首页>
外国专利>
ROTARY DRILL BIT WITH CUTTING INSERT FOR ENGAGING EARTH STRATA
ROTARY DRILL BIT WITH CUTTING INSERT FOR ENGAGING EARTH STRATA
展开▼
机译:旋挖钻头,带切割嵌片接合地层
展开▼
页面导航
摘要
著录项
相似文献
摘要
#$%^&*AU2014201702B220170706.pdf#####ABSTRACT OF THE DISCLOSURE A rotary drill bit for engaging an earth strata material includes a cutting insert attached to an axial forward end of an elongate drill bit body. The cutting insert includes an elongate insert body rotatable about a central axis with a pair of symmetrical halves symmetrical about the central axis, each symmetrical half comprising: a leading face; a top surface having a primary relief surface; a web thinning gash extending between the leading face and the primary relief surface, the web thinning gash having a debris evacuation portion centrally disposed adjacent the central axis and a distal transition portion disposed adjacent the debris evacuation portion; a first leading cutting edge at the intersection of the leading face and the primary relief surface; and a second leading cutting edge at the intersection of the web thinning gash and the primary relief surface of the top surface.1/7 IA 150 50 2 3 4 54 44 A 1 1810 2012 FIG. 1 A16 | A
展开▼
机译:#$%^&* AU2014201702B220170706.pdf #####披露摘要用于接合地层材料的旋转钻头,包括切削刀片固定在细长的钻头主体的轴向前端上。切削刀片包括细长的插入体,可绕中心轴旋转,一对对称的半对称围绕中心轴线,每个对称的半部包括:前表面;顶面有一个主要浮雕面;在前表面和主表面之间延伸的薄网释放表面,幅材稀疏气体具有在中心设置的碎屑排出部分靠近中心轴和远端过渡部分,靠近碎屑排空一部分;前端面和主要凸纹相交处的第一个前端切削刃表面;第二个前切削刃位于纤维网稀疏气与顶表面的主要浮雕表面。1/7IA1505023 4 5444 A 118102012图。 1个A16|一种
展开▼