旋削加工における最適化の手法

工作機械の最適化制御に関する研究 (第2報)

抄録

Most analyses of performance index hitherto have been conducted on the basis of given tool life equations which usually give only a first approximation. These are satisfactory enough for programming of average numerically controlled machines, but not quick and accurate enough for the on-line optimizing control of a machine tool. In this paper a performance index suited to the on-line control of a machine tool has been implemented after extensive experiments. The optimization can be achieved by measuring the derivative of cutting force, which is proportional to the tool wear rate and by computing the performance index taking the influential constraints, which are stored in the computer as formulas or data, into consideration. The characteristic of this approach is program-aided control for constraints and on-line optimization for performance index taking cutting speed and feed as the variables. The simulation has been conducted for the economical assessment, and it has proved that 1/2 step strategy is practically feasible to search for the optimal point.