毕业设计（论文）-CA6140普通车床的数控化改造精选.doc

摘 要 , and it can improve enterprises’ competitive power. So it can takes its place in our way to a powerful manufacturing country. The main contents is: 1. The economical efficiency of the reform is evaluated in detail and the reforming scheme is maked according to misty optimum’s synthesize adjudicate principle. 2. The ball screw’s type, assembling, supporting, bearing type, and stepping motorof feeding system is designed. 3. The import and domestic NC systems were compared carefully, brought up a choose method and selected the NC system and automatic tool rest according to the function and accuracy index of reforming. 4. The complete electricity control diagram was drawn out according to the result of comparing CA6140’s electricity control system and principle with the reforming CJK6140-A’s NC system. 5. In order to protect the function of cutting a screw ,we carefully studied the impulse regulator and its connection with the principal axis, and draw out a techniquediagram. 6. Disassembled the lathe, throw away the old feeding system, repaired the main driving system ,covered plastics on sliding surface, shoveling or scraping and testing, counted or measured the parts of the lathe. 7. Draw out parts diagrams and assemble diagram. 8 .Methods of installing and testing of general purpose lathe’s numerically controlled reforming were put forward. 造的数控系统 29 6.1 数控 29 6.1.1 机床主机 30 4.1.2 驱动装置 30 4.1.3 辅助装置 30 4.1.4 数控装置系统 31 4.1.5 编程装置 31 6.2 微机控制系统硬件电路设计 31 6.2.1控制系统的功能要求 31 6.2.2硬件电路的组成 31 6.3 单板控制系统的设计 32 6.3.1 硬件配置 32 6.3.2 贮存器空间分配 32 6.3.3 I/O口地址分配 32 6.3.4 光电隔离电路 33 6.4 8031单片机简介 33 6.5 存储器扩展电路设计 34 6.5.1 程序存储器的扩展 34 6.5.2 数据存储器的扩展 34 6.6 译码电路设计 38 6.7 其他辅助电路设计设计 38 6.7.1 8031的时钟电路单片机的时钟的产生方式 38 6.7.2 复位电路 40 6.7.3 越界报警电路 40 6.7.4 掉电保护电路 41 第章 42 7.1 滚珠丝杠螺母副的选择 42 7.2 滚珠丝杠螺母副的调整 42 7.3 联轴器的安装 42 7.4 主轴脉冲发生器的安装 42 第章 42 致谢 43 参考文献----------------------------------------------------------44 第一章 前言 1.1问题提出 数控车床作为机电液气一体化的典型产品，是现代机械制造业中不可缺少的加工设备，在机械制造业中发挥着重要的作用，能解决