M7120平面磨床PLC课程设计说明书

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综合课程设计说明书

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XXXX年XX 月XX日

目录

摘要 (4)

前言 (7)

第一章M7120平面磨床简介 (7)

1.1 M7120平面磨床控制原理图 (7)

1.2 M7120平面磨床结构及功能 (9)

1.3 M7120平面磨床的电气控制分析 (11)

第二章 PLC简介 (11)

2.1 PLC的发展 (11)

第三章硬件设计 (11)

3.1 PLC的物理结构 (13)

3.2 PLC的外部接线图 (13)

第四章M7120平面磨床的PLC控制 (13)

4.1 M7120平面磨床PLC输入/输出分配 (13)

4.2 M7120平面磨床PLC控制接线图 (14)

4.3 M7120平面磨床PLC流程图 (15)

4.4 M7120平面磨床梯形图 (16)

4.5 M7120平面磨床在s7—200中的仿真 (19)

4.6 M7120平面磨床PLC指令语句 (20)

总结 (21)

参考文献 (22)

摘要

本次设计的内容主要是利用PLC（Programmable Logic Controller）对M7120平面磨床的控制部分进行改造。我先对本次的设计进行了总体的思考和分析，使自己对M7120平面磨床的基本结构、运动情况、加工工艺要求等有一定的了解。M7120平面磨床主要有车身、主轴变速箱、尾座进给箱、丝杠、光杠、刀架和溜板箱等组成。对M7120平面磨床电气控制部分进行分析得出它需要完成开门断电功能、主轴电动机的正反转控制功能、刀架的快速移动功能、冷却泵电动机的控制。然后根据电气控制电路的线路图，编译PLC的梯形图，编译通过后，利用PLC实验台进行实验仿真。由于PLC极高的可靠性，极丰富的指令集，易于掌握，便捷的操作，丰富的内置集成功能，实时特性。因此使M7120平面磨床在完成原有的功能特点外，还具有安装简便、稳定性好、易于维修、扩展能力强等特点。

关键词PLC控制电气控制原理M7120平面磨床

Abstract

This design's content is mainly (Programmable Logic Controller) makes the transformation using PLC to the M7120 surface grinding machine's control section. I have carried on the overall ponder and the analysis first to this time design, enables itself to the M7120 surface grinding machine's basic structure, the movement situation, the processing technological requirement and so on to have certain understanding. The M7120 surface grinding machine mainly has compositions and so on automobile body, main axle gear box, tailstock gear box, guide screw, feed rod, tool rest and apron. Carries on the analysis to the M7120 surface grinding machine electric control part to obtain it to need to complete opens the door the power failure function, the main axle electric motor to reverse the control function, tool rest's rapid traverse function, the cooling pump electric motor's control. Then according to the electric control electric circuit's circuit diagram, translates PLC the trapezoidal chart, translates, carries on the experiment simulation using the PLC laboratory bench. As a result of the PLC extremely high reliability, the extremely rich set of instructions, easy to grasp, convenient operation, rich built-in integrated function, real-time characteristic. Therefore causes the M7120 surface grinding machine to complete outside the original function characteristic, but also has the installment to be simple, the stability good, easy to service, the expansion ability strongly and so on characteristics.

Key words PLC control Electric control M7120 grinder