CAJ | 학술논문

基于我国航空轮胎成型鼓的自主创新需求，针对一种典型的大伸缩比轴/径向伸缩式轮胎成型鼓，研究了其运动特性，以期为该机构的运动学设计奠定基础。基于矢量法建立了该机构的运动学模型，采用无因次分析方法分析了3层鼓肩的运动规律，分别从轴向、径向和周向研究了3层鼓肩依次层叠收缩的相对运动关系，建立了鼓肩避免干涉的几何约束方程。研究结果表明：该成型鼓分2个阶段收缩，鼓肩轴向尺寸越大第1阶段越长；鼓肩的轴向尺寸应小于最大伸展状态下成型鼓轴向尺寸的1/4，否则轴/径向伸缩比减小。最后结合算例对该机构进行了运动学仿真，验证了该分析方法的正确性和有效性。
기우아국항공륜태성형고적자주창신수구，침대일충전형적대신축비축/경향신축식륜태성형고，연구료기운동특성，이기위해궤구적운동학설계전정기출。기우시량법건립료해궤구적운동학모형，채용무인차분석방법분석료3층고견적운동규률，분별종축향、경향화주향연구료3층고견의차층첩수축적상대운동관계，건립료고견피면간섭적궤하약속방정。연구결과표명：해성형고분2개계단수축，고견축향척촌월대제1계단월장；고견적축향척촌응소우최대신전상태하성형고축향척촌적1/4，부칙축/경향신축비감소。최후결합산례대해궤구진행료운동학방진，험증료해분석방법적정학성화유효성。
Based on the demand for independent innovation of Chinese aircraft tire,a study on the movement charac-teristics of an axial/radial telescopic tire building drum with big telescopic ratio was conducted,which aimed to lay foundation for kinematic design of the mechanism. Kinematic model of the mechanism was established based on the vector method,and dimensionless analysis was used to analyze the movement rule of drum shoulders. The relative movement of drum shoulders was studied in axial direction,radial direction and circumference respectively,and geometric constraint equations were established to avoid interference. The analysis results show that the building drum has two contraction phases,and the larger the axial size of drum shoulders is,the longer the first phase becomes. The axial size of drum shoulders will be less than a quarter of the axial size of the building drum in the biggest stretch state,otherwise the axial/radial telescopic ratio will decrease. Finally a simulation combined with examples was con-ducted by MATLAB codes,which shows that the approach is correct and effective.