6-ca6140b车床数控化改造设计毕业设计.rar

6-CA6140B车床数控化改造设计毕业设计

　　　　　　　　　　　　　　　　　　摘  要
　　　数控机床作为机电一体化的典型产品,在机械制造业中发挥着巨大的作用, 很好地解决了现代机械制造中结构复杂、精度高、批量小、多变零件的加工问题, 且能稳定产品质量,大幅度提高生产效率。但由于一台全功能的数控车床价格较贵,而且在许多具体应用场合其功能不能充分利用。我国作为机床大国,对C6140普通车床进行数控化改造,使之尽可能提高自动化程度, 保证加工质量,减轻劳动强度,提高经济效益, 是一条广泛推广数控技术的良好途径。本次设计是对C6140普通车床进行数控化改造，其现实意义在于如何寻找一种可行的、有推广价值的设备改造方法，对传统机械制造行业的技术装备进行技术提升。对C6140普通车床的数控化改造主要有两个方面的设计：机械改造和控制部分。机械部分的设计主要是对横向和纵向进给系统的改造，改造后的车床把车床的主运动和进给运动分离开来, 主电机的作用仅仅是带动工件旋转,而刀架的进给运动则是由步进电机直接带动车床的纵向和横向丝杠来实现。而控制部分主要是实现对机械部分的自动化控制，它包括纵向和横向的进给，螺纹加工，行程控制，键盘输入及数码管显示，光电隔离，功率放大，报警，急停，复位等。
关键词：数控改造，滚珠丝杠，数控机床，自动化，步进电机

　　　　　　　　　　　　　　　　ABSRTACT
　　　CNC machine tools as mechatronics typical products in the machinery manufacturing industry plays a huge role, a good solution to the complex structure of modern machinery manufacturing, high precision, small batch, changing parts processing problems, and can stabilize the product quality, significantly improve production efficiency. However, a full-featured CNC lathes more expensive, but its function in many specific applications can not be fully utilized. China is a big country of the machine, C6140 lathe CNC transformation, so as much as possible to improve the degree of automation, quality assurance process, reduce labor intensity, improve economic efficiency, is a good way for a widely CNC technology. The design C6140 lathe CNC transformation, its real significance lies in how to find a viable, promote the value of equipment modification method, technology and equipment technology to enhance the traditional machinery manufacturing industry. Transformation of NC lathe C6140 two aspects of the design: mechanical modifications and the control section. The mechanical part of the design horizontal and vertical feed system transformation after transformation, lathe the main movement lathe and feed movement separate from the main motor is driven rotation of the workpiece, and the feed motion of the tool holder is directly driven by a stepping motor lathes and vertical and horizontal screw. The control section is to achieve the automatic control of the mechanical part, which includes vertical and horizontal feed, thread cutting, stroke control, keyboard input, and digital display, optical isolation, power amplifier, alarm, emergency stop, reset, etc..
Keywords:numericaltransformation,ballscrew,CNCmachinetoolsautomation,steppemotor   目  录
1. 绪论---------------------------------------------------------1
1.1 数控系统发展简史-----------------------------------------1
1.2 国内数控机床状况分析-------------------------------------1
1.3 数控系统的发展趋势---------------------------------------1
1.4 机床数控化改造的必要-------------------------------------2
2. 总体设计方案-----------------------------------------------5
2.1机床数控化改造的必要--------------------------------------------------------5
3. 进给系统的设计与计算部分---------------------------------7
3.1纵向进给系统的设计与计算---------------------------------7
3.2横向进给系统的设计与计算---------------------------------15
4.控制系统硬件电路的设计------------------------------------22
4.1 控制系统硬件的基本构成-----------------------------------22
4.2 控制系统的设计-------------------------------------------23
4.3 MCS-51系统程序扩展---------------------------------------24
4.4 应用软件及设计程序---------------------------------------29

5.结论-----------------------------------------------------------45
参考文献---------------------------------------------------------46
致谢--------------------------------------------------------------47