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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10252382 B1

PDFFull Text
Date of Patent:
Apr. 09, 2019

Filed:

Jun. 07, 2016

Method of machining surfaces of rotor disc and grinding machine therefor

Applicant:

Pratt & Whitney Canada Corp., Longueuil, CA;

Inventors:

Amr Elfizy, Saint-Basile-le-Grand, CA;

Lafleche Gagnon, Sainte-Julie, CA;

Sylvain Jette, St-Lambert, CA;

Assignee:

Pratt & Whitney Canada Corp., Longueuil, Quebec, CA;

Attorney:

Norton Rose Fulbright Canada LLP

Primary Examiner:

Ryan J Walters

Int. Cl.
CPC ...
B23P 15/04 (2006.01); B24B 19/26 (2006.01); B24B 5/14 (2006.01); B24B 5/04 (2006.01); B24B 5/02 (2006.01); B24B 19/00 (2006.01); B24B 27/00 (2006.01); B24B 41/00 (2006.01); B24D 5/02 (2006.01); B24D 7/02 (2006.01); B24D 7/18 (2006.01);
U.S. Cl.
CPC ...
B23P 15/04 (2013.01); B24B 5/02 (2013.01); B24B 5/04 (2013.01); B24B 5/14 (2013.01); B24B 19/009 (2013.01); B24B 19/26 (2013.01); B24B 27/0084 (2013.01); B24B 41/005 (2013.01); B24D 5/02 (2013.01); B24D 7/02 (2013.01); B24D 7/18 (2013.01); B24B 27/0007 (2013.01); F05D 2230/10 (2013.01); Y10T 29/37 (2015.01); Y10T 29/4932 (2015.01); Y10T 29/49325 (2015.01); Y10T 29/5177 (2015.01);
Abstract

A grinding machine for finishing turned surfaces of a rotor disc for a gas turbine engine, including a retaining mechanism for retaining the rotor disc and rotatable about a rotational axis corresponding to a central axis of the rotor disc, a spindle engaged to a grinding wheel and rotatable about a rotational axis corresponding to a central axis of the grinding wheel, the grinding wheel having an outer super abrasive surface, a translating mechanism engaged to at least one of the retaining mechanism and the spindle and actuable to provide a relative translational motion between the retaining mechanism and the spindle along three perpendicular axes, and a pivoting mechanism engaged to one of the retaining mechanism and the spindle and actuable to provide a pivoting motion of the rotational axis of one of the retaining mechanism and the spindle around a pivot axis perpendicular thereto.

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