Woodworking machine with linear direct drive

US7859142B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Hans Ulrich Armeit · Oerlinghausen, DE
• Ralph Burgstahler · Kandel, DE
• Zeljko Jajtic · Birkenfeld, DE
• Markus Knorr · Augsburg, DE
• Andreas Rust · Munich, DE
• Stefan Schiele · Forstinning, DE
• Hartmut Schirdewahn · Pyrbaum, DE
• Roland Schultheiss · Erlangen, DE

Key dates

• Filing date: Feb 7, 2006
• Grant date: Dec 28, 2010
• Expiry date: Jun 13, 2026

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K2213/03
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

The aim of the invention is to provide a robust, simple woodworking machine. To achieve this, the invention provides a machine comprising at least one linear direct drive, which contains a primary part (3, 3a, 3b, 4, 4a, 4b) with a first element (9, 10, 12, 14) for generating a first magnetic field and at least one additional element (17, 18, 20, 27, 28, 29, 30) for generating an additional magnetic field. The first element (9) for generating the first magnetic field is positioned, in particular, in such a way in relation to the additional element (17, 18, 20, 27, 28, 29, 30) for generating the additional magnetic field that the first magnetic field overlaps the additional magnetic field. The machine also comprises a secondary part (5, 6, 6a, 6b), which comprises magnetic return elements and is devoid of magnetic sources. According to the invention, the primary part (3, 3a, 3b, 4, 4a, 4b) and/or the secondary part (5, 6, 6a, 6b) is or are suitable for guiding or placing at least one workpiece and/or for guiding and/or placing at least one tool for machining the workpiece.