首页>
外国专利>
Earth-boring drill bits with controlled cutter speed across the bit face, and related methods
Earth-boring drill bits with controlled cutter speed across the bit face, and related methods
展开▼
展开▼
页面导航
摘要
著录项
相似文献
摘要
An earth-boring drill bit includes a bit body including a central shaft having a longitudinal axis, an annular cutter body disposed around, and rotatable relative to, the central shaft, at least one gear assembly operatively coupling the annular cutter body to the central shaft, a first cutter disposed on the central shaft at a first distance from the longitudinal axis, and a second cutter disposed on the annular cutter body at a second, greater distance from the longitudinal axis. Methods of fabricating earth-boring drill bits include rotatably coupling at least one annular cutter body to a central shaft, the at least one annular cutter body and the central shaft being concentric.
展开▼