Niu, Geng, Han Li, and Pengfei Zhao. “Design of an Auxiliary Manipulator for Threaded Hole Machining in Narrow Spaces”. International Journal of Mechanical and Electrical Engineering 8, no. 1 (January 20, 2026): 68–73. Accessed June 14, 2026. https://wepub.org/index.php/IJMEE/article/view/5909.