Papers by Keyword: Off-Line Optimization

Abstract: Maximally utilizing the capabilities offered by the feed drive systems in the CNC machining can both increase productivity and improve product quality. In this study, a framework of off-line feed rate scheduling was presented and a turning machining simulation and feed rate optimal system was developed. The system take advantage of virtual machining acquires cutting parameters and predicts cutting forces and cutting power. Constant cutting power was used as an objective to optimize feed rate, the feed rate in NC program was re-scheduled. The experiment results show that machining time is reduced and machining stability is improved by using the optimized NC program.

Abstract: Traditional adaptive control technologies in machining process optimization are limited in applications because they depend much on sensors, controllers and other hardware. An off-line optimization method for end milling process with constant cutting power is presented. On taking advantage of virtual machining which simulates milling process, acquires cutting parameters and predicts cutting forces, method taking constant cutting power as an objective is discussed to optimize feed rates and cutting speeds. Based on optimal result, the feed rates and spindle revolutions in NC program are re-scheduled. Controlled milling experiments show that machining time is reduced and machining stability is improved by using the optimized NC program.