Multi-laser system lap joint correction method for additive manufacturing equipment

Abstract

The invention discloses a multi-laser system lap joint correction method for additive manufacturing equipment. The multi-laser system lap joint correction method comprises the steps that a detection plate with at least one film is placed on a substrate of the additive manufacturing equipment; controlling the multi-laser system to emit laser, and printing a graph with at least a plurality of cross points or a plurality of central points on the film according to a set program; taking out the detection plate, and placing the detection plate on a support plate of the correction device; a light source of the correction device emits light to the front side or the back side of the film, so that at least one camera of the correction device shoots a graph on at least one film; and the to-be-processed graph is processed to obtain the deviation angle, the expansion and shrinkage ratio and the offset of the galvanometers which are overlapped in pairs in the multi-laser system. According to the multi-laser system lap joint correction method for the additive manufacturing equipment, installation and debugging are convenient, installation and carrying are convenient, and lap joint debugging verification can be conveniently conducted on a client site; and the cost is low, the debugging period is short and the correction precision is high.

Description

technical field [0001] The present application relates to the technical field of additive manufacturing, in particular to a multi-laser system overlap correction method and device for additive manufacturing 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 model drive, fast speed, and rich and diverse material types. tooling mold, so the application range is very wide. Selective Laser Melting (SLM) is one of the additive manufacturing technologies that has developed rapidly 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. It is not affected by the shape of the part. The complexity is limited, no tooling is required, and the application range is wide. The basic process of the se...

AI Technical Summary

Problems solved by technology

This traditional method has the following defects: it cannot be adjusted successfully in one place, and repeated sintering verification is required, and the debugging time span is long, it takes several days for debugging and verification, and the lapping effect cannot be quickly confirmed; moreover, due to the Stability problems, or problems such as power failure or device replacement, will cause changes in the lapping effect to a certain extent. There is a long debugging cycle in both connection and debugging, and it is impossible to quickly judge whether the overlapping effect is consistent with the actual printing effect

Images