Research on machining process reliability in multi-procedure machining processes

The performance evaluation of machining procedures based on historical data is the key criteria in multi-procedure machining process planning. Current evaluation methods for machining procedures focus on the dimensional variations in key product characteristics, which may face the computation complexity when large number of procedures are involved. Therefore, this paper introduces the definitions of machining process reliability and corresponding machining process reliability block diagrams (MPRBDs), to be applied to evaluate the performance of procedures for machining process planning. The definition of machining process reliability is different from that of traditional reliability, and leads us to evaluate machining process´ performance of ensuring product quality characteristics in terms of reliability. The machining process reliability models are presented to describe the impacts between the machining procedures and on the machining process reliability as well.