目录目录..................................................................................................................................11 绪论..............................................................................................................................71.1 课题背景...........................................................................................................71.2 机床改造的内容及意义...................................................................................81.2.1 研究意义.................................................................................................81.2.2 主要研究内容及技术路线......................................................................81.3 机床的经济型数控化改造主要解决的问题..................................................92 数控系统的选择........................................................................................................103 机械部分的改造........................................................................................................123.1 滚珠丝杠的选择..........................................................................................133.1.1 滚珠丝杠副的特点...............................................................................143.1.2. 纵向滚珠丝杠螺母副的型号选择与校核步骤...................................153.1.3．横向滚珠丝杠螺母副的型号选择与校核步骤.................................183.2 减速器箱体的设计......................................................................................193.2.1．轴的计算：（纵向输入轴）............................................................203.2.2．减速器箱体尺寸................................................................................213.3 轴承的选择..................................................................................................253.3.1．选型....................................................................................................253.3.2 校核........................
