短电弧数控机床加工自适应补偿研究
|
摘要
针对短电弧数控机床阴极电极直径无法精准检测的问题,提出一种阴极电极直径在线监测方法。利用此监测方法能准确获得阴极电极磨损量,通过数控机床的总线模块将阴极电极磨损量反馈至数控系统。数控系统通过驱动补偿轴动态调整阴极电极位置,确保阴极电极与阳极电极两者放电间隙在控制范围之内,保证加工的顺利进行。在此基础上提出一种短电弧数控机床加工自适应补偿方案,利用此方案可以实现机床自动加工,从而提高了短电弧机床的自动化程度。通过加工实验验证了此方法的可行性。
Aiming at the problem that the cathode electrode diameter of a short arc NC machine tool could not be accurately detected, a method for on-line monitoring of cathode electrode diameter was proposed. Using the monitoring method, the wear amount of the cathode electrode could be accurately obtained; through the bus module, the cathode electrode wear amount was feed back to the numerical control system. The numerical control system dynamically adjusted the position of the cathode electrode by driving the compensating shaft to ensure that the discharge gap between the cathode electrode and the anode electrode was within the control range, and the processing was ensured to proceed smoothly. On this basis, an adaptive compensation scheme for short arc NC machine tools was proposed, by which automatic machining of the machine tool could be realized, thus the automation degree of short arc machine tools was improved.
Aiming at the problem that the cathode electrode diameter of a short arc NC machine tool could not be accurately detected, a method for on-line monitoring of cathode electrode diameter was proposed. Using the monitoring method, the wear amount of the cathode electrode could be accurately obtained; through the bus module, the cathode electrode wear amount was feed back to the numerical control system. The numerical control system dynamically adjusted the position of the cathode electrode by driving the compensating shaft to ensure that the discharge gap between the cathode electrode and the anode electrode was within the control range, and the processing was ensured to proceed smoothly. On this basis, an adaptive compensation scheme for short arc NC machine tools was proposed, by which automatic machining of the machine tool could be realized, thus the automation degree of short arc machine tools was improved.
引文
[1] 柳雅琪,周建平,许燕.基于模糊PID短电弧铣削加工进给运动控制[J].制造技术与机床,2016(10):26-29.LIU Y Q,ZHOU J P,XU Y.Short-arc Milling Based on Fuzzy PID Control to the Feed Movement[J].Manufacturing Technology & Machine Tool,2016(10):26-29.
[2] 李雪芝,周建平,许燕,等.基于L-M算法的BP神经网络预测短电弧加工表面质量模型[J].燕山大学学报,2016,40(4):296-300.LI X Z,ZHOU J P,XU Y,et al.Analysis of Surface Quality Model of Short Arc Machining Based on BP Network with L-M Algorithm[J].Journal of Yanshan University,2016,40(4):296-300.
[3] 何巍杨,周建平,许燕.短电弧铣削加工极间工作介质流场研究[J].制造技术与机床,2017(3):136-141.HE W Y,ZHOU J P,XU Y.Study on the Flow Field of Working Medium in the Short Arc Milling Process[J].Manufacturing Technology & Machine Tool,2017(3):136-141.
[4] 周碧胜,周新民.短电弧切削技术对水泥磨辊、立磨辊高效加工的工艺应用[C]//第十五届全国特种加工学术会议论文集,2013:434-437.
[5] 汪兵兵,周建平,许燕,等.短电弧铣削工具电极材料的放电性能研究[J].制造技术与机床,2016(5):94-98.WANG B B,ZHOU J P,XU Y,et al.Research for Discharge Performance of Electrode Materials by Short Arc Milling[J].Manufacturing Technology & Machine Tool,2016(5):94-98.
[6] 郑玉林,刘海岷.开放式数控系统的研究[C]//第三届全国智能检测与运动控制技术会议论文集,2006.
[7] 陈浩.基于HIO-1000总线模块的数控机床高频传感器数据采集装置[D].武汉:华中科技大学,2015.
[8] 彭海,张钊源.短电弧加工参数对钛合金TC4加工特性的影响研究[J].西安石油大学学报(自然科学版),2017,32(2):122-126.PENG H,ZHANG Z Y.Effect of Short Electric Arc Machining Parameters on Processing Characteristics of Titanium Alloy TC4[J].Journal of Xi’an Shiyou University(Natural Science),2017,32(2):122-126.
[9] 卢江.短电弧加工机理研究[D].乌鲁木齐:新疆大学,2011.
[10] 张振涛.基于华中8型液压式转塔冲床专用数控系统的研究与开发[D].武汉:华中科技大学,2015.
[11] 王平江,林灵,刘继蕾,等.大型船用龙门数控珩磨机短行程加工的研究与应用[J].机床与液压,2015,43(19):1-8.WANG P J,LIN L. LIU J L,et al.Research and Application of Short-stroke Machining of Large Marine Gantry CNC Honing Machine[J].Machine Tool & Hydraulics,2015,43(19):1-8.
[2] 李雪芝,周建平,许燕,等.基于L-M算法的BP神经网络预测短电弧加工表面质量模型[J].燕山大学学报,2016,40(4):296-300.LI X Z,ZHOU J P,XU Y,et al.Analysis of Surface Quality Model of Short Arc Machining Based on BP Network with L-M Algorithm[J].Journal of Yanshan University,2016,40(4):296-300.
[3] 何巍杨,周建平,许燕.短电弧铣削加工极间工作介质流场研究[J].制造技术与机床,2017(3):136-141.HE W Y,ZHOU J P,XU Y.Study on the Flow Field of Working Medium in the Short Arc Milling Process[J].Manufacturing Technology & Machine Tool,2017(3):136-141.
[4] 周碧胜,周新民.短电弧切削技术对水泥磨辊、立磨辊高效加工的工艺应用[C]//第十五届全国特种加工学术会议论文集,2013:434-437.
[5] 汪兵兵,周建平,许燕,等.短电弧铣削工具电极材料的放电性能研究[J].制造技术与机床,2016(5):94-98.WANG B B,ZHOU J P,XU Y,et al.Research for Discharge Performance of Electrode Materials by Short Arc Milling[J].Manufacturing Technology & Machine Tool,2016(5):94-98.
[6] 郑玉林,刘海岷.开放式数控系统的研究[C]//第三届全国智能检测与运动控制技术会议论文集,2006.
[7] 陈浩.基于HIO-1000总线模块的数控机床高频传感器数据采集装置[D].武汉:华中科技大学,2015.
[8] 彭海,张钊源.短电弧加工参数对钛合金TC4加工特性的影响研究[J].西安石油大学学报(自然科学版),2017,32(2):122-126.PENG H,ZHANG Z Y.Effect of Short Electric Arc Machining Parameters on Processing Characteristics of Titanium Alloy TC4[J].Journal of Xi’an Shiyou University(Natural Science),2017,32(2):122-126.
[9] 卢江.短电弧加工机理研究[D].乌鲁木齐:新疆大学,2011.
[10] 张振涛.基于华中8型液压式转塔冲床专用数控系统的研究与开发[D].武汉:华中科技大学,2015.
[11] 王平江,林灵,刘继蕾,等.大型船用龙门数控珩磨机短行程加工的研究与应用[J].机床与液压,2015,43(19):1-8.WANG P J,LIN L. LIU J L,et al.Research and Application of Short-stroke Machining of Large Marine Gantry CNC Honing Machine[J].Machine Tool & Hydraulics,2015,43(19):1-8.