板料零件数控渐进成形工艺研究

A study of NC incremental sheet parts forming process

板料零件数控渐进成形工艺是一种通过数字控制设备 ,采用预先编制好的控制程序逐点成形板料零件的柔性加工工艺。本文就板料零件数控渐进成形工艺的成形过程、变形机理、极限半顶角等方面进行了探讨。认为 ,板料零件数控渐进成形是使板料的厚度减薄 ,表面积增大 ,靠逐次的变形累积产生整体的变形。变形区厚度的变化与成形半顶角有关 ,其中 ,成形极限半顶角是数控渐进成形能否成功的关键 ,它不仅与材料有关 ,而且与板料厚度有关。

NC incremental sheet parts forming process is a flexible process which is to form the sheet point by point on NC forming machine according to the prepared program .In this paper, the forming principle of NC incremental sheet metal parts forming process , the ultimate half-apex angle are presented, and so on . Sheet thickness is thinned, surface area is increased in the NC incremental sheet metal parts forming process , and sheet forming point by point is to lead to the whole sheet deformation.The thickness varies according to the half-apex angle, and the forming limit half-apex angle is the key which NC incremental sheet metal parts forming process succeeds, it relates to the material and thickness of the sheet metal.