Drill bit with inscriber

作者： Norman H. Schmotzer

DOI:

关键词: Spiral 、 Bit (horse) 、 Remainder 、 Mechanical engineering 、 Structural engineering 、 Drill bit 、 Circumference 、 Engineering

摘要: A self feeding drill bit for making a smooth bore in workpiece has spiral land and flute with leading end carrying centered lead screw. The of the cutter extending from said screw to circumference bit. Diametrically opposed is an inscriber formed as curved blade by periphery land. In use, makes surfaced cut removing remainder within scribed cut.