Patent · US Expired

Process and device for the manufacture of cavities in workpieces through laser beams

US5149937A · kind A · utility

37Cited by

2References

10Claims

0Family size

Assignee

Maho, LLC · DE

Inventors

Werner Babel · Pfronten, DE
Peter Grund · Berlin, DE
Gunter Eberl · Waltenhofen, DE
Uli Sutor · Pfronten, DE

Key dates

Filing date	Jul 13, 1990
Grant date	Sep 22, 1992
Priority date	—
Expiry date	Jul 13, 2010

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K26/361
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention concerns a process and a device for the manufacture of relatively deep cavities in massive workpieces through a laser beam, whereby the material is removed by the laser beam (7) in close guide paths. According to the invention, during each linear ablation process the laser beam (7) deviated vertically is rotated by a predetermined angle while the workpiece (12) is moved back and forth synchronously on a circular path (14) around the rotating axis (4) of the laser beam (7). Upon ablation of a material layer, these linear ablation processes are repeated until the predetermined depth of the cavity has been reached. According to the invention, pocket-like or chamber-like cavities (13) with vertical or undercut walls can be produced with considerable ablation performance in often inappropriae materials such as ceramics, titanium, etc.

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