To avoid the effect of backlash, an electric way of driving system with double-motor is put forward. Based on master-slave control theory, the technology of double-motor anti-backlash driving and it's implementation are discussed. As an example, the using of the technology in a large automatic drilling machine with SIEMENS 840D NC and 611D servo is introduced.

The concept of military aero-remanufacturing-engine, produce request and correlation criterion are put forward. Thereby, mostly concept and criterion of common engine can be the same with aero-remanufacturing-engine. The inconsistent concept and criterion relative to common engine are only discussed.

Firstly, the typical multi-level process structure is constructed and the theory that the similar feature has the similar process is made full use. Secondly, the functional structures of the subsystems including process query, process evaluation and process design are studied and an  typical object-oriented process knowledge base is developed.

Proposed a service-oriented multiple process planning method. Based on the method, a complete multiple process planning information model is built with process specification language to provide consistent process data access service and service consuming. Finally, based on the proposed software architecture, a service oriented multiple process planning platform is implemented by using service-oriented architecture open source.