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1、液压拉深垫电气限制系统的分析与设计太原理工高校硕士探讨生学位论文，.,V E E, A,I RESEARCH AND DESIGN OF ELECTRICAL CONTROL SYSTEM OF HYDRAULIC DEEP DRAW 吁 NG DEVICE ABSTRACT As our native mobile industry has developed rapidjy recent years, many mobile plants are improving their productive efficiency and qual ity industriously in orde
2、r to be the win 11 er in market competition. Hydraul ic drawing device is the key equipment in press machine which controls the production quality in auto-body panej forming process , and thus is important to regular production. Consequently, the reasonable design of electrical control system of hyd
3、raulic drawing device is significant to improve the quality of auto-body panel production. The electrical control system of hydraulic drawing device is investigated 企 om the foil owing aspects: The structure and operation principle of hydraulic drawing device is analysed, and also the principle and
4、composition characteristics of closed loop electro-hydraulic servo control of each drawing cylinder is studied. Based on the requirement analysis of electrical control of hydraulic drawingdevice ，the network configuration and the main hardware of control太原竣工高校硕士探讨生学位论文IV system are designed. 丁 he el
5、ectrical principle chart is also designed according to technical requiremen t. The PLC program of hydraulic drawing device control system is designed based on the pjogramming ideal of modulization. This PLC program is comprised of the programs used for controlling cyclic cooling pump , controjjed oi
6、l pump , oil filter , pumping station pressure , pumping station heating and operational moel ofhydraulic drawing device. The touch 句 pe programmable terminal control program , which consists of the control screen for the total controj interface , the set up of force in drawing process , thealarming display and theelectric motor of pumping station , is developed using Pro-Face. Thus , the interface between user and the system