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Method and device for monitoring a cutting process

A technology of equipment and monitoring area, which is applied in the field of monitoring cutting process and equipment, and can solve problems such as the inability to reliably determine the cutting front angle

Active Publication Date: 2021-06-04
TRUMPF WERKZEUGMASCHINEN GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially during oxyfuel cutting, small nozzle diameters are used so that even in the case of a good cut the lower edge of the cutting front lies outside the viewing area delimited by the nozzle opening, so that the cutting front angle cannot be determined reliably

Method used

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  • Method and device for monitoring a cutting process
  • Method and device for monitoring a cutting process
  • Method and device for monitoring a cutting process

Examples

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Embodiment Construction

[0032] figure 1 An exemplary structure of a device 1 for process monitoring and process regulation of a laser fusion cutting process of a plate-shaped workpiece 2 by means of a laser processing device is shown, wherein in figure 1 Only the processing unit 3 (part of the laser processing head) is shown in FIG. It has a processing nozzle 6 and a deflection mirror 7 . In the present case, the deflection mirror 7 is designed to be partially transparent and thus forms an entrance-side component of the device 1 for process monitoring. The device 1 for process monitoring is part of the laser processing head, as is the processing unit 3 .

[0033] The deflection mirror 7 reflects the incident laser beam 5 and transmits the relevant process radiation which is relevant for process monitoring, in the present example, reflected by the workpiece 2 and emitted by the interaction region at approximately 550 nm Process radiation in the wavelength range between and 2000 nm. Instead of a pa...

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Abstract

The invention relates to a method for monitoring, in particular for controlling, a cutting process on a workpiece, said method comprising: focussing a machining beam, in particular a laser beam, on the workpiece; detecting a region (21) of the workpiece to be monitored, said region comprising an interaction region (22) in which the machining beam interacts with the workpiece; and determining at least one characteristic variable (L) of the cutting process, in particular a kerf (24) formed during the cutting process, on the basis of the detected interaction region (22). According to the invention, in a fusion cutting process a cutting front length (L) of a cutting front formed at the kerf (24) is determined as a characteristic variable on the basis of the detected interaction region (22). The invention also relates to a corresponding device for monitoring, in particular for controlling, a cutting process on a workpiece (2).

Description

technical field [0001] The invention relates to a method for monitoring, in particular for regulating, a cutting process at a workpiece, the method comprising: focusing a processing beam, in particular a laser beam, on the workpiece; detecting a region of the workpiece to be monitored, which includes the processing An interaction area of ​​the beam with the workpiece; on the basis of the detected interaction area, at least one characteristic characteristic variable of the cutting process, in particular a kerf formed during the cutting process, is ascertained. The invention also relates to a device for monitoring, in particular for regulating, a cutting process at a workpiece, which device comprises: a focusing device for focusing a processing beam, in particular a laser beam, on a workpiece; An image detection device of a region to be monitored, the region to be monitored includes an interaction region of the processing beam and the workpiece; an analysis and processing device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/03B23K26/08B23K26/142B23K26/38
CPCB23K26/38B23K26/142B23K26/032B23K26/083B23K26/0869B23K26/0643B23K26/0648
Inventor S·凯斯勒D·辛德黑尔姆W·马格
Owner TRUMPF WERKZEUGMASCHINEN GMBH & CO KG