论文部分内容阅读
利用Dynaform有限元软件对某离合器盖总成传动带的成形回弹过程进行数值模拟,分析了传动带回弹前与回弹后的应力分布,传动带回弹前与回弹后圆角处的最大应力值分别为871.805和339.947 MPa,应力值的减小使得板料发生回弹。研究了弯曲角度、板料厚度及模具间隙对传动带成形高度的影响。结果表明:传动带的成形高度随着弯曲角度及模具间隙的增大而逐渐增加,而随着板料厚度的增加呈现逐渐减小的趋势。此外,设计传动带成形模进行实验验证,成形高度的实验值与模拟值的误差为7.55%~9.18%,吻合性较好。其中模具间隙为1.1t时,成形高度的实验值为4.98 mm,符合产品的设计要求4.9~5.45 mm,且实验值与模拟值的误差为8.84%。
Using Dynaform finite element software to simulate the forming and rebounding process of a clutch cover assembly belt, the stress distribution before and after rebound of the belt, the maximum stress value before and after the rebound of the belt Respectively, 871.805 and 339.947 MPa, the reduction of stress makes the sheet rebound. The effect of bending angle, sheet thickness and die clearance on the forming height of the belt was studied. The results show that the forming height of the belt gradually increases with the bending angle and the die gap increasing, and decreases with the increase of the sheet thickness. In addition, the design of the belt forming die is verified by experiments. The error between the experimental value and the simulation value of the forming height is 7.55% ~ 9.18%, which shows good agreement. The mold clearance of 1.1t, the forming height of the experimental value of 4.98 mm, in line with product design requirements of 4.9 to 5.45 mm, and the experimental value and the simulated value of the error was 8.84%.