Patent ID: 6715968
Filing Date: 2004-04-06
Classification: B23B,Y10T

Abstract:
A double-ended metal cutting insert comprising a body including an upper surface, a bottom surface, two mutually parallel side surfaces each extending between the upper and bottom surfaces, first and second end surfaces disposed at respective axial ends of the body, and a groove formed in the bottom surface, the groove including a base portion, two bottom support surfaces, disposed on opposite sides of the groove, and two intermediate support surfaces disposed on opposite sides of the groove and each situated between the base portion and a respective one of the bottom support surfaces, the support surfaces diverging in a downward direction and together defining an obtuse angle, the intermediate support surfaces diverging in downward direction and together defining an acute angle, an intersection between the upper surface and the first and second end surfaces forming first and second cutting edges, respectively, each of the first and second end surfaces including an upper portion connected to a respective one of the first and second cutting edges, and a lower portion connected to the upper portion by a smoothly concavely curved transition portion wherein the lower portion is recessed axially inwards relative to the upper portion, the lower portion oriented perpendicular to a longitudinal axis of the body.