连杆裂断机床控制系统的研究

Control system of connecting rods fracture splitting machine

针对连杆裂断机床输出裂断力不稳定、加工冲击大、自动化程度低的问题,对连杆裂断机床的机械结构、液压系统进行了分析,对实现液压缸大压力大流量稳定输出和消除夹具与工件之间的间隙进行了研究,提出了将压力传感器和蓄能器应用于液压系统中,优化液压系统的控制策略,改进了连杆裂断加工工艺流程。机床控制系统包括硬件系统及软件系统,基于三菱PLC、触摸屏及模拟量输入模块设计了硬件系统结构,设计了工艺参数设置、实时监控、自动运行、故障报警等软件系统程序。研究结果表明,该控制系统能够实时监测液压系统状态,确保输出裂断力的大小及加载速度,机床运行稳定,操作方便,自动化程度较高。

Aiming at the problem of output splitting force unstable,large impact in processing,and low automation degree of the connecting rod fracture splitting machine tool,the machine mechanical structure and hydraulic system were introduced,then high pressure and large flow output of the hydraulic cylinder and eliminating the gap between the work-piece and fixture were studied. It＇s was proposed that the pressure sensor combined with accumulator were used to optimize the control strategy of hydraulic system. Also,the connecting rod fracture process was improved. The machine tool control system included hardware system and software system,the hardware of the control system was designed based on Mitsubishi PLC,touch screen and A / D input module,and the following programs were designed： process parameters setting,real-time monitoring,automatic operation,fault alarming. The results indicate that the control system can real-time monitor hydraulic system to ensure the output of splitting force and load speed of the force,the machine works stability,and is convenient to operate.