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1. WO2004007130 - METHOD OF MAKING A GAS TURBINE ENGINE DIFFUSER

Publication Number WO/2004/007130
Publication Date 22.01.2004
International Application No. PCT/CA2003/001008
International Filing Date 08.07.2003
Chapter 2 Demand Filed 12.02.2004
IPC
B23B 41/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
41Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
F04D 29/44 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
40Casings; Connections for working fluid
42for radial or helico-centrifugal pumps
44Fluid-guiding means, e.g. diffusers
CPC
B23B 41/00
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
41Boring or drilling machines or devices specially adapted for particular work
F04D 29/444
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
40Casings; Connections of working fluid
42for radial or helico-centrifugal pumps
44Fluid-guiding means, e.g. diffusers
441especially adapted for elastic fluid pumps
444Bladed diffusers
F05D 2250/52
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2250Geometry
50Inlet or outlet
52Outlet
Y10T 29/49316
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
29Metal working
49Method of mechanical manufacture
49316Impeller making
Y10T 29/4932
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
29Metal working
49Method of mechanical manufacture
49316Impeller making
4932Turbomachine making
Y10T 29/49995
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
29Metal working
49Method of mechanical manufacture
49995Shaping one-piece blank by removing material
Applicants
  • PRATT & WHITNEY CANADA CORP. [CA]/[CA] (AllExceptUS)
  • SASU, Ioan [CA]/[CA] (UsOnly)
  • GENDREAU, Bertrand [CA]/[CA] (UsOnly)
  • LANOUE, Robert, F. [CA]/[CA] (UsOnly)
Inventors
  • SASU, Ioan
  • GENDREAU, Bertrand
  • LANOUE, Robert, F.
Agents
  • BAILEY, Todd, D.
Priority Data
10/194,55615.07.2002US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD OF MAKING A GAS TURBINE ENGINE DIFFUSER
(FR) PROCEDE DE FABRICATION D'UN DIFFUSEUR DE MOTEUR A TURBINE A GAZ
Abstract
(EN)
A method of machining a plurality of circumferentially spaced bores in an object, each of the bores extending generally tangentially and inwardly and being positioned in the object so as to generally asymmetrically intersect two adjacent bores, comprises the steps of: providing an object; determining a plurality of bore positions generally around a circumference of the object; machining a first bore and performing at least one subsequent machining operation on the first bore to substantially complete the first bore; machining a second bore immediately adjacent to the completed first bore, wherein the second bore is machined so as to intersect the completed first bore, and performing at least one subsequent machining operation on the second bore to substantially complete the second bore; sequentially machining a remaining plurality of bores except a final bore, wherein each said bore is machined so as to intersect an immediately adjacent completed bore; and machining the final bore immediately intermediate the first bore and a second-final bore wherein the final bore is machined so as to intersect the first and second-final bores.
(FR)
L'invention concerne un procédé destiné à former une pluralité d'alésages circonférentiellement espacés dans un objet, chacun de ces alésages se prolongeant généralement de manière tangentielle vers l'intérieur et étant disposé dans l'objet de sorte à faire intersection de manière généralement asymétrique avec deux alésages adjacents. Ce procédé consiste à utiliser un objet, à déterminer une pluralité de positions d'alésage généralement autour d'une circonférence de l'objet, à former un premier alésage et à réaliser au moins une opération d'usinage subséquente sur le premier alésage en vue de terminer sensiblement ce premier alésage, à former un second alésage immédiatement adjacent au premier alésage terminé, le second alésage étant formé de façon à faire intersection avec le premier alésage terminé, à réaliser au moins une opération d'usinage subséquente sur le second alésage de sorte à terminer sensiblement ledit second alésage, à former séquentiellement une pluralité d'alésages restants à l'exception d'un alésage final, chaque alésage étant formé de manière à faire intersection avec un alésage terminé immédiatement adjacent, puis à former l'alésage final situé immédiatement entre le premier alésage et un second alésage final, l'alésage final étant formé de sorte à faire intersection avec le premier alésage et le second alésage final.
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