毕业论文最大加工直径φ250普通车床主轴箱部件设计课程设计任务书.doc

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1、目录1.课程设计任务书·····························································42.绪论·······································································63．设计计算···································································63.1车床的规格系列和用处································

2、···················63.2操作性能要求···························································74.主动参数参数的拟定·························································74.1确定传动公比φ·························································74.2主电动机的选择································

3、·························75.变速结构的设计·····························································85.1主变速方案拟定··························································85.2变速结构式、结构网的选择·················································85.2.1确定变速组及各变速组中变速副的数目···············

4、·················85.2.2变速式的拟定······················································95.2.3结构式的拟定48······················································95.2.4结构网的拟定······················································95.2.5结构式的拟定·······································

5、··············105.2.6结构式的拟定·····················································105.2.7确定各变速组变速副齿数···········································115.2.8绘制变速系统图···················································136.结构设计······················································

6、············136.1结构设计的内容、技术要求和方案··········································136.2展开图及其布置·························································146.3I轴（输入轴）的设计······················································146.4齿轮块设计··············································

7、···············146.5传动轴的设计···························································156.6主轴组件设计···························································166.6.1各部分尺寸的选择·················································166.6.2主轴材料和热处理··································

8、···············166.6.348主轴轴承·························································176.6.4主轴与齿轮的连接························