SCREW FASTENING NUMBER CONTROL SYSTEM, SCREW FASTENING NUMBER CONTROL METHOD, PROGRAM FOR EXECUTING THE METHOD BY COMPUTER, AND RECORDING MEDIUM RECORDING THE PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a screw fastening number control system capable of preventing any error in the count value of a screw fastening number even when any come-out phenomenon occurs, or screws are additionally fastened.;SOLUTION: An additional fastening determination unit 11 refers to the minimum work time in a storage unit 3, the presence/absence of the torque-increase during the previous work in a previous work torque-increase presence/absence storage unit 8, and the screw fastening work time counted by a screw fastening work time counting unit 9 when the count of the screw fastening number from a screw fastening number counting unit 10 is notified. When the screw fastening work time is longer than the minimum work time or when any torque is not increased during the previous work, it is regarded that the screws are normally fastened, and the actual screw fastening number in a screw fastening number storage unit 12 is increased by one and counted up. When the screw fastening work time is shorter than the minimum work time, and the torque is increased during the previous work, it is regarded that the screws are not fastened normally, and the screw fastening number is not counted up.;COPYRIGHT: (C)2009,JPO&INPIT