Parametric Design System of Alter-Rigidity Spring Assembly in Rolling-Stock

Leading by the thinking of module design and the parametric design theory of cylindrical helical spring,using visible and object-oriented programming software VB as development tool,the parametric design system of alter-rigidity spring assembly in railway vehicles has been established by Solid Works secondary development with its API interface.According to the spring design demand,the system achieves the spring computer program design when the spring assembly load is distributed and the spring parameter is determined. It also realizes various functions consist of structure size design,strength checking,fatigue life estimation,design of fatigue test program,generation of flexibility-force drawing,parametric three-dimensional modeling and automatic generation of drawing. Spring assembly design system provides important parameters for later spring parametric design and improves the design quality and the level of automation.