Digital Twin Model Of Car Constant Velocity Joints And Its Application

As one of the pillar industries of our country’s manufacturing industry,the automobile industry itself is a system engineering composed of many parts and components.As the key component that bears the steering and driving functions of the joint,the quality of its manufacturing directly affects the safety,handling,and comfort of the car.In order to minimize the probability of accidents caused by the failure of the joint when the car is running,it is very important to realize the high-quality manufacturing and maintenance of the joint.In order to improve the quality and efficiency of joints from manufacturing to post-maintenance,this paper establishes a multi-dimensional digital twin model for full life cycle management,in order to reduce production costs by simulating the production activities of constant velocity joints in virtual space,making the digital twin system has the capabilities of fault prediction,data analysis and control diagnosis.At the same time,it realizes the two-way flow of closed-loop data between the digital twin model and the physical entity,so that the data generated by production,manufacturing and later operation can be used rationally,and the digital twin model can be iteratively optimized.Based on the CATIA 3D CAD system for customized development,this paper established a digital twin model for the full life cycle of a constant velocity joint,and verified it through examples.It solved the coupling problem between product design efficiency and customer’s individual needs,and realized the balance between product standardization and manufacturing flexibility.The specific research content is as follows:(1)Constructed a constant velocity joint digital twin model system framework,which was divided into three layers: system layer,data layer and functional layer;established a constant velocity joint digital twin model based on a closed-loop full life cycle.(2)Socket communication technology is used to construct a constant velocity joint sensor data management system,and ANSYS simulation software is used for simulation testing and optimization design of the constant velocity joint.With the aid of algorithms,the vibration signal of the constant velocity joint is analyzed and processed,and the fault diagnosis function of the constant velocity joint is realized.(3)Based on the CATIA 3D design software platform,combined with component application architecture technology,a digital twin model selection platform of constant velocity joint is developed.