Broach tool rake face with a tailored surface topography

Patent metadata

Field	Value
Publication number	US-10005144-B2
Application number	US-201715601392-A
Country	US
Kind code	B2
Filing date	May 22, 2017
Priority date	Mar 8, 2013
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

A broach tool includes a broach tool rake face with a tailored surface topography.

First claim

What is claimed is:

1. A broach tool comprising:
a broach tool rake face with a tailored surface topography,
wherein the tailored surface topography includes a combination of depressed wells, microchannels, grooves, pockets, dimples, pyramids and ovals formed in the broach tool rake face that control a coefficient of friction between the broach tool rake face and a workpiece.

2. The broach tool as recited in claim 1 , wherein said tailored surface topography is formed by a laser surface treatment.

3. The broach tool as recited in claim 1 , wherein said tailored surface topography is formed by laser texturing.

4. The broach tool as recited in claim 1 , wherein said tailored surface topography is formed by Electrical-Discharge Machining.

5. The broach tool as recited in claim 1 , wherein the broach tool is configured to machine a fir-tree slot in the workpiece.

Assignees

• United Technologies Corp

Inventors

• El-Wardany Tahany I
• Schmidt Wayde R

Classifications

• B23F21/26

  Broaching tools · CPC title

• B23D2043/025

  for producing grooves in turbines, e.g. for the insertion of blades · CPC title

• B23P15/42

  broaching tools · CPC title

• B23F21/24

  Broach-milling tools · CPC title

• B23D43/02 Primary

  for cutting by rectilinear movement (B23D43/08 takes precedence) · CPC title