As the core component of modern mechanical transmission, the precision rotary motion mechanism and its drive system have wide applications in aerospace, robotics, and other fields. This article systematically reviews the design principles, performance characteristics, and research progress of various rotational motion mechanisms and their driving technologies. The working principles, advantages, disadvantages, and applicable scenarios of gears, drive belts, sprockets, camshafts, ratchet claw mechanisms, and linkage mechanisms were analyzed in terms of traditional mechanisms. In terms of new mechanisms, we focused on exploring the innovative design and application potential of intermittent indexing mechanisms, magnetic gears, 3D-printed spherical gears, and multi-link mechanisms. In addition, the paper compared the performance differences of electric, hydraulic, pneumatic, and piezoelectric drive methods. Research has shown that through material innovation, structural optimization, and intelligent control, there is still significant room for improvement in the load capacity, accuracy, and reliability of precision rotary motion mechanisms, providing theoretical support and practical reference for innovative design and engineering applications of future mechanical transmission technologies.

As a core component of modern mechanical transmission, rotary motion mechanisms and their drive systems have broad applications in aerospace, robotics, and other fields. This article systematically reviews the design principles, performance characteristics, and research progress of various rotary motion mechanisms and their driving technologies. The advantages, disadvantages, and applicable scenarios of traditional mechanisms such as gear mechanisms, drive belt mechanisms, sprocket mechanisms, cam mechanisms, ratchet and pawl mechanisms, and connecting rod mechanisms were analyzed in detail. The innovative design and application potential of new mechanisms, such as intermittent indexing mechanisms, magnetic gears, spherical gears, and multi-link mechanisms, were also explored. In addition, the paper provides a detailed comparison of the performance differences among electric, hydraulic, pneumatic, and other driving methods and summarizes the optimization directions for efficient driving systems. Research has shown that through material innovation, structural optimization, and intelligent control, there is still significant room for improvement in load capacity, accuracy, and reliability of rotary motion mechanisms, providing theoretical support and practical reference for future mechanical transmission technology development.

This paper is concerned with Nakajima test and forming limit curve (FLC) of stainless 304 ultra-thin sheet metal in relation to the strain rate effect. The mechanical properties related to the micro structure of specimens are studied based on quasi static tension test. The forming limit curves are constructed by Nakajima tests with two different strain rates, quasi-static and high speed strain rate. Compared with the quasi-static FLC, the high speed FLC of the 304 ultra-thin metal sheet for all specimens with different thickness is lower through the entire region. The results confirm that the strain rates have a noticeably influence on the formability of ultra-thin sheet metal. The deformation and fracture behavior for high speed forming is discussed based on the previous study. The forming limit curves should be considered in the design in high speed ultra-thin sheet metal forming processes.