The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 28, 2009
Filed:
Oct. 12, 2005
Akira Egawa, Gotenba, JP;
Kazuhiro Suzuki, Yamanashi, JP;
Hiroaki Tokito, Yamanashi, JP;
Fanuc Ltd, Minamitsuru-gun, Yamanashi, JP;
Abstract
A laser-machining device () for machining a workpiece (W) by radiating it with the laser beam output from a nozzle () of a laser oscillator () is disclosed. A gap amount sensor () detects the gap amount between the workpiece and the nozzle. An approach unit () causes the nozzle to approach the workpiece to a position suitable for the laser machining. The approach unit performs a first approach operation () for making the nozzle approach the workpiece using the gap amount detected by the gap amount sensor until the gap amount comes to assume a predetermined value, and a second approach operation (), after the first approach operation, for causing the nozzle to approach the workpiece until the complete approach without using the gap amount detected by the gap amount sensor. As a result, the required time is shorter and a stable piercing process can be executed.