Method and device for producing bundles of sheet metal laminates for magnetic cores

US6588093B1 · kind B1 · utility

Assignees

• Vacuumschmelze GmbH & Co. KG · DE
• FAES Werkzeug-und-Maschinenbau Aktiengesellschaft · CH

Inventors

• Kurt Emmerich · Alzenau, DE
• Alois Hangg · Otterstadt, DE
• Herbert Hein · Alzenau, DE
• Markus Widrig · Miesegg, CH
• Jörg Lüscher · Einsiedeln, CH

Key dates

• Filing date: Mar 17, 2000
• Grant date: Jul 8, 2003
• Expiry date: Mar 17, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/5143
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

In a manufacturing method and apparatus for manufacturing sheet metal packets in punch-packeting technology with a round or oval iron cross section. laminations are punched from a ribbon and are provided with depressions at one side and with elevations at the other side that coincide with the depressions and lie opposite them, with the elevations being in the form of at least two circular nipples being pressed into the depressions upon assembly of each packet. In one lamination per packet, serving as a separating lamination, cylindrical holes are punched instead of the depressions, the nipples of the neighboring lamination engaging into these holes. Laminations are thereby punched from the strip that respectively exhibit different outside contours, particularly different widths, and are joined with one another to form a packet that has a cross-section that is at least partially round, by virtue of the sheet metal packet having graduated edges.