Powder bed electron beam additive manufacturing equipment and manufacturing method

Abstract

The invention discloses a powder bed electron beam additive manufacturing equipment and a manufacturing method. The equipment includes: a forming chamber, in which a heat insulation frame, a powder spreading platform, a scraper and a forming cylinder are arranged; a first upper powder box and a second The upper powder box is set on both sides of the heat insulation frame; the first lower powder box and the second lower powder box are respectively set on both sides of the forming cylinder; and two powder pushing devices are respectively set on both sides of the powder spreading platform position; the powder pushing device includes a support plate, a powder pushing groove and a linkage assembly. On the premise that the size of the forming room and the internal structure remain unchanged, the present invention effectively utilizes the inner space of the forming room, greatly increases the amount of powder that can be accommodated in the powder box, and effectively solves the problem of metal powder that occurs when printing larger-sized parts If there is not enough powder and the printing is terminated, enough powder ensures that the equipment can print both small-size parts and large-size prints.

Description

technical field [0001] The invention relates to the technical field of 3D printing equipment, in particular to a powder bed electron beam additive manufacturing equipment and a manufacturing method. Background technique [0002] Powder bed electron beam 3D printing technology is a kind of additive manufacturing technology. Based on the digital model, this technology builds up and melts materials (metal powder) layer by layer to produce physical products. [0003] In the prior art, in the powder bed electron beam additive manufacturing equipment used in the 3D printing forming process, the powder feeding mechanism is usually divided into two types: an upper powder feeding mechanism and a lower powder feeding mechanism. The upper powder feeding mechanism is to install the powder boxes above the powder spreading platform and on both sides of the heat insulation frame, while the lower powder feeding mechanism is to install the powder boxes under the powder spreading platform and...

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Problems solved by technology

[0006] The embodiment of the present invention provides a powder bed electron beam additive manufacturing equipment and manufacturing method to solve the problem of insufficient metal powder in the powder box in the powder bed electron beam additive manufacturing equipment in the prior art and often occurs when printing large-sized parts The problem of printing termination due to insufficient metal powder

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