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A 3D printing laser scanning method

A laser scanning and 3D printing technology, applied in the field of 3D printing laser scanning, can solve the problems of limited scanning quality, uneven laser scanning quality, anisotropy of parts, etc., to reduce the risk of cracks, avoid fixed characteristics, improve quality effect

Active Publication Date: 2019-05-21
黑龙江多维时空自由制造有限公司
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Problems solved by technology

The main disadvantage of this laser scanning method is that the length of the scanning line is directly determined by the contour of the identified closed unit graphics, which has great uncertainty, especially the uneven quality of laser scanning, which is easy to cause various defects in the entire part. Anisotropy issues, therefore, have the disadvantage of limited scan quality

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  • A 3D printing laser scanning method
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Embodiment Construction

[0045] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0046] The present invention provides a 3D printing laser scanning method, the main idea is: not simply divide the cross-section to be formed into several independent closed unit graphics, but by standardizing the division of the processing interface, the shape of each unit graphic can be made as far as possible Cooperate with the scanning path, and make the shape of each unit graphic as similar as possible, so as to achieve almost the same effect on the scanning process of each unit graphic, so that the laser scanning quality is uniform and the anisotropy of the entire p...

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Abstract

The present invention provides a 3D printing laser scanning method, including: according to the cross-sectional shape of the cross-section, with the goal of dividing the cross-section into as many similar regions as possible, setting the line width between two adjacent parallel lines in the parallel line group, Also set the angle between the parallel line group and the central axis of the two-dimensional coordinate plane; use several parallel lines to divide the section into several unit graphics; scan path. The advantage is that each section is divided into several unit graphics with similar geometric properties as much as possible, and each unit graphics is a scanning area, so that the laser scanning quality is uniform and the anisotropy of the entire part is suppressed. For the section of each layer, random and incremental line width change methods are set, which avoids the fixed characteristics of the joint surface between regions during the layer-by-layer superposition process, and reduces the risk of cracks.

Description

technical field [0001] The invention belongs to the technical field of metal powder laser melting additive manufacturing, and in particular relates to a 3D printing laser scanning method. Background technique [0002] 3D printing technology, also known as metal material additive manufacturing technology and laser rapid prototyping technology, has been from the original principle-based device for manufacturing parts models to the current industrialized terminal parts production equipment, but it has been more than 30 years since its emergence. history, and the potential of its application development has increasingly attracted the attention of the international community. The development level of the future manufacturing industry is still one of the key symbols to measure the overall strength of a country. Driven by the development of related technologies such as numerical control technology, computers, machinery, and materials, future manufacturing technology will inevitably...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B33Y10/00
CPCB33Y10/00B22F10/00B22F10/366B22F10/20Y02P10/25
Inventor 张爱平王惠斌刘国库张强曲胜胡丽刚张佳刘邦涛王学鹏
Owner 黑龙江多维时空自由制造有限公司
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