锻压技术

APE400整体框架闭式双点压力机运动学与模态特性

英文标题：Kinematics and modal characteristics of APE400 integral frame closed double-point press

单位：1.湖南科技大学机电工程学院 2.天津大学机械工程学院 3.浙江易锻精密机械有限公司 4.浙江万里学院信息与智能工程学院

分类号：TG315.5

出版年,卷(期):页码：2025,50(8):209-215

摘要：

以APE400整体框架闭式双点压力机为对象，采用ANSYS Workbench建立了压力机整机的运动学和动力学模型，研究了不同曲轴转速下冲压机构的运行速度与加速度特性，而后考虑滑块质量与曲轴转速的影响，分析了压力机的全柔模型与刚/柔耦合模型下冲压机构的不平衡力与运动特性；最后，考虑机架底座有无地脚螺栓固定的约束影响，分析了整机运行于不同机构位姿的模态特性。结果表明：在整机模型的动力学分析中，全柔模型相较于刚/柔耦合模型更贴近实际运行情况，其中刚/柔耦合模型中前侧与后侧的轴承力相等，最大轴承力为11759 N，而全柔模型中前侧轴承力比后侧轴承力增加了41%~48%，最大轴承力为9418 N；压力机第1阶固有频率约为24 Hz，远大于其额定工作频率6 Hz，此压力机结构具有很大的减重优化空间。

For APE400 integral frame closed double-point press, the kinematics and dynamics models of the whole press were established by ANSYS Workbench, and the running speed and acceleration characteristics of the stamping mechanism at different crankshaft rotate speeds were investigated. Then, considering the influence of slider mass and crankshaft rotate speed, the unbalanced force and motion characteristics of the stamping mechanism under the full-flexible model and the rigid/flexible coupling model of press were analyzed. Finally, considering the constraint influence of the frame base with or without anchor bolts, the modal characteristics of the whole press running in different mechanism positions were analyzed. The results show that in the dynamic analysis of the whole press model, the full-flexible model is closer to the actual operation conditions than the rigid/flexible coupling model. In the rigid/flexible model, the bearing forces on the front and rear sides are equal, and the maximum bearing force is 11759 N. In the full-flexible model, the bearing force on the front side is increased by 41%-48% compared with that of the rear side, and the maximum bearing force is 9418 N. The first-order natural frequency of the press is approximately 24 Hz, which is much higher its rated operating frequency of 6 Hz, indicating that there is significant room for weight reduction and optimization of this press structure.

基金项目：

宁波市重点研发计划暨“揭榜挂帅”项目（2022Z035）

作者简介：颜健（1988-），男，博士，副教授 E-mail：yanjian1988@hnust.edu.cn

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