Aerofoil component handling tool

Patent metadata

Field	Value
Publication number	US-9512722-B2
Application number	US-201414330620-A
Country	US
Kind code	B2
Filing date	Jul 14, 2014
Priority date	Jul 30, 2013
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

A handheld tool facilitates the removal of an aerofoil from an array of aerofoils for an axial flow machine includes a body portion, and first and second jaw members depending from the body portion. The first jaw member is shaped to be insertable between a first aerofoil and an adjacent aerofoil in the array so as to contact a first surface of the first aerofoil. The position of the first and/or second jaw member is adjustable to selectively grip the aerofoil in use. The second jaw member is adapted to contact a further portion as a trailing edge of the first aerofoil. The tool may allow for manual levering and/or impact forces to be applied to the aerofoil. A method of removal of aerofoils is also provided, involving a sequence of manual operations using the tool. The aerofoil array may be a stator vane array for a gas turbine engine.

First claim

The invention claimed is:

1. A handheld tool adapted to facilitate the removal of an aerofoil from an array of aerofoils for an axial flow machine, the tool comprising:
a body portion; and
first and second jaw members depending from the body portion, wherein
the first jaw member is shaped to be insertable between a first aerofoil and an adjacent aerofoil in the array so as to contact a first portion of the first aerofoil, and the second jaw member is adapted to contact a further portion of the first aerofoil,
the position of at least one of the first jaw member and the second jaw member being adjustable to selectively grip the first aerofoil therebetween in use,
the body portion comprises a handle spaced from the first and second jaw members, the handle being oriented to allow application of a tensile force in the body portion between the handle and the first jaw member, and
the handle is a first handle and the tool comprises a second handle, the second handle being adjustable relative to the body protion for actuation of the first or second jaw member.

2. The handheld tool according to claim 1 , wherein
the first jaw member is provided towards a first end of the body portion and is fixed relative to the body portion, the position of the second jaw member being adjustable in a direction between the first end and an opposing end of the body portion.

3. The handheld tool according to claim 1 , wherein
the first jaw member has a height that is greater than or substantially equal to the chord length of the first aerofoil.

4. The handheld tool according to claim 1 , wherein
the second jaw member is shorter in height than the first jaw member.

5. The handheld tool according to claim 1 , wherein
the first jaw member and second jaw member are substantially parallel in orientation.

6. The handheld tool according to claim 1 , wherein
the second jaw member is moveable towards a pressure side of the first aerofoil and the further portion of the first aerofoil is an edge of the aerofoil.

7. The handheld tool according to claim 1 , wherein
the handle is attached to the body portion at two spaced locations and the handle extends in a direction that is substantially parallel to at least one of the direction of spacing and the direction of relative movement between the first and second jaw members.

8. The handheld tool according to claim 1 , further comprising
a releasable lock or latch for selectively fixing the relative spacing between the first and second jaw members.

9. The handheld tool according to claim 1 , wherein
the body portion extends from the first to the second jaw member and beyond the second jaw member in order to provide a lever formation for application of torque to an aerofoil maintained between the first and second jaw members.

10. The handheld tool according to claim 1 , wherein
the body portion comprises an upstanding impact formation for transfer of impact forces to at least one of the first and second jaw members in use.

11. The handheld tool according to claim 1 , wherein
any, any combination, or all of the body portion, the first jaw member and the second jaw member are formed of a polymer material.

12. A method of removing aerofoils from an array of aerofoils for an axial flow machine, the method comprising the steps of:
i. inserting a first jaw member of a handheld tool between a first aerofoil and an adjacent aerofoil in the array, such that the first jaw member contacts a first portion of the first aerofoil, and adapting a second jaw member to contact a further portion of the first aerofoil, the first and second jaw members depending from a body portion of the handheld tool;
ii. adjusting the position of at least one of the first jaw member and the second jaw member so as to selectively grip the first aerofoil between the first and second jaw members, wherein the body portion comprises a handle spaced from the first and second jaw members, and the handle is a first handle and the tool comprises a second handle, the second handle being adjustable relative to the body portion for actuation of the first or second jaw member; and
iii. applying a tensile force in the body portion between the handle and the first jaw member in order to remove the first aerofoil from its position in the array.

13. The method according to claim 12 , further comprising
applying a torque force to the first aerofoil via the tool.

14. The method according to claim 12 , further comprising
impacting a portion of the tool to dislodge the first aerofoil from the array.

Assignees

• Rolls Royce Plc

Inventors

• Bitondo Donato
• Bartlam Mark
• Leon De Paz Marcel Ernesto
• Macrae Peter

Classifications

• F01D25/285

  Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures · CPC title

• F05D2260/83

  Testing, e.g. methods, components or tools therefor · CPC title

• Y10T29/49318

  Repairing or disassembling · CPC title

• B25B5/14

  Clamps for work of special profile {(using chains or strips B25B1/205)} · CPC title

• B25B5/02

  with sliding jaws · CPC title