22nd European Conference on Operational Research, Praha, Çek Cumhuriyeti, 8 - 11 Temmuz 2007, ss.196
A Case Study: Component placement sequencing
of a turret style SMT machine
Levent Kandiller, Cankaya University, Department of
Industrial Engineering, Cankaya University, Ogretmenler ¨
Caddesi No: 14, 06530, Ankara, Turkey,
kandiller@cankaya.edu.tr, Savas Cengel, Z. Pelin Bayindir
The study aims to improve component placement sequencing of PCBs
produced on a turret style SMT machine in a leading Turkish electronics company. Because of the concurrent (turret,table,feeder) nature of
the machine movement, the sequencing problem is hard to solve optimally. We developed two heuristic approaches and two lower bounding
schemes. The heuristic solutions are compared with optimal solutions for
randomly generated PCBs, and with the lower bounds for real PCBs in
the production line. Our method yielded a considerable improvement (27
%) as compared to the company’s method.