Cutting insert having V-shaped corner views and milling tool

摘要

A cutting insert has eight identical main cutting edges. Four main cutting edges can operate with a positive axial rake and four can operate with a negative axial rake. The cutting insert has two opposing identical end surfaces and a peripheral surface extending between the end surfaces. The cutting insert is square-shaped in end views. Each end surface has four corners, two lowered corners and two raised corners. A diagonal line passes through the lowered corners of each end surface. For a given orientation of the cutting insert the peripheral surface has a V-shape in views along the two diagonal lines associated with each end surface, the two V-shapes being identical in form and oriented in opposite directions.

主权项

1. A cutting insert (10) comprising two opposing identical end surfaces (12) and a peripheral surface (14) extending therebetween, the peripheral surface (14) comprising four identical side surfaces (16) and meeting the end surface at peripheral cutting edges (24), the cutting insert (10) being square-shaped in end views thereof, each end surface (12) having four corners (22), two diagonally opposite lowered corners (22′) and two diagonally opposite raised corners (22″);
a diagonal line (L1, L2) passes through the lowered corners (22′) of each end surface (12); wherein for a given orientation of the cutting insert (10): the peripheral surface (14) has a V-shape in a view along the diagonal line (L1) associated with one end surface (12′), and the peripheral surface (14) has a V-shape in a view along the diagonal line (L2) associated with the other end surface (12″); the two V-shapes being identical in form and oriented in opposite directions.