A tightening device and a tightening method are able to check that a fastening member has been fastened to a desired set torque or greater after being tightened, without loosening the fastening member. The tightening device executes a first tightening process of adjusting the output of a motor after measured torque that is measured by a torque detector has reached a preset first control start torque, such that the measured torque reaches a preset first set torque in a phased manner through repeated increases and decreases in torque, and blocking power supply to the motor when the measured torque reaches the first set torque, and then executes a second tightening process of driving the motor at an initial output that is less than in the first tightening process, adjusting the output of the motor after the measured torque that is measured by the torque detector has reached a preset second control start torque, such that the measured torque reaches a preset second set torque in a phased manner through repeated increases and decreases in torque, and blocking power supply to the motor when the measured torque reaches the second set torque.


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    Title :

    Tightening device and tightening method


    Contributors:

    Publication date :

    2017-10-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B25B TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING , Werkzeuge oder Werkbankvorrichtungen zum Befestigen, Verbinden, Lösen oder Halten, soweit nicht anderweitig vorgesehen / B25F Kombinierte oder Mehrzweckwerkzeuge, soweit nicht anderweitig vorgesehen , COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR / B60B VEHICLE WHEELS , Räder für Fahrzeuge



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