3、使机床的工作效率有所提高。本文对M7475B平面磨床系统进行改造，M7475B磨床其原控制电路是继电器控制，接触器触点较多，故障多，维修人员工作任务量大，对于这种情况，我们用PLC控制改造其继电器控制的线路，克服了这些缺点，降低了设备的故障率，并且提高了设备使用效率。 【关键词】可编程序控制器；平面磨床；改造v长春大学毕业设计（论文）纸┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊SurfacegrindingmachineofthePLCcontrolsystemdesigne[Abstract]Because many grinder in factories an
4、d enterprises in the age, their work is far less than modern production requirements. So it is necessary for the old conventional motor control system for technological transformation, to the programmable controller to replace the conventional relay. In order to achieve the automatic control of
5、grinding. This paper introduces the use of PLC to control system of plane grinder for modernisation, briefly describes the vintage plane grinding machine working principle and using PLC to transform the design method and design, and gives the PLC programming ladder diagram and schematic diagram.
6、 After the reconstruction of the grinding machine working stable, safe and reliable. The system has good performance, higher precision grinding. This article uses the PLC control grinding operation, the grinder starting, stop, emergency stop, and failure to stop function, according to the operat
7、ional requirements of the control switch grinder: flexible overload, open phase and light load, voltage is not stable, the scene shows running, intelligent monitoring. Can also be based on the absorption of different workpie
