Optimizing assembly cost estimation using 3C: focus on welding and mechanical fasteners
Optimizing assembly cost estimation using 3C: focus on welding and mechanical fasteners

Author(s): Afrim Gjelaj, Besart Berisha, Albi Macula
Subject(s): Economy, Business Economy / Management, Accounting - Business Administration, Business Ethics
Published by: Национално издателство за образование и наука „Аз-буки“
Keywords: cost estimation; assembly; automated calculation; optimization; cost analysis; welding and mechanical fasteners
Summary/Abstract: Accurate estimation of assembly costs is essential for enhancing manufacturing efficiency and competitiveness. This study investigates the application of the 3C (Crafts Cost Calculator) for modeling and optimizing the costs associated with welding and mechanical fastening in assembly operations. Optimization of bolted joints is essential not only for mechanical integrity but also for reducing system cost and weight (Croccolo, 2023). In contrast, welding processes, although structurally rigid, require precise control of parameters to ensure quality and minimize waste. Taguchi and gray relational analysis can significantly improve the quality and reliability of stud welding (Çinay, 2023), while temperature and time strongly influence weld performance and cost (Birtha et al., 2023). Through the 3C platform, this research models and compares the labor, equipment, and operational costs of both methods, integrating real manufacturing data to produce practical insights. Co-optimization of planning and supply chain decisions can substantially impact overall production cost (Nwodu et al., 2022), highlighting the broader implications of integrating digital cost modeling tools early in the design process. The findings offer a structured approach for manufacturers to select cost-effective assembly strategies and demonstrate the value of the 3C tool in supporting design and operational decision-making.

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