毕业设计（论文）-4040S数控雕铣机电主轴系统设计.doc

目 录 1．绪论··························································· 4 1．1 数控雕铣机的概述········································· 4 1．2 数控雕铣机和数控铣床的区别······························· 4 1．3 数控雕铣机和数控雕刻机的区别····························· 5 1．4 数控雕铣机的发展与现状··································· 6 1.4.1 典型数控雕铣机的介绍······························· 6 2．4040S数控模具雕铣机的简介····································· 7 2．1 4040S数控模具雕铣机的工艺范围·························· 8 2．2 4040S数控模具雕铣机的特点······························ 8 2．3 4040S数控模具雕铣机的主要技术参数······················· 8 3．4040S数控模具雕铣机布局设计方案································ 9 3．1 机床总体布局设计·········································· 9 3．2 设计方案分析·············································· 10 4．电主轴单元简介················································· 11 4．1 电主轴概述··············································· 12 4．2 电主轴对现代数控机床发展的意义··························· 13 4．3 电主轴的基本结构········································· 14 5．电主轴系统的设计················································ 15 5．1 Z向主传动系统的方案设计··································· 15 5．1．1 电主轴的冷却与润滑································ 15 5．1．2 3KW电主轴的安装··································· 16 5．2 Z向进给系统方案设计······································ 17 5．2．1 滚珠丝杠副的选择································· 17 5．2．2 滚珠丝杠的支承结构······························· 18 5．2．3 支撑轴承的选择··································· 18 5．2．4 滚珠丝杠的制动装置······························· 19 5．2．5 Z向伺服电机与进给丝杠的联结结构··················· 19 5．2．6 Z向导轨········································· 19 6．主轴系统零部件的计算与校核···································· 20 6．1 主轴系统的重力计算····································· 20 6．2 主轴切削力计算··········································· 21 6．3 滚珠丝杠副的选择计算···································· 22 6．4 Z向进给伺服电机功率的计算及选择························ 31 7. 数控编程软件Mastercam简介···································· 37 小结···································