基于响应面法的单点增量成形过程变形能优化

发布时间：2018-05-21 11:42

本文选题：单点增量成形 + 响应面法　；参考：《中国机械工程》2017年07期

【摘要】：单点增量成形过程中的变形能对加工成本控制及工具头与材料之间的热效应和摩擦效应有直接影响。以典型圆锥形制件为研究对象,采用BBD实验方法,设计四因素三水平实验方案,利用响应面法研究工具头直径d、层间距Z、板厚t和成形角α对变形能的影响,并得到变形能的多元二次预测模型,最后以变形能最小为目标对该模型进行优化。实验结果表明:板厚对变形能的线性影响最显著,随着板厚的增大变形能增大,工具头直径越大所需变形能越大,成形角增大时所需的变形能增大;变形能最小的工艺参数组合是工具头直径4.0mm、层间距0.95mm、板厚0.57mm、成形角45°。
[Abstract]:The deformation energy in the process of single point incremental forming has a direct effect on the control of machining cost and the thermal and friction effects between the tool head and the material. Taking typical conical parts as the research object, a four-factor three-level experimental scheme was designed by using BBD method. The effects of tool head diameter d, layer spacing Z, plate thickness t and forming angle 伪 on deformation energy were studied by response surface method. The multivariate quadratic prediction model of deformation energy is obtained, and the model is optimized with the objective of minimum deformation energy. The experimental results show that the linear effect of plate thickness on deformation energy is the most significant. With the increase of plate thickness, the larger the diameter of the tool is, the greater the deformation energy is, and the more the deformation energy is when the forming angle increases. The process parameters of minimum deformation energy are: tool head diameter 4.0mm, layer spacing 0.95mm, plate thickness 0.57mm, forming angle 45 掳.
【作者单位】：西安理工大学机械与精密仪器工程学院;
【基金】：国家自然科学基金资助项目(51475366,51475146) 陕西省科技计划资助项目(2016JM5074)
【分类号】：TG306

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