Metal joiner system, associated methods, and products

Patent metadata

Field	Value
Publication number	US-12434329-B2
Application number	US-202117305351-A
Country	US
Kind code	B2
Filing date	Jul 6, 2021
Priority date	Jul 6, 2020
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

A metal joiner system includes a power source and a metal joiner. The metal joiner includes a cleaning header, a cutting header, a joining header, and a joint finisher, each of which are communicatively coupled to the power source. The cutting header and cleaning header are configured to direct a first laser beam to prepare a joining region, and the joining header is configured to direct a second laser beam to form a joint in the joining region. A method of joining a metal substrates includes forming a joining region in abutting metal substrates, directing the first laser beam onto the joining region in a joint preparation stage, and directing the second laser beam onto the joining region to form a weld. A product of a metal joiner, a weld, has a portion of weld metal removed at the weld start and the weld crater regions.

First claim

That which is claimed:

1. A metal joiner system comprising:
a power source; and
a metal joiner comprising:
a cutting header communicatively coupled to the power source and configured to prepare a joining region for forming a joint, the joining region defined by contacting and abutting edges of a first metal substrate and a second metal substrate, the cutting header configured to prepare the joining region by generating a first laser beam and directing the first laser beam from the metal joiner onto the joining region, the first laser beam configured to cut through an entire thickness of the joining region and form a gap in the joining region through the entire thickness of the joining region; and
a joining header communicatively coupled to the power source and configured to form the joint in the joining region by generating a second laser beam and directing the second laser beam from the metal joiner onto the joining region,
wherein the joining header is connected to the cutting header such that the joining header moves with the cutting head.

2. The metal joiner system of claim 1 , further comprising a controller communicatively coupled to the metal joiner, wherein the controller is configured to control the cutting header such that the first laser beam forms the gap between the edges of the first metal substrate and the second metal substrate, and wherein the gap is less than 0.5 mm.

3. The metal joiner system of claim 1 , wherein the joining region further comprises a top surface and a bottom surface of each of the first metal substrate and the second metal substrate, wherein the metal joiner system further comprises a controller communicatively coupled to the metal joiner, and wherein the controller is configured to control the cutting header such that the first laser beam is directed onto at least one of the top surface or the bottom surface.

4. The metal joiner system of claim 1 , wherein the joining header is configured to direct the second laser beam onto a joint area formed by the faying edges of the first metal substrate and the second metal substrate.

5. The metal joiner system of claim 1 , further comprising a controller communicatively coupled to the metal joiner, and wherein the controller is configured to move the metal joiner along a travel path at a speed of at least 3 meters per minute while at least one of the first laser beam or the second laser beam is directed from the metal joiner.

6. The metal joiner system of claim 1 , wherein at least one characteristic of the second laser beam is different from the first laser beam, and wherein the at least one characteristic comprises at least one of a beam size, a beam intensity, or a beam pattern.

7. The metal joiner system of claim 1 , wherein the metal joiner is movable along a travel path, and wherein the joining header is connected to the cutting header such that the first laser beam is applied on the travel path before the second laser beam is applied on the travel path.

8. The metal joiner system of claim 1 , further comprising at least one of:
a cleaning header configured to direct a cleaning force onto the joining region and apply a suction force onto the joining region; or
a joint finisher configured to remove metal at one or more of a weld start or crater regions of the joint.

9. The metal joiner system of claim 1 , further comprising a cleaning header configured to direct a cleaning force onto the joining region and apply a suction force onto the joining region ahead of the first laser beam in a direction of travel.

10. A metal joiner for a metal joiner system, the metal joiner comprising:
a cutting header configured to prepare a joining region for forming a joint, the joining region defined by contacting and abutting edges of a first metal substrate and a second metal substrate, the cutting header configured to prepare the joining region by generating a first laser beam and directing the first laser beam from the metal joiner onto the joining region, wherein the first laser beam is configured to cut through an entire thickness of the joining region to form a gap in the joining region extending through the entire thickness of the joining region; and
a joining header configured to form the joint in the joining region by generating a second laser beam and directing the second laser beam from the metal joiner onto the joining region,
wherein the joining header is connected to the cutting header such that the joining header moves with the cutting head.

11. The metal joiner of claim 10 , wherein at least one characteristic of the second laser beam is different from the first laser beam, and wherein the at least one characteristic comprises at least one of a beam intensity, a beam size, or a beam pattern.

12. The metal joiner of claim 10 , wherein the metal joiner is movable along a travel path, and wherein the joining header is connected to the cutting header such that the first laser beam is applied on the travel path before the second laser beam is applied on the travel path.

13. The metal joiner of claim 10 , wherein the metal joiner further comprises a joint finisher, wherein the joint finisher is configured to remove a portion of the joint from the joining region.

14. The metal joiner of claim 10 , wherein the metal joiner further comprises a cleaning header configured to direct a cleaning force onto the joining region and apply a suction force onto the joining region ahead of the first laser beam in a direction of travel.

15. A method comprising:
aligning an end edge of a first metal substrate with a start edge of a second metal substrate such that an edge surface of the end edge abuts and is in contact with an edge surface of the start edge, wherein the aligned end edge and start edge define a joining region;
preparing the joining region for joining by directing a first laser beam onto the joining region with a cutting header of a metal joiner and cutting through an entire thickness of the joining region, thereby forming a gap in the joining region extending through the entire thickness of the joining region; and
directing a second laser beam onto the joining region with a joining header of a metal joiner to form a weld, wherein forming the weld joins the first metal substrate with the second metal substrate.

16. The method of claim 15 , wherein a width of the gap is less than 0.5 mm.

17. The method of claim 15 , wherein preparing the joining region comprises at least one of: removing a contaminant from the joining region with a cleaning header; or removing a contaminant from the joining region with the first laser beam.

18. The method of claim 15 , wherein forming the weld comprises forming a weld having a weld thickness that is either:
less than a thickness of the first metal substrate and less than a thickness of the second metal substrate; or
extends beyond a top surface of the first metal substrate and beyond a top surface of the second metal substrate by less than 0.2 mm or 10% of thickness of both the first metal substrate and the second metal substrate.

19. The method of claim 15 , further comprising directing a joint finisher to remove a portion of the weld at one or more of a weld start, a weld crater, or weld defects.

Assignees

• Novelis Inc

Inventors

• Lin Dechao
• Zhu Dewei
• Son Changook
• Haines Kyle
• Nazro Louis Mitchell
• Keim Doug
• Eddie Curtis
• Mathur Devesh
• Gaensbauer David Anthony

Classifications

• B23K26/0892

  Controlling the laser beam travel length · CPC title

• B23K26/06

  Shaping the laser beam, e.g. by masks or multi-focusing · CPC title

• B23K2103/04

  Steel {or steel} alloys · CPC title

• B23K2103/10

  Aluminium or alloys thereof · CPC title

• B23K26/361

  for deburring or mechanical trimming (B23K26/351 takes precedence) · CPC title