A device for the training of a different pieces of revolution deformable when cold, in particular, the axes of the shafts of the bolts and the pieces similar

摘要

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 characterized 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. It can be acheived in a very short time because a plurality of pairs of rollers, each of which grips one particular 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.