论文部分内容阅读
毛坯设计在汽车板料冲压成形工艺设计中起重要作用,它直接影响工件的成形性。一步法将板料成形过程简化为一个简单加载的变形过程,并采用全量理论分析初始状态和变形终了构形。结合塑性变形理论和有限元技术,直接由工件反算出毛坯。并以某汽车的前门窗框加强板冲压成形为例,通过一步法获得初始毛坯的形状及尺寸,验证了一步法的快速性与准确性。
Blank design in automotive sheet metal stamping forming process plays an important role in design, it directly affects the formability of the workpiece. The one-step method simplifies the sheet metal forming process into a simple loading deformation process and analyzes the initial state and the final deformation shape using the full amount theory. Combined with plastic deformation theory and finite element technology, the workpiece is directly calculated from the rough. Taking the stamping of the front door and sash of a car as an example, the shape and size of the initial blank are obtained by one-step method, which verifies the quickness and accuracy of the one-step method.