| 摘要 |
<p>Provided is a threaded fastener tightening and loosening device capable of achieving operations of both tightening and loosening a threaded fastener at high speed and with high torque precision by means of a single rotation drive source. The threaded fastener tightening and loosening device is provided with a first input shaft (5) which rotates by being driven by an AC servo motor (3). A second input shaft (9) is connected to this first input shaft (5) via an electromagnetic clutch (8). Furthermore, an output shaft (11) to which a threaded fastener tightening tool is connected, is provided. The second input shaft (9) is connected to this output shaft (11). Also, the first input shaft (5) is connected to the output shaft (11) via a speed reduction device (12) and a tooth clutch (14). By controlling the clutches (8, 14) to suit the tightening process for the threaded fastener or the loosening process therefor, a switch is made between a state where high speed low torque rotation is transmitted from the second input shaft (9) to the output shaft (11) and a state where low speed high torque rotation is transmitted from the first input shaft (5) to the output shaft (11) via the speed reduction device (12).</p> |
