锻压技术

变频压力机摆动力完全平衡分析及部分平衡优化设计

英文标题：Complete balance analysis and partial balance optimization design on swing force for variable frequency press

分类号：TH113.2+5

出版年,卷(期):页码：2024,49(4):178-188

摘要：

对一种基于零耦合度平面六杆机构的变频压力机作摆动力平衡设计。首先，分析计算了机构的自由度和耦合度；其次，在位置分析的基础上，依次求得了滑块的位移、速度和加速度曲线；最后，添加由有限位置法求出的配重，实现了机构摆动力的完全平衡，并通过机构平衡后的总质心与总摆动力曲线加以验证；此外，基于实际情况的考虑，进行了机构摆动力部分平衡优化设计，采用遗传算法得到设定范围内的最佳配重值。结果表明：质心曲线在x和y方向上的变化幅度分别减少了52.2437%和8.9392%，总摆动力在x和y方向上的变化幅度分别减少了49.4924%和2.7584%，验证了部分平衡优化的有效性。

The balance design of swing force for a variable frequency press based on zero coupling degree plane six-bar mechanism was made. Firstly, the freedom degree and coupling degree of the mechanism were analyzed and calculated. Then, on the basis of position analysis, the displacement, velocity and acceleration curves of slider were obtained in turn. Finally, the counterweight obtained by the finite position method was added to realize the complete balance of swing force for the mechanism, which was verified by the total center of mass and total swing force curves of balanced mechanism. In addition, based on the actual situation, the partial balance optimization design of swing force for the mechanism was carried out, and the optimal counterweight value within the set range was obtained by genetic algorithm. The results show that the variation amplitude of the center of mass curve in x and y directions decreases by 52.2437% and 8.9392% respectively, and the variation amplitude of the total swing force curve in x and y directions decreases by 49.4924% and 2.7584% respectively, verifying the validity of the partial balance optimization.

基金项目：

国家自然科学基金资助项目（51975062）

作者简介：李霞(1999-)，女，硕士研究生 E-mail：1275216462@qq.com 通信作者：沈惠平(1965-)，男，博士，教授 E-mail：shp65@126.com

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