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根据电动5支点斜排肘杆式压铸机的特点与要求,建立了合模机构的数学模型。使用正态分布的概率累积函数构建优化目标函数,设定主要性能参数的期望值与波动量,设置优化的约束条件,按照有约束非线性最优化的求解方法对合模机构进行系统性优化。分析表明,优化后机构力的放大比提高了约39.7%,达到24.3;行程比为1.06,较为理想;最大开模行程可达381.4mm,有所增大;运动曲线平缓、冲击小,整体性能更加适合电动压铸机。
According to the characteristics and requirements of the electric five-point inclined-row toggle-bar die-casting machine, a mathematical model of the clamping mechanism is established. The objective function is established by using the probability distribution function of normal distribution. The expected value and fluctuation of the main performance parameters are set. The optimal constraints are set and the mold clamping mechanism is systematically optimized according to the constrained nonlinear optimization solution. The analysis shows that the magnified ratio of the force of the optimized mechanism is increased by about 39.7% to 24.3, the stroke ratio is 1.06, and the maximum opening stroke is 381.4mm, which increases slightly. The movement curve is gentle, the impact is small, and the overall performance More suitable for electric die-casting machine.