| 摘要 |
PURPOSE: A bolt tightening device is provided to improve assembly productivity by easy tightness of bolts as a support member generates friction force corresponding to tightening repulsive force. CONSTITUTION: A bolt tightening device comprises a housing(30), a combining unit(40), and a support member(50). A driving source is embedded in a housing. The housing is formed along a longitudinal direction. The driving source receives the torque from the driving source and the combining unit. The combining unit is formed at one end of the housing and is coupled with the head unit of the bolt. The support member offsets the tightening repulsive power generated by the combining unit during the tightening of the bolts. |
