Technological life-cycle analysis of ultra-precision machining technology: Forecasting perspective directions and tracking the critical transitions with evolution

Ultra-precision machining (UPM) is a key technology for producing high-quality components with exceptional form accuracy and surface finish, meeting the demand for miniaturization in modern manufacturing. This research provides a concise summary of the growth and strategic directions of UPM for its future advancement. Through bibliometric and thematic analysis, diffusion and technological life-cycle assessments, this study systematically evaluates the evolution and future trajectory of UPM. By applying the Gompertz growth model, this study traces the historical development of UPM, identifying its start in the 1990s and growth phase in the early 2000s, and subject to a maturation by 2050. The year 2000 is regarded as a crucial decade marked by notable technological progress driven by large programs and initiatives. The study also explores the potential impact of emerging technologies, such as artificial intelligence and blockchain, on the advancement of UPM. Future research should focus on integrating computational tools and developing hybrid machining methods to address challenges at the nano-scale surface roughness and microstructures achieved by UPM.