变步距端子切割机构设计及有限元仿真

提出一种变步距端子切割机构,用于端子联的切割压接,可实现端子联进给、夹紧、切割数量在2~6个间柔性可调。通过UG/Modeling功能建立变步距端子切割机构的三维实体模型,利用UG/Motion运动仿真对所设计机构的三维实体模型进行运动学特性分析,验证该机构运动过程无干涉发生。利用UG高级仿真图形分析该机构运动部件的应力与位移变化情况,找出机构中受力最大、最易破坏变形的受力点,进行可靠性分析;通过有限元分析得出运动部件的应力和位移变化趋于线性,远低于机构的许用值,满足设计要求。该机构已授权发明专利,并与合作企业进行了生产性中试,经过试验验证,证明了该机构的可行性。

Design and Finite Element Simulation of Terminal Cutting Mechanism of Variable Step Distance

A terminal cutting mechanism with variable step length was which applied in cutting and pressing connection for terminals.It could realize feeding, clamping, and the terminal cutting number could be adjusted between 2~6.A three dimensional solid model of the variable step length cutting mechanism was established by using UG/Modeling function, and the kinematic characteristics of the 3D solid model of the designed mechanism were analyzed by using UG/Motion simulation.The mechanism has no interference in the dynamic process by modeling and the analysis.The stress and strain of the moving parts of the mechanism were analyzed by using the advanced UG simulation graphics, reliability test was done for the points on the mechanism with highest stress and most easily deformation.The finite element analysis shows the stress and strain of the moving mechanism are linear and much lower than the stress allowable value of the mechanism, so the design of the moving parts meets the requirement.This mechanism has issued the invention patent, and the productive pilot is finished in partner enterprise;the feasibility of this mechanism is proven by the testing.