锻压技术

三种对称多连杆式冲压机构传动特性对比分析

英文标题：Comparative analysis on transmission characteristics for three stamping mechanisms of symmetrical multi-link type

作者：贾大明王俊卿刘志刚

分类号：TH16

出版年,卷(期):页码：2019,44(6):110-114

摘要：

为改善对称多连杆式冲压机构的传动特性，对连杆和肘杆进行变异演化得到新的冲压机构。并对3种冲压机构进行了受力分析，通过理论推导，建立了机械利益与主要结构参数之间的关系。并通过数值分析，获得工作滑块位移和速度曲线、螺杆驱动扭矩曲线以及机械利益曲线。最后，通过对计算结果的对比分析，发现三角连杆方案在保持机械利益的同时，可提高工作节拍;而三角下肘杆方案不仅可提高工作节拍，还具有良好的速度均匀性。传动特性的对比分析结果可为3种对称多连杆式冲压机构的设计和选型提供参考。

In order to improve the transmission characteristics of the symmetrical multi-link stamping mechanism, the new stamping mechanisms were obtained by mutation and evolution of connecting rod and elbow rod.And the relationship between mechanical advantage and main structural parameters was established based on the theoretical deduction by analyzing the forces of three kinds of stamping mechanisms. Then, the displacement and velocity curves of working slider, the screw driving torque curves and the mechanical advantage curves were obtained by numerical analysis. Finally, through comparative analysis on calculation results, the triangular connecting rod scheme can improve working rhythm while maintaining mechanical advantage, and the triangular lower elbow rod scheme not only improves the working rhythm, but also has good speed uniformity.The comparative analysis results of transmission characteristics can provide reference for the design and selection of three symmetrical multi-link stamping mechanisms.

基金项目：

2017年河南省高等教育教学改革研究(2017SJGLX 176)

贾大明(1967-)，男，学士，副教授 E-mail：hnlyjdm168@126.com

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