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    • 1. 发明公开
    • 드릴 비트
    • 钻头
    • KR1020050063791A
    • 2005-06-28
    • KR1020057007309
    • 2003-10-31
    • 가부시키 가이샤 미야나가
    • 미야나가,마사아키
    • B23B51/02B23B51/00
    • B23B51/02B23B2222/28B23B2226/75B23B2251/14B23B2251/202B23B2251/46B23B2251/50
    • An edge point portion of a drill bit is improved so as to improve dischargeability of chips from the central portion of a cutting face of a drill hole, and as a result, cutting efficiency is enhanced. Cutting edge portions (3a, 3b, 3c) are circumferentially equally arranged on a cutting edge tip (3) formed from a block body of hardmetal. A ridge line where a cutting face (6) and a flank (7) that are formed on each of the cutting edge portions join is a cutting edge (4), and lines extended from each of the cutting edges (4) join at the center of an edge point. A point portion (9) is provided at an inner end of each of the cutting edges, where the inner end is formed by providing a cut groove (8) at the center portion of the edge point.
    • 提高了钻头的边缘点部分,从而提高了从钻孔的切割面的中心部分的切屑的排放性,结果提高了切削效率。 刀刃部分(3a,3b,3c)周向地均匀地布置在由硬质合金块体形成的切削刃尖端(3)上。 形成在每个切削刃部分上的切割面(6)和侧面(7)的脊线是切削刃(4),从每个切削刃(4)延伸的线连接在 边缘点的中心。 在每个切削刃的内端设置有点部(9),其中通过在边缘点的中心部分设置切割槽(8)而形成内端。
    • 10. 发明公开
    • 드릴링 공구 및 드릴링 가공용 스로어웨이 팁
    • 钻孔工具和钻孔方法
    • KR1020000023406A
    • 2000-04-25
    • KR1019990040999
    • 1999-09-22
    • 미츠비시 마테리알 가부시키가이샤
    • 타카기노부유키
    • B23B51/00
    • B23B51/0493B23B2251/46B23C5/202B23C2200/0416B23C2200/086B23C2200/165B23C2200/203B23C2200/205B23C2200/323Y10S408/713Y10T407/235Y10T407/24Y10T407/245Y10T408/905Y10T408/9097
    • PURPOSE: A drilling tool is provided to improve the treatment of chip around the front end central part of a main body of the tool and to prevent the chip from being blocked even if the core of the drilling tool is elongated in the process of drilling. CONSTITUTION: A main body(1) of a tool is formed in a circumferential shape by centering on a shaft line and a pair of chip discharging grooves are formed in a symmetry against a shaft line for opening an inlet to the front end face of the main body of the tool, twisted toward the rear side of a tool rotary direction on the edge of the shaft line, facing a rear end side. A supplying route of a lubricating coolant is formed to open the inlet by extending a part of a shank(1c) toward a front end side along with a shaft line from a rear end face(1B) inside the main body of the tool. In addition, a place to attach a tip(4) is formed on the front end of a wall face facing the tool rotary direction of the chip discharging groove and a tip(5) is attached on the place.
    • 目的:提供一种钻孔工具,以改善围绕工具主体前端中心部分周围的切屑的处理,并且即使在钻孔过程中钻具的芯体细长,也可防止切屑被堵塞。 构成:工具的主体(1)通过以轴线为中心而形成为周向形状,并且一对排屑槽以与轴线对称的方式形成,用于将入口打开至前端面 工具主体朝向轴线边缘的工具旋转方向的后侧扭转,面向后端侧。 形成润滑冷却剂的供给路径,通过将刀柄(1c)的一部分与来自工具主体内部的后端面(1B)的轴线一起向前端侧延伸而开口。 此外,在面向切屑排出槽的工具旋转方向的壁面的前端上形成有附接尖端(4)的位置,并且在该位置安装尖端(5)。