B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
153/37
B21D 3/16 (2006.01) B21D 3/04 (2006.01)
Patent
CA 1256784
ABSTRACT A device is described for straightening rotationally symmetrical, cold-deformable workpieces, wherein these workpieces are deflected between bearing and straightening points as far as the plastic stress region. The workpieces are simultaneously set in rotation and then, during the rotational movement, the deflection is continuously removed again. The invention is characterised in that the workpieces are guided between a stationary bearing surface and stationary upper rails, the workpieces being gripped between pairs of rollers which form a prismatic gripping device and roll on the bearing surface, the workpieces simultaneously travelling in the pairs of rollers and along the upper rails and thereby being simultaneously deflected. Very short piece times can be achieved because a plurality of pairs of rollers, each of which grips one partiacular workpiece, are continuously guided in one direction between the bearing surface and the upper rails behind one another with a spacing therebetween. In addition, the use of freely rotating rollers easily permits even components with considerably stepped diameters to be straightened. A fully automatic operation is easily possible, whereby the described device is achieved with only a few moving component parts.
499141
Justus Erhard
Perley-Robertson Hill & Mcdougall Llp
LandOfFree
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