this paper, first the literature of single and mixed model assembly line balancing, which plays an important role for the
design of assembly systems, is reviewed. The associated literature matrixes reveal that team-oriented approaches do not
have an intensive research area. Second, a team-oriented mathematical programming model for creating assembly teams
(physical stations) in mixed model assembly lines is devised. Owing to the fact that this model is NP hard, a scheduling
based heuristic algorithm is developed. The mixed model assembly line design methodology, which includes a teamoriented
algorithm as a step, is proposed. Both model sequencing and worker transfer systems are included in the methodology.
The algorithms for each step of the methodology are also coded by using MATLAB and MS Excel is used as the
user interface. Furthermore, the presented methodology was applied in a chosen segment of a real life mixed model tractor