Multi-vibration mirror calibration method, printing method and optical system used in 3d printing

Abstract

The invention provides a multi-galvanometer calibration method, a multi-galvanometer printing method and an optical system adopted for 3D printing. The multi-galvanometer calibration method includes the following steps that firstly, each galvanometer is calibrated independently, and calibration files of all galvanometers are obtained; secondly, the above calibration files are loaded into the corresponding galvanometers, and all the galvanometers conduct printing on the same test paper to form a set of dot matrixes; and thirdly, one of the galvanometers is set to be the benchmark galvanometer, the dot matrix obtained through printing of the benchmark galvanometer on the test paper serves as the benchmark dot matrix, deviation sets of the dot matrixes printed by the other galvanometers and the benchmark dot matrix are calculated, the deviation sets serve as deviation calibration files of the other galvanometers, the deviation calibration files are loaded into the corresponding galvanometers and used for preprocessing path vectors to be printed by the corresponding galvanometers, and therefore mutual calibration of the multiple galvanometers is completed. By means of the multi-galvanometer calibration method, the multi-galvanometer printing method and the optical system adopted for 3D printing, the printing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a multi-mirror calibration method, a multi-mirror printing method and an optical system used in 3D printing. Background technique [0002] 3D printing equipment based on laser forming (including stereolithography SLA, laser selective sintering SLS, laser selective melting SLM), the optical path usually consists of a laser, a dynamic beam expander focusing mirror (or beam expander plus F-Theta mirror) and Composed of a galvanometer. During the printing process, the laser is irradiated to different positions of the processing surface through the galvanometer, so as to realize processing in different ways (solidification, sintering or melting). During the 3D printing process, the scanning time directly affects the processing efficiency of the 3D printing equipment. However, due to objective limitations such as laser power, galvanometer deflection speed, and process requirement...

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Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a multi-vibration mirror calibration method, a multi-vibration mirror printing method and an optical system for 3D printing, which are used to solve the problem of the gap between multiple vibrating mirrors in the prior art. mutual calibration problem

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