摘要
轨道机车车轮轮廓非圆化是影响机车高速安全运行的重要因素。针对机车车轮踏面形貌的在线镟修及测量,结合新型国产不落轮对镟修机床研发,研究机车车轮踏面轮廓在机测量与评价方法,并开发基于机床数控系统的嵌入式车轮踏面轮廓在机测量系统。就车轮踏面在机测量方法、数据处理方法、车轮中心定位以及评价分析方法等进行重点探讨。研究车轮踏面轮廓动态提取与分离方法,以提升测量装置的在线测量精度。通过阶次细化分析方法增强低数阶物理分辨率及评价准确性,以达到提高非圆化评价精度的目的。最终通过实验验证了在机测量系统重复测量精度达到微米级,研究可有效改善机车车轮轮廓的在机测量与评价,同时可进一步提升不落轮对镟修机床的加工性能。
Out-of-round of wheel profile is an important factor affecting the high-speed running of rail locomotives. Combing with the design of late-model underfloor wheelset lathe, this study focuses on the on-line turning and measuring profile of wheel tread. An on-machine measurement and evaluation method for the out-of-round of the wheel profile is studied, and an embedded on-machine measurement system based on the numerical control system is developed. In this work, the measurement model of the wheel tread, data processing, wheel center positioning, and evaluation methods are discussed. The dynamic extraction and separation method of the wheel profile is also proposed to strengthen the on-machine measuring accuracy of measurement device. In addition, the order refinement analysis method is used to solve the physical resolution and measurement accuracy of the low-order polygon, which can improve the evaluation accuracy of the out-of-round of the wheel profile. Finally, experiments verify that the repeatability of the on-machine measuring has reached micron level. This work can effectively improve the measurement and evaluation of the locomotive wheel profile, and it can also promote the work performance of the underfloor wheelset lathe.
作者
刘飞
梁霖
王建民
赵斌
徐光华
Liu Fei;Liang Lin;Wang Jianmin;Zhao Bin;Xu Guanghua(School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an 710049,China;Qinghai Huading Heavy Machine Tool Co.,Ltd.,Xining 810100,China;Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System,Xi'an Jiaotong University,Xi'an 710049,China;State Key Laboratory for Manufacturing Systems Engineering,Xi'an Jiaotong University,Xi'an 710054,China)
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2020年第2期55-62,共8页
Chinese Journal of Scientific Instrument
基金
国家重点研发计划(2018YFB2000202)
国家自然科学基金(51775423)
中国博士后科学基金特别项目(2018T111046)
中国博士后科学基金(2017M623159)
陕西省博士后科学基金(2017BSHEDZZ68)
西安交通大学基本科研业务(XJJ2018047)项目资助.
关键词
轨道机车
车轮轮廓
非圆化
不落轮对镟修机床
在机测量
rail locomotive
wheel profile
out-of-round
underfloor wheelset lathe
on-machine measurement
