CAJ | 학술논문

钣制旋压带轮以其重量轻、生产效率高、节能、节材及动平衡性好等优点,在众多领域逐步取代以铸、锻等传统方法加工的带轮,得到广泛应用.本文深入分析了多楔带轮旋压成形特点,将其变形过程划分为增厚及旋齿两个变形阶段;基于增厚成形过程的重要性,采用有限元分析软件MSC,Marc对该过程预成形、腰鼓成形及增厚成形3个工步进行了数值模拟.结果表明,预成形时最大径向拉应变出现在缩径区,该区易产生成形缺陷;腰鼓成形以胀形为主要变形方式;增厚成形时径向应变以正应变为主、轴向及切向应变以负应变为主,体现为径向压缩、侧壁增厚的成形效果.在数值模拟结果的基础上,进行了工艺试验验证,结果吻合良好,验证了数值模拟分析的有效性.
판제선압대륜이기중량경、생산효솔고、절능、절재급동평형성호등우점,재음다영역축보취대이주、단등전통방법가공적대륜,득도엄범응용.본문심입분석료다설대륜선압성형특점,장기변형과정화분위증후급선치량개변형계단;기우증후성형과정적중요성,채용유한원분석연건MSC,Marc대해과정예성형、요고성형급증후성형3개공보진행료수치모의.결과표명,예성형시최대경향랍응변출현재축경구,해구역산생성형결함;요고성형이창형위주요변형방식;증후성형시경향응변이정응변위주、축향급절향응변이부응변위주,체현위경향압축、측벽증후적성형효과.재수치모의결과적기출상,진행료공예시험험증,결과문합량호,험증료수치모의분석적유효성.
With the advantages of light weight, high precision and economy and good dynamic characteristics, the pul-leys manufactured by spinning instead of being manufactured by forging or casting are widely used in many fields. The forming characteristics during six-wedge poly-pulley spinning were analyzed. The spinning forming was divided into two processes: thickening and tooth forming. The FEA simulations of the thickening process during poly-pulley spin-ning, including performing, drumming and thickening, were carried out by MSC. Marc software due to the importance of this process in the whole spinning forming. It indicates that the maximum radial tensile strain exists at necking area of performing workpiece during performing, and forming defects also appear on this area easily. Bulging is the main de-formation during drumming. Tensile strain is mainly in the radial direction and compressive strains are mainly in the axial and tangential directions during thickening, according to the forming effect of radial compression and thickening .On the basis of FEM simulation, the experiment was carried out to prove the results of FEM. The experimental results agree well with the results of simulation, which verifies the validity of simulation.