Cutting insert and pocket with uninterrupted and continuous seating surface perimeter

Patent metadata

Field	Value
Publication number	US-2016207124-A1
Application number	US-201514599598-A
Country	US
Kind code	A1
Filing date	Jan 19, 2015
Priority date	Jan 19, 2015
Publication date	Jul 21, 2016
Grant date	—

Abstract

A round cutting insert has a seating surface with a plurality of projections formed on the seating surface proximate a central opening. The projections do not extend to an outer perimeter of the seating surface such that the outer perimeter is continuous and uninterrupted a full 360 degrees. An insert-receiving pocket includes a seating surface with a plurality of dimples for receiving the plurality of projections to prevent rotation of the cutting insert when mounted in the insert-receiving pocket. The plurality of dimples do not extend to an outer perimeter of the seating surface such that the outer perimeter is continuous and uninterrupted a full 360 degrees, thereby maximizing contact between the cutting insert and the pocket.

First claim

What is claimed is:

1 . A round cutting insert comprising an outer surface that terminates outwardly in a cutting edge and terminates inwardly in an inner edge; and a seating surface extending radially outward from a central opening to an outer perimeter, and a plurality of projections formed on the seating surface, wherein the plurality of projections do not extend into the outer perimeter of the seating surface such that the outer perimeter of the seating surface is uninterrupted and continuous a full 360 degrees.

2 . The round cutting insert of claim 1 , wherein the plurality of projections are formed on the seating surface adjacent to the central opening of the cutting insert.

3 . The round cutting insert of claim 2 , wherein the plurality of projections each include a top surface contained in a plane that is different with respect to a plane that contains the cutting edge.

4 . The round cutting insert of claim 2 , wherein the plurality of projections are evenly circumferentially spaced about the seating surface.

5 . The round cutting insert of claim 1 , wherein the cutting insert is indexable and reversible.

6 . The round cutting insert of claim 1 , wherein the outer surface slopes downward from the cutting edge toward the inner edge at a rake angle of between five degrees and twenty degrees.

7 . The round cutting insert of claim 1 , wherein the outer surface is contained in a plane and the seating surface is contained in another plane that is non-parallel to the plane containing the outer surface.

8 . The round cutting insert of claim 1 , wherein the seating surface is circular.

9 . A cutting tool assembly, comprising:
a tool body including a plurality of insert-receiving pockets, each insert-receiving pocket including a sidewall and a seating surface extending radially outward from a central opening, each insert-receiving pocket further including a seating surface extending radially outward to an outer perimeter, and a plurality of dimples formed in the insert-receiving pocket; and a round cutting insert mounted in a respective insert-receiving pocket, each round cutting insert including an outer surface that terminates outwardly in a cutting edge and terminates inwardly in an inner edge; and a seating surface extending radially outward from a central opening to an outer perimeter, and a plurality of projections formed on the seating surface, wherein the plurality of dimples do not extend into the outer perimeter of the seating surface such that the outer perimeter of the seating surface is uninterrupted and continuous a full 360 degrees, and wherein the plurality of projections do not extend into the outer perimeter of the seating surface such that the outer perimeter of the seating surface is uninterrupted and continuous a full 360 degrees, thereby providing maximum contact between the seating surface of the cutting insert and the seating surface of the insert-receiving pocket when the cutting insert is mounted in the insert-receiving pocket.

10 . The cutting tool assembly of claim 9 , wherein the plurality of projections formed on the seating surface of the cutting insert are adjacent to the central opening of the cutting insert, and wherein the plurality of dimples formed in the seating surface of the insert-receiving pocket are adjacent to the central opening of the insert-receiving pocket.

11 . The cutting tool assembly of claim 9 , wherein the plurality of projections each include a top surface contained in a plane that is different with respect to a plane that contains the cutting edge.

12 . The cutting tool assembly of claim 9 , wherein the plurality of projections are evenly circumferentially spaced about the seating surface.

13 . The cutting tool assembly of claim 9 , wherein the cutting insert is indexable and reversible.

14 . The cutting tool assembly of claim 9 , wherein the outer perimeter of the seating surface of the cutting insert is circular, and wherein the outer perimeter of the seating surface of the insert-receiving pocket is circular.

Assignees

• Kennametal Inc

Inventors

• Brown Paul Albert
• Brunetto Lance David

Classifications

• B23C2200/161

  with projections · CPC title

• B23C2200/168

  with features related to indexing · CPC title

• B23C5/20

  with removable cutter bits or teeth {or cutting inserts} · CPC title

• B23C2200/045

  Round · CPC title

• B23C5/08 Primary

  Disc-type cutters · CPC title