Method of refurbishing a high speed rotor
AssigneeSundstrand Corporation
InventorsMohd A. Aleem, James L. Lobsinger, Jerry D. Wefel
Life of this patent
Estimating the term…
Abstract
According to the invention, a rotor is provided having a cylindrical core and a protective can closely fit and secured with the core. The core is provided with two axially spaced, annular reliefs spaced inwardly from points of welding which secure the can and core and connected by at least two circumferentially spaced, axial reliefs. To effect removal of the can, a cutting tool is extended through the can along the extent of the reliefs. With the cuts completed, access sections are defined and are separable from the core. The remainder of the can, including the weld material, can be machined off using conventional techniques.
Claims10
A method of removing a protective can disposed over a core subassembly having a peripheral outer surface and a rotational axis comprising the steps of:
- providing at least one relief in the peripheral outer surface of the core subassembly;
- cutting the can along the relief to define at least one access section;
- said relief permitting extension of a cutting means entirely through the can and accommodating the cutting means so that the cutting means will not damage the core subassembly;
- and
- removing the access section to expose the core subassembly so that the core subassembly can be repaired or refurbished.
A method of removing a cylindrical can disposed over and welded to a core subassembly including a core with opposed ends having a lengthwise rotational axis and an end turn support fixed at each end of the core comprising the steps of:
- providing an annular relief in each of the end turn supports prior to assembling the can with the core subassembly;
- providing at least one longitudinally extending relief in the core subassembly between the reliefs in the end turn supports prior to assembling the can with the core subassembly;
- and
- cutting the can along the reliefs to define at least one access section;
- said reliefs permitting extension of a cutting means entirely through the can and accommodating the cutting means so that the cutting means will not damage the core subassembly;
- and
- removing the access section to expose the core subassembly so that the core subassembly can be repaired or refurbished.
Dependencies are inferred from the claim text.