Press-fit components disassembly tooling and process

Patent metadata

Field	Value
Publication number	US-11867291-B2
Application number	US-202217804313-A
Country	US
Kind code	B2
Filing date	May 27, 2022
Priority date	May 27, 2022
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

A tool and an associated process for removing a press-fit component from an associated engine component, wherein the engine component is pushed in a first axial direction while the press-fit component is restrained from axially moving in the first axial direction.

First claim

The invention claimed is:

1. A tool for removing a seal from an engine component, wherein an interference fit is provided between an inner diameter (ID) surface of the seal and an outer diameter (OD) surface of the engine component, the ID surface and the OD surface extending circumferentially around a central axis, the tool comprising:
a support defining an annular seat offering an axial abutment for the seal around the OD surface of the engine component, the axial abutment restraining axial movement of the seal in a first axial direction, the support including:
a base defining an enclosure for receiving the engine component,
shell halves engageable around the seal on the OD surface of the engine component, the shell halves seated on the base, the shell halves jointly forming the annular seal, and
a cap releasably securable to the base over the shell halves, the cap having a central projection defining a central hole in registry with a counterbore formed by the shell halves, the central projection engageable in the counterbore; and

a pusher axially engageable with the engine component to transfer a pushing force to the engine component in the first axial direction.

2. The tool according to claim 1 , wherein the axial abutment is defined by a bottom wall of the counterbore formed by the shell halves, the counterbore having a cylindrical wall configured to surround the seal when the seal rests on the bottom wall of the counterbore.

3. The tool according to claim 1 , wherein pins are engageable with the shell halves and the base to at least one of:
maintain the shell halves in a proper position relative to the base; or
restrict angular movement between the shell halves around the central axis.

4. The tool according to claim 1 , wherein the cap has opposed longitudinal side portions extending laterally beyond the counterbore over the top surface of the shell halves.

5. The tool according to claim 1 , wherein at least a portion of an interior surface of the enclosure is lined with a protective padding.

6. The tool according to claim 1 , wherein the pusher has a male portion slidably axially engageable in a central bore extending through a first end of the engine component, and an annular shoulder extending around the male portion for abutment against a corresponding annular shoulder of the engine component.

7. The tool according to claim 1 , wherein the pusher has a collar acting as a stopper for limiting axial travel of the pusher in the first axial direction.

Assignees

• Pratt & Whitney Canada

Inventors

• Lewandowski Mariusz
• Mokrzyński Grzegorz
• Cyr-Carrier Gabriel

Classifications

• F16J15/3268 Primary

  Mounting of sealing rings · CPC title

• B23P19/025

  For detaching only · CPC title

• B25B27/0028 Primary

  Tools for removing or installing seals (B25B27/0092 takes precedence) · CPC title

• B25B27/28

  positioning or withdrawing resilient bushings or the like · CPC title

• B25B27/06

  inserting or withdrawing sleeves or bearing races · CPC title