Single-laser large-breadth galvanometer movable type 3D printing device and method

Abstract

The invention provides a single-laser large-breadth galvanometer movable type 3D printing device and a method. The single-laser large-breadth galvanometer movable type 3D printing device comprises an X-direction high-precision high-speed linear motor module, a Y-direction high-precision high-speed linear motor module, a high-rigidity galvanometer assembly, a laser device and an industrial personal computer. The single-laser large-breadth galvanometer movable type 3D printing device is suitable for metal 3D printing equipment, and the method that the galvanometer moves along with a printing area in the part forming process is provided to widen the forming breadth aiming at the difficulty that a single fixed galvanometer cannot form parts with the breadth of 500 mm * 500 mm or above. According to the method, the problem of mechanical property difference of part division junction lines caused by power difference among multiple galvanometers can be solved, and the forming breadth of equipment can be effectively improved, so that the forming breadth of 500mm * 500mm and above of a single galvanometer becomes possible; and meanwhile, according to a two-dimensional redundant scanning strategy suitable for the galvanometer movable type 3D printing device, interactive scanning of different scanning methods on the same section can be achieved, and the problem of part forming failure caused by thermal stress and thermal deformation can be effectively solved.

Description

technical field [0001] The present invention relates to the field of additive manufacturing, in particular to a mobile 3D printing device and method with a single laser large-format vibrating mirror. Background technique [0002] In the field of metal additives, the scanning format of the galvanometer is limited by factors such as scanning deflection angle and focal length, resulting in the constrained format of a single galvanometer within 350mm×350mm. Large-format metal additive manufacturing equipment often adopts a combination of vibrating mirrors, that is, a single device is equipped with multiple sets of vibrating mirror scanning systems. Multi-galvanometer scanning is beneficial to improve the forming efficiency of the equipment, but the bonding strength decreases due to the power deviation of different sets of lasers at the block connection of parts. [0003] Therefore, in order to overcome the defects of the above-mentioned additive manufacturing equipment, the pre...

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Problems solved by technology

At the same time, in order to effectively alleviate the problem of part forming failure caused by thermal stress and thermal deformation, a two-dimensional redundant scanning strategy suitable for the galvanometer mobile 3D printing device is proposed, which can realize the interactive change of the scanning method on the same section

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