The ever-increasing use of robots for everyday tasks makes it imperative that their construction is suitably robust. The German Aerospace Center (DLR) in Oberpfaffenhofen performs intensive research in the course of robot technology development. To ensure that the components used are able to withstand the loads to which they will be subjected, DLR uses Zwick testing technology to determine the relevant characteristic values.
At its Oberpfaffenhofen site DLR is developing an intelligent hand-arm system for use, among other things, in space applications. One of the prime development aims is to simulate human locomotor systems as authentically as possible using robot technology. This extremely highly integrated mechatronic system, with 52 drives and well over 100 sensors, is approximately equal to its human prototype in size, strength and dynamics.
DLR employs a Zwick testing machine to investigate the mechanical properties of components and their ability to cope with eventual operating conditions. The actuator cables used to operate artificial fingers are tested for endurance by means of creep tests; other components tested include springs and sensors. "The testing machine’s two test-areas plus the modular mounting system for test fixtures offers us the greatest possible flexibility for the numerous tests we intend to carry out," says Wieland Bertleff (Force Sensor Technology Development) of DLR.
