Adjustable, automatic belt tensioner for high speed FDM 3D printer. The bearing was used in two places: guiding the bearing housing and also acting as a support bearing for a simple, pin shaft.
Problem:
We needed a smooth adjustment of the tension force, therefore a spring mechanism with perfect guide ability was needed. Pairing the igus bearings with ISO pins; we get a perfect clearance for bearing operation. For the support of the timing belt shaft to achieve a minimal mechanical dimension, the same bearing was used. Plastic also has a damping ability which is favorable for 3D printing machinery.
Solution:
Good, reliable and robust belt tensioner without any need of maintenance. The tensioner has been built and we are very satisfied with its operation.
