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Laser processing machine tool with optical film slice for eliminating dispersion field

A technology of laser processing and optical diaphragm, which is applied in the field of laser cutting machine tools or laser welding machine tools, focusing optical devices, and can solve the problem of high strength loss

Inactive Publication Date: 2012-01-04
TRUMPF WERKZEUGMASCHINEN GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the smaller the aperture of the diaphragm, the higher the intensity loss of the laser mode

Method used

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  • Laser processing machine tool with optical film slice for eliminating dispersion field
  • Laser processing machine tool with optical film slice for eliminating dispersion field
  • Laser processing machine tool with optical film slice for eliminating dispersion field

Examples

Experimental program
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Embodiment Construction

[0017] figure 1 CO shown in 2 The laser processing machine tool 1 includes a CO with a coupling-out window (coupling-out mirror) 3 2 The laser generator 2, through which the laser beam 4 is coupled out into the gas-flushed beam guiding cavity 5 through the output window. Integrated on the outcoupling window 3 is a focusing optics 6 , which focuses the laser beam 4 centrally in the beam guiding cavity 5 to an intermediate focal point ZF. The position of the intermediate focus ZF is arbitrary but suitable for selecting a fixed distance between the two optical elements, in the exemplary embodiment the intermediate focus is located between the outcoupling window 3 and the deflecting mirror 7 . The laser beam 4 is deflected at the deflection mirror 7 and the optional laser beam 4 is focused at other elements via the laser processing head 8 onto the workpiece (not shown) to be processed. For example, the laser processing machine tool 1 may be a laser cutting machine tool or a las...

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PUM

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Abstract

The invention relates to a laser machining machine (1) with a focussing optic system (6), which brings about an intermediate focussing of the laser beam (4) in a beam guide chamber (5) and with an optical shutter (9) arranged in the vicinity of the intermediate focussing (ZF) for beam shaping of the laser beam (4), the shutter opening diameter being according to the invention ca. 1.2 to ca. 2.5 times larger than the 99 % beam diameter of the laser beam (4) with intermediate focussing.

Description

technical field [0001] The present invention relates to a laser processing machine tool, in particular to a laser cutting machine tool or a laser welding machine tool, comprising focusing optics, which centrally focuses the laser beam in a beam guiding cavity, and comprising an optical diaphragm (spatial diaphragm), The diaphragm is arranged in the intermediate focal area to form the laser beam. Background technique [0002] Such laser processing machines are known, for example as mentioned in patent document EP-A-1 180 409 . [0003] In the processing of materials with lasers, such as in laser cutting or welding, the processing results depend on the power density and beam quality of the laser beam. The laser beam diameter at the processing point must be adjusted frequently and precisely to achieve the desired processing result. In addition to the laser mode, the laser beam also contains diffractive structures (diffraction parts), which have a larger beam diameter and larg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/06
CPCB23K26/0656B23K26/066
Inventor M·格施万纳N·黑伯伦
Owner TRUMPF WERKZEUGMASCHINEN GMBH & CO KG