Dynamic powder paving system for additive manufacturing

A technology of additive manufacturing and powder spreading, which is applied in the field of additive manufacturing, can solve the problems of large device size, etc., and achieve the effects of reducing operating power consumption, saving costs, and saving powder consumption

Active Publication Date: 2019-04-12
NAT INST CORP OF ADDITIVE MFG XIAN
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  • Abstract
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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

Method used

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  • Dynamic powder paving system for additive manufacturing
  • Dynamic powder paving system for additive manufacturing
  • Dynamic powder paving system for additive manufacturing

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Embodiment Construction

[0047] Such as figure 1 As shown, the powder cylinder is composed of the first side wall and the second side wall. Its overall shape and size are determined according to the shape characteristics of the parts to be processed. The size of the powder cylinder is slightly larger than the maximum cross-sectional size of the parts to be formed (the first The side wall and the second side wall and the shaped base plate as the bottom surface constitute the part shaped area).

[0048] Such as figure 1 , image 3 As shown, a local powder spreading device is installed on the bottom of the partial powder bed shield along the circumferential direction of the powder cylinder, and a scraper is installed at the bottom, and the scraper is a flexible scraper or a hard scraper. The scraper is positioned between the first side wall and the second side wall of the powder cylinder, and can be slightly lower than the lower end surface of the partial powder bed protective cover (a certain gap is r...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y30/00
CPCB33Y30/00B22F10/00B22F12/90B22F12/70B22F10/73B22F10/28Y02P10/25
Inventor 卢秉恒陈祯张丽娟魏培张树哲邹亚桐王博文
Owner NAT INST CORP OF ADDITIVE MFG XIAN
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