Quantifying the Shape Complexity of Cast Parts
Quantifying the Shape Complexity of Cast Parts
复制标题
量化铸造零件的形状复杂性
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
B. Ravi
中科院分区：
文献类型：
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作者：
D. Joshi;B. Ravi
摘要具有内部和外部特征以及不同壁厚的复杂形状的金属零件通过铸造工艺生产是最经济的。然而，较高的形状复杂性会导致较低的可制造性，意味着次优的质量、较高的成本和较低的生产率。因此，对替代零件设计的形状复杂性进行定量评估和比较对于可制造性设计非常有用。在这项工作中，我们使用基于零件几何参数的加权标准来定义形状复杂性因子，例如核心特征的数量、零件的体积和表面积、核心体积、截面厚度和拉延距离。标准的系数是通过使用实际形状复杂性进行回归分析来计算的，实际形状复杂性被定义为与加工立方体等简单形状相比，模具制造的额外成本，并使用模具制造商的实际成本数据进行计算。使用 CAD 模型和 40 英寸的成本数据进行回归。
AbstractComplex shaped metal parts with internal and external features and varying wall thickness are most economically produced by casting process. A higher shape complexity however, leads to lower manufacturability, implying sub-optimal quality, higher cost, and reduced productivity. Quantitative evaluation and comparison of shape complexity of alternative part designs can therefore be very useful in design for manufacturability. In this work, we define shape complexity factor using weighted criteria based on part geometry parameters such as number of cored features, volume and surface area of part, core volume, section thickness and draw distance. The coefficients of the criteria are computed by regression analysis using the actual shape complexity, which is defined as the additional cost of tooling manufacture compared to the machining of a simple shape like a cube, and computed using actual cost data from the tooling manufacturer. The regression was carried out using CAD models and cost data of 40 in...