
主题:特种加工技术! Special Machining Technology
FDM工艺参数对零件弹性性能的影响
李强刘志峰赵鹏
(合肥工业大学机械与汽车工程学院,安徽合肥230009)
摘要:为提高熔融沉积成形零件的弹性性能,应用响应面法对影响零件弹性性能的工艺参数进行优化分
析。以一套玩具器械为例,通过改变制造过程中的工艺参数,影响小球被弹射的距离,反映弹性棒的弹性性能。选定路径宽度、分层厚度、栅格角度3个因素进行单因素试验,确定小球弹射距离的较大值,根据试验结果设计中心组合试验,利用DesignExpert建立数学模型,进行方差分析、模型评价,确定最优工艺参数。结果表明:路径宽度0.474mm,分层厚度0.279mm,栅格角度51.9°,最大弹射距离为402.8mm,与模型的预期值396.17mm基本相符。
关键词:熔融沉积成形弹性性能:工艺参数;响应面
中图分类号:TH162+.1
文献标识码:A
DOI:10.19287/j.cnki.10052402.2016.10.005
EffectofFDMprocessparameters onelasticproperties ofparts
LI Qiang,LIU Zhifeng,ZHAO Peng
(School of Mechanical and Auto Engineering, Hefei University of Technology, Hefei 230009,CHN)
Abstract: Response surface methodology was used to analyze the process parameters of effecting elastic properties
of parts with the aim of improving the elastic properties of fused deposition modeling parts. Taking a set oftoyinstruments as anexamplethe changingofmanufacturingprocessparameters affectthedistance of a thrown ball, and the elastic property of the elastic rod is reflected by the distance. In single factor experiment, raster width, layer thickness, raster angle were selected to detect the larger distance ofa thrown ball, a central composite design was established based on the test results, mathematical model, variance analysis, model evaluation were introduced to obtain the optimal process parameters by emplo ying Design Expert. The results indicated that the optimal process parameters were obtained as: raster width 0.474 mm, layer thickness 0.279 mm, raster angle 51.9°, maximum throwing distance 402.8 mm, which was basically consistent with the predicted one of 396. 17 mm.
Keywords;fused deposition modeling; elastic properties; process parameters; response surface methodology
3D打印是一种新颖的零件制造方式,采用层层堆积、增材制造的方法制造零件。熔融沉积成形(FDM)【4]韩若冰,沙桂英,黄高仁.揽拌摩擦加工处理对AZ31镁合金高应变率变形行为的影响[J].轻合金加工技术,2016,44(1):58-63
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*国家自然科学基金(51405120)
利通技求与机康 2016年第10期
万方数据
是利用高温将丝材(ABS、PLA等)加热融化,使其在熔融状态下从喷嘴挤出,依靠挤出丝材的自粘结性逐层
科学与工程,2015,38(8);143-148.
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第一作者:李震,男,1979年生,硕士,副教授,高级技师,从事机械制造及新型材料应用研究。
(编辑汪艺)
文章编号:161008
(收稿日期:2016-05-10)
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