A gtaw arc fuse additive manufacturing arc extinguishing repair welding monitoring feedback method and system

Abstract

The invention discloses a GTAW arc fuse additive manufacturing welding repair monitoring feedback method and system at the arc extinguishing point. The invention collects the current image in real time through the industrial camera and sends it to the industrial computer, and the industrial computer is used for the image collected by the industrial camera. Calculate the height and compare it with the threshold, control the robot to accumulate according to the comparison result, or turn on the arc end collapse warning, and control the robot to repair welding. The detection method of this method is intuitive and flexible, and can be used to detect and adjust the height of the tungsten pole. The method of the present invention effectively solves the defect that the accumulation of heat input that is difficult to solve in GTAW pre-feeding leads to the defect of melting at the arc extinguishing point. It has the intuitive and flexible detection process and rich information. It has laid a solid foundation for improving the forming quality and precision of GTAW additive manufacturing.

Description

technical field [0001] The invention belongs to the field of additive manufacturing of arc fuses, and in particular relates to a method for monitoring and feedbacking repair welding at arc extinguishing places of additive manufacturing of GTAW arc fuses. Background technique [0002] Wire and Arc Additive Manufacturing (WAAM) is an advanced manufacturing technology that uses an arc as a heat source, and relies on numerical control technology to transport welding wires and gradually accumulate and form metal components according to the CAD model of the entity. Among them, GTAW additive manufacturing is an important branch of WAAM. This technology has the advantages of stable arc, small heat input, small spatter and high forming precision. It is currently widely used in direct manufacturing of copper alloy, aluminum alloy, and nickel-based alloy components. [0003] GTAW additive manufacturing generally uses the front wire feeding method for accumulation. However, unidirectio...

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Problems solved by technology

However, unidirectional deposition will lead to the problem of collapse at the arc extinguishing point during the additive manufacturing process, which will affect the shape of the formed part. Therefore, if the collapse defect can be automatically compensated during the forming process, the height of the weld bead can be guaranteed to be uniform. , it can effectively improve the shape and characteristics of the formed part. At the same time, because GTAW additive manufacturing is very sensitive to the height of the tungsten electrode, it is often necessary to manually adjust the height of the tungsten electrode during the forming process, which is very troublesome. The basis for these two problems lies in Real-time monitoring and feedback of tungsten electrode height and welding bead height

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