Novel metal wire fused deposition processing mechanism and process

Abstract

The invention provides a novel metal wire fused deposition processing mechanism and process. When the mechanism is adopted, metal wires can be preheated in a high-frequency heating mode while being conveyed, so that the metal wires are in a high-temperature semi-molten state in the stacking process, in the stacking process, a laser beam is used for heating and melting the metal wires to achieve layered stacking, after stacking is completed, the laser beam is used for cutting the metal wires, the phenomenon of wire drawing or stacked part disengaging is avoided, and the surface quality and the size precision of a workpiece are reduced. The mechanism comprises a feeding mechanism with a high-frequency heating function, a two-dimensional scanning galvanometer, a laser, a beam expander, a lifting workbench and a control system. The mechanism has the advantages that various parts can be manufactured through fused deposition of the metal wires, and meanwhile, the parts have higher dimensional precision and bright and clean appearance.

Description

technical field [0001] The invention relates to the technical field of metal wire fusion deposition technology, in particular to a novel metal wire fusion deposition processing mechanism and technology. Background technique [0002] In the past ten years, various rapid prototyping technologies derived from the principle of layered superposition have been developed rapidly. At present, there are three main popular molding processes: laser curing resin, powder sintering, and fusion deposition. Parts made of laser-cured liquid resin have high precision, but low strength and high cost. They are often used in the manufacture of non-stressed parts such as models and prototypes, and are widely used in the 3C industry; powder sintering is divided into metal powder and non-metal powder sintering. Non-metal powder is often used in casting models, metal powder parts can be used directly, the precision is higher than non-metal powder parts, the strength is the highest, but the cost is a...

AI Technical Summary

Problems solved by technology

However, when metal wires are superimposed in a cold state, the layers are easy to peel off, and the force generated when building the part structure is likely to cause peeling between layers or lines. In the molten state, due to the lack of restraint of the liquid droplets, the shape after solidification is out of control, and the surface quality is poor.

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