Design of a 3-DOF PKM module for large aircraft component machining

This paper presents a novel 3-DOF PKM module that can be integrated into a manufacturing cell for large aircraft component machining. The design features of this module are briefly addressed. On the basis of the formulation of the overall Jacobian matrix, the design issues in this article are mainly focused upon the dimensional synthesis and stiffness evaluation with a goal to provide engineers with informative guidelines to conduct the detailed mechanical design, leading to a prototype machine being built by machine tool industry.