Dynamic powder paving system for additive manufacturing

Abstract

The invention provides a dynamic powder paving system for additive manufacturing. A powder feeding and paving device can be miniaturized and power can be supplied quantitatively as needed. The dynamicpowder paving system for additive manufacturing comprises a powder cylinder, a powder feeding pipeline, a powder paving device, a local powder bed protecting hood and a guiding movement mechanism. The section contour of the powder cylinder is matched with the maximum section contour dimension of a needed formed part, and a powder paving area is formed between the first side wall and the second side wall of the powder cylinder; the lower end surface of the local powder bed protecting hood is empty, and the width of the local powder bed protecting hood is greater than the gap between the firstside wall and the second side wall; a buffer cabin of the powder paving device is fixed to the front side surface of the local powder bed protecting hood and is close to the lower end surface; and theguiding movement mechanism is used for driving the local powder bed protecting hood and the powder paving device to move synchronously to a next local powder paving area according to a preset track after local powder paving corresponding to the local powder bed protecting hood and laser processing of the local powder paving area is finished in light of a process command.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and relates to a powder spreading system required for additive manufacturing technology, and is especially suitable for processing large-sized complex components. Background technique [0002] Additive manufacturing (AM), also known as "3D printing", is based on digital CAD model data and adopts the manufacturing principle of superposition method similar to mathematical integration to reduce the manufacturing of three-dimensional solids to two-dimensional cross-sections. The point-by-layer manufacturing method realizes the dimension reduction forming of three-dimensional parts, which is not limited by the complexity of the shape, and can realize fast, high-quality, efficient, economical, fully intelligent and fully flexible manufacturing of parts with arbitrary complex shapes. Additive manufacturing is an important part of the advanced manufacturing industry. It is a high-end digit...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that the powder spreading system needs to store a large amount of powder in the existing additive manufacturing process, which leads to a large device volume, and provides a dynamic powder spreading system for additive manufacturing, which can realize the small size of the powder feeding and powder spreading device , and can realize quantitative supply of powder on demand

Images