（毕业设计 页数：26 字数：7584）CK7525数控车床电动刀架自动换刀控制

摘要：数控车床今后将向中高当发展，中档采用普及型数控刀架配套，高档采用动力型刀架，兼有液压刀架、伺服刀架、立式刀架等品种，预计近年来对数控刀架需求量将大大增加。数控刀架的发展趋势是：随着数控车床的发展，数控刀架开始向快速换刀、电液组合驱动和伺服驱动方向发展。 本部分主要对八工位卧式电动刀架的机械设计和PMC控制部分的设计。并对以上部分运用AUTOCAD做图，对电动刀架有更直观的了解。

关键字：数控车床；电动刀架；PMC；八工位

Abstract：Numerical control there is in the future lathe to in will develop,the middle-grade to adopt popular numerical control knife rest form a complete set, adopt the motive force type knife rest top-gradly, have such varieties as knife rest of hydraulic pressure , servo knife rest ，vertical knife rest ,etc. concurrently, it is estimated that will increase to numerical control knife rest demand greatly in recent years. The development trend of the numerical control knife rest is: With the development of numerical control lathe, numerical control knife rest begin to change one hundred sheets , electric liquid is it urge and urge direction develop while being servo to make up fast. Some originally design and is it continue electricity to use to eight worker location vertical electronic machinery of knife rest mainly- exposed to control system control some
designs. And use AUTOCAD to pursue to the above part , have an more ocular knowledge of electronic knife rest.

Keywords ： Numerical control knife rest ； Electronic knife rest ；Eight engineering ; Program machining control

目录 1绪论………………………………………………………………………………
2 CK7525数控车床介绍…………………………………………………………
2.1主要参数……………………………………………………………………
3电动刀架…………………………………………………………………………
3.1工作原理……………………………………………………………………
3.2刀架动作顺序………………………………………………………………
3.3外形及安装尺寸……………………………………………………………
3.4安装与调试…………………………………………………………………
3.5拆装顺序及附图……………………………………………………………
3.5.1拆卸顺序……………………………………………………………
3.5.2装配顺序……………………………………………………………
3.6电气说明……………………………………………………………………
3.6.1采用8421编码器发讯的刀架接线…………………………………
3.6.2采用霍尔编码器发讯的刀架接线…………………………………
3.7刀架使用的注意事项…………………………………………………
4电动刀架PLC控制设计…………………………………………………………
4.1电动刀架控制要求…………………………………………………………
4.2 PLC控制流程图……………………………………………………………
4.3 PLC软件设计………………………………………………………………
4.4常见故障及排除方法………………………………………………………
结论…………………………………………………………………………………
致谢…………………………………………………………………………………
参考文献……………………………………………………………………………

1绪论
为完成对工件的多工序加工而设置的存储及更换刀具的装置称为自动换刀装置(Automatic Tool Changer，ATC)。自动换刀装置应当满足的基本要求为：
1. 刀具换刀时间短且换刀可靠
2. 刀具重复定位精度高
3. 足够的刀具储存量
4. 刀库占地面积小
数控刀架是数控车床、车削中心等主机产品的关键功能部件，如图7.11所示。随着数控机床的发展，数控刀架向快速换刀、电液组合驱动和伺服驱动多方向发展，而且需求量日益增大，据估计国内中高档数控刀架年需求量约1000台左右。经济型数控机床用的刀架国内产品尚可满足需求，但用于中高档数控机床的刀架，其技术水平与生产能力距国内需求还有一定差距。该类刀架要求换位速度快，定位精度高，刀具布局干涉小，刀架刚性好，结构简单易维修，连接尺寸互换性好，可靠性强，目前主要依靠进口。