机械电火花机床机械结构设计精选.doc

湘潭大学兴湘学院毕业论文 题 目：电火花机床机械结构设计 专 业：机械设计制造及其自动化 学 号： 姓 名： 指导教师： 完成日期： 2014年 5 月 目 录 中文摘要 ·································································1 英文摘要 ·································································2 一、引言 ································································3 1.1 题研究的目的和意义················································3 1.2 本设计国内外研究历史与现状 ·······································4 1.3 本设计拟解决的关键问题和研究方法··································5 1.4 电火花成型加工特点和适用范围······································5 二、 电火花成型机床总体结构设计 ·····································8 2.1 电火花成型机的结构 形式···········································8 2.2 电火花成型机结构设计···············································9 三、 主轴系统设计······················································13 3.1 主轴系统设计方案··················································13 3.2 电机的选择 ·······················································14 3.3 同步齿形带设计 ···················································19 3.4 滚珠丝杆副的设计··················································22 3.5 直线导轨的设计 ···················································27 四、工作台设计 ························································29 五、十字滑座设计······················································34 六、电极夹头设计·······················································37 七、机床润滑系统设计 ·················································40 八、工作液循环装置结构设计 ··········································42 参考文献·······························································.45 谢辞 ···································································46 附录·····································································47 翻译··························································52  摘 要： 介绍了电火花成型机床的加工原理、特点及其发展历程：它是通过脉冲直流电源不断产生火花放电来去除工件材料，且在工件与工具之间有绝缘液体介质。 分析并设计了电火花成型机床结构系统。机床总体布局为单柱立式，主轴采用步进电机拖动滚珠丝杆完成升降，利用步进电机多级可变细分技术，实现伺服系统的变频、变步距双重伺服调节，提高系统的跟踪能力和稳定性。进给系统采用滚珠丝杆和十字滑座实现工作台的横向、纵向移动