X5025立式升降台铣床的数控改造设计 .pdf

本科毕业设计（论文）通过答辩

目录

第一章前言··············································4

1.1概述················································4

1.2普通铣床数控化改造的条件·······························4

1.3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····································7

3.1确定主轴传动功率······································7

3.2电动机的选择··········································8

3.3主传动的调速过程······································8

第四章伺服进给传动系统设计·····························10

4.1滚珠丝杠螺母副的设计和选用·····························10

4.1.1滚珠丝杠螺母副的计算································10

4.1.2滚珠丝杠的安装····································16

4.1.3滚珠丝杠螺母副的支承方式····························16

4.2轴承的选用和计算······································17

4.2.1轴承的载荷计算·····································17

4.2.2轴承的派生轴向力计算································19

4.2.3轴承的轴向载荷计算·································19

4.2.4轴承的当量动载荷计算································19

4.2.5验算两轴承的寿命···································20

4.3同步带轮传动的设计和计算································20

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本科毕业设计（论文）通过答辩

4.3.1确定梯形齿同步带轮的基本参数·························20

4.3.2确定带的中心距·····································21

4.3.3选择带的类型······································22

4.4电机的选择和计算·······································22

4.1.1确定电机的类型·····································22

4.4.2伺服电机的计算·····································23

4.4.3电机的安装········································25

第五章数控铣床的PLC控制·······························26

5.1电气接口············································26

5.2铣床的安全互锁········································27

第六章数控机床的润滑系统····