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以汽车离合器中的弹性零件传动片为研究对象,建立传动片冲裁凸模疲劳分析的有限元模型,利用ANSYS Workbench有限元软件模拟了传动片冲裁凸模的应力分布状况及疲劳寿命。数值模拟结果表明,采用结构改善后的凸模,使得过渡圆角区域的最大应力值由1109.2 MPa减小为1058.6 MPa,凸模的疲劳寿命由75715次提高到120400次。借助冲压级进模得知,结构改善后冲裁凸模的疲劳寿命试验值为107493次,与模拟值之间的相对误差为10.72%,从而验证了数值模拟的正确性。此外,基于改善后凸模结构对传动片冲裁凸模进行标准化,其对企业传动片冲压级进模的设计具有重要的指导意义。
In this paper, the finite element model of the fatigue analysis of the punch punched punch was established with the transmission of the elastic parts in the clutch of the automobile. The stress distribution and the fatigue life of the punching punch were simulated by the ANSYS Workbench finite element software. Numerical simulation results show that the maximum stress of the transition fillet area decreases from 1109.2 MPa to 1058.6 MPa and the fatigue life of punch increases from 75715 times to 120400 times. With the help of stamping progressive die, the fatigue life test of the punched punch with improved structure is 107493 times, the relative error between it and the simulated value is 10.72%, which verifies the correctness of the numerical simulation. In addition, based on the improved punch structure to standardize the punch punched punch, it has an important guiding significance for the design of the punch punch progressive die of the enterprise.