| 摘要 |
<p>The tool e.g. electrical drill hammer (1), has a linear drive (3) for moving a tool (2) along a working axis (6). A gear (17) includes driven gear wheels (16, 19) combed with each other. A rotational axis (18) of one gear wheel is bent to the working axis. Another wheel is made of metal i.e. cupriferous alloy, and the former wheel is made of plastic reinforced with carbon fibers. A rotary driver (5) rotates the tool around the working axis. The former wheel is coupled between a motor (7) and the driver in a force flow path. The fibers are aligned along a radial direction of the former wheel.</p> |
