【摘要】 采用斯蒂芬森六连杆作为机械压力机的工作机构,用12 个设计变量建立了滑块的运动方程,建立了以滑块在工作阶段的速度波动、最大速度和工作压力角均为最小的优化设计数学模型.以JH23 63 型机械压力机的技术参数为依据,采用遗传优化算法进行求解,设计的斯蒂芬森六连杆压力机在公称压力行程范围内,滑块的最大工作速度仅为94 mm/s,工作行程与行程速比系数为2 461 5,并且具有平均速度为99 mm/s的平台.该新压力机在要求低速锻冲的板料拉延工艺等实际应用中,与原普通型机械压力机相比,其工作性能有明显的提高.更多还原

【Abstract】 The Stephenson’s chain is used as the working mechanism of the mechanical press. The kinematical equations are established with 12 design variables, and the mathematical mold of optimum desgn is also set up according to the minimum of the fluctuating for which velocity, the maximum velocity, and the pressure angular in the stamping-punch stage. On the basis of the key technical parameters of JH23-63 type mechanical press, the Stephenson six-bar linkage mechanical press is designed by means of genetic optimal algorithm, velocity of the slide in the nominal pressure stroke is 94 mm/s, proportion of for which forging-stamping stroke time to return time is 2.461 5, and there is an obvious speed flatness of 99 mm/s in the speed curve of the mechanism. It is shown that the working characteristics of this mechanical press are much better than the conventionally common mechanical press in the low-speed stamping-punch and drawing technology application.更多还原