Finishing insert with improved chip control

Details Finishing insert with improved chip control Finishing insert with improved chip control

B - Operations, Transporting

26

D

29/32

B26D 1/00 (2006.01)

Patent

CA 1181231

FINISHING INSERT WITH IMPROVED CHIP CONTROL ABSTRACT OF THE DISCLOSURE A finishing insert for use with an indexable cutting tool is formed from a flat wafer of cutting material which is generally polygonal in plan form and includes a pair of opposed faces and a plurality of upstanding side walls extending therebetween. The juncture of the side walls with each face defines the cutting edge of the insert. The polygonal insert includes a plurality of radiused corner portions and is provided with at least one non-planar insert face wherein the corner portions thereof slope inwardly towards the opposed face of the insert. Each corner portion further includes a pair of generally triangular chip grooves separated by a planar central triangular land area. Each chip groove is spaced from the peripheral cutting edge of the insert to define a side land area which increases in width from the corner portion to its opposed end. In addition each chip groove increases in both width and depth from the corner portion to its opposed end. Each peripheral edge of the insert is generally trough-shaped in configuration and includes a central planar undercut area. Each peripheral edge further includes a V- shaped land area with the apex thereof being disposed closest to but spaced from the undercut area. The unique configuration of the chip grooves and the peripheral edges of the insert function to reduce the forces imposed on the insert and enables the insert to be utilized over a wide range of feed rates and at various cutting depths corresponding to finishing operations, while simultaneously increasing the life of the insert.

403027

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