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盐城工学院本科生毕业设计说明书20091目录1前言.............................................................12总体设计方案.....................................................33具体设计说明.....................................................431塑件的测绘.....................................................432塑件的造型.....................................................433塑件材料性能分析...............................................634塑件的结构分析.................................................635型腔数的确定...................................................636浇口位置选择...................................................737浇口结构形式的选择.............................................838浇口尺寸的确定.................................................839浇注系统的平衡.................................................8310分型面的设计..................................................8311主流道的设计..................................................9312冷却系统设计..................................................10313导向装置......................................................11314顶出系统设计....