Broach tool rake face with a tailored surface topography

Patent metadata

Field	Value
Publication number	US-9656335-B2
Application number	US-201414200853-A
Country	US
Kind code	B2
Filing date	Mar 7, 2014
Priority date	Mar 8, 2013
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

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

First claim

What is claimed is:

1. A method for manufacturing a broach tool comprising:
identifying an application regime for which a tailored surface topography is to be used;
determining the tailored surface topography for the application regime, the tailored surface topography including a combination of depressed wells, microchannels, grooves, pockets, dimples, pyramids, and ovals to be formed in a broach tool rake face of the broach tool and selected to control a coefficient of friction between the broach tool rake face and a workpiece;
selecting an appropriate processing method to form the tailored surface topography in the broach tool rake face; and
forming the tailored surface topography in the broach tool rake face using the processing method.

2. The method as recited in claim 1 , further comprising:
identifying a high speed, low load application regime relationship.

3. The method as recited in claim 1 , further comprising:
identifying a high-medium speed and medium load application regime relationship.

4. The method as recited in claim 1 , further comprising:
identifying a low-medium speed and high load application regime relationship.

5. The method as recited in claim 1 , further comprising:
determining a shape factor for the tailored surface topography.

6. The method as recited in claim 1 , further comprising:
determining a pitch, pattern design for the tailored surface topography.

7. The method as recited in claim 1 , further comprising:
determining an orientation for the tailored surface topography.

8. The method as recited in claim 1 , further comprising:
selecting a high energy deposition method to form the tailored surface topography.

9. The method as recited in claim 8 , further comprising:
selecting a cold spray method to form the tailored surface topography.

10. The method as recited in claim 8 , further comprising:
selecting a kinetic metallization method to form the tailored surface topography.

11. The method as recited in claim 8 , further comprising:
selecting a plasma deposition method to form the tailored surface topography.

12. The method as recited in claim 8 , further comprising:
selecting an electron-beam based method to form the tailored surface topography.

13. The method as recited in claim 1 , further comprising:
alternating between subtractive and additive processing methods to form the tailored surface topography.

14. The method as recited in claim 1 , further comprising:
determining a density and a distribution of the pockets as a function of the broach tool speed based on the application regime.

15. The method as recited in claim 1 , further comprising:
determining at least one shape of the pockets based on the application regime and the processing method.

Assignees

• United Technologies Corp

Inventors

• El-Wardany Tahany I
• Schmidt Wayde R

Classifications

• B23D43/02 Primary

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

• B23D2043/025

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

• B23P15/42

  broaching tools · CPC title

• Y10T407/16

  Rectilinear broach · CPC title

• B23F21/24

  Broach-milling tools · CPC title