Large size mobile smoke blowing and absorbing selective laser melting intelligent device

Abstract

The invention discloses a large forming size mobile high-efficiency smoke treatment selective laser melting device which mainly comprises a laser galvanometer system, an intelligent monitoring system,a powder spreading and smoke blowing and absorbing integrated device, a forming table system and a powder recycling system. The laser galvanometer system is used for the implementation of an energy source and a scanning path of the device. The forming table system includes a substrate, a base table, a preheating system, a micro motion leveling mechanism, a powder sealing device and a base table motion control and feedback system. The base table motion control and feedback system achieves vertical motion of the base table and the substrate and real-time feedback of the position. The powder recycling system comprises a powder collection bin and a powder collection tank for real-time recycling of the powder. The intelligent device solves the problem that the selective laser melting forming size is small, and the smoke is difficult to treat effectively in the forming process. The intelligent device can achieve large size selective laser melting forming and effective real-time treatment ofthe smoke to ensure high-quality forming of parts.

Description

technical field [0001] The invention relates to a metal laser additive manufacturing equipment, in particular to an area-selective laser melting equipment based on an integrated design of a powder spreading and blowing and smoking mechanism and a movable blowing and smoking. Background technique [0002] Selective Laser Melting (SLM) is a kind of metal additive manufacturing technology, which can directly form metal parts that are close to complete density and excellent performance according to the slice data of the three-dimensional CAD model of the part. Based on the forming mechanism of layer-by-layer selective complete melting, SLM has many unique advantages: (1) It can form highly complex structural parts, such as lightweight porous structures, random cooling channels, etc.; (2) The designer's design freedom can be obtained Great liberation, eliminating a large number of manufacturing process constraints, so that it can design more excellent products; (3) The processing...

AI Technical Summary

Problems solved by technology

However, in the process of promoting the industrialization of SLM, there are still a lot of technical problems: (1) the forming size of selective laser melting equipment is small, which is difficult to meet the application requirements of large parts in aerospace, automobile and other industries; (2) the dust in the forming process is difficult to effectively deal with

The increase of the forming size will lead to an increase in the span of the blowing smoke, and the smoke and dust will fall on the surface of the forming part due to gravity, which will affect the performance of the part; The processing time is too long, and there is a lack of intelligent processing of the forming process, that is, the forming defects in the forming process cannot be monitored in real time and corresponding feedback measures can be made; (4) It is difficult to effectively fix the formed substrate

For large-shaped substrates, simple screw fixing at the edge cannot effectively suppress the deformation of the central area of ​​the substrate due to the accumulation of thermal stress

Therefore, this series of problems will hinder the industrialization development of selective laser melting technology

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