1. A cutting tool, comprising: a toolholder having a recess; and an insert adapted to be received in the recess, wherein the recess has a top surface with a curved portion, a bottom surface with a curved portion, and a fixed stop surface, and the insert has a top surface with a curved portion, a bottom surface with a curved portion, at least part of the bottom surface at least partially defining a clearance surface, and a stop surface, the curved portion of the top surface of the insert and the curved portion of the bottom surface of the insert being curved such that they abut against the curved portion of the top surface of the recess and the curved portion of the bottom surface of the recess, respectively, when the stop surface of the insert abuts against the fixed stop surface of the recess, and wherein the curved portion of the top surface of the insert and the curved portion of the bottom surface of the insert define segments of substantially concentric circles having radii that differ by an amount substantially equal to a distance along a side surface between the top surface and the bottom surface of the insert.
2. The cutting tool as set forth in claim 1, wherein the curved portion of the top surface of the insert has substantially the same radius of curvature as the corresponding curved portion of the top surface of the recess.
3. The cutting tool as set forth in claim 1, wherein the curved portion of the top surface of the insert and the curved portion of the bottom surface of the insert have substantially the same radius of curvature as the curved portion of the top surface of the recess and the curved portion of the bottom surface of the recess, respectively.
4. The cutting tool as set forth in claim 1, wherein, when the insert is disposed in the recess, the curved portion of the top surface of the insert and the curved portion of the bottom surface of the insert and the curved portion of the top surface of the recess and the curved portion of the bottom surface of the recess define segments of substantially concentric circles.
本文转自：China Industry News