Abstract
The production of parts with complex-shaped surfaces is one of the most important and technologically demanding tasks in modern mechanical engineering.Such surfaces are widely used in aerospace engineering, automotive manufacturing, energy systems, shipbuilding, medical equipment, and precision instrument production.Increasing requirements for dimensional accuracy, surface integrity, and manufacturing productivity have stimulated the development of advanced machining technologies and intelligent manufacturing systems.This paper presents a comprehensive review of modern methods used for machining complex-shaped surfaces, including multi-axis CNC milling, grinding, electrical discharge machining, electrochemical machining, laser processing, ultrasonic machining, and additive manufacturing.The advantages, disadvantages, technological features, and industrial applications of each method are analyzed.Special attention is paid to CAD/CAM technologies, digital manufacturing, Industry 4.0 concepts, and process optimization techniques that improve machining accuracy and production efficiency.The study concludes that combining modern machining technologies with computer-aided manufacturing significantly enhances product quality while reducing production costs and machining time.