Abstract
The CAM system for machining is introduced in many companies. But the determination of processing procedures, cutting conditions, etc. is left to the expert engineers. And the automation in consideration of engineer's experiences and know-how is difficult and is not put in practical use. In this research, in order to realize the automation, the expert system to select cutting conditions with processing data is developed. In this system, cutting conditions are reasoned using the processing case data. This system is not necessary to express engineer's experiences and know-how as a rule, like rule-based reasoning.
