STRONG HELICAL BLADE AND STRONG HELICAL TOOTH CUTTING TOOL

摘要

PURPOSE:To substantially improve cutting performance, by manufacturing a blade by the method of extrusion molding after sintering to be formed easily and accurately into a strong helical tooth. CONSTITUTION:A strong helical blade 1, consisting of cemented carbides or cermet, has a helix angle theta of 40-60 deg. in the rotary periphery when the blade is mounted to a body 2. And the blade 1 is manufactured by the method of extrusion molding after sintering, but by this method even a strong helical tooth with a helix angle theta being 40 deg. or more, being enable to be easily and accurately manufactured, can be used for a strong helical tooth cutting tool.