Micro-deformation of the hot bed of FDM printer and compensation printing method
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摘要: FDM型打印机中热床平台的水平度与平整度是保证成型件顺利打印的重要前提，针对热床加热逐渐变形以及难以获得良好第一层问题，使用ANSYS对热床平台进行热-力间接耦合仿真模拟了变形过程，通过BL touch接触传感器对不规则热床表面实时采集15个点数据，使用拉格朗日与双三次插值算法对采样点进行曲率插值，对生成的网床三角面片化后赋予1 mm厚度并使用切片算法切片形成补偿基底代码，在双喷头打印机上喷头1使用水溶性PVA材料将基底以支撑形式打印，喷头2打印实体模型。实验结果表明，该方法具有原理简单，去除补偿材料方便，打印模型精度提高等特点，特别是对大型FDM打印机易变形的热床有一定的帮助。Abstract: The levelness and flatness of the hot bed platform in FDM type printers are important prerequisites to ensure the smooth printing of the molded parts. In view of the gradual deformation of the hot bed heating and the difficulty of obtaining a good first layer, ANSYS is used to perform thermal-mechanical indirect coupling of the hot bed platform. The deformation process was simulated by simulation. The BL touch contact sensor was used to collect 15 point data on the surface of the irregular hot bed in real time. The Lagrangian and bicubic interpolation algorithms were used to interpolate the curvature of the sampling points, and the generated mesh bed was triangular. Then, the thickness of 1mm is given and the slicing algorithm is used to form the compensation substrate code. On the dual-nozzle printer, nozzle 1 uses water-soluble PVA material to print the substrate in a supported form, and nozzle 2 prints the solid model. The experimental results show that this method has a simple principle and can remove the Compensation materials are convenient, and the printing model accuracy is improved, especially for the easily deformed hot bed of large FDM printers.
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Key words:
- FDM printer /
- irregular hot bed /
- creep deformation /
- ANSYS /
- thermocouple /
- compensation leveling
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[1] 张伟, 张起贵, 何小刚. 基于ARM的3D打印机热床自动校正技术的研究与设计[J]. 现代电子技术, 2019, 42(17): 142-146. [2] Simpson M, Khoury S. Inexpensive piezoelectric elements for nozzle contact detection and build platform leveling in FFF 3D printers[J]. Inventions, 2018, 3(1): 8. doi: 10.3390/inventions3010008 [3] 张毅, 王莎, 李盼盼, 等. 基于MEMS技术FDM 3D打印机自适应调平系统[J]. 工程塑料应用, 2017, 45(8): 70-74. [4] Kim B C. Development of optical leveling system using quarter photodetector[J]. Journal of the Korean Society of Manufacturing Process Engineers, 2018, 17(6): 111-116. doi: 10.14775/ksmpe.2018.17.6.111 [5] 唐统海, 刘豫章, 陈楚技, 等. 一种FDM3D打印机及其自动调平打印方法和系统: 中国, CN105751518A[P]. 2016-07-13. [6] Pehde C E, Bennett J, Peck B L, et al. Development of a 3-D printing laboratory for foot and ankle applications[J]. Clinics in Podiatric Medicine and Surgery, 2020, 37(2): 195-213. doi: 10.1016/j.cpm.2019.12.011 [7] 朱曦. 打印平板调平方法及装置: 中国, WO2016173066A[P]. 2016-3-11. [8] Lei C, Li H, Zheng G W, et al. Thermal-mechanical loading sequences related creep aging behaviors of 7050 aluminum alloy[J]. Journal of Alloys and Compounds, 2018, 731: 90-99. doi: 10.1016/j.jallcom.2017.10.035 [9] 聂明争, 范勤, 王雄, 等. FDM技术中加热底板样式对翘曲变形的影响研究[J]. 工程设计学报, 2018, 25(4): 420-425,440. doi: 10.3785/j.issn.1006-754X.2018.04.008 [10] Hsieh M, Lin J. Research on design of heating system of continuous heat transfer machine[C]. 2018 International Conference on Mathematics, Modeling, Simulation and Statistics Application (MMSSA 2018). Atlantis Press, 2019: 179-182. [11] Bitriá Ribes R. Upgrading the electronics of a robotic arm 3D printer: modification of the control electronics of a 3D printer based on ABB IRB-1200 90/5[D]. Vaasa: Yrkeshögskolan Novia University of Applied Sciences, 2021. [12] Yang Y, Dong Z, Meng Y, et al. Data-driven intelligent 3D surface measurement in smart manufacturing: review and outlook[J]. Machines, 2021, 9(1): 13. doi: 10.3390/machines9010013 [13] Yu H. Improving desktop FDM 3D printer by user-centered design[D]. Finland: Aalto University, 2019. [14] 史可, 苏婷婷, 王战勇. 可降解塑料聚乳酸(PLA)生物降解性能进展[J]. 塑料, 2019, 261(3): 36-41. -
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