压力机的冲压曲线特征是影响冲压件成品质量的核心因素,常规的冲压曲线设计方法仅局限于刚性系统,忽略了系统弹性的影响,与实际状况存在偏差。将电机的机械特性及各构件的弹性因素考虑在内,建立压力机系统的动力学模型,并采用四阶龙格库塔法求解非线性动力学微分方程,获取滑块的冲压曲线模型。最后以算例分析和比较了所获模型与常规设计的差异。结果表明,压力机系统的惯量和弹性变形对公称压力区的冲压曲线影响较大。 The stamping curve characteristic of press is the core factor that affects the finished product quality of stamping parts. The conventional stamping curve design method is only limited to rigid system, ignoring the influence of system elasticity and deviating from the actual situation. Taking into account the mechanical characteristics of the motor and the elastic factors of each component, the dynamic model of the press system is established and the fourth-order Runge-Kutta method is used to solve the nonlinear dynamic differential equation to obtain the stamping curve model of the slider. Finally, an example is used to analyze and compare the differences between the obtained model and the conventional design. The results show that the press system inertia and elastic deformation of the nominal pressure zone of the stamping curve greater impact.