普通车床的数控改造（电气部分）摘要：文章针对现有常规普通车床的缺点提出了数控改造方案和微机数控系统设计提高加工精度和扩大机床使用范围，并提高生产率。本论文说明了普通车床的数控化改造的设计过程，简单介绍了机械部分的改造，包括机械传动系统中主传动系统、主轴编码器和进给传动系统的改造。较详尽地阐述了西门子 802S 数控系统的组成，介绍了通过利用西门子 802S 系统对微机数控部分进行设计改造，主要包括数控系统的选择、机床纵、横向进给传动系统设计计算、步进电机的选择以及电气控制部分设计等，结果表明，改造后的机床拥有较完备的数控功能和较好的加工性能，抗干扰能力强，可靠性提高，能适应更广泛的加工要求，满足了中小企业对形状复杂，精度要求较高零件的加工需要，大大提升了企业的竞争力，此项改造给企业每年带来直接经济效益近五十万，取得了很好的社会效益。关键词：普通车床 数控改造 步进电机 经济型数控系统 数控刀架CA6140 ordinary lathe of numerical control technology transformation (electrical) Abstract：Aiming at the existing shortcomings of conventional CA6140 ordinary lathe control scheme proposed and computer numerical control system design, the improvement of the machining accuracy and expand the scope of use of machine tools, and to increase productivity. This paper illustrates the general reform of CNC lathe, simple design process is introduced, including mechanical part of mechanical transmission system in main transmission system, and to drive shaft encoder system transformation. It expounded Siemens 802S numerical-controlled system, introduces the composition of Siemens 802S system by using the microcomputer control parts design, including the choice of system, NC machine tools in vertical and horizontal transmission system design, selection of stepping motor and electrical control part design, the results show that the machine has a complete NC machining function and good performance, strong anti-jamming capability, reliability, can adapt t...
