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Method and corresponding system for monitoring the quality of a laser processing process

A processing quality, laser processing technology, applied in the cutting or welding process, the corresponding system field, can solve the problem of not allowing the real-time adjustment of technical parameters, not allowing the correction of bad processing, etc.

Active Publication Date: 2015-10-21
PRIMA IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is necessarily accompanied by disadvantages, to the extent that production must in any case be monitored by the operator in charge of the machine and the correction of poor processing quality must be carried out offline by stopping production and empirically adjusting the cutting / welding technical parameters Correction
[0004] Also known are methods for monitoring cutting or welding quality operating on-line during production, which also use reference signals for monitoring operations, but do not allow correction of poor machining and do not allow real-time adjustment of technical parameters

Method used

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  • Method and corresponding system for monitoring the quality of a laser processing process
  • Method and corresponding system for monitoring the quality of a laser processing process
  • Method and corresponding system for monitoring the quality of a laser processing process

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Embodiment Construction

[0013] In short, the monitoring method according to the invention serves to ensure a constant quality of the laser processing process, in particular laser cutting or welding, during industrial production by:

[0014] - Acquisition of signals representative of the quality of the machining process in real time;

[0015] - generate reference parameters (energy thresholds) representing the desired processing quality;

[0016] - Real-time processing of process signals;

[0017] - identification of workmanship quality and possible defect types; and

[0018] - Control the machining process and correct possible defects by adjusting the technical parameters of the machining operation (especially laser cutting or welding) in real time.

[0019] Therefore, maintaining the desired quality during the machining process is based on the analysis of signals representative of the process quality with reference to given parameters derived from the process having the desired quality or in any c...

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Abstract

A method for monitoring the quality of laser-machining processes (500), including the operations of: acquiring via sensor means (540), in particular optical sensors, a machining-process signal (Xp) and calculating from said signal representing the process (Xp) parameters (E1,E2,DC) that represent the machining quality during the laser-machining process; and making available (130) corresponding reference parameters (E1r,E2r,DCr) representing a given machining quality, which are calculated from a process reference signal (Xr) acquired via said sensor means (540). executing in real time an operation of recognition (300) that a set of process observations (x;N1,N2,NDC,DIR) belongs to one or more of a plurality of statistical models (¸ k ) that identify states of the machining process (500).

Description

technical field [0001] The invention relates to a method for monitoring the quality of a laser machining process, in particular a cutting or welding process, and also to a corresponding system. Background technique [0002] During cutting and welding processes such as laser cutting and welding, as well as processing processes such as cladding and heat treatment, adjusting technical parameters in real time and maintaining a constant process quality has a major impact on industrial production and product quality. Smart processing implemented by cutting / welding machines allows optimization and validation of production and allows reduction of waste. [0003] In this respect it is known to carry out the production control and quality verification by the operator or by analyzing the workpieces by means of special instruments which are operated offline. This is necessarily accompanied by disadvantages, to the extent that production must in any case be monitored by the operator in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/406B23K26/70
CPCB23K31/12B23K26/03
Inventor P·卡莱法蒂
Owner PRIMA IND