Patent · US Expired

Arrangement for machining workpieces by means of a laser beam by building up a plasma that is to be kept within limits

US4839493A · kind A · utility

11Cited by

4References

11Claims

0Family size

Assignee

Gerd Herziger · DE

Inventors

Gerd Herziger · Rosdorf, DE
Eckhard Beyer · Alsbach, DE
Peter Loosen · Stolberg, DE
Reinhart Poprawe · Aachen, DE

Key dates

Filing date	Apr 17, 1986
Grant date	Jun 13, 1989
Priority date	—
Expiry date	Apr 17, 2006

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K26/032
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

In machining a workpiece, maximal absorption of laser irradiation in the workpiece is achieved by a minimal interference by optical back-coupling and plasma effects is achieved by continuously determining the actual value of the laser irradiation and continuously sensing stochastic processes taking place in the machining zone and in response to such measuring and sensing, controlling the modulation of laser irradiation.

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