A 3D printing powder centrifugal supply, vibration compacting device and method

Abstract

The invention discloses a 3D printing powder centrifugal supply and vibration compacting device and method; it includes a centrifugal powder spreader arranged in a molding chamber, a powder feeding mechanism for conveying powder for the centrifugal powder spreader, and a powder spreader arranged in the middle and lower part of a powder spreader workbench. The liftable three-dimensional vibration forming platform; the centrifugal powder spreader is a cylindrical structure that can rotate and move in the plane above the workpiece forming area of ​​the three-dimensional vibration forming platform. The openings at the upper and lower ends gradually expand, and the upper opening is the powder receiving port. , the opening at the lower end is a powder sprinkling port, and the powder sprinkling port is equipped with a screen for spreading the received powder to the workpiece forming area of ​​the three-dimensional vibration forming platform. The device and method can realize the uniformity and consistency of the powder spreading process, the particles of the powder to be spread are more compact, and the density and surface roughness of molded parts are improved.

Description

technical field [0001] The invention relates to the field of 3D printing equipment, in particular to a 3D printing powder centrifugal supply and vibration compacting device and method. Background technique [0002] 3D printing technology is a kind of rapid prototyping manufacturing technology. It is directly based on the three-dimensional solid model data of the product. After computer processing, the three-dimensional solid model is converted into the superposition of many plane models, and finally the product is printed layer by layer under the control of the computer. In particular, electron beam melting (EBM) technology, which uses electron beams to melt metal powder layer by layer to form dense parts, has the advantages of high energy utilization, fast processing speed, low operating cost, and high vacuum protection. It has become a high-performance Ideal rapid manufacturing technology for complex powder metallurgy parts. One of the key indicators of electron beam melt...

AI Technical Summary

Problems solved by technology

And for each powder layer, the existing method of only using a scraper powder layer cannot promote a more compact combination between the powder layer and the powder layer in the vertical direction

And the traditional method of simply using the scraper cannot ensure the uniformity and consistency of the metal powder particles spread on the working substrate due to the selection of the scraper material and the design of the shape.

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