FASTENING DEVICE,申请号JP20130227520-传众专利搜索

FASTENING DEVICE

申请公布号：JP2015085471(A)

申请号：JP20130227520

申请日期：2013.10.31

申请公布日期：2015.05.07

申请人：

TONE CO LTD;FUJI HEAVY IND LTD

发明人：FUJIMOTO KATSUHIRO;KUSHIDA TOSHIHIKO;HIRAI TATSUO;TORIKAI YUKIO;NAKAHATA TATSUO;SAITO MANABU;WATANABE MASAO

分类号：B25B23/14

主分类号：B25B23/14

摘要：PROBLEM TO BE SOLVED: To provide a fastening device capable of checking that a fastening member is fastened with a desirable preset torque or more without loosening the fastening member after fastening the fastening member.SOLUTION: A fastening device includes a mode changeover switch 44 which changes over between a first fastening process and a second fastening process. In the first fastening process, after a measurement torque measured by a torque detector 50 reaches a preset first control start torque, the output of a motor is adjusted so as to reach a first set torque preset while increased and decreased stepwisely and repeatedly, and when the measurement torque reaches the first set torque, power supply to the motor is cut off. After the first fastening process, in the second fastening process, the motor is driven with an initial output smaller than that in the first fastening process, and after the measurement torque measured by the torque detector reaches a preset second control start torque, the output of the motor is adjusted so as to reach a second set torque preset while increased and decreased stepwisely and repeatedly. When the measurement torque reaches the second set torque, the power supply to the motor is cut off.