Title: Versatile microforming press

Authors: Hendrik Schulze Niehoff, Frank Vollertsen

Addresses: Bremer Institut für angewandte Strahltechnik (BIAS), Klagenfurterstr 2, Bremen 28359, Germany. ' Bremer Institut für angewandte Strahltechnik (BIAS), Klagenfurterstr 2, Bremen 28359, Germany

Abstract: Microforming presses are barely found on the machine tool market. The Bremer Institut fur angewandte Strahltechnik (BIAS)has developed and built a high precision and high dynamic press with a free stroke and force control, featured with a double axis design. The technical possibilities available on the market have been exhausted in order to fulfil these diametric requirements. The result of this development is a new microforming press with a stroke height of 200 mm at each axis. The contactless electrical linear drives in combination with an optical position measurement system and air bearings allow a movement of the ram free of friction and clearance and thus high precision force measurement and control. An operational-test measurement with laser interferometry showed that 1250 strokes per minute at 1 mm stroke travel can be made, whereby the ncertainty of position is at 3 µm and the repeatability at 1 µm.

Keywords: microforming; forming press; machine tool design; press design; force measurement; force control; sheet metal forming.

DOI: 10.1504/IJMPT.2008.022144

International Journal of Materials and Product Technology, 2008 Vol.32 No.4, pp.423 - 433

Published online: 19 Dec 2008 *

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