本科毕业设计目录摘要………………………………………………………………………………………ⅠABSTRACT…………………………………………………………………………………….Ⅱ1绪论............................................................................................................................................11.1课题背景..............................................................................................................................11.2现实意义..............................................................................................................................11.3设计任务..............................................................................................................................11.4总体设计方案分析..............................................................................................................22机械部分XY工作台及Z轴的基本结构设计...................................................................42.1XY工作台的设计................................................................................................................42.1.1主要设计参数及依据..................................................................................................42.1.2XY工作台部件进给系统受力分析............................................................................42.1.3初步确定XY工作台尺寸及估算重量........................................................................42.2Z轴随动系统设计..............................................................................................................53滚珠丝杠传动系统的设计计算.........................................................................................63.1强度计算............................................................................................................................63.2滚珠丝杠副的传动效率.....................................................................................................64直线滚动导轨的选型.............................................................................................................85步进电机及其传动机构的确定...........................................................................................95.1步进电机的选用................................................................................................................95.1.1脉冲当量和步距角....................................................................................................95.1.2步进电机上起动力矩的近似计算..............................................................................95.1.3确定步进电机最高工作频率....................................................................................105.2齿轮传动机构的确定........................................................................................................105.2.1传动比的确定...........................................................................................................105.2.2齿轮结构主要参数的确定........................................................................................115.3步进电机惯性负载的计算................................................................................................116传动系统刚度的讨论...........................................................................................................136.1根据工作台不出现爬行的条件来确定传动系统的刚...
