JP2009261195A5

JP2009261195A5 -

Info

Publication number: JP2009261195A5
Application number: JP2008110100A
Authority: JP
Filing date: 2008-04-21
Publication date: 2011-04-07
Anticipated expiration: 2028-04-21

Claims

A method of manufacturing a laminated iron core obtained by laminating a plurality of types of iron core thin plates having different outer shapes,
An iron core thin plate punching step in which each of the iron core thin plates is semi-punched or punched out into a circular or oval shape from a strip-shaped thin steel plate;
A pushback step of pushing back each half-cut or punched core sheet;
A dummy thin plate punching step in which a dummy thin plate having the same outer shape larger than each of the iron core thin plates is punched from the belt-shaped thin steel plate integrally with the iron core thin plate;
A lamination step of laminating the dummy thin plates to form a laminate;
A removal step of removing unnecessary portions other than the iron core thin plates from the laminate,
Before the dummy thin plate punching step, further comprising a notch punching step of forming a notch portion only at one location on the circular outer periphery of the dummy thin plate,
In the laminating step, the dummy thin plate is laminated by aligning the positions of the notches, so that one groove portion composed of a set of the notches is formed on the outer peripheral surface of the laminate,
In the removing step, the groove portion of the laminated body is pushed outward to remove the unnecessary portion .

Before the laminating step, further comprising a caulking joint forming step for forming caulking joints on each of the iron core thin plates,
2. The method of manufacturing a laminated core according to claim 1 , wherein in the laminating step, the adjacent iron core thin plates are caulked and joined to each other by the caulking joint.

An apparatus for manufacturing a laminated core in which a plurality of types of iron core thin plates having different outer shapes are laminated,
Iron core thin plate punching means for half-punching or punching each of the iron core thin plates into a circular or oval shape from a strip-shaped thin steel plate;
Pushback means for pushing back each of the iron core thin plates;
Dummy thin plate punching means for punching a dummy thin plate having the same outer shape larger than each of the iron core thin plates from the strip-shaped thin steel plate integrally with the iron core thin plate,
Laminating means for laminating the dummy thin plates to form a laminate;
Removing means for removing unnecessary portions other than each of the iron core thin plates from the laminate ,
Before the dummy thin plate is punched by the dummy thin plate punching means, further comprising means for forming a notch in only one portion of the circular outer periphery of the dummy thin plate;
By laminating the dummy thin plate by aligning the positions of the notches by the laminating means, one groove formed of a set of the notches is formed on the outer peripheral surface of the laminate.
The apparatus for manufacturing a laminated iron core according to claim 1, wherein the removing means expands a groove portion of the laminated body to the outside and removes the unnecessary portion .

A caulking joint forming means for forming a caulking joint on each of the iron core thin plates;
4. The laminated core manufacturing apparatus according to claim 3 , wherein in the laminating means, the adjacent iron core thin plates are caulked and joined to each other by the caulking joint.