Patent ID: 6579044
Filing Date: 2003-06-17
Classification: B23B,Y10T

Abstract:
A metal-cutting tool, comprising a disk-shaped or blade-shaped basic body having at least one recess for receiving a cutting insert, said cutting insert and said recess having lower, upper and rearward contact surfaces, said cutting insert adapted to be interchangeably clamped securely in said recess by an elastically spreadable clamping arm, which forms the upper contact surface of said recess while the mutual contact surfaces of the cutting insert and the recess are designed to fit together positively, wherein said lower contact surface of said cutting insert has a convex arc with the radius (R) and said lower contact surface of said recess has a concave arc with the radius (r), and R>r, whereby two defined contact points are formed at a beginning and an end of said contact surfaces, and wherein said upper contact surface of said cutting insert and said contact surface of said clamping arm are matched in such a way that the application of a clamping force at said contact surface occurs in an area that is at a distance from a symmetry line in a direction toward an active cutting edge of said cutting insert, and wherein said symmetry line is normal to a connecting line of said two defined contact points and is halfway between said two defined contact points.