| 摘要 |
PROBLEM TO BE SOLVED: To improve the precision of a reference stock by calculating the number of defectives which are found in the postprocess of the casting process. SOLUTION: The defective rate of castings is calculated from a defective result inputted to a defective result input terminal 10 and a machining production result inputted to a machining production result input terminal 9. A necessary quantity of castings inputted to the machining production result input terminal 9 is multiplied by the calculated defective rate to calculate a predicted defective number. On th basis of a discard casting number inputted to a discard casting input terminal 6, a mean discard casting number in a specific period is calculated. The sum of the predicted defective number and the mean discard casting number is reflected on next lot production of castings as a production correction number. |
