Patent ID: 8449224
Filing Date: 2013-05-28
Classification: B23B,Y10T

Abstract:
1. A cutting tool comprising: a cutting insert comprising an upper surface, a lower surface, a side surface connected to the upper surface and the lower surface, and an upper surface side cutting edge and a lower surface side cutting edge disposed on an intersection portion between the upper surface and the side surface and on an intersection portion between the lower surface and the side surface, respectively; and a holder comprising at a front part thereof an insert pocket to which the cutting insert is attached, wherein the insert pocket comprises a bearing seat surface against which the lower surface of the cutting insert abuts, and is opened into a front surface and a side surface of the holder, respectively, and at least one of a first intersection portion lying at an intersection portion between the bearing seat surface of the insert pocket and the front surface of the holder, and a second intersection portion lying at an intersection portion between the bearing seat surface of the insert pocket and the side surface of the holder, lies more outward than the lower surface side cutting edge of the cutting insert.