Cloud manufacturing provides a new networked manufacturing model for manufacturing industry. The knowledge of group enterprise in cloud manufacturing is distributed, polyphyletic, heterogeneous and dynamic. A model framework of knowledge management system is put forward based on the concept of knowledge as a service, which implements the tacit knowledge and the explicit knowledge sharing and reuse between the subjects in group enterprise. Then, the key problems of knowledge management in cloud manufacturing are discussed. Finally, a knowledge service application prototype of cloud manufacturing based on case base is presented.
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