US 2016/0354850 A1Published application

Method of manufacturing gear-cutting tools

AssigneeCaterpillar Inc.

InventorsGABRIEL J. ELLICOTT, Richard G. Marsh, Scott A. Johnston

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Abstract

A method of manufacturing a gear-cutting tool is disclosed. The gear-cutting tool includes a base portion and cutter teeth extended from the base portion. Each cutter tooth includes a cutting tip portion. The method initiates with hardening the gear-cutting tool with a first hardening process. Thereafter, coating the cutter teeth with a wear resistant material and then hardening the cutting tip portion of each of the cutter teeth with a second hardening process. In the second hardening process, the heat treat is directed to penetrate through the wear resistant material. This process imparts the heat treatment to the wear resistant material and the cutting tip portion of the cutter teeth of the gear-cutting tool.

Claims1

Dependent claims

A method of manufacturing a gear-cutting tool, the gear-cutting tool having a base portion and a plurality of cutter teeth extended from the base portion, each cutter tooth of the plurality of cutter teeth having a cutting tip portion, the method comprising:

hardening the gear-cutting tool with a first hardening process;
coating the plurality of cutter teeth of the gear-cutting tool with a wear resistant material;
hardening the cutting tip portion of each of the plurality of cutter teeth with a second hardening process, wherein the second hardening process including:
directing the heat treat of the second hardening process to penetrate the wear resistant material to impart the heat treatment to the wear resistant material and the cutting tip portion of the plurality of cutter teeth of the gear-cutting tool.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 14/730,317Filed 4 Jun 2015
Published: 8 Dec 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

B23F 21/16
Milling tools: hobs
C21D 1/06
General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering: surface hardening
C21D 9/22
Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor: for drills; for milling…
C23C 4/10
Characterised by the coating material: oxides, borides, carbides, nitrides or silicides; Mixtures thereof

Family

No related US applications are recorded in the indexed filing history.

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