机械5

核桃脱核机设计 摘要：本文首先提出核桃机械剥核取仁的必要性和重要性。提出了双齿盘一齿板式剥核原理及最优设计参数，并研制了核桃脱壳机。其中主要包括总体方案的确定，各部件的设计与计算，总装与零部件装图纸；完成设计后，分析了它的特点、优势，以及存在的不足，需要改进，提出了一些改进措施。 关键词：核桃；机械；剥核 Desig
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ng 目录 摘要.................................................................1 1前言.................................................................1 2设计的目的、意义、国内外动态....................................2 3核桃脱核机的总体方案的确定......................................2 3.1三种挤压破裂方法的比较.....................................2 3.1.1核桃的旋转角度..................................................3 3.1.2核桃的压缩变形曲线............................................4 3.2双齿盘齿板式剥壳原理及最优设计参数...........................5 3.2.1剥壳原理.........................................................5 3.2.2理想挤入角.........................................................6 3.3偏心圆弧板最佳半径的确定.....................................7 3.4主要组成部分特点...............................................7 3.4.1电动机...............................................................7 3.4.2皮带传动装置.......................................................7 3.4.3轴.................................................................7 4传动设计计算、零部件的强度刚度计算............................7 4.1传动设计计算.............................................7 4.1.1电动机的参数......................................................7 4.1.2 V带轮的设计选择计算...........................................8 4.1.3轴的设计计算.....................................................10 4.2零件的强度刚度计算.........................................12 4.2.1精确校核轴的疲劳强度.........................................14 4.2.2轴承的校核.....................................................17 4.2.3键的选择........................................................18 5结构设计..........................................................18 5.1机体的机构设计.................................................18 5.2入料斗的结构设计..............................................20 6存在的问题及改进措施..................................................20 7结论.................................................................22 参考文献.................................................................22 致谢.................................................................23