A design method for three-dimensional maintenance, repair and overhaul job card of complex products

•A method to design 3D MRO job card of complex products with 3D model is proposed.•Product 3D model is transferred from design phase to MRO phase using MBD.•This method realizes accurate, intuitive and non-ambiguous MRO order description.•The 3D MRO job card increases the efficiency and quality of complex products MRO.

Aiming to improve the feasibility of maintenance, repair and overhaul (MRO) planning, the accuracy of MRO description and the clarity of on-site guidance for complex products MRO job card, a design method for complex products three-dimensional (3D) MRO job card based on product 3D model and using the model based definition (MBD) technology was proposed. This method applies position–posture calculation of initial disassembly based on assembly constraints to realize the visual disassembly planning for complex products in 3D environment, uses dynamic viewpoint navigation method to implement the display of disassembly and assembly simulation process of parts conforming to the observation habit of human, adopts multi-view 3D annotation method to implement the separation showing for technical requirements from different MRO disciplines and operation tasks, and finally, transforms the MRO order information into 3D portable job card file based on lightweight model and releases it to MRO worksite. The aircraft right wing maintenance instance shows that this method can implement the intuitive, accurate and non-ambiguous MRO process description, improve the rationality of MRO planning, and increase the efficiency and quality of complex products MRO.