IP Library › Granted Patent US 12,358,174
Granted Patent B2
US 12,358,174 · App. 17/901,000 · Granted Jul 15, 2025

Ultrasonic pre-surface and post-surface processing for laser brazing and laser welding

Inventors: Guangze Li (Novi, MI); Hui-ping Wang (Troy, MI); Michael G. Poss (Rochester Hills, MI); Blair E. Carlson (Ann Arbor, MI); Ping Guo (Northfield, IL)
Assignees: GM GLOBAL TECHNOLOGY OPERATIONS LLC; Northwestern University
B26D7/086B23K1/20B23K3/08B23K26/21B23K26/702B26D3/28
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Quick Facts
Patent No.
US 12,358,174
App. No.
17/901,000
Granted
Jul 15, 2025
Kind
B2
Abstract

A laser brazing and welding system is disclosed and includes: a laser; a first cutting tool including a first cutting tip; and a control module. The control module is configured to control the laser to laser braze or laser weld two parts; and control ultrasonic vibration of the first cutting tip to remove one or more layers from at least one of the two parts prior to or subsequent to the laser brazing or laser welding of the two parts.

Claims (47)

1. A cutting, laser brazing and welding system comprising:

a laser;

a first cutting tool comprising a first cutting tip; and

a control module configured to

control the laser to laser braze or laser weld two parts, and

control ultrasonic vibration of the first cutting tip to remove one or more layers from at least one of the two parts prior to or subsequent to the laser brazing or laser welding of the two parts.

2. The cutting, laser brazing and welding system of claim 1 , wherein the first cutting tool further comprises a plurality of transducers configured to move the first cutting tip,

wherein the control module is configured to control supply of power to the plurality of transducers to control the ultrasonic vibration of the first cutting tip.

3. The cutting, laser brazing and welding system of claim 2 , wherein the plurality of transducers are piezoelectric transducers.

4. The cutting, laser brazing and welding system of claim 1 , wherein:

the two parts comprise a first part and a second part;

the first cutting tip is a dual cutting tip configured to cut the two parts concurrently; and

the control module is configured to control the ultrasonic vibration of the first cutting tip to concurrently remove a first layer from the first part and a second layer from the second part prior to or subsequent to the laser brazing or laser welding of the two parts, the one or more layers comprising the first layer and the second layer.

5. The cutting, laser brazing and welding system of claim 1 , further comprising at least one robot,

wherein the control module is configured to control the at least one robot to control position of the first cutting tool and the laser relative to the two parts during removal of the one or more layers from the at least one of the two parts prior and during the laser brazing or laser welding of the two parts.

6. The cutting, laser brazing and welding system of claim 1 , further comprising a second cutting tool comprising a second cutting tip,

wherein the control module is configured to i) control the ultrasonic vibration of the first cutting tip to remove the one or more layers from the at least one of the two parts prior to the laser brazing or laser welding of the two parts; and ii) control ultrasonic vibration of the second cutting tip to remove a second one or more layers from the at least one of the two parts subsequent to the laser brazing or laser welding of the two parts.

7. The cutting, laser brazing and welding system of claim 6 , wherein:

the first cutting tool further comprises a first plurality of transducers configured to move the first cutting tip; and

the second cutting tool further comprises a second plurality of transducers configured to move the second cutting tip,

wherein the control module is configured to control supply of power to i) the first plurality of transducers to control the ultrasonic vibration of the first cutting tip, and ii) the second plurality of transducers to control the ultrasonic vibration of the second cutting tip.

8. The cutting, laser brazing and welding system of claim 7 , wherein the first plurality of transducers and the second plurality of transducers are piezoelectric transducers.

9. The cutting, laser brazing and welding system of claim 6 , wherein:

the first cutting tip is a dual cutting tip configured to cut the two parts concurrently, the two parts comprising a first part and a second part;

the second cutting tip is a dual cutting tip configured to cut the two parts concurrently; and

the control module is configured to i) control the ultrasonic vibration of the first cutting tip to perform the cutting of the two parts to remove a first layer from the first part and a second layer from the second part prior to the laser brazing or laser welding of the two parts, the one or more layers comprising the first layer and the second layer and ii) control the ultrasonic vibration of the second cutting tip to perform the cutting of the two parts to remove another layer from each of the two parts subsequent to the laser brazing or laser welding of the two parts.

