机械毕业设计（论文）-x5025立式升降台铣床的数控改造【全套图纸】

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1、二00八年南通纺院毕业设计说明书通过各专业全套毕业设计目录第一章前言··············································41.1概述················································41.2普通铣床数控化改造的条件·······························41.3普通铣床数控化改造的一般步骤····························4第二章总体方案的确定····································6第三章主传动系统设计·············

2、·······················73.1确定主轴传动功率······································73.2电动机的选择第32页共34页二00八年南通纺院毕业设计说明书··········································83.3主传动的调速过程······································8第四章伺服进给传动系统设计·····························104.1滚珠丝杠螺母副的设计和选用·····························104.1.1滚珠

3、丝杠螺母副的计算································104.1.2滚珠丝杠的安装····································164.1.3滚珠丝杠螺母副的支承方式····························164.2轴承的选用和计算······································174.2.1轴承的载荷计算······第32页共34页二00八年南通纺院毕业设计说明书·······························174.2.2轴承的派生轴向力计算··················

4、··············194.2.3轴承的轴向载荷计算·································194.2.4轴承的当量动载荷计算································194.2.5验算两轴承的寿命···································204.3同步带轮传动的设计和计算································204.3.1确定梯形齿同步带轮的基本参数·························204.3.2确定带的中心距···························

5、··········214.3.3选择带的类型······································22第32页共34页二00八年南通纺院毕业设计说明书4.4电机的选择和计算·······································224.1.1确定电机的类型·····································224.4.2伺服电机的计算·····································234.4.3电机的安装········································25第五章数控

6、铣床的PLC控制·······························265.1电气接口············································265.2铣床的安全互锁········································27第六章数控机床的润滑系统·······························29第32页共34页二00八年南通纺院毕业设计说明书6.1润滑的作用··········································296.2数控铣床的润滑系统···················

7、················29小结·····················································30参考文献·················································31[摘要］本文对一台普通铣床进行数控化改造，在改造后要达到高的静、动刚度；传动副之间的摩擦系数小，反向传动无间隙；输出转矩大等要求。对主传动部分不作太大的变动，保留原