Development of Supporting System for Process Planning in Machining : Applicability to Product with a Large Number of Holes and Plurality of Objective Function

摘要

In order to improve the applicability to products having a large number of holes, the greedy algorithm is used in the process of searching for the solution. The constitution of the system was confirmed to be valid from a comparison between the machining time obtained by a proposed system and operator design. Then, the cutting force in milling and drilling processes performed on a workpiece having a large number of holes and steps is calculated through application of cutting models proposed by Usui et al., and the machining power and electric energy are estimated on the basis of the calculated cutting force. To enable process planning in which two objective functions such as machining time and electric energy are taken into consideration, it is proposed that convert those quantities to cost.