| 摘要 |
<p>The portable boring and welding machine (1) comprises a tool shaft (4) on which could be mounted means for boring and means for welding workpieces, the shaft (4) extending along an axis (A) and being driven by an electric motor (8); the motor (8) and the shaft (4) being connected by a helical gearwheel and worm pair (30), the helical gearwheel (19) being connectable to the tool shaft (4), and the worm (29) being connected to a drive shaft (9) of the motor (8) itself. <IMAGE></p> |
