Position correction method, scanning control method, medium and equipment for selective laser melting

Abstract

The invention relates to a position correction method, a scanning control method, a medium and equipment for selective laser melting. The position correction method comprises the following steps of: acquiring a pre-machining section of a part model of a part to be machined at a current position in slicing software; controlling a scanner to scan a contour line containing at least two characteristicpoints according to the pre-machining section so as to obtain a printed contour line on a covering plate covering corresponding points of corresponding characteristic points on the part to be machined; obtaining a position deviation value between position points of the corresponding characteristic points on the printed contour line and corresponding points of the corresponding characteristic points on the actual contour line of the part to be machined; and correcting the current position of the part model based on the position deviation value. Therefore, the position deviation value can accurately reflect the deviation between the position of the part model and the actual position of the part to be machined in the slicing software, thereby correcting the position of the part model in theslicing software according to the position deviation value, effectively eliminating dislocation, improving the scanning dimension precision and improving the forming precision of printing manufacturing.

Description

technical field [0001] The invention relates to the technical field of process manufacturing, in particular to a position correction method for selective laser melting, a scanning control method, a medium and equipment. Background technique [0002] Additive manufacturing technology is an advanced manufacturing technology with distinctive features such as digital manufacturing, high flexibility and adaptability, direct CAD (Computer Aided Design) model drive, fast speed, and rich and diverse material types, commonly known as "3D printing". Selective Laser Melting (SLM) is one of the fastest-growing additive manufacturing technologies in recent years. It uses powder materials as raw materials and uses laser to scan the cross-section of a three-dimensional entity layer by layer to complete prototype manufacturing. The complexity of the shape of the part is limited, no tooling is required, and the application range is wide. [0003] The basic operation process of the selective...

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to address the problem of low forming precision in selective laser melting reprocessing, and provide a position correction method, scanning control method, medium and equipment for selective laser melting that can improve forming precision

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