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本文对CE7112液压仿形车床仿形刀架系统进行了深入研究。在建立系统动态模型之后,应用控制理论进行了系统动态设计,分析了系统的稳定性、精度和响应特性。通过滑阀特性的解析研究,给出了零位阀参数、系统压力比和系统稳态性能间的关系,为参数综合提供了准则。为获得高性能工业用滑阀,探讨了阀参数流量整定方法并设计了专用检具,证实它可以简单而方便地控制滑阀制造质量。研究中,特别采用了现代设计方法中的识别技术,对系统模型进行了辨识,提高了系统分析的可靠性和精度,为在设计阶段预测产品性能提供了条件。通过计算机仿真技术,研究了系统在不加校正情况下提高系统精度、系统增益的设计问题。最后,对仿形刀架系统安装在仿形车床上进行了实际研究,查明了由于阀套窜动给仿形精度带来的损害,通过批量轴件实切加工得到了如下结果:①经合理调整后的仿形系统,其稳态位置误差仅为0.005mm;②消除阀套窜动后,仿形加工的稳定精度可以达到0.02—0.025mm。
This article has carried on the thorough research to the CE7112 hydraulic profiler turret system. After the establishment of the system dynamic model, the system dynamics design is carried out based on the control theory, and the stability, precision and response characteristics of the system are analyzed. By analyzing the characteristics of the slide valve, the relationship between zero valve parameters, system pressure ratio and system steady state performance is given, which provides a criterion for parameter synthesis. In order to obtain a high performance industrial spool valve, the valve parameter flow setting method was discussed and a special gage was designed to verify that it can control the manufacturing quality of the spool valve easily and conveniently. In the research, the identification technology in the modern design method is especially adopted to identify the system model, which improves the reliability and accuracy of the system analysis and provides the conditions for predicting the product performance in the design stage. Through the computer simulation technology, the system is designed to improve system accuracy and system gain without correction. At last, the actual research on the profile cutter system installed on the profiled lathe was carried out, and it was ascertained that due to the damage caused by the movement of the sleeve to the profile accuracy, the following results were obtained by the actual machining of the batch shaft: Reasonable adjustment of the profiling system, the steady-state position error of only 0.005mm; ② eliminate the valve sleeve after the movement, the stability of the contoured processing can reach 0.02-0.025mm.