复杂钣金零件渐进成形方法

以复杂钣金零件－人面部模型零件为例，论述基于UG软件的建模及建模过程中应注意的问题、支撑模型的制作及其加工代码的生成、适用于渐进成形正成形过程的加工代码生成处理过程，给出加工代码的详细信息，成功加工出质量较高的人面部模型。人面部模型渐进成形试验结果表明，利用渐进成形正成形方法可以成形出形状复杂的钣金零件，生产小批量复杂零件可以节省时间与费用；UG生成的三轴数控加工代码需要通过处理才能应用于渐进成形正成形过程；复杂钣金件渐进成形过程中定位精度非常重要，定位精度高的零件厚度分布符合 的规律，并可以成功成形出设计的零件，定位精度误差较大时零件厚度分布不均匀，成形工具头与板 料的过度挤压侧板料厚度变薄急剧从而引起零件的过早破裂。

INCREMENTAL FORMING METHODS ON COMPLICATED SHEET PARTS

Incremental forming process of a face-part is discussed. The procedures include modeling based on UG software and problem between it, how to make die and get tool path code, how to get tool path code which can be used in positive incremental forming and tool path’s information. The face-part of high quality is formed successfully. The result is that complicated sheet metal part can be manufactured successfully based on positive incremental forming at reduced cost and processing time; UG software can not give required tool path in order to manufacture complicated parts by positive incremental forming. Auxiliary software is needed to serve the purpose. The accuracy of the part thickness in accordance with angle depends upon the precision of tool positioning. The thickness distribution along the part obeys the law and designing part can be manufactured successfully when tool positioning is high. Thickness between tool and blank becomes thinning smartly when tool positioning is low so the part will become failure abnormally.