26 research outputs found
Intelligent dual curve-driven tool path optimization and virtual CMM inspection for sculptured surface CNC machining
This paper investigates the profitability of a dualâcurve driven surface finish tool path under the concept
of optimizing crucial machining parameters such as toroidal endâmill diameter, lead angle and tilt angle. Surface
machining error as well as tool path time are treated as optimization objectives under a multiâcriteria sense, whilst
a central composite design is conducted to obtain experimental outputs for examination and, finally, fit a full
quadratic model considered as the fitness function for process optimization by means of a genetic algorithm. A
benchmark sculptured surface given as a secondâorder parametric equation was tested and simulated using a
cuttingâedge manufacturing modeling software and best parameters recommended by the genetic algorithm were
implemented for validation. Further assessment involves the virtual inspection to selected profile sections on the
part. It was shown that the approach can produce dualâcurve driven tool trajectories capable of eliminating sharp
scallop heights, maximizing machining strip widths as well as maintaining smoothness quality and machining
efficiency