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工程设计学报
工程设计学报  2020, Vol. 27 Issue (3): 373-379    DOI: 10.3785/j.issn.1006-754X.2020.00.038
建模、仿真、分析与决策     
增材制造中基于零件特征的分段自适应分层算法
王春香, 王耀, 郝志博
内蒙古科技大学 机械工程学院， 内蒙古 包头 014010
Segmentation adaptive slicing algorithm based on features of parts in additive manufacturing
WANG Chun-xiang, WANG Yao, HAO Zhi-bo
School of Mechanical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China
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摘要： 对一类不同部位有明显精度区别的零件进行增材制造时，相较于传统等厚分层算法，现有的分段等厚分层算法和自适应分层算法在弱化阶梯效应及减少分层和成型时间上各有所长，但它们在协调成型精度和成型效率方面并未达到最佳。为此，根据这类零件的立体光刻（stereo lithography，STL）模型，结合分段分层和自适应分层原理，提出了基于零件特征的分段自适应分层算法。沿成型方向按不同的精度要求对模型进行分段，并根据不同精度，利用以最大尖端高度调整分层厚度的方法对各段进行自适应分层。对斗齿类、链轨节类零件进行分层模拟试验，结果表明：基于零件特征的分段自适应分层算法在满足零件形状和精度等要求的前提下，较现有的分段等厚分层算法和自适应分层算法，其成型效率更高，稳定性及灵活性更好，且易于实现；在实际工程应用中可缩短零件的成型时间，促进增材制造向高效率方向发展。
Abstract: For a single component which has distinct precision difference in different part, the existing two algorithms of segmentation isopachous slicing algorithm and adaptive slicing algorithm have their respective advantages in weakening ladder effect and reducing slicing and molding time, compared with the traditional isopachous slicing algorithm in additive manufacturing, but they do not achieve the best in coordinating the molding precision and molding efficiency. Therefore, based on the STL（stereo lithography） model of this kind of parts, a segmentation adaptive slicing algorithm based on features of parts was proposed combined with principles of segmentation slicing and adaptive slicing. The model was segmented along the molding direction according to the accuracy requirements. Each segment was adaptively sliced using the method of adjusting the slicing thickness with the maximum tip height according to different accuracies. The slicing simulation tests of dipper tooth and track link were carried out. The results showed that on the premise of satisfying the requirements of part shape and precision, this algorithm had higher molding efficiency, better stability and flexibility compared with the segmentation isopachous slicing algorithm and adaptive slicing algorithm, and was easy to be implemented. In practical engineering application, it can shorten the molding time of parts and promote the development of additive manufacturing towards high efficiency.
收稿日期: 2019-09-26 出版日期: 2020-06-28
CLC:  TP 319  
基金资助: 内蒙古自治区自然科学基金资助项目（2017MS(LH)0530）；包头市科技计划项目（2019Z3004-6）
作者简介: 王春香（1962—），女，内蒙古包头人，教授，硕士，从事逆向工程和增材制造研究，E-mail：wcxcxw@126.com,https://orcid.org/0000-0002-0090-8575。
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引用本文:

王春香, 王耀, 郝志博. 增材制造中基于零件特征的分段自适应分层算法[J]. 工程设计学报, 2020, 27(3): 373-379.

WANG Chun-xiang, WANG Yao, HAO Zhi-bo. Segmentation adaptive slicing algorithm based on features of parts in additive manufacturing. Chinese Journal of Engineering Design, 2020, 27(3): 373-379.

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https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2020.00.038    或    https://www.zjujournals.com/gcsjxb/CN/Y2020/V27/I3/373

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