| Automotive differential is an important part of the transmission system.When the car turns or the road is bumpy,differential makes two wheels around the drive axle roll at different speeds,to ensure that two wheels around the drive axle make pure rolling.According to the forming principle of bevel gear profile,the model of planetary gear and side gear is established by Pro/E parametric modeling,and the 3D model of the whole differential is established later.Assembly is the final stage of product design and manufacture,assembly occupies an important position in the product manufacturing cycle.50%of product quality depends on the assembly process,so the product assembly process is an important part.Nowadays,most enterprises use two-dimensional drawings and paper technical documents to guide the product assembly.Although the two-dimensional assembly process file is standard,the digression between two-dimensional assembly process documents and three-dimensional geometric model results in poor vivid guidance.Besides,site assembly workers are easy to misunderstand the process contents.Currently,the most effective method is to simulate the assembly process with three-dimensional technology instead of the traditional two-dimensional assembly process.This paper does an assembly process simulation on the differential through the 3DVIA COMPOSER which improves the efficiency and quality of the assembly,and avoid errors during the product assembling.The simplified Pro/E model was imported into the Workbench,and the parts of the differential were meshed.The bending stress of the planetary gear,the axle gear and the differential shell were analyzed.The contact stress between the planetary gear and the axle gear were analyzed.The modal of the planetary gear,the axle gear and the differential shell were analyzed.The fatigue life of the planetary gear and the axle gear were analyzed.The fatigue life test of differential was carried out.The results show that the differential meets the requirements. |
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