| 摘要 |
A method of slitting and bending an elastically and plastically deformable sheet of material comprising the steps of: forming two elongated slits through the sheet of material with each slit being laterally offset on opposite sides of a desired bend line and being longitudinally displaced relative to the other slit along said bend line, said slits having a kerf width dimensioned to produce interengagement of edges of said sheet of material on opposite sides of said slits during bending; and bending said sheet of material about a virtual fulcrum aligned with said bend line to produce plastic and elastic deformation of said sheet of material along said bend line and interengagement of said edges. |
