Patent ID: 6954048
Filing Date: 2005-10-11
Classification: B23P,B25B,Y10S,Y10T

Abstract:
1. An electric motor screw driver system, comprising: a driver having a first signal generation means for generating a rotation start signal representing to operate a fastening operation of the driver and a second signal generation means for generating a rotation stop signal denoting a stop of the fastening operation; a power controller for controlling the fastening operation of the driver by supplying electric power to the driver in response to the rotation start signal and ceasing the supply of electric power to the driver in response to the rotation stop signal; a driver monitoring means for monitoring the fastening operation of the driver based on predetermined fastening information, the rotation start signal and the rotation stop signal in order to determine whether the fastening operation is appropriately completed or not, to thereby generate an information signal based on a result of monitoring the fastening operation, wherein the driver monitoring means includes computation means for performing at least one test mode to determine a predetermined target time range included in the predetermined fastening information; and a display unit for receiving the information signal from the driver monitoring means to thereby display the information signal.