| 摘要 |
PROBLEM TO BE SOLVED: To further reduce reaction in an impact screw fastener with an electric motor as a rotational driving source. SOLUTION: In this control method of the impact screw fastener with the electric motor as the rotational driving source, the motor is driven by a current pulse DP so that a rotating speed becomes a pulse shape on a time base by intermittently supplying electric power to the motor. When the rotating speed of the motor becomes maximum every time in pulsing, the current pulse DP is turned off, and supply of the electric power is stopped. COPYRIGHT: (C)2005,JPO&NCIPI
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