Patent ID: 6244790
Filing Date: 2001-06-12
Classification: B23B,Y10T

Abstract:
Tool for chip removing machining, including a holder and a cutting insert, said holder comprising a body forming at least one cutting insert pocket having an upper side and a lower side, said upper and lower sides both being of one-piece integral construction with said body, said cutting insert comprising an upper surface and a lower surface, the upper surface including a cutting edge, one of the upper side and the upper surface forming a protrusion, and the other of the upper side and the upper surface forming a depression receiving the protrusion, the protrusion and the depression together defining an interface, the depression including a bottom, and the protrusion including a crest facing the bottom, the bottom and the crest extending in a direction oriented transversely relative to the cutting edge, as the insert is viewed in a direction toward the top surface, to prevent movement of the insert relative to the holder in a direction parallel to the cutting edge; the protrusion including contact surfaces converging at a first flank angle toward the bottom of the depression, the first flank angle being greater than zero and less than 180 degrees, the lower side of the pocket and the lower surface of the cutting insert comprising intermeshing projections and recesses; each recess forming a bottom, and each projection forming a crest facing a respective bottom, the bottoms and the crests of the recesses and projections extending in a direction oriented transversely relative to the cutting edge as the insert is viewed in a direction toward the top surface, to prevent movement of the insert relative to the holder in a direction parallel to the cutting edge, each of the projections including contact surfaces converging at a second contact angle toward the floor of a respective recess; each of the second flank angles being greater than zero and less than 180 degrees, the first flank angle being larger than the second flank angle.