无锡职业技术学院毕业设计说明书 Ⅰ 数控车床主转动系统的设计 目 录 第一章 引言 ······························ 1 第二章 设计方案论证与拟定 ······················· 2 2.1 总体方案的论证 ······················· 2 2.2 总体方案的拟定 ······················· 2 2.3 主传动系统总体方案图及传动原理 ··············· 2 第三章 设计计算说明 ·························· 5 3.1 主运动设计 ························· 5 3.1.1 参数的确定 ······················ 5 3.1.2 传动设计 ······················· 6 3.1.3 转速图的拟定 ···