毕业设计S7200 PLC在4M机床应用.docVIP

沈阳化工大学 本科毕业论文 题 目： S7-200 PLC在4M机床的应用 院 系： 信息工程学院 专 业： 电气工程及其自动化 班 级： 0801 学生姓名： 指导教师： 邢杰 论文提交日期：2012 年 6月 21 日 论文答辩日期：2012 年 6月 26 日 摘要 目前可编程控制器（PLC）广泛应用于数控机床等工业的控制中，主要是因为使用PLC来代替继电器控制完成逻辑控制，使数控机床结构更紧凑，功能更丰富，相应速度和可靠性大大提高。可编程控制器是一种专为在工业环境下应用而设计的数字运算操作的电子系统，它采用一种可编程程序的储存器，在其内部储存执行逻辑运算、顺序控制、定时、计数和算术运算等操作的指令，通过数字式、模拟式的输入输出来控制各种类型的机械设备的生产过程。立式车床是针对特定工件，进行特定加工而设计的一种高效率的自动化专用加工设备，主要用于加工重型工件和不易在卧式车床上装夹的工件，太重的工件在卧车不易装夹，由于本身自重，对加工精度有影响，采用可以解决上述问题用于加工径向尺寸大而轴向尺寸相对较小，形状复杂的大型和重型工件。Abstract The programmable controller ( PLC ) is widely used in CNC machine tools and other industrial control, mainly because of the use of PLC to replace the relay control logic control of NC machine tool, that results in a more compact, more functions, the corresponding speed and reliability are greatly improved. Programmable controller is a designed for applications in the industrial design environment of electronic digital computing operating system, it uses a programmable memory, in its internal storage implementation of logical, sequential control, timing, counting and arithmetic operations such as instruction, through digital, analog input output the control of various types of machinery and equipment of the production process. Vertical lathe is targeted to specific work, specific processing and the design of a high efficient automation equipment for processing, mainly for processing large diameter, the short length of large, heavy workpieces and not easy in horizontal lathe with the clamping of the workpiece, the workpiece is too heavy in the sleeper is not easy to clip, because of their weight, the processing accuracy influence of the vertical lathe, can solve the above problem. Common 4M vertical lathe processing of large mechanical equipment is important equipment for processing large size, radial and axial size is relatively small, large and heavy workpiece wit