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Design Expert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0.474 mm,分层厚度0.279 mm,栅格角度51.9°,最大弹射距离为402.8 mm,与模型的预期值396.17 mm基本相符。
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 of toy instruments as an example, the changing of manufacturing process parameters affect the distance 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 of a 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 employing 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.
出处
《制造技术与机床》
北大核心
2016年第10期33-37,共5页
Manufacturing Technology & Machine Tool
基金
国家自然科学基金(51405120)
关键词
熔融沉积成形
弹性性能
工艺参数
响应面
fused deposition modeling
elastic properties
process parameters
response surface methodology
