锻压技术

胀形液压机控制系统改造

英文标题：Improvement of control system for hydraulic bulging press

作者：左维

单位：天津中德应用技术大学

关键词：胀形液压机控制系统增压器 DELTA控制器

分类号：TG316

出版年,卷(期):页码：2018,43(1):134-139

摘要：

针对胀形液压机原系统存在的问题，对主控制系统和侧推控制系统进行改造，采用高速处理能力的S7-PLC、高精度0.005 mm的位移尺、传感器替代原主控制系统硬件进行升级，采用控制周期更短的控制器替代侧推控制系统原有的控制板，研究了硬件的刷新时间以及通讯数据传输速度，研究了控制系统升级后胀形过程中压力的控制过程。试验成形的胀形件最大压强为14 MPa，成形时间缩短3 s，成形件基本达到工艺要求。通过前后系统的成形压力数据对比，说明新的控制系统硬件在响应周期上得到提高，数据处理能力增强，侧推系统控制器还可以对不同胀形件进行定制加工曲线，方便现场调试，为厂家节省了维护时间和费用。

To solve the existing problems in original system of hydraulic bulging press, the main control system and the lateral thrust control system were improved by replacing the hardware of original main control system with S7-PLC of high speed processing capability, high precision displacement scale of 0.005 mm precision and sensor, and the original control board of lateral thrust control system was replaced by the controller with shorter controlling period. Then, the refresh time of hardware and the speed of communication data transmission were studied, and the controlling process of pressure during the bulging process after control system updating was researched. The bulging part meets the technical requirement with the maximum pressure of 14 MPa and the shortened forming time of 3 s. Comparing forming pressure data before and after updating the system, the hardware of new control system is improved in response period and data processing capability. Thus, the controller of lateral thrust system could customize the processing curve for different bulging parts and be convenient for on-site debugging, which saves time and cost on maintenance.

基金项目：

教育部产学合作协同育人项目（201602014002）

作者简介：左维（1971-），男，学士，副教授，E-mail：anqi125@126.com

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