Modular cutting insert and method of making same

Patent metadata

Field	Value
Publication number	US-9440294-B2
Application number	US-201414188457-A
Country	US
Kind code	B2
Filing date	Feb 24, 2014
Priority date	Jan 31, 2012
Publication date	Sep 13, 2016
Grant date	Sep 13, 2016

Abstract

A cutting insert for use on a tool body includes a first member formed in a predetermined shape and a second member formed separate from the first member in a second predetermined shape and coupled to the first member. At least one of the first member or the second member comprise a number of cutting portions adapted to perform cutting operations on a workpiece.

First claim

What is claimed is:

1. A cutting insert for use on a tool body, the cutting insert comprising:
a first member having a first mating portion, wherein the first mating portion includes a first recess portion formed therein; and
a second member formed separate from the first member and coupled to the first member, the second member having a second mating portion in engagement with the first mating portion, wherein the second mating portion includes a second recess portion formed therein that is generally aligned with the first recess portion,
wherein one of the first member or the second member comprise a cutting portion adapted to perform cutting operations on a workpiece, and
wherein the first member includes a first locating feature and the second member includes a second locating feature configured to cooperatively engage the first locating feature in a manner that aligns the first member and the second member in a predetermined manner.

2. The cutting insert of claim 1 , wherein the first recessed portion of the first member and the second recessed portion of the second member form a sealed chamber within the cutting insert.

3. The cutting insert of claim 2 , wherein the first recessed portion of the first member and the second recessed portion of the second member are axially aligned.

4. The cutting insert of claim 3 , wherein the first recessed portion of the first member does not extend through the first member to a top portion.

5. The cutting insert of claim 4 , wherein the second recessed portion of the second member does not extend through the second member to a bottom portion.

6. The cutting insert of claim 1 , wherein the first mating portion includes additional first recess portions formed therein and the second mating portion includes additional second recess portions formed therein that are generally aligned with the additional first recess portions.

7. The cutting insert of claim 6 , wherein the additional first recessed portions of the first member and the additional second recessed portions of the second member form additional sealed chambers within the cutting insert.

8. The cutting insert of claim 1 , wherein the first member is formed from a first material and the second member is formed from a second material different from the first material.

9. The cutting insert of claim 1 , wherein the first member is formed from a first material and the second member is formed from the first material.

10. The cutting insert of claim 1 , wherein the first locating feature includes a projection extending from the first mating portion.

11. The cutting insert of claim 10 , wherein the second locating feature includes a groove formed in the first mating portion.

12. The cutting insert of claim 11 , wherein the first member includes a first aperture and the second member includes a second aperture, the first aperture and the second aperture being generally aligned and configured to receive a mechanism for coupling the cutting insert to the tool body.

13. The cutting insert of claim 12 , wherein the first aperture of the first member and the second aperture of the second member are axially aligned.

14. A method of forming a cutting insert for performing cutting operations on a workpiece, the method comprising:
forming a first member having a first mating portion with a first recess portion formed therein;
forming a second member separate from the first member, the second member having a second mating portion with a second recess portion formed;
forming a cutting portion on one of the first member or the second member;
engaging the first mating portion with the second portion;
aligning the first recess portion with the second recess portion; and
coupling the first member and the second member together to form a single cutting insert,
wherein at least one of forming a first member and forming a second member comprise forming via a pressing or injection molding process.

15. The method of claim 14 , wherein coupling the first member and the second member together comprises sintering the first member and the second member to form a single member.

16. A method of forming a cutting insert for performing cutting operations on a workpiece, the method comprising:
forming a first member having a first mating portion with a first recess portion formed therein;
forming a second member separate from the first member, the second member having a second mating portion with a second recess portion formed;
forming a cutting portion on one of the first member or the second member;
engaging the first mating portion with the second portion;
aligning the first recess portion with the second recess portion; and
coupling the first member and the second member together to form a single cutting insert,
forming the first member in a first predetermined shape from a powdered tungsten carbide material; and
forming the second member in a second predetermined shape at least in-part from a scrapped powdered tungsten carbide material.

Assignees

• Kennametal Inc

Inventors

• Gey Christoph
• Mehrotra Pankaj K

Classifications

• B23B27/145

  characterised by having a special shape · CPC title

• B28B1/002 Primary

  assembled from preformed elements · CPC title

• Y10T29/49826

  Assembling or joining · CPC title

• B23P15/28

  cutting tools (sawing tools B23D63/00, B23D65/00; files or rasps B23D73/00) · CPC title

• B23B27/148

  Composition of the cutting inserts · CPC title