Method for Producing a Laser Weld Seam Between Components by Use of a Spherical or Sphere-Like Element, and Corresponding Component Connection

Patent metadata

Field	Value
Publication number	US-2016297031-A1
Application number	US-201615187881-A
Country	US
Kind code	A1
Filing date	Jun 21, 2016
Priority date	Feb 13, 2014
Publication date	Oct 13, 2016
Grant date	—

Abstract

A method is provided for producing a weld seam on or at a first component, or in the region of a first component, from which at least one spherical or sphere-like element projects. The position of the at least one spherical or sphere-like element is detected using an optoelectronic detection device and corresponding position data are generated. The weld seam is produced contact free using an electronically-controlled laser welding device that is arranged at a distance from the first component and said at least one spherical or sphere-like element. The laser welding device is controlled on the basis of, or using, the position data of the spherical or sphere-like element.

First claim

What is claimed is:

1 . A method for producing a weld seam on or at a first component or in a region of the first component, at least one spherical element projecting from the first component, the method comprising the acts of:
detecting, via an optoelectronic detection apparatus, a position of the at least one spherical element; producing position data corresponding to the position of the at least one spherical element; producing a weld seam in a contactless manner via an electronically controlled laser welding device, the laser welding device being arranged at a distance from the first component and the at least one spherical element and being controlled based on, or using, the position data of the spherical element.

2 . The method according to claim 1 , wherein the optoelectronic detection apparatus comprises a light source, a sensor apparatus, and an optical unit, the method detecting the position of the at least one spherical element further comprises the act of:
projecting light rays produced by the light source via the optical unit onto a surface of the at least one spherical element, wherein the projected light rays are reflected there and guided to the sensor apparatus via the optical unit.

3 . The method according to claim 1 , wherein the act of detecting the position of the at least one spherical element further comprises the act of:
projecting a light ray produced by the optoelectronic detection apparatus perpendicularly onto a surface point of the at least one spherical element, the projected light ray being totally reflected at the surface point and being guided to the sensor apparatus via an optical unit.

4 . The method according to claim 2 , wherein the act of detecting the position of the at least one spherical element further comprises the act of:
projecting a light ray produced by the optoelectronic detection apparatus perpendicularly onto a surface point of the at least one spherical element, the projected light ray being totally reflected at the surface point and being guided to the sensor apparatus via an optical unit.

5 . The method according to claim 1 , wherein a light beam is produced via the optoelectronic detection apparatus and the detection of the position of the at least one spherical element is carried out via a sensor apparatus and evaluation electronics as a function of which light ray of the light beam is reflected onto itself via the at least one spherical element.

6 . The method according to claim 2 , wherein the sensor apparatus comprises a sensor field formed of a plurality of individual sensors, and
wherein a light ray totally reflected by the at least one spherical element is identified by virtue of a position of a brightest region or spot detected in the sensor field.

7 . The method according to claim 5 , wherein a vector profile of the light ray reflected onto itself is established via an individual sensor detecting the light ray reflected onto itself.

8 . The method according to claim 7 , wherein the position data of the at least one spherical element is derived or produced from the vector profile of the light ray reflected onto itself.

9 . The method according to claim 8 , wherein the position of the at least one spherical element is detected from the vector profile of the light ray reflected onto itself and a predetermined or measured diameter of the at least one spherical element.

10 . The method according to claim 7 , wherein the position of the at least one spherical element is detected from the vector profile of the light ray reflected onto itself and a predetermined or measured diameter of the at least one spherical element.

11 . The method according to claim 1 , wherein the second component has a through-hole, the second component being placed onto the first component such that the at least one spherical element projecting from the first component protrudes through the through-hole and projects out of the second component on a side of the second component facing away from the first component.

12 . The method according to claim 11 , wherein the act of producing the weld seam welds the first and second components to one another.

13 . The method according to claim 1 , wherein the weld seam is produced directly in the region of the spherical element.

14 . The method according to claim 1 , wherein the weld seam is produced such that the weld seam encloses the spherical element in a ring manner.

15 . A component connection connecting first and second components, the component connection being produced according to claim 1 .

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Van Niekerk Johann
• Langrieger Hans

Classifications

• B23K26/032 Primary

  using optical means · CPC title

• B23K26/26

  of rectilinear seams · CPC title

• F16B5/0657

  at least one of the plates providing a raised structure, e.g. of the doghouse type, for connection with the clamps or clips of the other plate · CPC title

• F16B5/0642

  the plates being arranged one on top of the other and in full close contact with each other · CPC title

• B23K26/04

  Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light · CPC title