Summary: An Integrated Cutting Tool Selection and Operation Sequencing Method
H. M. Rho', R. Geelink*, A H. van 't Erve2.H. J. J. KalsZ(1); ' CAD/CAM Research Laboratory, Korea Institute of Science
Received on January 14,1992
and Technology, Seoul, Korea; Laboratory of Production Engineering, University of Twente, Enschede/Netherlands
Within the P.%RTC'APP system. the selection of an optimum operation sequence is related to the modules which perform the machiningmethtdand
cutting tool selection. This study analyzes the technical and economical aspects of operation sequencing and presznts a method which is capable of
senerating an ciptimum solution o n the basis of previously selected machining operations and alternative cutting took per operation. Precedence
relations between operations provided by the methodselector are usedasconstraintswhich shouldnot beviolated. The operationsequencing method
simulraneously assigns single tocils from a list of alternatives to tach operationand manipulatesthe operation sequence inorder t o minimize the total
number of toolchanges and the number of required tools.
Kcywordx C-!P f OpcrurionSeqwncing, Tool Srlccrion.
P,4RI' (Planning of Activities. Resources and Pchnolllgy) is a generative
CAPP sybtein developed at the Laboratory of Production Engineering of the
UniversityofTwente [ IJ... [J].Thismodiilarsystem coversall themajor
processand uperationplanningfunctions required for I!,iDprismaticcompo-
nents which have to be machined on CYC machiningcenters.
The generative processplanningsystem is aimedat small batch part manufac-
turing and its objectives are to: