Systems and methods for providing weld quality confidence

Patent metadata

Field	Value
Publication number	US-10661373-B2
Application number	US-201615264013-A
Country	US
Kind code	B2
Filing date	Sep 13, 2016
Priority date	Sep 14, 2015
Publication date	May 26, 2020
Grant date	May 26, 2020

Abstract

Systems and methods for welding are described. The welding system can include, for example, a welding power source, a welding torch, and a computer. The computer and the welding torch can be operatively coupled to the power source. A first weld is performed and its signature is saved by the computer. It is considered a high quality weld and is selected as a weld reference. A second weld is performed and its signature is saved by the computer. The computer then computes a single weld confidence result for the second weld based on a comparison between the signature data of the second weld and the signature data of the reference weld. A weld fault condition is triggered based on the single weld confidence result which causes the welding system to stop or to modify the welding operation, and/or which causes the welding system to send out communications relating to the triggering of the weld fault condition.

First claim

What is claimed is:

1. A welding system, comprising:
one or more non-transitory memories; and
one or more processors operatively coupled to the one or more non-transitory memories, wherein the one or more processors are configured to:
save a first weld signature associated with a first performed weld,
select the first weld signature as a first reference weld,
save a second weld signature from a second performed weld,
compare the second weld signature associated with the second performed weld with the first reference weld, wherein at least one of the first weld signature or the second weld signature includes a voltage signature, and
determine a single weld confidence result for the second performed weld based on the comparison.

2. The welding system according to claim 1 , wherein the one or more processors are configured to trigger a weld fault condition based on the single weld confidence result.

3. The welding system according to claim 2 , wherein the one or more processors are configured to stop or to modify the welding by the welding system when the weld fault condition is triggered.

4. The welding system according to claim 1 , wherein the one or more processors are configured to trigger an alarm, to send an alarm message, or to send a text communication when the weld fault condition is triggered.

5. The welding system according to claim 1 , wherein the one or more processors are configured to identify which individual features of the second weld signature are causing a low single weld confidence result.

6. The welding system according to claim 5 , wherein the one or more processors are configured to provide possible problems associated with the identified individual features of the second weld signature that are causing the low single weld confidence result, and wherein the one or more processors are configured to provide solutions associated with the possible problems.

7. The welding system according to claim 1 , wherein the voltage signature comprises a profile of voltage over time during the first performed weld or the second performed weld.

8. The welding system according to claim 1 , wherein the one or more processors are configured to store, in a buffer or a non-transitory memory, the first weld signature as the reference signature.

9. The welding system according to claim 1 , further comprising an interface configured to receive an input to select the first weld signature as the reference signature.

10. The welding system according to claim 1 , wherein at least one of the first weld signature or the second weld signature include a current signature.

11. The welding system according to claim 10 , wherein the current signature comprises a profile of current over time during the first performed weld or the second performed weld.

12. The welding system according to claim 1 , wherein the single weld confidence result comprises an average of multiple weld confidence results.

13. A welding system, comprising:
one or more non-transitory memories; and
one or more processors operatively coupled to the one or more non-transitory memories, wherein the one or more processors are configured to:
save a first weld signature associated with a first performed weld,
select the first weld signature as a first reference weld,
save a second weld signature from a second performed weld,
compare the second weld signature associated with the second performed weld with the first reference weld, wherein at least one of the first weld signature or the second weld signature include a current signature, and
determine a single weld confidence result for the second performed weld based on the comparison.

14. The welding system according to claim 13 , wherein the current signature comprises a profile of current over time during the first performed weld or the second performed weld.

15. The welding system according to claim 13 , wherein at least one of the first weld signature or the second weld signature includes a voltage signature.

16. The welding system according to claim 15 , wherein the voltage signature comprises a profile of voltage over time during the first performed weld or the second performed weld.

17. The welding system according to claim 13 , wherein the single weld confidence result comprises an average of multiple weld confidence results.

18. A welding system, comprising:
one or more non-transitory memories; and
one or more processors operatively coupled to the one or more non-transitory memories, wherein the one or more processors are configured to:
save a first weld signature associated with a first performed weld,
select the first weld signature as a first reference weld,
save a second weld signature from a second performed weld,
compare the second weld signature associated with the second performed weld with the first reference weld, and
determine a single weld confidence result for the second performed weld based on the comparison, wherein the single weld confidence result comprises an average of multiple weld confidence results.

19. The welding system according to claim 18 , wherein at least one of the first weld signature or the second weld signature include a current signature.

20. The welding system according to claim 19 , wherein the current signature comprises a profile of current over time during the first performed weld or the second performed weld.

21. The welding system according to claim 18 , wherein at least one of the first weld signature or the second weld signature includes a voltage signature.

22. The welding system according to claim 21 , wherein the voltage signature comprises a profile of voltage over time during the first performed weld or the second performed weld.

Assignees

• Illinois Tool Works

Inventors

• Falde Leland D
• Ivkovich Stephen P
• Romano Vincent N

Classifications

• B23K9/0953 Primary

  using computing means · CPC title

• B23K31/125

  Weld quality monitoring · CPC title

• G08B5/223

  using wireless transmission · CPC title

• B23K9/1062

  with computing means · CPC title

• B23K9/095 Primary

  Monitoring or automatic control of welding parameters · CPC title