论文部分内容阅读
针对中碳合金钢零件在成形时产生的裂纹、裂口与回弹问题,通过增加退火工艺,明显改善了零件的成形性能,消除了零件的成形裂纹,使伸长率从12%提高到了25%。从零件的符合性考虑,通过对零件的受力状态进行分析,确定了零件的回弹量,将零件在R25mm位置处产生回弹的圆弧弦高值由原来的1.7mm改进为2.7mm,通过计算将R25mm修改为R16.5mm,取得了很好的实验效果。采用计算机软件AUTO FROM建立数模,并按数模加工模具工作型面,更好的保证了模具工作部分形状与模具图纸的符合性。
Aiming at the problems of cracks, cracks and rebound in medium carbon steel parts during forming, the formability of the parts is obviously improved by adding the annealing process, the forming cracks of the parts are eliminated, the elongation is increased from 12% to 25% . From the conformance of the parts, by analyzing the stress state of the parts, the springback of the parts was confirmed, the arc chord value of the parts that rebounded at the position of R25mm was improved from 1.7mm to 2.7mm, By calculating the R25mm revised to R16.5mm, and achieved good experimental results. The use of computer software AUTO FROM to establish the number of molds, molds and working plane by digital-analog processing, better ensure the mold part of the shape and mold drawing compliance.