Plate-edge machining apparatus

Plate edge machining apparatus, comprising means for supporting a metal plate to be machined;

• alignment stop means operatively connected to the support means, said stop means being movable into a position spaced from the support means for positioning a plate border of the metal plate into a machining position spaced from the support means;
• a plate holder movably mounted above the support means for pressing the metal plate against the support means in an area adjacent the plate border;
• a fixed sliding guide extending substantially parallel to the stop means;
• a tool carriage being reciprocable along the sliding guide;
• a pair of tool heads each carried by the tool carriage and respectively associated with upper and lower plate border edges to be machined, each tool head including a tool carrier having a pair of cutting plates mounted in spaced relation from each other, a pair of rollers each respectively mounted in a leading position adjacent each one of the cutting plates for limiting the cutting depth of the corresponding cutting plate during the cutting stroke, said cutting plates being mounted between said rollers, means pivotably supporting said tool carrier for pivoting about a tilting axis extending at substantially right angles to the sliding guide and for moving the tool carrier alternately into two angular positions respectively corresponding to a direction of travel of the tool carriage, a cutting plate entering into machining engagement with an associated plate edge in each of said angular position.