Intelligent powder laying planning method based on selective laser melting equipment

Abstract

The invention discloses an intelligent powder laying planning method based on selective laser melting equipment. The intelligent powder laying planning method comprises the steps that S1, slice image information of each layer of a machined part is collected; s2, extracting contour information of a processing part in the slice image information of each layer; s3, scanning the contour of each layer of the machined part, and calculating to obtain a plurality of intercept between a scanning line and the contour of each layer of the machined part; s4, screening the maximum intercept of each layer of contour from the plurality of intercept of each layer of contour to obtain a maximum intercept sequence (L1, L2,..., Li,..., Ln) of the contour; s5, calculating a powder spreading coefficient c1 required by the first layer of the machined part; s6, according to the step S5 and so on, calculating to obtain powder spreading coefficients c2,..., ci,..., cn required by other layers of the machined part; and S7, determining the total powder spreading coefficient C required by the machined part. According to the powder spreading device, accurate powder spreading can be achieved, and the problems of excessive powder spreading, insufficient powder spreading and powder overflowing are solved.

Description

technical field [0001] The invention relates to the field of selective laser melting processing, in particular to an intelligent powder spreading planning method based on selective laser melting equipment. Background technique [0002] Selective laser melting (SLM) technology is the most promising technology in additive manufacturing. The use of high-energy laser beams to directly melt metal powder can form almost completely dense high-performance metal parts, which can be processed by traditional methods. Complex parts that are processed or difficult to process have broad application prospects in aerospace, personalized biomanufacturing and complex mold inserts. [0003] At present, in the process of selective laser melting, there is insufficient powder spreading, which results in remelting of parts in selected regions, which affects the forming quality. There is also an excessive powder spreading coefficient, which leads to a large amount of powder overflowing in the recov...

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Problems solved by technology

[0003] At present, there is insufficient powder spreading in the process of selective laser melting, which causes remelting of selected parts, which affects the forming quality. There is also an excessive powder spreading coefficient, which leads to a large amount of powder overflow in the recovery cylinder, resulting in powder pollution and heavy sieving workload. The problem

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