目录第一章系统总体方案的分析与拟订...................................................................41.1系统总体改造方案的确定........................................................................41.2机械传动系统的改造方案的确定............................................................41.3设计参数....................................................................................................4第二章进给传动系统传动方案设计...................................................................62.1进给系统的概论........................................................................................62.2进给伺服系统机械部分的结构改造设计方案........................................6第三章运动设计...................................................................................................83.1机床主传动设计及参数的确定................................................................8第四章丝杆螺母机构的选择和计算.................................................................134.1计算主切削力极其切削力计算..............................................................134.2导轨摩擦力的计算..................................................................................144.4确定滚珠丝杠副的导程..........................................................................14第五章向步进电动机的计算和选型.................................................................165.1等效转动惯量计算..................................................................................16第六章丝杆螺母刚度计算.................................................................................206.1杠抗压刚度..............................................................................................206.2支承轴承组合刚度..................................................................................20第七章数控系统设计.........................................................................................257.1数字控制系统.........................................................................................257.2数控系统的硬件特点：........................................................................257.3控制系统图及芯片的选择....................................................................267.4I/O接口的扩展......................................................................................267.5存储器及系统扩展设计。....................................................................277.6键盘及键盘接口设计............................................................................297.7显示器接口设计.....................................................................................307.8步进电机控制电路................................................................................32参考文献...............................................................................................................38致谢...................................................................................................................39摘要本文介绍了普通数控机床中CA6140车床进给系统的设计过程，主要为机械元件的设计，包括滚珠丝杠、轴承、步进电机、和齿轮传动比的计算、选择与应用。针对现有常规CA6140普通车床的数控改装方案，纵向、进给系统进行数控控制，并要求达到纵向最小运动单位为0.01mm每脉冲，刀架要是自动控制的自动转位刀架，要能自动切削螺纹。关键词：齿轮；进给丝杠；步进电机；前言我国目前机床总量为380万余台，...
