Control system and method of additive manufacturing laser formation system integrated equipment

Abstract

The invention relates to a control system and method of additive manufacturing laser formation system integrated equipment and belongs to the technical field of additive manufacturing. The control system comprises a powder circulation system and a gas circulation system. The powder circulation system comprises a feeding barrel, a screening device, a material storage barrel, a collecting device, afeeding device and a vacuum unit. The gas circulation system comprises a vacuum unit, an inertia gas inlet, a gas storage tank, a circulation pump and a filter. According to the control system and method of the additive manufacturing laser formation system integrated equipment, through effective control over all the relevant devices of the powder circulation system, powder feeding to a laser formation module is achieved, and cyclic utilization of powder in a post-treatment chamber in a post-treatment module is also achieved; through control over all the devices of the gas circulation system, inert gas shielding protection of the laser formation module and high-vacuum-degree environment of a heat treatment module are achieved; and in this way, the efficiency of an additive manufacturing technological process is improved, waste of metal powder and inert gas is reduced, the operation environment of operation personnel is improved, and powder harm is lowered at the same time.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to a control system and method for an integrated equipment of an additive manufacturing laser forming system. Background technique [0002] The raw materials used in additive manufacturing technology usually include powder, silk, chemical liquid, etc., and the current mainstream technology for industrial applications is to use laser or electron beam as the energy source to melt or bond the powder, such as SLM, SLS, EBM and other technologies. The raw materials used in these technologies are powders of tens to hundreds of microns. During the molding process, the powder is evenly spread on the molding surface by the powder supply mechanism and the powder spreading mechanism, and then the specific geometric shape of the surface is formed by using energy sources such as lasers. The powders in the regions are fused, creating a metallurgical bond that ultimatel...

AI Technical Summary

Problems solved by technology

[0003] Since the parts after molding are buried in the powder pile of the molding shaft, the excess powder needs to be removed before it can be taken out. At the same time, there is also a large amount of powder in the inner cavity of the molded part that needs to be removed. Currently, the commonly used methods mainly rely on manual shoveling and Beating molded parts, this process is not only inefficient, but also causes excessive contact between the powder and the human body, endangering human health, and also causing excessive powder waste

On the other hand, for formed metal parts, in order to eliminate certain stress concentration problems, it is necessary to quickly send the formed parts into the annealing furnace for heat treatment, and the long-term powder cleaning process will affect the heat treatment performance of the formed parts

Therefore, the laser forming process, powder post-processing process and molded parts heat treatment process require a unified system integration equipment and corresponding equipment control system to overcome the impact of molded parts performance, powder waste, human hazards, etc. caused by the current independent operation process. unfavorable factors

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