题目：基于 PLC 的普通车床电气控制系统硬件设计
cylindrical, bore, thread end, and so on. The modern production machinery uses the control
technology which the machinery, the electricity, the hydraulic pressure, air operated unify.
The electric control technology plays the joint main center role, the application is most
widespread. Out of the ordinary machining prevalence of poor quality products, variety of
small, low grade, high cost, delivery and long, so this design object is an ordinary lathe,
designed a comprehensive and efficient PLC control system, improved lathe productivity,
control accuracy and product quality. PLC (programmable controller) as an industrial
control micro-computer, with its easy programming, simple operation, especially its high
controllability, etc., in the industrial production process has been widely used. The PLC
control system design is to replace traditional
Relay - contact device control system.
The article first introduces the lathe, and electrical control systems, PLC control
system and then introduces the hardware structure, operation principle and design of the
basic principles of PLC control systems and procedures, according to the task to design a
PLC control system, including the PLC elections type, hardware design and software
design. Finally, Siemens touch screen TP177B connected devices, monitoring and control
operations to achieve.
The key originally designed is that should be on the basis of control circuit of original
relay, through rational conversion , thus design PLC control procedure with same function.
Key Words：PLC ; Lathe; Electrical Control System; Touch Screen
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基于 PLC 的普通车床电气控制系统硬件设计...........................................................1
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