Double-sided tangential cutting insert

Abstract

The invention discloses a double-sided tangential cutting insert comprising a pair of cutting rake faces, a pair of major side surfaces and a pair of opposing minor side faces each having a twisted convex shape. Each of the cutting rake faces is defined between a pair of main cutting edges, a pair of full nose cutting edges, and a pair of opposing convex minor cutting edges. Each of the minor sidefaces is defined between one of the convex minor cutting edges at one of the rake faces and one of the convex minor cutting edges at the other one of the rake faces wherein, at each minor side face,a ridge line interconnects an apex of the convex minor edge at the one of the rake faces and an apex of the convex minor cutting edge at the other one of the rake faces. Other variants and embodimentsare broadly contemplated herein.

Description

[0001] Cross references to related patent applications [0002] This patent application claims priority under Section 8 of the Patent Cooperation Treaty (PCT) to US Patent Application Serial No. 15 / 475,731 filed March 31, 2017, which application is hereby incorporated by reference in its entirety. Background technique [0003] The present disclosure relates to indexable double-sided tangential cutting inserts and cutting tool systems using the indexable double-sided tangential cutting inserts for a variety of rotary milling applications. In one non-limiting specific embodiment, an indexable double-sided tangential cutting insert according to the present invention is particularly useful in circumferential rotary milling applications for machining difficult-to-machine materials. In another non-limiting embodiment, an indexable double-sided tangential cutting insert according to the present invention is uniquely useful for generating segmented chips, for example, when machining c...

AI Technical Summary

Problems solved by technology

Disadvantages of the type of cutting inserts disclosed in these patents, including the difficulty in effectively balancing the required surface finish and perpendicularity between the machined surface and the machined wall on the workpiece, such as in slot milling, largely lie primarily in the cutting Complex cutting edge geometry on the secondary cutting edge formed between the rake face and the secondary flank

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