Rotary percussion drill bit

作者： Edmund Isakov

DOI:

关键词: Rock cutting 、 Edge (geometry) 、 Head (vessel) 、 Geometry 、 Structural engineering 、 Drill bit 、 Percussion 、 Bit (horse) 、 Insert (composites) 、 Geology 、 Plane (Unicode)

摘要: A rotary percussion rock drill bit has a body and symmetrical cross-like arrangement of crushing cutting inserts secured on the body. The rearward shank portion forward boring head with front face. cylindrical are in have noncutting hemispherical ends exposed at face portion. inserts, which can be rectangular or shape, roof-shaped peak each end defines edge. arranged their respective pattern. also longitudinal central axis, aligned along planes disposed orthogonal relation to one another intersecting axis. At least insert is opposite side axis planes, whereas other planes. edge extends generally parallel offset from plane aligned.