Storage technology & energy chain for training robots

• What was needed: dryspin® trapezoidal screw drives, iglidur® plain bearings, drylin® shafts and profile guides, energy chain
• Requirements: 100 % lubrication and maintenance-free, dust and dirt resistance, robustness, long service life, quiet running
• Industry: Mobility & Rehab, Rehab & Fitness
• Success for the customer: The igus® components used are quiet, clean, lubrication- and maintenance-free and have been used in the training robot for more than ten years - without any complaints.

ddrobotec training robots are self-learning systems that adapt to the specific needs, fitness level and progress of each user. Training takes place in a standardised environment in which training intensity, duration and cognitive engagement are precisely measured and analysed. Artificial muscles replace traditional weights and electric motors. Sophisticated control algorithms ensure smart load adjustment - individually, in real time and independent of the leg. The technology enables highly dynamic, performance-adapted strength training that can be finely dosed and is gentle on the joints.

In order to offer a maintenance-free and absolutely safe system, the designers at Dynamic Devices were looking for suitable components. The initial requirement was for a plain bearing solution without grease and constant lubrication, as dirt, dust and grime were constantly collecting here.

When the design engineers first heard about the lubrication-free plastic solutions from igus®, they were initially a little sceptical about being able to easily replace the previous bronze nuts, metal recirculating ball bearing guides and brass parts with plastic parts. But the tests carried out and the results were so impressive that these concerns quicklydisappeared. Dynamic Devices then began to gradually replace more and more plain bearings and lead screw nuts with igus® components - it even went so far as to make design changes in order to be able to convert the entire bearing technology to igus®

products. ® In the training robots,dryspin® lead screw nuts and trapezoidalthreaded spindles, drylin® W-linear guide, shafts and our small easy chain® energy chain for the safe guidance of the cable. The iglidur® plain bearings

and dryspin® lead screw nut used are made of wear-resistant high-performance polymers and are therefore 100 per cent lubrication and maintenance-free. Two spindle systems with a linear guide are used for the seat adjustment and for additional safety precautions. Hard anodised aluminium is used as the rail material for the drylin® W profile guides, which ensures the best friction and wear results for profile guides. The absence of lubrication makes the profile guide system extremely resistant to dirt and its cleanliness also makes it suitable for applications in clean and hygienic environments such as hospitals and rehabilitation centres.

In addition to standard products, ddrobotec also received lead screw nut, guidance and spindle, which igus® manufactured according to the customer's individual requirements.