车床床头箱设计说明书

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1、机械制造装备设计课程设计计算说明书题目车床床头箱设计指导教师院系丽水学院班级机自081班学号姓名完成时间2011年12月1日32目录1.1已知条件...31.2结构式············································31.3绘制转速图········································31.3.1选定电动机···································31.3.2确定各级转速·································31.3.3确定各轴转速·······

2、··························41.3.4确定各变速组传动副齿数·······················42.1V带传动的计算·····································62.2传动轴的估算······································82.2.1确定各轴转速·································82.2.2初算传动轴直径······························9322.2.3主轴直径选取······················

3、·········92.2.4各传动组齿轮模数的确定·····················102.2.5验算小齿轮的模数···························123.1齿轮校验·········································133.2传动轴的校核·····································163.2.1传动轴的弯曲刚度····························163.2.2传动轴疲劳强度校核··························173.2.3传动轴Ⅱ的最大

4、挠度计算······················193.2.4传动轴Ⅱ的在支承处的倾角计算················213.3主轴组件的静刚度验算·····························223.3.1计算条件的确定······························223.4两支承主轴组件的静刚度验算·······················22323.5主轴疲劳强度校核·································264.箱体的结构设计···································

5、274.1箱体材料·····································274.2箱体结构·····································275.润滑与密封········································295.1润滑性能分析···································295.2润滑油的选择···································296.参考文献·········································3032

6、计算及说明结果321.1已知条件车床的主参数和基本参数如表1-1所示。表1-1工件最大回转直径正转最高转速电机功率公比转速级数Z32014203.01.41121.2结构式根据要求，转速级数为12级。根据结构式的确定原则：前多后少、前疏后密、前快后慢，及在降速传动中，防止齿轮直径过大而使径向尺寸常限制最小传动比；在升速时为防止产生过大的噪音和震动常限制最大转速比。可初步确定结构式为。1.3绘制转速图1.3.1选定电动机一般车床若无特殊要求，多采用Y系列封闭式三相异步电动机，根据原则条件选择Y100L2-4型Y系列笼式三相异步电动机，额定功率3.0，满载转速1420。

7、1.3.2确定各级转速由、、z=12，查《机械制造装备设计》表10.1标准数列确定各级转速：1400、1000、710、500、355、250、180、125、90、63、45、31.5r/min。1.3.3确定各轴转速结构式为电机Y100L2-4，额定功率3.0，满载转速142032在五根轴中，除去电动机轴，其余四轴按传动顺序依次设为Ⅰ、Ⅱ、Ⅲ、Ⅳ。Ⅰ与Ⅱ、Ⅱ与Ⅲ、Ⅲ与Ⅳ轴之间的传动组分别设为a、b、c。现由Ⅳ（主轴）开始，确定Ⅰ、Ⅱ、Ⅲ轴的转速：先来确定Ⅲ轴的转速（1）传动组c的变速范围为，结合结构式，Ⅲ轴的转速只有一种可能：125、180、250、355、