Patent · US Expired

Process for determining the instantaneous penetration depth and a machining laser beam into a workpiece, and device for implementing this process

US6215094A · kind A · utility

42Cited by

7References

8Claims

0Family size

Assignee

UNIVERSITAT STUTTGART · DE

Inventors

Friedrich Dausinger · Stuttgart, DE
Juergen Griebsch · Steinenbronn, DE
Ruediger Hack · Seligenstadt, DE

Key dates

Filing date	May 28, 1996
Grant date	Apr 10, 2001
Priority date	—
Expiry date	May 28, 2016

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K2103/16
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The penetration depth of a machining laser beam into workpiece is continuously monitored in that a measuring laser beam is directed onto the vapor capillary that is generated in the workpiece by the machining laser beam. The portion of the measuring laser beam that re-emerges from the vapor capillary is monitored by a sensor whose output signal is then used to bring about (producing holes) or to adjust (welding or superficial re-melting of a workpiece) the desired penetration depth defined by a pre-selected reference signal

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