A 3D printing method

Abstract

The invention discloses a 3D printing method, comprising: extracting the outer surface parameters of the part model to be printed; performing plane layered slices on the part model to be printed to obtain plane data of all layers, and combining the outer surface parameters to Fitting the plane data of all layers to obtain the surface data of all layers of the part model to be printed; according to the surface data of all layers, set the scanning path to obtain the surface scanning path data of all layers; according to the surface data of all layers The scanning path data of the curved surface is scanned and printed layer by layer to obtain the part to be printed. Therefore, the embodiment of the present invention does not need to print a solid support, which solves the problem of low material utilization when printing parts with curved surface structures, thereby shortening the manufacturing and processing cycle, and further reducing the manufacturing cost.

Description

technical field [0001] The invention relates to the technical field of metal additive manufacturing, in particular to a 3D printing method. Background technique [0002] Metal laser deposition manufacturing technology is an advanced manufacturing technology that has emerged in the past ten years and belongs to a kind of metal additive manufacturing technology. This technology uses a high-energy laser as a heat source, and pre-set or synchronously supplies metal powder or wire as a forming material, deposits metal powder on a metal substrate, and finally shapes it into a metal part. This technology usually consists of steps such as 3D modeling, layered slicing, scanning path planning, and part forming. It has the advantages of low manufacturing cost and short processing cycle, and is widely used in the aerospace field, especially for large and complex key structures. Direct forming of blanks. [0003] However, the current layered slicing method is mainly a planar layered mo...

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Problems solved by technology

[0003] However, the current layered slicing method is mainly a planar layered mode, that is, starting from the bottom surface and performing planar layered slicing along the Z-axis in a single direction. This planar slicing method limits the printing method of parts with curved surfaces. Adopt the method of printing solid support to avoid the part from forming in the air, thus increasing the manufacturing cost and processing cycle of the part, and the economic benefit is not good

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