CUTTING INSERT AND A MILLING TOOL CAPABLE OF EFFICIENTLY USING ALL CUTTING BLADES IN COMPLEX MILLING OPERATION

摘要

PURPOSE: A cutting insert and a milling tool are provided to be used for rotating a cutter body in a same direction regardless of that an upper blade and a lower blade are in an activation cutting position.;CONSTITUTION: A cutting insert(10) comprises an upper surface(21), a lower surface, an upper cutting blade(23), a lower cutting blade(25), and a blade side surface. The cutting insert enables index in different index positions. Each length of the upper cutting blades is same as each length of the lower cutting blades. The each upper cutting blade includes a displacement angle which is under a predetermined angle and excess 0 and displaces in an angle phase on a center axis line on one of the lower cutting blades.;COPYRIGHT KIPO 2013