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 變形區(qū)厚度的變化與成形半頂角有關(guān),其中,成形極限半頂角是數(shù)控漸進(jìn)成形能否成功的關(guān)鍵,它不僅與材料有關(guān),而且與板料厚度有關(guān)。