Monitoring device for a laser machining device
AssigneeFFT EDAG Produktionssysteme GmbH & Co. KG
InventorErwin Martin Heberer
Life of this patent
Estimating the term…
Abstract
A monitoring device (10) for a laser machining device (12) that has one or more laser beams (13) that are displaced along a predetermined adjustable trajectory (14, 16) along a workpiece (18) includes one or more sensors (20, 22) which monitor(s) the processing signal (24) of the machining process in a three-dimensional section (26). The one or more sensors (20, 22) activate an alarm device or interrupter (28) for the one or more laser beams (13) of the laser machining device (12) if the one or more process signals (24) in the section (26) exceed a predetermined threshold value or fall short of it, the one or more sensors (20, 22) being independent of the laser machining device (12).
Claims18
A monitoring device (10) for a laser machining device (12) for machining a workpiece (18), comprising:
- one or more sensor or sensors (20, 22) that monitor one or more process signals (24) of the laser machining device (12) in a three-dimensional spatial section (26) associated with the workpiece (18), whereby the sensor or sensors (20, 22) transmit signal data to a computing unit (28) so that a warning device or switch off device (28) for one or more laser beams coupled to the computing unit may be activated if the process signal or signals (24) in the spatial section (26) exceed or fall below a prescribed threshold value, wherein the sensor or sensors (20, 22) are independent of the laser machining device (12);
- a low-energy laser pointer (40);
- and
- a diffractive grid with which the laser beam of the laser pointer (40) is expanded to form a strip structure or grid structure that is projected into the spatial section (26).
A monitoring system for a laser machining device, comprising:
- one or more sensors independently operable from the laser machining device, wherein said sensor(s) monitor one or more process signals in a three-dimensional spatial section associated with a workpiece processed by one or more laser beams emitted by the laser machining device;
- one or more attenuation filters to darken images detected by the one or more sensors;
- a warning device or switch-off device for the one or more laser beams, said warning device or switch-off device being activated if a process signal or process signals in the spatial section either exceed or fall below a prescribed threshold value;
- and
- a laser pointer generating a light point or having a diffractive grid with which the laser beam of the laser pointer is expanded to form a strip structure or grid structure, wherein said light point, strip structure or grid structure is projected into the spatial section for detection by the sensor(s) to calibrate the sensor(s) before the laser machining device begins machining the workpiece.
Dependencies are inferred from the claim text.