Invention Grant
US09145739B2 Fixed cutter drill bit for abrasive applications 有权
用于研磨应用的固定式切割钻头

Fixed cutter drill bit for abrasive applications
Abstract:
A cutting tool includes a tool body having a longitudinal axis and a cutting face, a plurality of blades spaced azimuthally about the cutting face and extending at least laterally through a gage region, and a plurality of cutters disposed along the blades. At least two different types of back reaming elements may be disposed on a transitional surface between the gage region of at least one blade and a connection end of the cutting tool. Alternatively, at least one back reaming element may be disposed on a transitional surface between the gage region of at least one blade and a connection end of the cutting tool, and a wear resistant material provided on or in the transitional surface.
Public/Granted literature
Information query
Patent Agency Ranking
0/0