机床主传动系统毕业设计说明书.doc

目录 1.摘要·······································································3 2.绪论·······································································3 3．设计计算···································································3 3.1车床的规格系列和用处···················································3 3.2操作性能要求···························································4 4.主动参数参数的拟定·························································4 4.1 确定传动公比φ·························································4 4.2 主电动机的选择·························································4 5.变速结构的设计·····························································4 5.1 主变速方案拟定··························································4 5.2 变速结构式、结构网的选择·················································4 5.2.1 确定变速组及各变速组中变速副的数目································5 5.2.2 变速式的拟定······················································5 5.2.3 结构式的拟定······················································5 5.2.4 结构网的拟定······················································5 5.2.5 结构式的拟定·····················································6 5.2.6 结构式的拟定·····················································6 5.2.7 确定各变速组变速副齿数···········································8 5.2.8 绘制变速系统图···················································9 6.结构设计··································································9 6.1 结构设计的内容、技术要求和方案··········································9 6.2 展开图及其布置·························································9 6.3 I轴（输入轴）的设计······················································10 6.4 齿轮块设计·····························································10 6.5 传动轴的设计···························································10 6.6 主轴组件设计···························································12 6.6.1 各部分尺寸的选择·················································12 6.6.2 主轴材料和热处理·················································12 6.6.3 主轴轴承····················································