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    • 4. 发明申请
    • HARD METAL INSERT FOR A DRILL BIT FOR PERCUSSION DRILLING AND METHOD FOR GRINDING A HARD METAL INSERT
    • 用于钻孔钻头的硬金属插件和用于研磨硬金属插件的方法
    • WO2011043717A1
    • 2011-04-14
    • PCT/SE2010/051053
    • 2010-10-01
    • ATLAS COPCO SECOROC ABSTENBERG, GöranWESSBERG, Johan
    • STENBERG, GöranWESSBERG, Johan
    • E21B10/56E21B10/46
    • E21B10/46E21B10/36E21B10/56
    • The present invention comprises a hard metal insert (1 ) intended to be comprised within a drill bit for percussion drilling, which insert comprises a cap (2), which constitutes a wear part comprising a wear surface (2a) and a cylindrical part (3), which constitutes a mount with a cross-sectional area (A) and a diameter (D) The cap (2) comprises a front part (4) with an extension (H) along the axis of symmetry (x) of the insert from a first point (a) on the wear surface (2a) of the cap to a second point (b) in the cap. The front part (4) constitutes a volume (Vf) between a first plane (I), which intersects at right angle to the axis of symmetry (x) at the first point (a), and a second plane (II), which intersects at right angle to the axis of symmetry (x) at the second point (b). The volume (Vf) is greater than or equal to 0.6 times the cross-sectional area (Af) of the front part in the second plane times the distance (H) along the axis of symmetry (x) between the first point (a) and the second point (b), and the diameter (Df) of the front part in the second plane is greater than or equal to 0.5 times the diameter (D) of the mount and less than or equal to 0.6 times the diameter (D) of the mount. The invention also relates to a method for regrinding a worn insert.
    • 本发明包括一个旨在包括在用于冲击钻孔的钻头内的硬金属插入件(1),该插入件包括盖(2),其构成包括磨损表面(2a)和圆柱形部分(3)的磨损部件 ),其构成具有横截面积(A)和直径(D)的安装座。盖(2)包括具有沿插入件的对称轴(x)的延伸部(H)的前部(4) 从盖子的磨损表面(2a)上的第一点(a)到帽中的第二点(b)。 前部(4)构成在与第一点(a)处的与对称轴(x)成直角相交的第一平面(I)和第二平面(II)之间的体积(Vf),其中 在第二点(b)处与对称轴(x)成直角相交。 体积(Vf)大于或等于第二平面中的前部的横截面积(Af)的0.6倍乘以沿着第一点(a)之间的对称轴(x)的距离(H) 和第二点(b),第二平面中的前部的直径(Df)大于或等于安装座的直径(D)的0.5倍,并且小于或等于直径的D(D) )的安装。 本发明还涉及一种磨损磨损的刀片的方法。
    • 5. 发明申请
    • NECK ADAPTER WITH SIDE- FLUSHING HOLE
    • NECK适配器与侧面冲洗孔
    • WO2008133584A1
    • 2008-11-06
    • PCT/SE2008/050431
    • 2008-04-16
    • ATLAS COPCO SECOROC ABÖSTLING, ThomasWESSBERG, Johan
    • ÖSTLING, ThomasWESSBERG, Johan
    • E21B17/00B25D17/22E21B21/00
    • E21B21/00E21B17/03
    • The invention pertains to a neck adaptor at a drilling device for rock drilling. The neck adaptor is cylindrical and comprises an envelope surface, a front end surface, a central axial passage which orifices at the front end surface, and a radial side-flushing hole which extends from the central axial passage and orifices in the envelope surface. The side-flushing hole has an oblong cross-section which extends along a mid axis from a front end of the cross-section of the side-flushing hole to a rear end of the cross-section of the side-flushing hole. The mid axis is substantially parallel with the central axial passage. The front end faces the front end surface of the neck adaptor. The cross- section of the side-flushing hole is wing profile shaped. The cross-section is divided up into two cross-section parts perpendicular against the mid axis, so that each of the two cross-section parts has substantially the same length of the mid axis. The two cross- section parts comprise a front cross-section part comprising the front end of the cross- section of the side-flushing hole, which front cross-section part has a front cross-section area, and a rear cross-section part comprising the rear end of the cross-section of the side-flushing hole, which rear cross-section part has a rear cross-section area. The front cross-section area is formed to be smaller than the rear cross-section area.
    • 本发明涉及一种用于岩石钻探的钻井装置的颈部适配器。 颈部适配器是圆柱形的,并且包括封套表面,前端表面,在前端表面处的孔的中心轴向通道,以及从中心轴向通道和包络表面中的孔延伸的径向侧面冲洗孔。 侧面冲洗孔具有从侧面冲洗孔的横截面的前端到侧面冲洗孔的截面的后端的中轴线延伸的长方形的横截面。 中轴基本上平行于中心轴向通道。 前端面向颈部适配器的前端表面。 侧面冲洗孔的横截面为翼型。 横截面被分成垂直于中轴的两个横截面部分,使得两个横截面部分中的每一个具有与中轴线基本相同的长度。 两个横截面部分包括前横截面部分,该前横截面部分包括侧面冲洗孔的横截面的前端,该前横截面部分具有前横截面积,以及后横截面部分 包括侧面冲洗孔的横截面的后端,后侧横截面部分具有后横截面积。 前横截面积形成为比后横截面积小。