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    Core drill
    1.
    发明公开
    Core drill 有权
    Hohlbohrwerkzeug

    公开(公告)号：EP1236553A1

    公开(公告)日：2002-09-04

    申请号：EP01401641.4

    申请日：2001-06-21

    申请人： EHWA DIAMOND IND. CO., LTD.

    发明人： Hong, Jae Hyun ,  Lee, Chang Hyun ,  Kim, See Hyung

    IPC分类号： B28D1/04

    CPC分类号： B28D1/041 ,  Y10T408/81

    摘要： The present invention relates to a core drill (10) wherein initial drilling workability is improved through reduced frictional resistance on the segment tips (30), when they are seated on the surface of an article to start cutting operation, and wherein cutting scraps or sludge produced by the segment tips (30) are smoothly discharged through the helical grooves (20b) formed on the core body (20) so as to reduce the friction between the core body (20) and the cutting scraps or sludge, whereby both the cooling and cutting performance of the core drill are improved. The invention proposes a core drill (10) with a cylindrical core body (20) with a predetermined diameter and length and with plural cutting segments (30) provided on the lower part of a core body (20) at a finite interval, wherein the cutting thickness surface of the cutting segment consists of inclined sharp thickness portion (30a) for decreased frictional resistance with an article to be processed.

    摘要翻译： 芯钻技术领域本发明涉及一种核心钻头，其中，当初始钻孔加工性能被降低时，通过降低分段末端的摩擦阻力，当它们被放置在制品的表面上以开始切割操作时，并且其中切割由分段末端产生的碎屑或污泥 通过形成在芯体上的螺旋槽顺利地排出，以减少芯体与切屑或污泥之间的摩擦，从而提高了芯钻的冷却和切割性能。 本发明提出了一种具有预定直径和长度的圆柱形芯体的芯钻，并且具有以有限间隔设置在芯体下部的多个切割段，其中切割段的切割厚度表面由倾斜的尖锐厚度 与待处理物品摩擦阻力降低的部分。