Cuff-blade attachment bushing removal

Patent metadata

Field	Value
Publication number	US-10183388-B2
Application number	US-201615225091-A
Country	US
Kind code	B2
Filing date	Aug 1, 2016
Priority date	Aug 1, 2016
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

A cuff-blade attachment bushing removal tool system includes an alignment plate comprising alignment holes defined through the alignment plate in a pattern of a plurality of bushing holes of a blade root, a bladder plate connected to the alignment plate, and a bladder positioned on the bladder plate such that a gap is formed between the bladder and the alignment plate to receive a blade root to align the alignment holes and the bushing holes of the blade root, wherein the bladder is transitionable between an uninflated position where the blade root can be inserted into the gap and an inflated position where the blade root is clamped between the bladder and the alignment plate.

First claim

What is claimed is:

1. A cuff-blade attachment bushing removal tool system, comprising:
an alignment plate comprising alignment holes defined through the alignment plate in a pattern of a plurality of bushing holes of a blade root;
a bladder plate connected to the alignment plate; and
a bladder positioned on the bladder plate such that a gap is formed between the bladder and the alignment plate to receive a blade root to align the alignment holes and the bushing holes of the blade root, wherein the bladder is transitionable between an uninflated position where the blade root can be inserted into the gap and an inflated position where the blade root is clamped between the bladder and the alignment plate.

2. The system of claim 1 , further comprising a plurality of frame arms extending from the alignment plate and the bladder plate and connected together to form a frame of the tool to hold the alignment plate and the bladder plate in position relative to each other.

3. The system of claim 1 , further comprising a bladder retainer connected to the bladder plate to retain the bladder to the bladder plate.

4. The system of claim 1 , further comprising a plurality of alignment pins configured to insert through the alignment holes and into bushings within the bushing holes.

5. The system of claim 1 , further comprising a heating rod configured to insert through the alignment holes and into bushings in the bushing holes to uniformly heat the bushings.

6. The system of claim 1 , further comprising a removal tool configured to insert through the alignment holes and into bushings in the bushing holes and to interface with the bushings to remove the bushings from the bushing holes.

Assignees

• Sikorsky Aircraft Corp

Inventors

• Smith Scott O
• Lofstrom Sven R
• Petering Philip

Classifications

• Y10T156/1153

  Temperature change for delamination [e.g., heating during delaminating, etc.] · CPC title

• B64F5/40

  Maintaining or repairing aircraft · CPC title

• B25B27/062

  using screws · CPC title

• B25B5/006

  Supporting devices for clamps · CPC title

• B32B38/10

  Removing layers, or parts of layers, mechanically or chemically · CPC title