Scanning system, method and three-dimensional object manufacturing equipment for manufacturing three-dimensional objects

Abstract

A scanning system, method, and three-dimensional object manufacturing equipment for manufacturing a three-dimensional object, the scanning system includes a first laser, a second laser, an optical path adjustment unit, and a control unit, and the control unit includes: a first scanning control module for receiving When the scan instruction is reached, the laser light emitted by the first laser is scanned and sintered in the first area under the adjustment of the optical path adjustment unit, and at the same time, the laser light emitted by the second laser is scanned and sintered in the second area under the adjustment of the optical path adjustment unit; and The second scanning control module is used to scan and sinter the second area with the laser light emitted by the first laser under the adjustment of the optical path adjustment unit after the preset number of layers is scanned and sintered, and at the same time, the second area is scanned and sintered. The laser light emitted by the second laser scans and sinters the first area under the adjustment of the optical path adjustment unit. The invention enables a certain corresponding area to scan and sinter by switching different lasers, thereby improving the sintering quality of three-dimensional object parts.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing scanning, and in particular relates to a scanning system and method for manufacturing three-dimensional objects and three-dimensional object manufacturing equipment. Background technique [0002] Additive Manufacturing (AM for short) 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. Since the 1980s Since its development, it has become a pillar technology in modern advanced manufacturing technology. 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 lasers to scan the cross-section of a three-dimensional entity layer by layer to complete prototype manufacturing. The complexity of the shape is limited, no tool...

AI Technical Summary

Problems solved by technology

[0003] In the specific application of the above-mentioned additive manufacturing technology, in order to expand the scanning area and improve the scanning efficiency, multiple lasers are used to scan the working area in the prior art, but the same area of ​​each layer of a work package is generally used. One laser is used for scanning sintering. However, since there are generally certain differences among the lasers, the long-term attenuation curves cannot be guaranteed to be completely consistent, resulting in differences in the strength of sintered workpieces in different regions, and because the work package of a workpiece is less Hundreds of layers, up to tens of thousands of layers, so as the number of sintering layers increases, the error is also accumulating, which seriously affects the sintering quality of the workpiece

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