Adaptive feedrates from geometry modeling for nc machining

摘要

The method involves generating initial workpiece geometry from a geometry modeling program using input stock cutting program. An NC program with coded instructions defining series of cutting tool motions, is provided to move workpiece at selected baseline feedrate and cutting speed instruction. Workpiece geometry is modelled continuously using input NC program. Material removal rate, average cutting force and cutting tool deflection are calculated for every motion of tool. The feedrate is adjusted based on modeling and calculating result to optimize productivity without violating user set constraints.