Tool and method for scarfing a rotor blade segment

Patent metadata

Field	Value
Publication number	US-9683548-B2
Application number	US-201313802954-A
Country	US
Kind code	B2
Filing date	Mar 14, 2013
Priority date	Mar 14, 2013
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

Tools and methods are provided for scarfing rotor blade segments. A rotor blade segment includes a pressure side and a suction side. A tool includes a first guide configured for mounting on one of the pressure side or the suction side, the first guide including a first curved rail and a second curved rail spaced from the first curved rail. The tool further includes a second guide movably coupled to the first guide at a scarf angle, the second guide including a guide rail extending between and movable along the first curved rail and the second curved rail. The tool further includes a cutting device movably coupled to the second guide, the cutting device movable along the guide rail and operable to remove material from the one of the pressure side or the suction side.

First claim

What is claimed is:

1. A tool for scarfing a rotor blade segment, the rotor blade segment comprising a pressure side, a suction side, a leading edge, and a trailing edge each extending between a first end and a second end, the tool comprising:
a first guide configured for mounting on one of the pressure side or the suction side of the rotor blade adjacent to a cutaway portion thereof, the first guide comprising a first curved rail mounted to a single first mounting component secured between the ends of the first curved rail and a second curved rail spaced from the first curved rail, the first mounting component being secured within the cutaway portion of the rotor blade, the first curved rail and the second curved rail each being rigid and having a curvature that generally corresponds to a curvature of the one of the pressure side or the suction side, the second curved rail being offset from the first curved rail such that a distance between the first and second curved rails and a difference between top surfaces of the first and second curved rails defines a scarf angle;
a second guide movably coupled to the first guide at the scarf angle of between approximately 1 degree and approximately 5 degrees, the second guide comprising a pair of parallel guide rails spaced apart along a chord-wise axis of the rotor blade segment, the pair of parallel guide rails extending between and movable along the first curved rail and the second curved rail; and
a cutting device movably coupled to the second guide, the cutting device slidable between the pair of parallel guide rails during operation of the cutting device and operable during movement along the guide rail to remove material from the one of the pressure side or the suction side.

2. The tool of claim 1 , wherein the first curved rail and the second curved rail are generally parallel, and wherein the guide rail is generally transverse to the first curved rail and the second curved rail.

3. The tool of claim 1 , wherein the first curved rail and the second curved rail are configured for orienting along the chord-wise axis of the rotor blade segment.

4. The tool of claim 1 , wherein the second guide is configured for movement along the chord-wise axis of the rotor blade segment.

5. The tool of claim 1 , wherein the cutting device is configured for movement along a span-wise axis of the rotor blade segment.

6. The tool of claim 1 , wherein the first guide is configured for mounting on an outer surface of the pressure side.

7. The tool of claim 1 , wherein the first guide is configured for mounting on an inner surface of the suction side.

8. The tool of claim 1 , wherein the rotor blade further comprises a spar cap coupled to the one of the pressure side or the suction side, and wherein the first guide is positioned such that the cutting device is operable to remove material from a portion of the one of the pressure side or the suction side that is coupled to the spar cap.

9. The tool of claim 1 , wherein the cutting device comprises a dado blade.

10. The tool of claim 1 , wherein the second curved rail is mounted to a second mounting component, the second mounting component being secured to one of the pressure side or the suction side.

Assignees

• Gen Electric

Inventors

• Johnson Stephen Bertram
• Olson Steven Haines
• Stewart Edward Mcbeth

Classifications

• Y10T409/30644

  to guide tool to move in arcuate path · CPC title

• B29C66/721

  Fibre-reinforced materials (B29C66/729 takes precedence) · CPC title

• F03D13/10

  Assembly of wind motors; Arrangements for erecting wind motors · CPC title

• B23C3/10

  Relieving by milling · CPC title

• F05B2230/50

  Building or constructing in particular ways · CPC title