基于微滴喷射的3DP工艺中渗透误差补偿算法

doi:10.3901/JME.2021.21.269

机械工程学报 ›› 2021, Vol. 57 ›› Issue (21): 269-278.doi: 10.3901/JME.2021.21.269

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基于微滴喷射的3DP工艺中渗透误差补偿算法

杨伟东^1,2, 高翔宇¹, 刘卫胜^1,2, 檀润华², 张争艳^1,2

1. 河北工业大学机械工程学院天津 300401;
2. 河北工业大学国家技术创新方法与实施工具工程技术研究中心天津 300401

收稿日期:2020-12-01 修回日期:2021-06-08 出版日期:2021-11-05 发布日期:2021-12-28
通讯作者: 刘卫胜(通信作者),男,1963年出生,讲师。主要研究方向为机电一体化。E-mail:ws.liu@163.com
作者简介:杨伟东,男,1972年出生,博士,教授,硕士研究生导师。主要研究方向为增材制造,机器视觉。E-mail:yangweidong@hebut.edu.cn;高翔宇,男,1995年出生,硕士研究生。主要研究方向为增材制造。E-mail:xiangyu9508@163.com;檀润华,男,1958年出生,博士,教授,博士研究生导师。主要研究方向为创新设计。E-mail:rhtan@hebut.edu.cn;张争艳,男,1984年出生,博士,副教授,博士研究生导师。主要研究方向为增材制造。E-mail:zzy@hebut.edu.cn
基金资助:
国家自然科学基金青年基金（61802108）、河北省自然科学基金专项（E2017202296）和河北省自然科学基金（E201602297）资助项目。

The Compensation Algorithm of Infiltration Error of the Droplet Injection in 3DP Technique

YANG Weidong^1,2, GAO Xiangyu¹, LIU Weisheng^1,2, TAN Runhua², ZHANG Zhengyan^1,2

1. School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401;
2. National Engineering Research Center for Technological Innovation Methods and Tool, Hebei University of Technology, Tianjin 300401

Received:2020-12-01 Revised:2021-06-08 Online:2021-11-05 Published:2021-12-28

摘要/Abstract

摘要： 在微滴喷射3DP工艺中，由于粘结剂渗透引起的误差是影响打印模型精度的主要因素之一，为了得到高精度的打印模型，减小渗透误差的影响，需要对渗透误差进行补偿。因此，针对微滴喷射工艺渗透误差提出了一种补偿算法，将渗透误差分解成为Z方向以及XY方向的两个分量后，依次对它们进行补偿。采用基于点偏移的补偿方法对Z方向渗透误差分量进行补偿，保证了STL模型补偿前后的完整性，简化了计算模型，实现了Z方向误差的补偿。然后采用基于分层平面偏移的分层补偿方法对XY方向渗透误差分量进行补偿，在分层过程中依据STL模型每个层面上三角面片角度特征进行相对应的分层平面偏移的补偿计算，实现了STL模型XY方向渗透误差分量的补偿。经过试验验证：通过先后对设计样件进行Z方向渗透误差分量补偿与XY方向渗透误差分量补偿计算，实现了对STL模型的渗透误差补偿功能。补偿后的尺寸误差以及圆度误差明显减少，综合补偿后打印样件尺寸更加接近设计尺寸，使其精度得到了提升。

关键词: 3DP工艺, 渗透误差, 误差补偿, 打印精度

Abstract: In the 3DP process based on microdroplet jetting, the error caused by binder penetration is one of the main factors affecting the accuracy of the printing model. In order to obtain a high-precision printing model and reduce the influence of the infiltration error, the infiltration error should be compensated. For this reason, a compensation algorithm for the permeability error of microdroplet injection process is put forward. The penetration error is decomposed into two components of Z direction and XY direction, and then they were compensated one by one. The compensation method based on point migration is adopted to compensate error component in Z direction infiltration, which ensures the integrity of STL model before and after compensation, simplifies the calculation model, and realizes the high-efficiency compensation of Z direction error. Then, the stratified compensation method based on the stratified plane migration is used to compensate the infiltration error component in XY direction. In the stratification process, the corresponding stratified plane migration is calculated according to the angle characteristics of the triangular surfaces on each layer of the STL model, and the compensation of the infiltration error component in XY direction of the STL model is realized. The experiments verify that the function of infiltration error compensation for STL model can be realized through the calculation of infiltration error component compensation in Z direction and XY direction for the design sample successively. After compensation, the size error and roundness error are significantly reduced. After comprehensive compensation, the sizes of the printed sample are closer to the design sizes, so that their precision is improved.

Key words: 3DP process, infiltration error, error compensation, printing accuracy

中图分类号:

TH164

杨伟东, 高翔宇, 刘卫胜, 檀润华, 张争艳. 基于微滴喷射的3DP工艺中渗透误差补偿算法[J]. 机械工程学报, 2021, 57(21): 269-278.

YANG Weidong, GAO Xiangyu, LIU Weisheng, TAN Runhua, ZHANG Zhengyan. The Compensation Algorithm of Infiltration Error of the Droplet Injection in 3DP Technique[J]. Journal of Mechanical Engineering, 2021, 57(21): 269-278.

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基于微滴喷射的3DP工艺中渗透误差补偿算法

The Compensation Algorithm of Infiltration Error of the Droplet Injection in 3DP Technique

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