Indexable cutting insert and indexable cutting insert holder

摘要

Indexable cutting insert with a plate-like main body having two parallel main surfaces and a peripheral surface connecting the two main surfaces and with a plurality of sections angled with respect to one another, wherein four cutting edges that extend transversely to the main surfaces are provided on the peripheral surface at the transition to sections, that are angled with respect to one another, of the peripheral surface, and wherein the position of the cutting edges defines a quadrilateral in the plan view of the main surfaces. Fixing with more favorable leverages and permanently more precise positioning of the cutting edges are provided by the quadrilateral having in each case two short and two long sides and cutting edges oriented in each case in opposite directions in the peripheral direction at adjacent corners and oriented in each case in the same direction at diagonally opposite corners of the quadrilateral.

主权项

1. Indexable cutting insert for grooving or parting, comprising a plate-shaped main body with two parallel main surfaces and a peripheral surface joining the two main surfaces and comprising a plurality of sections that are angled with respect to one another,
wherein four cutting edges extending transversely to the main surfaces are provided on a peripheral surface on the transition of sections of the peripheral surface that are angled with respect to one another, wherein in plan view of the main surfaces, the position of the cutting edges defines an imaginary quadrilateral, wherein the imaginary quadrilateral has two short and two long sides, wherein the cutting edges are oriented in each case, oppositely on adjacent corners of the imaginary quadrilateral in a peripheral direction and oriented in the same direction on diagonally opposite corners of the imaginary quadrilateral, wherein sections extending along the shorter sides of the peripheral surface of the imaginary quadrilateral comprise a positioning notch that includes a concave-shaped portion with a radius, wherein the radius is smaller in a center of the positioning notch than a radius of a pin provided for engaging with the positioning notch, and wherein cutting surfaces of cutting edges are oriented to face the adjacent long side of the imaginary quadrilateral and to turn away from the adjacent short side of the imaginary quadrilateral.