Pressure regulating control type arc robot additive forming system

Abstract

The invention discloses a pressure regulating type arc robot additive forming system. The system adopts an arc pressure control method to achieve a controlled arc additive forming process through electric arc control, the structure of a welding gun is mainly improved, the appearance of the improved welding gun is roughly similar to that of a plasma arc welding gun. According to the additive forming system, a pressure regulating control type welding gun is arranged so that the pressure regulation can be achieved through the distance between a welding wire and a workpiece in the additive formingprocess, in addition, the diameter of the through hole of the welding gun in the system can be increased and reduced through feedback of voltage in real time, so that the shape of the output electricarc is controlled, then the transition form and the transition frequency of molten drops are adjusted, and finally the process control of the additive forming part is realized.

Description

technical field [0001] The invention relates to controlling the shape of the arc through voltage, realizing different forms of droplet transfer, and adopting a voltage regulation control type arc robot to realize additive manufacturing. Background technique [0002] The way to achieve voltage regulation is mainly through transformers, thyristor control, voltage regulators, etc., but because the transformer is bulky and noisy, and the overcurrent capability of the thyristor is weak, the current in the process of additive manufacturing is relatively large, so it is not necessary. Adoption, but mainly rely on artificial passive adjustment. [0003] At present, the problem of arc additive manufacturing is mainly due to the accumulation of heat and the immobilization of parameters during the additive process, which leads to the collapse of the deposition layer for some large workpieces at the end of the additive process, resulting in the scrapping of the workpiece. [0004] The ...

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Problems solved by technology

[0002] The way to achieve voltage regulation is mainly through transformers, thyristor control, voltage regulators, etc., but because the transformer is bulky and noisy, and the overcurrent capability of the thyristor is weak, the current in the process of additive manufacturing is relatively large, so it is not necessary Adoption, but mainly rely on artificial passive adjustment

[0003] At present, the problem of arc additive manufacturing is mainly due to the accumulation of heat and the immobilization of parameters during the additive process, resulting in the collapse of the deposition layer for some large workpieces at the end of the additive process, resulting in the scrapping of the workpiece

[0004] The current arc additive guns are only used as one end of the electrode, and cannot realize the arc generated between the welding torch and the workpiece into a controlled arc, resulting in the arc not being able to change according to the voltage and arc heat during the additive process. Changes in the thickness of the workpiece, etc. to achieve adjustment

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