THREADED FASTENER TIGHTENING AND LOOSENING DEVICE

WIPO Patent Application WO/2011/074543

A1

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).

Morinishi Satoshi (NITTO SEIKO CO, LTD. 20 Umegahata Inokura-cho, Ayabe-sh, Kyoto 54, 〒6230054, JP)
森西　智史 (〒54 京都府綾部市井倉町梅ヶ畑２０番地日東精工株式会社内 Kyoto, 〒6230054, JP)

JP2010/072396

June 23, 2011

December 13, 2010

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NITTO SEIKO CO., LTD. (20 Umegahata, Inokura-cho Ayabe-sh, Kyoto 54, 〒6230054, JP)
日東精工株式会社 (〒54 京都府綾部市井倉町梅ヶ畑２０番地 Kyoto, 〒6230054, JP)
Morinishi Satoshi (NITTO SEIKO CO, LTD. 20 Umegahata Inokura-cho, Ayabe-sh, Kyoto 54, 〒6230054, JP)

B25B23/14

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