Metal working – Method of mechanical manufacture – Electrical device making
Patent
1999-03-31
2000-07-25
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
29738, H01F 4102
Patent
active
060922788
ABSTRACT:
In a method of making a pencil core having a plurality of substantially flat laminations wherein at least one lamination at the center of the core is wider than the other laminations, a flat strip of core steel is fed into a progressive die, and a plurality of scrap region blanking stations is provided each of which blank out two spaced parallel regions from the strip, but with each of the scrap region blanking stations blanking out the regions at a different spacing. At an embossing station, at least one embossment is provided in at least each of the laminations preceding the last lamination. After all of the scrap region blanking stations, a blanking and stacking station first blanks laminations free from the strip at and corresponding to the parallel scrap regions of different spacing, and as each lamination is blanked free from the strip, that lamination is stacked onto the previously blanked laminations to form completed cores, the completed cores being held in a choking section of the blanking and stacking station. This die can also have multiple rows.
REFERENCES:
patent: 4979285 (1990-12-01), Martin
patent: 5075150 (1991-12-01), Webb et al.
patent: 5163217 (1992-11-01), Sakanishi
patent: 5174009 (1992-12-01), Martin
patent: 5349741 (1994-09-01), Neuenschwander
patent: 5373622 (1994-12-01), Neuenschwander
patent: 5640752 (1997-06-01), Steiner
patent: 5649349 (1997-07-01), Greenway
patent: 5755023 (1998-05-01), Neuenschwander
patent: 5771565 (1998-06-01), Walters
patent: 5791038 (1998-08-01), Libert et al.
patent: 5799387 (1998-09-01), Neuenschwander
patent: 5809638 (1998-09-01), Neuenschwander
Hall Carl E.
Tempel Steel Company
LandOfFree
Method for manufacturing a pencil-shaped core does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for manufacturing a pencil-shaped core, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manufacturing a pencil-shaped core will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1328181