Many studies and reports support the significant impact of
the application of group technology on various aspects of
product design and manufacturing. The fact that group technology
is the common solution to similar problems is the main
source of such impact. In this paper, one of the less frequently
utilized features of CNC technology known as parametric
part programming is used to implement the common solution
feature of group technology in processing a set of similar
parts. Using three part families, the advantages of blending
the concept of group technology and parametric programming
for CNC machining operations are illustrated. The efficiency
improvement due to the use of parametric programming in
terms of number of setups and size of program is discussed.