| 摘要 |
<p>The gear has two planetary wheels (4) staying in contact with a sun wheel (2) and held by a pinion cage (3). An inner toothed hollow wheel (5) stays in contact with the planetary wheels. The sun wheel, planetary wheels and the hollow wheel are formed from plastic and are formed pairwisely from polyoxymethylene and polybutylene terephthalate. The planetary wheels have a module of approximately 0.1 millimeter to 0.6 millimeter, where the wheels stay in contact with each other. The planetary wheels have teeth width (b), which corresponds to the value of their diameter.</p> |
