Scarf repair apparatus, system, and method

Patent metadata

Field	Value
Publication number	US-11460830-B2
Application number	US-202016830841-A
Country	US
Kind code	B2
Filing date	Mar 26, 2020
Priority date	Mar 26, 2020
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

Disclosed herein is a duplicator assembly for forming a first void, which can be layered, in a laminated material of a part that matches a second void in a scarf repair guide. The duplicator assembly comprises an arm that comprises a first end portion and a second end portion. The first end portion is spaced apart from the second end portion. The duplication assembly also comprises a probe that is fixed to the first end portion of the arm and configured to trace the second void in the scarf repair guide. The duplication assembly further comprises a milling tool that is fixed to the second end portion of the arm such that the milling tool is co-movably coupled with the probe via the arm.

First claim

What is claimed:

1. A duplicator assembly for forming a first void in a laminated material of a part that matches a second void in a scarf repair guide, where the scarf repair guide comprises a physical guide based on a digital scarf repair model, the duplicator assembly comprising:
an arm, comprising a first end portion and a second end portion, wherein the first end portion is spaced apart from the second end portion;
a probe, fixed to the first end portion of the arm and configured to trace the second void in the scarf repair guide; and
a milling tool, fixed to the second end portion of the arm such that the milling tool is co-movably coupled with the probe via the arm.

2. The duplicator assembly according to claim 1 , further comprising a handle fixed to the first end portion, wherein the handle is co-movably coupled with the probe.

3. The duplicator assembly according to claim 1 , wherein:
the probe is movable relative to the arm in response to a contour change of the second void in the scarf repair guide;
the milling tool is pivotably coupled with the second end portion; and
the milling tool pivots relative to the arm in response to the probe moving relative to the arm.

4. The duplicator assembly according to claim 1 , further comprising an articulatable arm coupled to the arm, wherein the articulatable arm is manually movable relative to the part and the scarf repair guide to manually move the arm relative to the part and the scarf repair guide.

5. The duplicator assembly according to claim 4 , wherein the articulatable arm is manually movable about at least three axes of rotation such that the probe and the milling tool are manually movable about the at least three axes of rotation.

6. The duplicator assembly according to claim 4 , wherein:
the arm, the probe, and the milling tool form an arm assembly; and
the arm assembly is selectively releasably coupled to the articulatable arm.

7. A system for forming a first void in a laminated material of a part to repair the part, the system comprising:
a scarf repair guide, comprising a physical guide based on a digital scarf repair model, non-movably fixed relative to the part and comprising a second void, wherein the first void matches the second void; and
an arm assembly, comprising:
an arm, comprising a first end portion and a second end portion, wherein the first end portion is spaced apart from the second end portion;
a probe, fixed to the first end portion of the arm and configured to trace the second void in the scarf repair guide; and
a milling tool, fixed to the second end portion of the arm such that the milling tool is co-movably coupled with the probe via the arm, wherein the milling tool is configured to form the first void in the part to match the second void in the scarf repair guide as the probe traces the second void in the scarf repair guide.

8. The system according to claim 7 , further comprising:
a scarf repair modeling module, configured to generate a digital scarf repair model based at least partially on data corresponding with an abnormality in the part; and
a scarf repair guide forming tool, configured to make the scarf repair guide based on the digital scarf repair model.

9. The system according to claim 8 , wherein the scarf repair guide forming tool comprises an additive manufacturing machine.

10. The system according to claim 8 , further comprising a defect modeling module, configured to generate a computer-aided design (CAD) model of at least the abnormality in the part based on the data corresponding with the abnormality in the part, wherein the scarf repair modeling module is further configured to generate the digital scarf repair model based at least partially on the CAD model.

11. The system according to claim 10 , wherein the scarf repair modeling module is further configured to generate the digital scarf repair model according to scarf repair parameters defined prior to generating the CAD model of at least the abnormality in the part.

12. The system according to claim 10 , further comprising a scanning tool, configured to scan the part to generate the data corresponding with the abnormality in the part.

13. The system according to claim 7 , wherein:
the arm assembly is further configured to form the first void in a surface of the part; and
the scarf repair guide is non-movably attached to the surface of the part.

14. A method of making a scarf repair guide for repairing a laminated material of a part, the method comprising:
scanning at least a portion of the part containing an abnormality;
generating data corresponding with the abnormality in response to scanning at least the portion of the part containing the abnormality;
generating a digital scarf repair model based at least partially on the data corresponding with the abnormality; and
making the scarf repair guide, comprising a physical guide, based on the digital scarf repair model.

15. The method according to claim 14 , further comprising generating a computer-aided design (CAD) model of at least the abnormality in the part based on the data corresponding with the abnormality, and wherein the digital scarf repair model is generated based on the CAD model.

16. The method according to claim 14 , wherein the data corresponding with the abnormality comprises an orientation of the part, a location of the abnormality on the part, and a shape of the abnormality.

17. A method of repairing a laminated material of a part, the method comprising:
tracing a second void, of a scarf repair guide non-movably fixed relative to the part, with a probe, wherein the scarf repair guide is based on a digital scarf repair model generated by a scarf repair modeling module configured to generate the digital scarf repair model based at least partially on data corresponding with an abnormality in the part;
co-moving a milling tool with the probe as the probe traces the second void; and
removing the laminated material of the part with the milling tool as the milling tool co-moves with the probe to form a first void in the laminated material of the part that matches the second void in the scarf repair guide.

18. The method according to claim 17 , wherein:
the step of tracing the second void with the probe comprises moving the probe according to any one of at least three degrees of freedom; and
the step of co-moving the milling tool comprises movement of the milling tool according to any one of the at least three degrees of freedom.

19. The method according to claim 17 , wherein:
the step of tracing the second void with the probe comprises pivoting the probe in response to a contour change of the second void in the scarf repair guide; and
the step of co-moving the milling tool comprises co-pivoting the milling tool with the probe.

20. The method according to claim 17 , wherein the step of tracing the second void with the probe comprises manually moving the probe along the second void.

Assignees

• Boeing Co

Inventors

• Ridgeway Larry D
• Henderson James H
• Lazar Michael A
• Morse Steve J
• Hengy David J

Classifications

• G05B19/4099 Primary

  Surface or curve machining, making three-dimensional [3D] objects, e.g. desktop manufacturing · CPC title

• G05B2219/37355

  Cutting, milling, machining force · CPC title

• B29C2073/264

  for cutting out or grooving the area to be repaired · CPC title

• B23C2215/04

  Aircraft components · CPC title

• B23C3/16

  Working surfaces curved in two directions · CPC title