液压机的PLC改造及变压边力控制  

PLC Renovation on Hydraulic Press and Variable Blank Holder Force Control

作　　者：张立娟[1] 宋杨[1] 常海平 

机构地区：[1]中国环境管理干部学院环境工程系,河北秦皇岛066004 [2]中信戴卡轮毂制造股份有限公司,河北秦皇岛066003

出　　处：《机电工程技术》2011年第1期35-37,88,共4页Mechanical & Electrical Engineering Technology

摘　　要：对四柱式万能液压机进行了PLC改造,实现了液压机的基本动作;把控制定压边力的普通溢流阀改为比例溢流阀,结合PLC控制技术与电液比例控制技术,采用2-PID闭环控制,实现了变压边力控制,满足了变压边工艺要求,提高了设备的控制水平。Omnipotent hydraulic press with four poles has been PLC renovated to making the basic action come true.The overflow valve to control the constant blank holder force is changed to the proportion overflow valve.With the technology of PLC and the electricity-liquid control,the 2-PID closed-loop control is adopted to achieving the variable blank holder force control.By the mode,the technical need of variable blank holder force can be satisfied and the control level of the hydraulic press can be improved.

关 键 词：液压机 PLC PID 变压边力 

分 类 号：TG315.4[金属学及工艺—金属压力加工]