MANUFACTURING METHOD AND MANUFACTURING APPARATUS FOR LAYERED IRON CORE

摘要

Stable caulking combination can be performed while preventing transformation of a metal pin thin plate even if a plurality of magnet installation holes are connected to a central opening of the thin plate. A method for manufacturing a laminating metal pin includes a magnet installation hole forming step of forming a magnet installation hole (h1) placed around the metal pin thin plate (2), a caulking forming step of forming an outer caulking protrusion (m2) and an outer caulking measuring hole (m1) on the thin plate after or before the magnet installation hole forming step, a push-back step of pushing back a central opening area (h3) connected inside (h1a) of each magnet installation hole after blanking or half blanking it, an appearance blanking step of blanking the appearance (h4) of the metal pin thin plate (h4), and a laminating step of forming a laminating body (3) by performing caulking combination to the metal pin thin plate. [Reference numerals] (1) Pilot hole; (2) Magnet installation hole; (3) Internal caulking hole; (4) External caulking hole; (5) Central hole; (6) Half-blanking of a central opening area; (7) Blanking of an external diameter; (8) Lamination; (AA) Internal caulking protrusion; (BB) External caulking protrusion; (CC) Push back