Optimization design of heavy-duty servo press'double crank-toggle mechanism with engineering constraints taken into consideration
In this article,in response to the demands of the servo press'heavy duty and long stroke,a double crank-toggle mechanism with composite reinforcement is proposed to reduce the main driving servo motor's power.A series of the servo press'constraint conditions are identified,such as force-energy boundary,non-interference of the structure,mechanism rationality and transmission performance,with the engineering design and stamping process requirements taken into consideration.Besides,with the minimum driving torque as the optimization target,the mathematical model is set up to optimize the double crank-toggle mech-anism;then,it is solved by means of the complex method,and the optimal mechanism parameters are obtained,which can be used for engineering.On basis of this,the 25 000 kN heavy-duty servo press is designed and manufactured,which is successfully applied in production practice.It is proved that both this transmission mechanism and the optimization method with the engineer-ing constraints taken into account are effective and reliable in the heavy-duty servo press'design and application.
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