Patent ID: 6872034
Filing Date: 2005-03-29
Classification: B23C,Y10T

Abstract:
1. A tangential cutting insert comprising: two identical opposing end surfaces having 180° rotational symmetry about a first axis A a peripheral side surface extending between the two opposing end surfaces, and a peripheral edge formed at the intersection of each end surface and the peripheral side surface, at least two sections of each peripheral edge constituting cutting edges, the peripheral side surface comprising: two identical opposing major side surfaces having 180° rotational symmetry about a second axis A two identical opposing minor side surfaces having 180° rotational symmetry about a third axis A a minor plane P a major plane P a median plane M being defined by the second axis A each end surface having four corners, two lowered corners and two raised corners, the lowered corners being closer to the median plane M than the raised corners; each end surface being provided with at least one projecting abutment member having a projecting abutment surface, wherein in a side view of either major side surface, the projecting abutment surface lies on a concave surface.