Incremental forming technology

characterized by considerable flexibility

has emerged as a significant development in the domain of sheet metal forming. Nonetheless

single-point incremental forming (SPIF) encounters significant challenges

including limitations in forming precision

quality

and degrees of freedom. The double-sided incremental forming (DSIF) technology

facilitated by the coordinated motion of master and slave toolheads

effectively addresses the shortcomings of SPIF and is particularly well-suited for the manufacturing of curved

thin-walled

and complex-shaped aerospace components. This study systematically reviews the research framework pertaining to this technology

concentrating on three essential directions: equipment development

process parameter optimization

and defect control. The current technological development status is comprehensively analyzed from the perspectives of multiaxis trajectory planning

closed-loop feedback control

forming tool head types

and multi-physics coupling. The results indicate that DSIF significantly improves forming accuracy. Nonetheless

technical bottlenecks still exist in the coupling mechanism of high-degree-of-freedom tool heads

quality consistency of complex curved surface parts

and the loading of auxiliary energy fields such as magnetic

thermal

and ultrasonic fields. Future research should integrate technologies such as digital twin to establish intelligent closed-loop control systems

thereby driving equipment toward higher precision and intelligence. Furthermore

the exploration of integrated automated production lines that combine incremental forming with additive/subtractive manufacturing is expected to provide new paradigms for the fabrication of complex curved components.