Metal working – Method of mechanical manufacture – Electrical device making
Patent
1992-10-26
1998-09-22
Vo, Peter
Metal working
Method of mechanical manufacture
Electrical device making
29596, 29732, 29738, 310217, 428137, H02K 1502
Patent
active
058096388
ABSTRACT:
The present invention involves a method and apparatus for forming a centrally interlocked stack of laminations for rotors. A centrally located, circular indentation is formed in each lamination. The indentation provides corresponding projections and depressions in the laminas which may be interlocked by engaging adjacent depressions and projections. Using a progressive die assembly, laminas are blanked from stock sheet material and punched to form the projection/depression. The machine for manufacturing the laminations includes a blanking station including a punch for forming the projections/depressions, and a rotating and stacking station. The projection/depression forming station includes a counterforce which is applied when punching the projection/depression so that the stock material is relatively flat. The laminations are blanked, then rotated, and finally stacked together to form a lamination stack.
REFERENCES:
patent: 2671951 (1954-03-01), Sliwiak
patent: 2975312 (1961-03-01), Ploran
patent: 3202851 (1965-08-01), Zimmerle
patent: 3203077 (1965-08-01), Zimmerle
patent: 4110895 (1978-09-01), Mitsui
patent: 4160182 (1979-07-01), Mitsui
patent: 4162734 (1979-07-01), Dangelmaier
patent: 4264663 (1981-04-01), Beenken
patent: 4364169 (1982-12-01), Kawano
patent: 4538345 (1985-09-01), Diederichs
patent: 4728842 (1988-03-01), Martin
patent: 4738020 (1988-04-01), Neuenschwander
patent: 5075150 (1991-12-01), Webb
L.H. Carbide Corporation
Vo Peter
LandOfFree
Method for manufacturing laminated parts with center interlock 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 laminated parts with center interlock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manufacturing laminated parts with center interlock will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1611468