Patent · US Expired

Method for the machining of workpieces by means of several laser beams

US6838639B2 · kind B2 · utility

23Cited by

6References

25Claims

0Family size

Assignee

DataCard Corporation · US

Inventors

Rudiger Kreuter · Darmstadt, DE
Ulrich Bielesch · Frücht, DE

Key dates

Filing date	Feb 15, 2001
Grant date	Jan 4, 2005
Priority date	—
Expiry date	Feb 25, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K26/0604
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

In material machining by means of laser beams, in particular when engraving for example metal or when blackening and marking on plastic material, there is to be provided a process in which in spite of a high frequency of machining pulses the required minimum energy per pulse is achieved. For that purpose a plurality of laser beams are brought together by way of a beam-combining means and passed by way of a common beam-guide means on to the workpiece and in particular operated in time-displaced relationship.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.