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在分析非圆柱螺旋弹簧受力状态的基础上,推导出不同截面处簧丝的应力状况及对应的簧丝直径求解公式,提出了改变簧丝直径的设计思想,并以扁圆形棱柱螺旋弹簧为例,设计恒定丝径和变丝径2种螺旋弹簧。利用ANSYS Workbench进行仿真分析,将2种弹簧在强度、刚度、疲劳特性3方面作对比。结果表明:2种弹簧在工作压力及受力循环次数方面均可满足设计要求,而变丝径方法使得弹簧质量大幅度降低,且材料的力学性能得到更充分的发挥。该种设计思想可广泛应用于机械领域,在新弹簧的设计及减小零件质量方面具有一定的指导意义。
Based on the analysis of the stress state of the non-cylindrical coil spring, the stress state of the spring wire at different cross sections and the solution formula of the spring wire diameter are deduced. The design idea of changing the diameter of the spring wire is proposed. For example, design a constant wire diameter and wire diameter change 2 kinds of coil springs. Using ANSYS Workbench simulation analysis, the two kinds of springs in strength, stiffness, fatigue characteristics for comparison. The results show that the two kinds of springs can meet the design requirements both in the working pressure and the number of forced cycles, while the changing wire diameter method can greatly reduce the spring mass and make the mechanical properties of the material be more fully exerted. This kind of design idea can be widely used in the field of machinery, and has certain guiding significance in the design of the new spring and the reduction of parts quality.