The invention relates to a design method for gaps of main and auxiliary springs of a high-strength first-level gradual-change-rigidity
leaf spring and belongs to the technical field of suspension steel plate springs. According to the design method, the gaps of the main and auxiliary springs of the high-strength first-level gradual-change-rigidity
leaf spring can be designed according to design requirement values of a main spring structure parameter, the first-piece auxiliary spring length, the
elastic modulus, the main spring intensifying rigidity, the main and auxiliary spring composite intensifying rigidity, a contact load, a rated load and the remaining tangent line arc height under the rated load. It can be seen that from a model
machine loading test, the design method for the gaps of the main and auxiliary springs of the high-strength first-level gradual-change-rigidity
leaf spring is right, accurate and reliable
design values of the gaps of the main and auxiliary springs can be obtained, and a reliable technical basis is laid for design of the high-strength first-level gradual-change-rigidity leaf spring and CAD
software development. By means of the method, the
product design level, quality and performance and the vehicle running smoothness can be improved; and meanwhile, the product designing and experiment testing cost is reduced, and the product development speed is increased.