Numerical control screw tightening machine

摘要

By utilizing a movable table (19), an electrical driver (21) attached to the table (19), a hole position detecting means (26) for detecting a hole position of the work roughly disposed beforehand, with using an ultrasonic element (53), the hole position can be detected precisely and a screw tightening can be executed exactly and automatically even when the hole position is so discrepant within predetermined area.