Railway Vehicle Wheels Of Cad / Cae / Cam Integration Technology Research

Railway Vehicles are primary transportation tools in China, and wheels are key components of railway Vehicles, which support the all weight of vehicles and run in the high speed on rail. With increasing demands on the rail transport in the modern society, high-speed and heavy load trains are developed very rapidly, the demands on wheel design and manufacture has become higher and higher, so it is necessary to employ the CAD/CAE/CAM technology to ensure wheel design and manufacturing quality.The paper first discusses wheel structure, technical demands and manufacturing process, and studies the approaches on wheel 3D solid modeling and the parametric design. A 3D wheel model is built up by CAD software SolidWorks. The key geometric dimensions of wheels are analyzed and wheel parametric design was realized by establishing an EXECL series parameter table.Because the tradition design measure can not accurately calculate the wheel stress distribution and the largest stress, the paper proposes the way to carry on the wheel struction strength analysis by the CAD/CAE integration technology. The methods of CAD/CAE integration are analyzed, and data share is implemented between the wheel 3D solid model and ANSYS. On the basis of analyzing typical working condition of railway vehicles, the calculation model and evaluation method of the wheel intensity is proposed. The intensity of a wheel with typical construction was calculated by ANSYS software.On the NC programming of wheel treadle and its CAD/CAM integration, an automatic NC program software of wheel tread was developed through SolidWorks API, Visual C++.NET and COM technology. The geometric parameters of a wheel tread are obtained directly from the wheel 3D modeling by the software, and the NC program can generated automatically according to manual defined machining parameters.