锻压技术

六连杆冷温锻压力机传动机构优化设计

英文标题：Optimal design of transmission mechanism for a six-link cold and warm forging press

作者：叶柳丁武学孙宇李道忠

单位：南京理工大学

分类号：TH112.1

出版年,卷(期):页码：2020,45(10):112-116

摘要：

为改善冷温锻压力机滑块的运动学曲线、提高锻件质量，对传动机构的杆系参数进行优化。在建立了六连杆冷温锻压力机传动机构的运动学模型的基础上，结合工程实际设计约束条件，以机构的最大高度、急回特性和最大加速度为优化目标，采用线性加权的方式得到统一的目标函数，并使用惩罚函数和复合形法相结合的优化算法求得工程最优解。在构造多目标函数的过程中，提出了一种量纲转换函数，并将优化后的主要技术指标和滑块运动学曲线与常见的量纲转换函数优化后的结果作对比，发现机构的最大高度降低了3.6%，回程时间缩短了10.3%，下死点前15 mm处的速度减小了12.4%，说明了该量纲转换函数相比于常见的量纲转换函数具有优越性，有一定的参考价值。

In order to improve the kinematics curves of slider for cold and warm forging press and the quality of forgings , the link parameters of transmission mechanism were optimized. Then, based on the kinematics model of transmission mechanism for six-link cold and warm forging press, combining with the actual engineering design constraints, taking the maximum height, the rapid return characteristics and the maximum acceleration as optimization targets, the unified objective function was got by the method of linear weighting, and the engineering optimal solution was obtained by the optimization algorithm combining penalty function and complex method. Furthermore, in the process of constructing the multi-objective function, a dimensional conversion function was put forward, and the optimized main technical indexes and the kinematics curves of slider were compared with the results optimized by common dimensional conversion function. The results show that the maximum height of mechanism is reduced by 3.6%, the return time is shortened by 10.3%, and the speed at 15 mm before the bottom dead point is reduced by 12.4%, which show that the dimensional conversion function is superior to the common dimensional conversion function and has certain reference value.

基金项目：

国家科技重大专项项目（2019ZX04029-001）

叶柳(1995-)，男，硕士研究生 E-mail：yl1028njust@163.com 通讯作者: 丁武学(1966-)，男，硕士，副教授 E-mail:wuxuexie@mail.njust.edu.cn

参考文献：

［1］赵升吨, 邵中魁, 盛朝辉. 机械压力机工作机构合理性探讨
［J］. 锻压装备与制造技术, 2013, 48(3):14-19.

Zhao S D，Shao Z K，Sheng Z H. Discussion of the rationality of working mechanism of mechanical presses
［J］. China Metalforging Equipment ＆ Manufacturing Technology，2013，48(3): 14-19.

［2］程超. 八连杆压力机机构的优化设计
［D］. 南京：南京理工大学，2018.

Cheng C. Optimization Design for Eight-bar Linkage of Press
［D］. Nanjing: Nanjing University of Science & Technology, 2018.

［3］杨春峰, 张盛, 李云鹏,等. 机械压力机六连杆机构优化设计
［J］. 大连理工大学学报, 2013，(1):69-75.

Yang C F， Zhang S， Li Y P， et al. Optimization design for six-bar linkage of mechanical press
［J］. Journal of Dalian University of Technology， 2013，(1):69-75.

［4］宋清玉, 李建, 殷文齐. 基于多目标的机械压力机六连杆机构设计
［J］. 农业机械学报, 2012, 43(4):225-229.

Song Q Y，Li J，Yin W Q. Mechanical press six-link mechanism design based on multi-objective
［J］. Transactions of the Chinese Society for Agricultural Machinery， 2012， 43(4):225-229.

［5］赵丽娟, 范佳艺. 基于遗传算法的采煤机螺旋滚筒多目标优化设计
［J］. 中国机械工程, 2018, 29(5):591-596.

Zhao L J， Fan J Y. Shearer′s helical drum multi-objective optimization design based on GA
［J］. China Mechanical Engineering， 2018, 29(5):591-596.

［6］张鹏飞, 王志恒, 席光. 多层高速旋转过盈配合圆筒的应力分析及径向尺寸优化设计方法研究
［J］. 工程力学, 2018, 35(10):215-224.

Zhang P F， Wang Z H， Xi G. Study on stress analysis method and radial size optimization design method for multi-layer high speed rotating shrink-fitted cylinders
［J］. Engineering Mechanics， 2018, 35(10):215-224.

［7］杜方鑫, 李玲, 吴震宇. 遗传算法与有限元相结合的高速电机转子优化
［J］. 内蒙古师大学报:自然汉文版, 2019, 48(2):38-42,50.

Du F X， Li L， Wu Z Y. Optimization on high-speed permanent magnet machine rotor based on genetic algorithm and finite element method
［J］.Journal of Inner Mongolia Normal University: Natural Science Edition， 2019, 48(2):38-42,50.

［8］李烨健, 孙宇, 胡峰峰,等. 高速机械压力机综合动平衡优化研究
［J］. 华中科技大学学报：自然科学版, 2016,(6):24-28.

Li Y J， Sun Y， Hu F F， et al. Research on synthetic optimum dynamic balancing of high-speed press machine
［J］.Journal of Huazhong University of Science and Technology: Natural Science Edition， 2016,(6):24-28.

［9］Chaudhary H, Saha S K. Balancing of four-bar linkages using maximum recursive dynamic algorithm
［J］. Mechanism & Machine Theory, 2007, 42(2):216-232.

［10］李烨健, 孙宇, 胡峰峰. 多杆高速机械压力机机构优化设计
［J］. 中国机械工程, 2015, 26(1):31-36.

Li Y J， Sun Y， Hu F F. Optimization design for multi-linkage of high-speed mechanical press
［J］.China Mechanical Engineering, 2015, 26(1):31-36.

［11］李江国, 史向平, 李海涛，等. 冷(温)锻压力机的特点及研制要点(上)
［J］. 锻造与冲压, 2018，(3):52-55.

Li J G， Shi X P， Li H T， et al. Characteristics and key points of cold-and-warm forging press (Part I)
［J］. Foring & Metalforming， 2018，(3):52-55.

［12］陈秀宁. 机械优化设计
［M］. 第2版. 杭州：浙江大学出版社,2010.

服务与反馈：

【文章下载】【加入收藏】