# US 7,410,331 B2 · Tool

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- Number: US 7,410,331 B2
- Document ID: US7410331B2
- Status: Granted
- Kind: B2
- Application number: 11/427,354
- Filed: 2006-06-29
- Published: 2008-01-03
- Granted: 2008-08-12
- Earliest claimed: 2006-06-29
- Assignees: Seco Tools AB
- Inventors: Christer Ejderklint; Bertrand Riviere; Dominique Meyer
- Web page: https://patentgrep.com/patent/US7410331B2

## CPC

- B23C 5/08: Disc-type cutters
- B23C 5/06: Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface
- B23C 5/202: {Plate-like cutting inserts with special form (special form related to securing of the insert B23C5/22)}
- B23C 2200/083: curved
- B23C 2200/085: discontinuous
- B23C 2200/326: by chip-breaking grooves
- B23C 2200/367: Mounted tangentially, i.e. where the rake face is not the face with largest area
- Y10T 407/192: with separate means to fasten tool to holder
- Y10T 407/23: including tool having plural alternatively usable cutting edges
- Y10T 407/235: with integral chip breaker, guide or deflector
- Y10T 407/24: with chip breaker, guide or deflector
- B23C: MILLING (broaching B23D; broach-milling in making gears B23F; arrangement for copying or controlling B23Q)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

In a cutting insert and a milling tool, where the cutting insert is to be on-edge mounted to the tool, the cutting insert includes a polygonal body of wear resistant material. The body includes a first side surface and a second side surface opposing one another and therebetween a number of end surfaces. The intersection of two end surfaces form a cutting edge at a corner portion. The first side surface is substantially planar and the second side surface connects to raised portions at corner portions. The first side surface is greater than the second side surface.

## Claims

### Claim 1

A replaceable cutting insert to be on-edge mounted to a tool, the cutting insert comprising a polygonal body of wear resistant material, the body including a first side surface and a second side surface opposing one another and therebetween a number of end surfaces, an intersection of two end surfaces extending between the first side surface and the second side surface forming a cutting edge at a corner portion, the cutting edge extending between the first side surface and the second side surface, the cutting insert being provided with a central hole to receive a clamping device, the hole intersecting the first side surface and the second side surface, wherein the first side surface is substantially planar, the second side surface connects to raised portions at corner portions, and the first side surface is larger than the second side surface.

### Claim 2 (depends on 1)

The insert according to claim 1, wherein a greatest width of the cutting insert is between the raised portions and the first side surface and the cutting edge intersects a plane containing the second side surface.

### Claim 3 (depends on 2)

The insert according to claim 2, wherein the corner portion comprises a first cutting edge and a second cutting edge and the first cutting edge extends at an acute angle to a line perpendicular to the first side surface or to a plane containing an end surface.

### Claim 4 (depends on 3)

The insert according to claim 3, wherein the acute angle is within the interval 3 to 9°.

### Claim 5 (depends on 3)

The insert according to claim 3, wherein the acute angle is chosen within the interval 4 to 5°.

### Claim 6 (depends on 3)

The insert according to claim 3, wherein the first cutting edge is continuous with the second cutting edge.

### Claim 7 (depends on 3)

The insert according to claim 3, wherein a clearance face trails the cutting edges, the clearance face having a generally greater extension behind the second cutting edge than behind the first cutting edge.

### Claim 8 (depends on 1)

The insert according to claim 1, wherein the cutting edge connects to a rake face, the rake face being positioned at least partly in a plane that slopes downwardly and inwardly from the first cutting edge at an acute angle.

### Claim 9 (depends on 8)

The insert according to claim 8, wherein the rake face forms a part of a concave recess in the end surface.

### Claim 10 (depends on 1)

The insert according to claim 1, wherein the corner portion comprises a first cutting edge and a second cutting edge and the first cutting edge extends at an acute angle to a line perpendicular to the first side surface or to a plane containing an end surface.

### Claim 11 (depends on 10)

The insert according to claim 10, wherein the acute angle is within the interval 3 to 9°.

### Claim 12 (depends on 10)

The insert according to claim 10, wherein the acute angle is chosen within the interval 4 to 5°.

### Claim 13 (depends on 10)

The insert according to claim 10, wherein the first cutting edge is continuous with the second cutting edge.

### Claim 14 (depends on 10)

The insert according to claim 10, wherein a clearance face trails the cutting edges, the clearance face having a generally greater extension behind the second cutting edge than behind the first cutting edge.

### Claim 15 (depends on 1)

A milling tool having a milling body, a periphery of the milling body being equipped with at least one cutting insert, the tool comprising at least one pocket, each pocket carrying an on-edge mounted cutting insert according to claim 1.