Laser system processing unit connection

Patent metadata

Field	Value
Publication number	US-9446482-B2
Application number	US-201414266960-A
Country	US
Kind code	B2
Filing date	May 1, 2014
Priority date	Nov 2, 2011
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

A laser system includes one or more lasers and one or more laser processing units each connected to a respective one of the one or more lasers by a laser light cable and a data line associated uniquely with the laser light cable. Each laser processing unit includes a safety device for monitoring the laser processing unit and an interface for the data line. The laser system also includes a central safety control operably associated with the one or more laser processing units and configured to monitor the safety devices of multiple laser processing units of the laser system. The interface of each of the one or more laser processing units is connected to the central safety control and via the data line to the respective one of the one or more lasers.

First claim

What is claimed is:

1. A laser system, comprising:
one or more lasers;
one or more laser processing units each connected to a respective one of the one or more lasers by a laser light cable and a data line associated uniquely with the laser light cable, each laser processing unit including a safety device for monitoring the laser processing unit and an interface for the data line; and
a central safety control operably associated with the one or more laser processing units and configured to monitor the safety devices of multiple laser processing units of the laser system,
wherein the interface of each of the one or more laser processing units is connected to the central safety control and via the data line to the respective one of the one or more lasers.

2. The laser system of claim 1 in the form of a laser network comprising multiple lasers and multiple laser processing units each connected to a respective one of the lasers, the central safety control connected to all of the laser processing unit interfaces.

3. The laser system of claim 1 , further comprising a central system control for controlling each laser and each laser processing unit of the laser system.

4. The laser system of claim 3 , wherein each laser processing unit of the laser system has a second interface connected to the central system control and via a second data line to the respective one of the one or more lasers.

5. The laser system of claim 3 , wherein the interfaces of the laser processing units are connected to the central system control by a bus.

6. The laser system of claim 3 , wherein the data line is formed by two electrical lines for a separate transmission of system control data of the central system control and safety control data of the central safety control.

7. The laser system of claim 3 , wherein each laser processing unit of the laser system has a first interface that is connected to the central system control and via the data line to the respective one of the one or more lasers, and a second interface that is connected to the central safety control and via the data line to the respective one of the one or more lasers.

8. The laser system of claim 7 , wherein at least one of the first interface or the second interface is connected to a processing optics of the laser processing unit, to which the laser light cable is connected or is provided in the vicinity thereof.

9. The laser system of claim 1 , wherein the interfaces of the laser processing units are connected to the central safety control by a bus.

10. The laser system of claim 1 , wherein the central safety control has a safety matrix in which an association between a particular laser processing unit and a particular laser is stored, and wherein, in an event of an open safety circuit of the particular laser processing unit, the associated particular laser is intended to be switched off by the central safety control via the interface of the particular laser processing unit.

11. The laser system of claim 1 , wherein the data line is formed by a single electrical line.

12. The laser system of claim 1 , wherein the data line is formed by one of a light guide of the laser light cable or by an additional light guide.

13. The laser system of claim 1 , wherein the laser light cable and the data line are joined together to form one of a cable bundle or a single cable.

14. The laser system of claim 1 , wherein the laser light cable transmits a pilot laser beam from a particular laser to a particular laser processing unit which the associated data line is connected to and which requests and detects the pilot laser beam.

15. The laser system of claim 1 , wherein one or more interfaces of each laser processing unit of the laser system is provided in an interface module of the laser processing unit.

16. The laser system of claim 1 , wherein at least one laser of the one or more lasers has a laser interface for the laser light cable and the data line.

17. The laser system of claim 1 , wherein at least one laser processing unit of the one or more laser processing units includes a processing optics that has an interface connected to the central safety control and via the data line to a respective one of the one or more lasers.

18. The laser system of claim 17 , wherein the processing optics has a second interface connected to a central system control and via the data line to the respective one of the one or more lasers.

19. The laser system of claim 1 , wherein each laser processing unit of the laser system is controlled by at least one of a local system control or a central system control.

20. The laser system of claim 1 , wherein the data line transmits values used for a safe power limitation of an individual light path with respect to a respective laser processing unit to which the data line is connected.

Assignees

• Trumpf Laser Gmbh + Co Kg
• Trumpf Laser Gmbh

Inventors

• Thieringer Rainer

Classifications

• B23K26/702

  Auxiliary equipment · CPC title

• B23K26/70

  Auxiliary operations or equipment · CPC title

• B23K37/006 Primary

  Safety devices for welding or cutting · CPC title

• B23K26/0604

  by a combination of beams · CPC title

• B23K26/40 Primary

  taking account of the properties of the material involved · CPC title