10. The cutting, laser brazing and welding system of claim 1 , further comprising:

a nozzle; and

a pump connected to the nozzle,

wherein the control module is configured to control the pump to draw or blow particles formed during the removal of the one or more layers from the at least one of the two parts.

11. A cutting, laser brazing and welding system method comprising:

arranging two parts of an automotive vehicle to be joined relative to each other and relative to a cutting, laser brazing and welding assembly, the cutting, laser brazing and welding assembly comprising a laser and a first cutting tool, the first cutting tool comprises a first cutting tip;

controlling the laser to laser braze or laser weld two parts; and

controlling ultrasonic vibration of the first cutting tip to remove one or more layers from at least one of the two parts prior to or subsequent to the laser brazing or laser welding of the two parts.

12. The cutting, laser brazing and welding method of claim 11 , further comprising controlling supply of power to a plurality of transducers of the first cutting tool to control the ultrasonic vibration of the first cutting tip.

13. The cutting, laser brazing and welding method of claim 12 , wherein the plurality of transducers are piezoelectric transducers.

14. The cutting, laser brazing and welding method of claim 11 , further comprising controlling the ultrasonic vibration of the first cutting tip to concurrently remove a first layer from a first part and a second layer from a second part prior to or subsequent to the laser brazing or laser welding of the two parts, the one or more layers comprising the first layer and the second layer, the two parts comprising the first part and the second part, and the first cutting tip is a dual cutting tip configured to cut the two parts concurrently.

15. The cutting, laser brazing and welding method of claim 11 , further comprising controlling position of the first cutting tool and the laser relative to the two parts during removal of the one or more layers from the at least one of the two parts prior and during the laser brazing or laser welding of the two parts.

16. The cutting, laser brazing and welding method of claim 11 , further comprising:

controlling the ultrasonic vibration of the first cutting tip to remove the one or more layers from the at least one of the two parts prior to the laser brazing or laser welding of the two parts; and

controlling ultrasonic vibration of a second cutting tip to remove a second one or more layers from the at least one of the two parts subsequent to the laser brazing or laser welding of the two parts, the cutting, laser brazing and welding assembly comprising a second cutting tool comprising the second cutting tip.

17. The cutting, laser brazing and welding method of claim 16 , further comprising controlling supply of power to i) a first plurality of transducers to control the ultrasonic vibration of the first cutting tip, and ii) a second plurality of transducers to control the ultrasonic vibration of the second cutting tip, the first cutting tool comprising the first plurality of transducers, and the second cutting tool comprising the second plurality of transducers.

18. The cutting, laser brazing and welding method of claim 17 , wherein the first plurality of transducers and the second plurality of transducers are piezoelectric transducers.

19. The cutting, laser brazing and welding method of claim 16 , further comprising:

controlling the ultrasonic vibration of the first cutting tip to perform the cutting of the two parts to remove a first layer from a first part and a second layer from a second part prior to the laser brazing or laser welding of the two parts, the one or more layers comprising the first layer and the second layer, the first cutting tip is a dual cutting tip configured to cut the two parts concurrently, and the two parts comprise the first part and the second part; and

controlling the ultrasonic vibration of the second cutting tip to perform the cutting of the two parts to remove another layer from each of the two parts subsequent to the laser brazing or laser welding of the two parts, the second cutting tip is a dual cutting tip configured to cut the two parts concurrently.

20. The cutting, laser brazing and welding method of claim 11 , further comprising controlling a pump to draw or blow particles formed during the removal of the one or more layers from the at least one of the two parts.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 15, 2022
From: GUO, PING
To: NORTHWESTERN UNIVERSITY
Reel/Frame 061767/0566 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 1, 2022
From: LI, GUANGZE; WANG, HUI-PING; POSS, MICHAEL G.; CARLSON, BLAIR E.
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 060963/0465 →
Continuity (1)
Related Publication 20240075645A1 · Mar 7, 2024
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