摘要
以某四缸汽油发动机装配线的飞轮螺栓拧紧反力机构作为研究对象,利用CATIA三维软件创建飞轮反力机构的3D模型。使用Hyperworks软件建立飞轮拧紧反力机构的网格模型,导入到ABAQUS软件中设置相应的约束、载荷等边界条件进行有限元分析计算,得出反力机构在承受4颗飞轮螺栓同时拧紧时产生的400 N·m扭矩下的应力及位移状态。结果表明:在此工况下反力机构的强度满足要求,但反力机构齿轮的限位插齿设计复杂,安全系数较大,材料冗余经济性较差。故对反力机构限位插齿进行优化设计,并对新方案重新进行有限元分析。经过分析计算得出简化后的限位插齿结构强度满足要求,经济性也有很大提高,为飞轮拧紧工艺方案的设计及设备选型提供了参考。
Taking the flywheel bolt tightening reaction mechanism of a four-cylinder gasoline engine assembly line as the research object,the 3D model of the flywheel reaction mechanism was established by using CATIA 3D software.Hyperworks software was used to establish the mesh model of the flywheel tightening reaction mechanism,which was imported into ABAQUS software to set the corresponding boundary conditions such as constraints and loads for finite element analysis and calculation.The stress and displacement state of the reaction mechanism under the 400 N·m torque produced by the simultaneous tightening of four flywheel bolts were obtained.The results show that the strength of the reaction mechanism meets the requirements under this working condition,but the design of the limited gear of the reaction mechanism is complicated,the safety factor is large,and the material is redundancy which leads to economy is poor.Therefore,the limited gear of the reaction mechanism was optimized and the new scheme was reanalyzed.After analysis and calculation,it is concluded that the structural strength of the simplified limited gear meets the requirements and the economy is greatly improved,which provides a reference for the design of flywheel tightening process scheme and equipment type selection.
作者
郎福嘉
张贺
龚旺
刘毅
石刚
LANG Fujia;ZHANG He;GONG Wang;LIU Yi;SHI Gang(Ningbo Geely Royal Engine Components Co.,Ltd.,Ningbo Zhejiang 315336,China;Zhejiang Geely Powertrain Co.,Ltd.,Ningbo Zhejiang 315800,China)
出处
《汽车零部件》
2023年第1期51-55,共5页
Automobile Parts
