双曲柄串联低速急回机构及其遗传算法优化  

Series-Double-Crank Mechanism with Low-Speed and Quick-Return Motion and Its Genetic Algorithm Optimization

作　　者：赵升吨[1] 何予鹏[1] 杨辉[1] 

机构地区：[1]西安交通大学机械工程学院,西安710049

出　　处：《西安交通大学学报》2005年第9期913-916,共4页Journal of Xi'an Jiaotong University

基　　金：全国优秀博士学位论文作者专项资金资助项目(199930);陕西省科技攻关计划资助项目(2003K06-G20).

摘　　要：采用几何分析的方法建立了机械压力机使用的双曲柄串联机构中滑块位移及速度的表达式.采用遗传优化算法对J23-80型机械压力机使用的双曲柄串联机构参数进行了优化设计,获得了最佳的机构参数.优化后的结果表明,该机构的结构简单紧凑、受力性能好,具有良好的低速锻冲急回特性,在曲柄转角为0°～45°的范围内可使滑块速度最高仅为82 mm/s,并存在着一个明显的速度平台,其滑块速度特性甚至还优于结构复杂的专用冷挤及拉延压力机.The equations of displacement and speed of slider in series-double-crank mechanism are established based on the geometric analysis. The mechanism of J23-80 type mechanical press is designed with the genetic optimizing algorithm, and the optimum parameters are acquired. It shows that the mechanism with a simpler structure possesses fine characteristics of low-speed and quick return under lower internal stresses. The maximum speed of the slider reaches only 82 mm/s within the range of 0° to 45° crankshaft angle, and a speed flat roof in the slide speed curve is found. The speed traits of the slider are even better than that of the special cold extrusion press and drawing press with complex structures.

关 键 词：机械压力机 急回特性 遗传算法 

分 类 号：TG386.3[金属学及工艺—金属压力加工]