduced-diameter portion having its external diameter smaller than the maximum external diameter of the drill body. The forward end of the drill body includes a pair of first cutting edges formed in the reduced-diameter to include with a first cutting angle, and a pair of second cutting edges formed to extend radially in a direction perpendicular to the first cutting edges at least from the inward position of a plane including the outermost peripheral walls of the first cutting edges to the position of another plane including the outermost peripheral wall of the drill body.Each of the first cutting edges extends radially outward from the center of the forward end of the dril body and includes axially in the rearward direction while each of the second cutting edges inclines extends radially outward from the drill body and inclines axially in the forward direction.
摘要翻译：一种抛光钻具，其具有钻体，其前端形成有其外径小于钻体的最大外径的直径小的部分。钻体的前端包括一对以缩径形成的第一切削刃，其包括第一切割角度，以及一对第二切削刃，其形成为沿与第一切削刃垂直的方向径向延伸至少从包括第一切削刃的最外周壁的平面的向内位置到包括钻体的最外周壁的另一平面的位置。每个第一切削刃从钻头体的前端的中心径向向外延伸并且包括沿向后方向的轴向，而每个第二切削刃倾斜从钻头体径向向外延伸并沿向前的方向轴向倾斜。

2. 发明授权

US5071294A Burnishing drill 失效
标题翻译：焚烧钻
公开(公告)号：US5071294A
公开(公告)日：1991-12-10
申请号：US562446
申请日：1990-08-01
申请人： Yasuhiro Suzuki , Tuguo Yoshikawa , Kazuhiro Shibata , Akio Fukui , Kiyotaka Shiga
发明人： Yasuhiro Suzuki , Tuguo Yoshikawa , Kazuhiro Shibata , Akio Fukui , Kiyotaka Shiga
IPC分类号： B23B51/08 , B23B51/00 , B23D77/14
CPC分类号： B23B51/00 , B23B2251/14 , Y10T408/81 , Y10T408/906 , Y10T408/909
摘要： A burnishing drill includes a cylindrical drill body connected at its forward end integrally with a shank. The forward end of the drill body includes a first pair of cutting edges inclined radially and rearwardly from the forwardmost central end of the drill body toward the shank at a first cutting angle. A second pair of cutting edges formed of diamond chips are disposed in a plane intersecting the plane in which the first pair of cutting edges are located. The second pair of cutting edges are inclined radially and rearwardly from a position inside a circle including the maximum external margins of the first pair of cutting edges toward the shank at a second cutting angle.
摘要翻译：抛光钻具包括一圆柱形钻体，其整体连接在其前端与柄。钻体的前端包括第一对切削刃，该第一对切削刃以钻头主体的最前端的中心端部以第一切割角朝向柄部径向向后倾斜。由金刚石碎片形成的第二对切削刃设置在与第一对切削刃所在的平面交叉的平面内。所述第二对切削刃从包括所述第一对切削刃的最大外部边缘的圆内的位置以第二切割角朝向所述柄向内径向向后倾斜。

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