| 摘要 |
PURPOSE: An electric screwdriver system having a screw counter is provided to notify the state and the number of loose screws automatically. CONSTITUTION: An electric screwdriver system having a screw counter comprises a driver(100) having the first switching means(150) for transmitting a rotation beginning digital signal as a control signal and the second switching means(160) for transmitting a rotation ending digital signal; a controller(200) for controlling the rotation according to the signals; and a counter(300) for notifying the work error within the set parameter. The rotation beginning digital signal is activated all the time during the turn-on of the first switching means, and the rotation ending digital signal is activated in a while during the turn-on of the second switching means. |
