机械伺服精冲机主冲机构的仿真及优化设计

Simulation and Optimization Design of Cutting Punching Mechanism of Mechanical Servo Fine Blanking Machine

针对液压式精冲机由于液压系统自身的缺陷,导致其在工作时效率低、能耗高等问题,本文设计出一种由伺服电机提供精冲力、预压力、反顶力的精冲机。为了能够对其精冲过程进行精准控制,使结构能平稳可靠运行,本文重点设计其主冲机构:构建主冲机构运动学模型和静态动力学模型,得到精冲时工作台的速度以及输入力矩的理论值;在Adams/View上建立虚拟样机模型并进行仿真分析;并将仿真结果与计算出的理论值比较,二者完全一致;针对其精冲时所需力矩的最大值对主冲机构尺寸及安装位置进行优化,优化后仿真结果表明优化后所需力矩最大值减少了14.46%。

Being different from mechanical fine blanking machine and hydraulic fine blanking machine,a servo fine blanking machine with fine blanking force,pressure and counter force provided by servo motor is designed.In order to accurately control the fineblanking process andmake the structure run smoothly and reliably,this paper focuses on the design of its cutting blanking mechanism.The kinematics model and dynamic static model of the cutting punching mechanism are constructed,and the theoretical values of the speed and input torque of the worktable during fine punching are obtained.The virtual prototype model is established and simulated on ADAMS/View.The simulation results are completely consistent with the calculated theoretical values.The maximum torque required for fine blanking is optimized to reduce it by 14.46%.