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Method and device for detecting an incomplete cutting action

A technology of equipment and interaction, applied in welding equipment, laser welding equipment, metal processing equipment, etc., can solve problems such as low oxygen pressure, strong defocus, and low power of high-energy beams

Active Publication Date: 2014-12-03
TRUMPF WERKZEUGMASCHINEN GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The reason for this is often the feed rate is too high, the power of the high-energy beam is too low, the oxygen pressure is too low or the high-energy beam used is defocused too strongly

Method used

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  • Method and device for detecting an incomplete cutting action
  • Method and device for detecting an incomplete cutting action
  • Method and device for detecting an incomplete cutting action

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Embodiment Construction

[0036] figure 1 shows an exemplary structure of a device 1 for process monitoring and process regulation via CO 2 The laser cutting process carried out by the laser processing equipment on the workpiece 2, in figure 1 Only shown in CO 2 A processing unit 3 (part of a laser processing head) of a laser processing device having a CO made of zinc selenide for making the laser processing device 2 A focusing lens 4 for focusing the laser beam 5 , a cutting gas nozzle 6 and a deflection mirror 7 . In the case of the present invention, the deflection mirror 7 is constructed partially light-transmissive and forms an entry-side component of the device 1 for process monitoring.

[0037] The deflection mirror 7 reflects the incoming CO 2 The laser beam 5 (with a wavelength of about 10 micrometers) and transmitted, which is important for process monitoring, is reflected by the workpiece 2 and emitted by the CO 2 The region of interaction 22 of the laser beam 5 with the workpiece 2 emi...

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PUM

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Abstract

Methods, devices and systems for detecting an incomplete cutting action when cutting a workpiece with a high-energy beam are disclosed. In one aspect, a method includes taking an image of a region of the workpiece to be monitored, the region including an interaction region of the high-energy beam with the workpiece, evaluating the image taken in order to detect pooled slag at an end of the interaction region opposite a cutting front, and detecting whether a related cutting action is incomplete based on an occurrence of detection of pooled slag.

Description

technical field [0001] The invention relates to a method for detecting cutting fractures (Schnittabriss) when cutting with a high-energy beam, in particular with a laser beam, comprising: recording an image of a region of a workpiece to be monitored, said region to be monitored comprising high-energy The area of ​​interaction of the beam with the workpiece. The invention also relates to a corresponding device for detecting cutting breaks. Background technique [0002] When thermally cutting a workpiece with a high-energy beam, for example with a plasma beam or with a laser beam, cutting fractures can occur, ie the high-energy beam no longer completely cuts through the (metallic) workpiece because the path energy is insufficient to melt the entire cut gap volume. Reasons for this are often the feed rate is too high, the power of the high-energy beam is too low, the oxygen pressure is too low or the high-energy beam used is defocused too strongly. When a cutting break occur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/03B23Q17/09G01N21/88
CPCB23K26/032B23K26/422B23K26/38B23K10/00B23K10/006B23K26/702B23K31/12B23K31/125
Inventor T·黑塞D·辛德黑尔姆B·雷加德
Owner TRUMPF WERKZEUGMASCHINEN GMBH & CO KG