机车构架在役再制造中火焰矫正工艺参数的研究  

Study on flame correction process parameters of locomotive frame in service remanufacturing

作　　者：赵英奎 阮金华[1] 张俊 张祖斌 李东平 ZHAO Yingkui;RUAN Jinhua;ZHANG Jun;ZHANG Zubin;LI Dongping(Institute of Mechanical Automation,Wuhan University of Science and Technology,Wuhan 430081,China;School of Mechanical Engineering,Hubei University of Arts and Science,Xiangyang 441053,China;Xiangyang Branch of CRRC Luoyang Locomotive Co.,Ltd.,Xiangyang 441105,China)

机构地区：[1]武汉科技大学机械自动化学院,武汉430081 [2]湖北文理学院机械工程学院,襄阳441053 [3]中车洛阳机车有限公司襄阳分公司,襄阳441105

出　　处：《现代制造工程》2021年第10期148-153,共6页Modern Manufacturing Engineering

基　　金：襄阳市科技研究与开发项目(襄科计[2017]10号/001)。

摘　　要：针对在役再制造中机车构架火焰矫正过程完全依赖人工经验,矫正的精度和效率难以保证的问题,以DF8B型机车拉杆座为研究对象,利用Ansys Workbench软件建立了拉杆座火焰矫正过程的热-结构耦合模型,求解出拉杆座的温度场和变形场;研究了拉杆座的矫正量随火焰加热温度T、加热区域宽度d和侧深h这3个火焰矫正工艺参数的变化规律,给出了火焰矫正工艺参数优选的方法,并经实例验证。结果表明:拉杆座矫正的最佳火焰加热温度在750℃左右;矫正量随加热区域宽度增大而增大,随侧深增大而先快速增大后再减小,其峰值位于侧深为整个侧面宽度的2/3处;这为拉杆座火焰矫正工艺参数确定提供了理论依据。Aiming at the deficiency that the flame correction process of locomotive frame in service remanufacturing completely depends on workers′experience,which is hard to ensure the accuracy and efficiency of correction.Taking the pull rod seat of DF8B locomotive as the research object,the thermal-structure coupling model of the pull rod seat in flame correction process was established by using Ansys Workbench software,the temperature field and deformation field were solved.The variation law of three flame correction process parameters of the pull rod seat with the flame heating temperature T,the heating width d and lateral depth h was studied,the optimization method of flame correction process parameters was given and verified by an example.The results show that the optimum flame heating temperature for the straightening of pull rod seat is about 750℃,the straightening amount increases with the increase of heating width,and rapidly at first increases and then decreases with the increase of lateral depth,and the peak value was located at the side depth of 2/3 of the whole side width.This provides a theoretical basis for the determination of the flame correction process parameters of the pull rod seat.

关 键 词：机车构架 拉杆座 火焰矫正 Ansys Workbench软件 温度场 

分 类 号：U270.12[机械工程—车辆工程]