Double passive vision sensing detecting device in GMA material increase manufacturing and detecting method thereof

Abstract

The invention provides a double passive vision sensing detecting device in GMA material increase manufacturing and a detecting method thereof. The device comprises a working platform, a base plate, a welding gun, a spray nozzle, a width vision sensor, a width composite light filtering system, a height vision sensor and a height composite light filtering system, wherein the width vision sensor is used for monitoring width information of a tail part of an accumulating weld pool; and the height vision sensor is used for monitoring a distance from a spray nozzle to the tail part of the accumulating weld pool. The detecting method comprises a process of processing accumulating dimension images and a process of calibrating the sensing system. According to the double passive vision sensing detecting device in GMA material increase manufacturing and the detecting method thereof disclosed by the invention, accumulating width in GMA material increase manufacturing and feature information of a distance from the spray nozzle to the upper surface of a cladding layer can be monitored simultaneously, so that the real-time detecting problem of cladding width and cladding height in GMA material increase manufacturing is effectively solved; and real-time monitoring and closed-loop control for follow-up accumulating dimension are realized by extracting the feature information of accumulating dimension, so that reliable technical support is provided for real-time control of accumulating quality in GMA material increase manufacturing.

Description

technical field [0001] The invention relates to a detection device and method for passive visual sensing of accumulation size in gas metal arc (GMA) additive manufacturing of molten electrode, and belongs to the technical field of arc additive manufacturing. Background technique [0002] With the increasingly stringent requirements for the performance, precision, manufacturing cost and cycle of dense metal parts in key technical fields such as aerospace, energy power, and national defense, the use of additive manufacturing technology to directly form metal parts has become a research hotspot at home and abroad. Commonly used heat sources for additive manufacturing of metal parts include lasers, electron beams, and electric arcs. Among them, GasMetalArc (GMA) additive manufacturing technology uses welding arc as the heat source to melt the metal wire, and stacks each layer on the substrate according to the set forming path, layer by layer until the metal part is formed. It h...

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Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to solve the problems of inconsistent forming dimension width and the change of the distance from the nozzle to the upper surface of the cladding layer in the existing GMA additive manufacturing, and to provide a GMA additive manufacturing double passive Visual sensing device and detection method thereof

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