Adjustable Compensation Units without pneumatic system

Schunk offers a portfolio of compensation units to help a robot avoid malfunctions and damage to tooling or the part due to deviations in position because of robot or workholding tolerances.

Depending on the size of the AGE-F compensation unit, it can balance planar off-sets between +/-1.5 and +/-5 mm without twisting or tilting the workpiece. The flexibility of the unit is defined by means of three springs. Since the AGE-F works mechanically without any pneumatic elements, it is very flat and particularly suitable for applications in narrow machining areas. Instead of sliding guides, it is equipped with smoothly running roll guides. Spring-actuated resetting pistons centre the unit automatically at a repeat accuracy of 0.003 mm. For robot fastening the AGE-F is equipped with an ISO flange mounting interface. This enables the mounting of the PGN-plus and PZN-plus units. Two teachable magnetic proximity switches allow monitoring of deflections in X and Y direction at two positions each. The Schunk TCU compensation unit has base plates that are connected with elastomer pads. This enables the TCU units to compensate in X, Y and Z axes and corrects angular errors to result in a rotational compensation. The compensation paths in the X, Y and Z axes are 0.4 to 1 mm, depending on the size, with compensation angles of between 1 and 3°. For fast and precise assembly, palletising or insertion of workpieces at constant positioning points the Schunk AGE-K compensation and adjustment units are the product of choice. The positions of these units are mechanically adjusted via a spindle drive and are then clamped. Without swinging or snapping back, the unit holds the defined position steady and moves in that direction. The compensation stroke in X and Y direction amounts to +/-4 or +/-5mm, depending on the size of the unit.