Improving free form surface machining performance by ball end milling model
by A.C. Manav, E. Akgun, I. Lazoglu
International Journal of Design Engineering (IJDE), Vol. 1, No. 4, 2008

Abstract: In CNC (computer numerical control) programs, cutting tool needs to move along a path described by a sequence of curves starting from the predefined Cutter Location (CL) points. In this article, cycle time is minimised and cutting forces are limited by a threshold for toolpath generation. In order to determine the cutting forces in each direction for all CL points a force map which overlapping with a uniform Cartesian mesh is constructed showing all possible cutting forces from each CL point to its neighbours. This map is obtained by pre-computation of force simulations in each direction. Force simulation of the newly developed paths and its experimental validation are obtained and compared. Moreover, forced-based feedrate scheduling strategy is utilised for the same free form surface to decrease cycle time. Feedrate is adjusted along toolpath to keep cutting forces at preset force value.

Online publication date: Thu, 30-Apr-2009

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