摘要
针对发动机曲轴轴瓦装配工艺对装配精度的影响问题,分析了螺栓拧紧力矩下的轴瓦变形规律以及等效应力,拟定7个装配工艺方案,利用有限元仿真对各方案进行了验证,得到不同拧紧顺序下轴瓦应力分布及变形规律,采用轴瓦内径圆度误差评估了装配精度,并将轴瓦圆度优化结果与实验结果进行了对比分析。研究结果表明,优化方案的轴瓦圆度误差降至0.0038 mm,保证了装配精度;轴瓦内径差实测值的平均值为0.0300 mm,仿真结果为0.0324 mm,两者误差为7%,说明仿真结果和实验结果基本一致。
In order to study the influence of the assembly process of the engine crankshaft bearing on the assembly accuracy,the deformation law and equivalent stress of the bearing under the torque of the fastening bolts are analyzed,and seven assembly process schemes are formulated.The finite element simulation is used to verify each scheme,and the stress distribution and deformation law of the bearing under different fastening order are obtained.The assembly precision is evaluated by the circularity error of the bearing.The research results show that the optimized scheme reduces the circularity error of the bearing to 0.0038 mm,ensuring the assembly precision.By analyzing the experimental results,the average value of the inner diameter hole deviation of the bearing is 0.0300 mm,which is 7%lower than the average value of 0.0324 mm obtained by the finite element simulation,indicats that the experimental and simulation results are basically consistent.
作者
闫炳彰
关世玺
黄镇东
张艳岗
程颢
邸红儒
Yan Bingzhang;Guan Shixi;Huang Zhendong;Zhang Yangang;Cheng Hao;Di Hongru(School of Aerospace Engineering,North University of China,Shanxi Taiyuan,030051,China;School of Energy and Power Engineering,North University of China,Shanxi Taiyuan,030051,China)
出处
《机械设计与制造工程》
2025年第1期1-6,共6页
Machine Design and Manufacturing Engineering
基金
基础产品创新计划科研项目。
关键词
装配
轴瓦
螺栓拧紧顺序
ANSYS仿真
圆度误差
assembly
bearing bush
bolt tightening sequence
ANSYS simulation
roundness error
作者简介
闫炳彰(1999-),男,硕士研究生,主要研究方向为航空宇航科学与技术,17582866038@163.com;通讯作者:关世玺,男,教授,guanshixi@163.com.
