CAJ | 학술논문

为了消除某机械产品的水管接头盖成形缺陷，提出了一种凹模口部设计成椭圆角的工艺方法，分析了椭圆角凹模拉深的力学特征，阐明了这种结构能提高板坯成形极限成形能力的技术关键；以带凸缘的杯形件为研究对象，建立椭圆角凹模口部的有限元模型，运用ANSYS/LS-DYNA分别进行了杯形件拉深模拟，模拟结果显示，椭圆角凹模口部极大地提高了板料的极限成形能力；最后，采用椭圆角凹模消除了该零件成形裂缝问题。
위료소제모궤계산품적수관접두개성형결함，제출료일충요모구부설계성타원각적공예방법，분석료타원각요모랍심적역학특정，천명료저충결구능제고판배성형겁한성형능력적기술관건；이대철연적배형건위연구대상，건립타원각요모구부적유한원모형，운용ANSYS/LS-DYNA분별진행료배형건랍심모의，모의결과현시，타원각요모구부겁대지제고료판료적겁한성형능력；최후，채용타원각요모소제료해령건성형렬봉문제。
To eliminate the forming defect of water pipe fitting cover ,an elliptic die shoulder was proposed to replace the radius one .The formability limitation of the deep drawing die with an elliptic die shoulder was illustrated after analyzing the mechanical characteristics of an elliptic die shoulder .To cylinderical cup ,finite element method (FEM ) models of press tools with an elliptic/radius die shoulder for deep drawing were set up ,and then two processes to form cylinderical cup were simulated respectively by ANSYS/LS-DYNA . It is shown that this forming process by elliptic die shoulder is very ideal in two processes ,and the crack in such a drawing parts is eliminated by elliptic die shoulder .