公开(公告)号：JPH06339891A

公开(公告)日：1994-12-13

申请号：JP13085293

申请日：1993-06-01

Applicant: MATSUSHITA REFRIGERATION

Inventor： OYA EIJI ,  YAMASHITA HIROKA ,  CHUDA ASAICHI ,  ITO HIRONORI

IPC: B26D1/09 ,  B26D3/00

Abstract: PURPOSE:To prevent generation of whiskers, and cut a stable-quality sheet-like plate by forming partial slits in a cutting edge surface of a cutting metal die, and cutting the sheet-like plate while using this cutting metal die as an upper edge or the like. CONSTITUTION:In a cutting metal die 11, partial slits 12 are formed in this cutting edge surface. When a sheet-like plate 15 is cut, the cutting metal die 11 is used, for example, as an upper edge 13, and this is meshed with a lower edge 14. That is, the slits 12 are positioned in a cutting overlapping part of the sheet-like plate 15, and after a whisker generating part having a width extremely smaller than a slit width is ruptured as meshing between both upper and lower edges 13 and 14 becomes large, the whisker generating part is cut down when the meshing between both upper and lower edges 13 and 14 becomes maximum. Thereby, generation of whiskers is prevented, and the stable-quality sheet-like plate 15 can be cut.