| 摘要 |
A drive mechanism is provided for backlash-free conversion of a rotary motion into a linear motion with the aid of a toothed belt and of a drive gear, in particular for a quick and reproducible positioning of tools or tool tables. At least one gear rack adjustable in one direction is present. Arcuate guides are provided at the two sides of the drive gear. The arcuate guides maintain the toothed belt in such engagement with the gear rack that one section receives the load and only a short, defined section of the toothed belt is disengaged from the teeth. Furthermore, the toothed belt is provided as an endless loop. |
