System and method for automated laser ablation

Patent metadata

Field	Value
Publication number	US-11724335-B2
Application number	US-202217668007-A
Country	US
Kind code	B2
Filing date	Feb 9, 2022
Priority date	Jan 31, 2019
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

A system and method for automated laser ablation includes an end effector for performing laser ablation at a location with restricted access. The systems and methods of the present disclosure specifically provide for a miniature laser end effector which may be inserted through a port or bore in order to ablate the surface of an internal component of a complex assembly. In several embodiments of the present subject matter, the end effector is mounted on a machine and coupled to a laser system.

First claim

What is claimed is:

1. A repair system for directing laser energy to a workpiece, the repair system comprising:
a machine having an end effector;
a laser system coupled to the end effector;
wherein the end effector comprises:
an effector housing having a body extending lengthwise between a proximal end and a distal end opposite thereof, wherein the body receives a laser beam,
a dynamic beam diverter contained within the effector housing,
a focal lens to direct the laser beam, and
a mirror contained within the effector housing, and wherein the mirror is angled to direct the laser beam through an aperture in the effector housing; and

a pressurized gas source coupled to the end effector via a gas line and coupled to a first controller, wherein a plurality of vanes are oriented to convert an energy from a portion of a pressurized gas into a rotational speed of 9,000 rotations per minute to 20,000 rotations per minute to rotate a rotor.

2. The repair system of claim 1 , wherein the mirror is movably coupled to the effector housing, and wherein the end effector further comprises a mirror actuator coupled to the mirror to move the mirror between a first position and at least a second position.

3. The repair system of claim 1 , wherein the dynamic beam diverter comprises:
a lens held in a rotational bearing; and
the rotor coupled to the rotational bearing.

4. The repair system of claim 1 , wherein the effector housing further defines the aperture, the repair system further comprising:
a plurality of gas jet ports contained within the effector housing, coupled to the gas line, and aligned with the aperture, wherein an at least one gas jet port of the plurality of gas jet ports is oriented to shield the mirror with a gas jet.

5. The repair system of claim 4 , further comprising:
a port actuator coupled to the at least one gas jet port of the plurality of gas jet ports, wherein the port actuator directs a flow of the gas jet.

6. The repair system of claim 4 , further comprising:
a suction apparatus coupled to the end effector via a suction line and coupled to the first controller; and
an intake operably coupled to the aperture and the suction line.

7. The repair system of claim 1 , wherein the laser system further comprises a second controller, wherein the laser beam has a peak power range of 500 kW to 2 MW.

8. The repair system of claim 1 , wherein the end effector further comprises a distance measuring apparatus coupled to the end effector and orientated to determine a working distance between the effector housing and the workpiece.

9. The repair system of claim 1 , wherein the end effector is a first end effector, the repair system further comprising a second end effector configured to operate in tandem with the first end effector.

10. A method for directing laser energy to a workpiece at a location with restricted access, the method comprising:
positioning an end effector a working distance from the workpiece, the end effector being coupled to a machine having, the end effector comprising:
an effector housing having a body extending lengthwise between a proximal end and a distal end opposite thereof, wherein the body receives a laser beam,
a dynamic beam diverter contained within the effector housing, and
a focal lens contained within the effector housing,

activating a laser system to transmit the laser beam to the body of the end effector, wherein the laser system is operably coupled to the end effector;
diverting the laser beam from an axial path by employing the dynamic beam diverter;
focusing the laser beam; and
directing the laser beam onto the workpiece using the focal lens,
wherein the end effector is a first end effector, and wherein a second end effector operates in tandem with the first end effector.

11. The method of claim 10 , wherein the end effector further comprises a mirror contained within the effector housing.

12. The method of claim 11 , wherein the mirror is movably coupled to the effector housing, and wherein the end effector further comprises a mirror actuator coupled to the mirror to move the mirror between a first position and at least a second position.

13. The method of claim 12 , further comprising:
coupling a pressurized gas source to the end effector via a gas line and to a first controller; and
orienting a plurality of vanes such that an energy from a portion of a pressurized gas is converted into a rotational speed of 9,000 rotations per minute to 20,000 rotations per minute to rotate a rotor.

14. The method of claim 11 , wherein the dynamic beam diverter comprises:
a lens held in a rotational bearing; and
a rotor coupled to the rotational bearing.

15. The method of claim 10 , wherein the effector housing has a maximal width of 10 mm to 21 mm and a length of 25 mm to 75 mm.

16. The method of claim 10 , wherein the laser system further comprises a second controller, wherein the laser beam has a peak power range of 500 kW to 2 MW.

17. A repair system for directing laser energy to a workpiece, the system comprising:
a machine having an end effector; and
a laser system coupled to the end effector;
wherein the end effector comprises:
an effector housing having a body extending lengthwise between a proximal end and a distal end opposite thereof, wherein the body receives a laser beam,
a dynamic beam diverter contained within the effector housing,
a focal lens to direct the laser beam, and
wherein the end effector is a first end effector, the repair system further comprising a second end effector configured to operate in tandem with the first end effector.

Assignees

• Gen Electric

Inventors

• Diwinsky David Scott
• Fullington Michael Dean
• Roberts Herbert Chidsey
• Hay Jacob Cole
• Ream Stanley Louis
• Walters Craig Thompson

Classifications

• B23K26/0643 Primary

  comprising mirrors · CPC title

• B23K26/0648

  comprising lenses · CPC title

• B23K26/1436

  for pressure control · CPC title

• B23K26/1438

  for directional control · CPC title

• B23K26/00 Primary

  Working by laser beam, e.g. welding, cutting or boring · CPC title