What should you keep in mind when testing a robotic gripper?

First of all, there is a need to see if the objects are standardized or if there are any geometrical variations between them. If there are, the main material used to manufacture the claw needs to be more elastic than plastic, or even have a compensation mechanism. After that, there is a need to analyse the coefficient of friction between the materials of the object and the claw, and see if it is enough for the operation needed. With all that data, it is possible to build a prototype of the claw, that needs to be tested constantly in different types of operations and angles and environmental temperatures, and all these tests need to be observed and cataloged.

Part Shape Accessibility & Part Consistency Part Weight Orientation & Dimensions Size Variation Air Pressure Grip On Open or Close Velocity Tooling Length Tooling Configuration Product Retention Environment Synchronous Operation Switching Options

Die Aussage bezüglich pneumatischen Greifern kann so generell nicht getroffen werden. Es geht generell mehr um eine passende Klemmkraft, der jeweiligen Oberfl?che und der auftretenden Beschleunigungen im Betrieb. Heute gibt es pneumatische Greifer für hohe Kr?fte sowie für sensible Anwendungen.

Selecting the right test object is paramount when evaluating a robotic gripper. The chosen object should mirror the gripper's actual use case, like using boxes for a warehouse gripper. Matching the object's characteristics with the gripper's capabilities, considering factors such as weight and fragility, ensures realistic testing. For instance, a pneumatic gripper may struggle with heavy or slippery items. This thoughtful selection not only produces more accurate results but also prevents potential damage to the gripper during testing.

Para as pin?as é muito importante saber seu peso, for?a máxima de trabalho, centro de gravidade e inércia, momento linear e angular. Existem muitos recursos em rob?s que auxiliam nesse setup, até instala??o de sensores. Em caso pin?a com servomotores é importante verificar cabos durante o processo.

When testing a robotic gripper, choosing the right test object is crucial. The selected object should mirror real-world tasks and align with the gripper's type and size. For instance, a gripper intended for warehouse use might be tested with a representative object like a box or pallet. It's essential to avoid objects that are too heavy, fragile, or slippery, depending on the gripper type. Additionally, adjusting the gripping force is vital; it should be sufficient to secure the object without causing damage. This force can be modified by altering pressure, voltage, or current, and utilizing sensors for real-time monitoring ensures optimal performance.

Das ist gerade bei modernen Greifer sehr wichtig! Wir haben bereits Erfahrung mit Servo-Greifer gesammelt, welche nach einer gewissen Zeit automatisch in einen Standby-Modus wechselten. Dabei hatten sie dann weniger Greifkraft, was das Werkstück zum Verrutschen bringen kann.

We all are aware that the ultimate appearance of the gripper may vary, particularly in custom-made grippers. In such instances, it is crucial to modify the design to align with the actual gripper. This design update holds significant importance in applications like bin picking, where the CAD model of the gripper needs to be uploaded to the vision system.