Device for assembling axisymmetric components

• US 20010052703A1
• Filed: 05/30/2001
• Published: 12/20/2001
• Est. Priority Date: 05/31/2000
• Status: Active Grant

• Current Assignee: Techspace Aã©Ro SA (Safran SA), Snecma Moteurs
• Original Assignee: Snecma Moteurs
• Inventors: Bos, Mathieu, Ryhon, Sebastien
• Granted Patent: US 6,543,818 B2
• Time in Patent Office: Days
• US Class Current: 285/412
• CPC Class Codes: F16B 2200/506 bolted or riveted
• CPC Class Codes: F16L 23/032 characterised by the shape or composition of the flanges

Abstract

The present invention relates to an axisymmetric structural component (1), one of the ends of which is fitted with an inner circular flange (2) for assembling, by bolting, the said axisymmetric structural component (1) with a second axisymmetric structural component (10), the said flange comprising housings (60, 61, 62, . . . ) for receiving fixing elements (70, 71, 72, . . . ) such as bolts, pins or threaded rods, the said housings (60, 61, 62, . . . ) being arranged on the circumference of the said flange (2) at regular intervals, characterized in that each housing (60, 61, 62, . . . ) is, in longitudinal section (A-A) along a plane passing through the rotational axis of the component (1), T-shaped and consists of a first essentially cylindrical portion (6) which is longitudinally open on the inner face (x) of the axisymmetric structural component (1) and transversely open on the contact face (y) of the flange (2) in the assembly, on which portion is mounted a second essentially semi-cylindrical portion (6′) which is also longitudinally open on the inner face (x) of the said structural component (1), the second portion (6′) having an essentially D-shaped transverse section, the diameter of the first cylindrical portion (6) being less than the diameter of the semi-cylindrical portion (6′).

Claims

1. An axisymmetrical structural component, comprising:

an inner circular flange,

a plurality of housings for receiving fixing elements,

wherein said housings are T-shaped in a longitudinal section along a plane passing through the rotational axis of said component and comprise a cylindrical portion, wherein said cylindrical portion is longitudinally open on the inner face of said component and transversely open on the contact face of said flange, on which a semi-cylindrical portion is mounted, said semi-cylindrical portion being longitudinally open on the inner face of said component and having a D-shaped transverse section, the diameter of said cylindrical portion being less than the diameter of said semi-cylindrical portion.

2. The axisymmetrical structural component of

claim 1

, wherein said component comprises aluminum.

3. The axisymmetrical structural component of

claim 1

, wherein said housings are arranged on the circumference of said flange at regular intervals.

4. The axisymmetrical structural component of

claim 1

, wherein said receiving fixing elements are selected from the group consisting of bolts, pins and threaded rods.

5. A process for manufacturing an inner circular flange on an axisymmetrical structural component comprising housings for receiving fixing elements, said process comprising:

machining said housings on the circumference of said flange at regular intervals using a milling cutter, wherein said cutter is essentially T-shaped and during milling the axis of said milling cutter moves in a direction which is perpendicular to the rotational axis of said component while at the same time remaining parallel to said rotational axis.

6. The process of

claim 5

, wherein said axisymmetrical component is conical or cylindrical.

7. The process of

claim 5

, wherein said housings are adapted for receiving fixing elements selected from the group consisting of bolts, pins and threaded rods.