公开(公告)号：US3854838A

公开(公告)日：1974-12-17

申请号：US31236472

申请日：1972-12-05

Applicant: DOMTAR LTD

Inventor： BARNETT G ,  STANOY M ,  WATSON R

IPC: B23B41/02 ,  B23B51/04

CPC classification number: B23B41/02 ,  B23B51/0486 ,  Y10S408/705 ,  Y10T408/455

Abstract: A method and apparatus for the coring of poles comprising a tubular drill casing having a cutting bit at one end. The drill casing is rotated and the pole and casing are moved axially relative to one another to core the pole. During the coring operation, compressed air is directed into the drill casing to eject chips cut by the drill. The rotation and relative axial movement of the drill casing and pole are correlated to control the size of the chip so that the chips are carried out between the outer periphery of the drill casing and the outer periphery of the cored hole. A special drill bit for the coring operation is also disclosed.

Abstract translation: 一种用于使取心的极的方法和装置，包括在一端具有切割钻头的管状钻壳。 钻壳旋转并且杆和壳体相对于彼此轴向地移动以使杆极化。 在取芯操作期间，压缩空气被引导到钻机壳体中以排出钻头切割的碎屑。 相关联的钻壳和杆的旋转和相对轴向运动来控制芯片的尺寸，使得在钻壳的外周和芯孔的外周之间进行切屑。 还公开了用于取芯操作的专用钻头。