US 10,717,134 B2 · Cutting tool

Abstract

A cutting tool according to an aspect of the present disclosure includes a shank, a joint, and a cutting portion attached through the joint to the shank. The cutting portion includes a core and a surface portion. The surface portion is disposed around a central axis of the cutting portion to cover an outer circumferential surface of the core. The surface portion includes a cutting edge. The cutting edge is disposed on an outer circumferential surface of the surface portion and formed in a helical shape about the central axis. The surface portion is a composite sintered material including a hard phase formed of a plurality of diamond particles and a plurality of cubic boron nitride particles, and a binder phase forming the remainder.

Claims12

Dependent claims

A cutting tool comprising:

a shank;
a joint;
and
a cutting portion attached through the joint to the shank,
the cutting portion including:
a core;
and
a surface portion disposed around a central axis of the cutting portion to cover an outer circumferential surface of the core,
the surface portion including a cutting edge disposed on an outer circumferential surface of the surface portion and formed in a helical shape about the central axis,
the surface portion being a composite sintered material including:
a hard phase formed of a plurality of diamond particles and a plurality of cubic boron nitride particles;
and
a binder phase forming a remainder,
wherein the diamond particles arranged adjacent to each other in the composite sintered material are bonded at least partially to each other.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/062,739Filed 15 Nov 2016

Published

US 2018/0361485 A120 Dec 2018

Granted

21 Jul 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification30 codes

B23B 27/148
Cutting tools of which the bits or tips or cutting inserts are of special material: composition of the cutting inserts
B22F 5/06
Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product: of threaded articles, e.g. nuts
B22F 7/062
Of composite workpieces or articles from parts, e.g. to form tipped tools: involving the connection or repairing of preformed parts
B23B 27/20
With cutting bits or tips or cutting inserts rigidly mounted, e.g. by brazing: with diamond bits or cutting inserts

Cutting tool

Life of this patent

Cutting tool

Life of this patent

Abstract

Claims12