| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for improving a technology for managing the working precision of each working step or a technology for increasing the tracking precision of a workpiece concerning workpiece management. <P>SOLUTION: A sensor 21 reads workpiece ID from each workpiece 10 in a casting step. A data collection PC 32 collects working information from each of a plurality of working machines. A sensor 22 reads workpiece ID from each work piece 10 in a conveyance step. On the basis of the workpiece ID in the casting step and the progress circumstance data of each working machine included in the working information, a database server 40 performs the tracking of the progress circumstances of each workpiece 10 to be advanced from the casting step through the plurality of working machines to the conveyance step, and on the basis of the comparison of the workpiece ID of each workpiece 10 which has reached the conveyance step to be acquired from the result of tracking with the workpiece ID to be read in the conveyance step, the database server 40 corrects the result of tracking. Furthermore, a database in which the working information about the plurality of working machines to be acquired for every workpiece 10 is associated with the workpiece ID of the workpiece 10 is created. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
