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The paper presents a methodology for the design of the production product from the point of view of manufacturability design criterion. The evaluation method from the point of view of machining, assembly and organization of production was discussed on the example of a modified method of assessing the technological character of the structure from the point of view of the assembly operation (Design for Assembly – DFA).

The study proposes a procedure for assessing the designed manufacturing process for a new products. The purpose of the developed procedure is to evaluate the production process from the point of view of product design manufacturability of a unit and the small-lot production process. Evaluation of the design for the production process of a new product is based on criteria like process performance efficiency. Fuzzy logic-based methods were used to assess the designed process at different stages of its implementation—processing, assembly and organization of production. The developed method was illustrated by an example. The method presented in the study may be used by designers of production processes and employees of companies involved in the rationalization of already implemented production processes. The proposed method applies specifically to small-lot and unit production.