In this paper, a method is provide to determine the tolerances of the components based on computation
of digital model and data fitting, tolerances chain analysis on the aerodynamics edges, combining with equalized
tool design and process control of model based design (MBD) model. Varity of digital methods, such as laser tracker
and data fitting between MBD model and the product, is adopt to equalize the tolerances during assembling. The
structural interference can be avoided with this technique, making the product meet the demand of the delivery specifications.
Besides, it decreases the rates of tolerance exceeding and the cost of manufacturing. The accumulated tolerance
of aerodynamics can be reduced to 10% of designed demands during assembling with the method.