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.:
Date of Patent:
Sep. 29, 2009
Filed:
Aug. 23, 2006
Francois Pierre Andre Bergerot, Dammarie les Lys, FR;
Laurent Leeder, Saint Germain les Corbeil, FR;
Jacques Pierre Felix Malterre, Moisenay, FR;
Bernard Adrien Edmond Souart, Savigny le Temple, FR;
Hubert Thomas, Savigny le Temple, FR;
Francois Pierre Andre Bergerot, Dammarie les Lys, FR;
Laurent Leeder, Saint Germain les Corbeil, FR;
Jacques Pierre Felix Malterre, Moisenay, FR;
Bernard Adrien Edmond Souart, Savigny le Temple, FR;
Hubert Thomas, Savigny le Temple, FR;
SNECMA, Paris, FR;
Abstract
A method of assembly of a turbomachine that includes a first module and a second module with a second shaft assembled by a bearing, the bearing including an outer ring shrink-fitted inside a journal integral with the first module and an inner ring integral with the second shaft. The second module is assembled on the first module by engagement of the second shaft, with the inner ring, inside the journal. The method includes a step of inserting the second module in the first module up to a determined distance such that the first and second modules are only partially assembled. The second shaft is centered with respect to the journal, the centering being controlled on the basis of measuring distance deviations with respect to a reference on the journal. The journal is expanded by heating its outer surface. After the step of expanding, the second module is displaced inside the first module so as to complete the assembly. This displacement step is started based on a predetermined temperature.