A voltage regulation control arc robot additive forming system

Abstract

A voltage-regulating arc robot additive forming system adopts arc voltage control method to realize arc control and form a controlled arc additive forming process. It mainly improves the structure of the welding torch. The appearance of the improved welding torch is roughly similar to that of a plasma arc welding torch. The additive forming system of the present invention can realize pressure regulation through the distance between the welding wire and the workpiece during the process of additive forming by setting the pressure-regulating control welding gun. In addition, the through-hole diameter of the welding gun in the system of the present invention can be adjusted Real-time increase and decrease through voltage feedback, so as to control the shape of the output arc, and then adjust the transition form and frequency of the droplet, and finally realize the process control of the additive formed part.

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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