Information modeling is critical to the integration of conceptual design and process planning. In this paper, a conceptual process planning activity model and an object model developed based on the activity model to enable the integration are put forward. The process, resource, and cost/time types of data that are necessary for conceptual process planning have been collected and modeled using both IDEF0 and UML. In order to develop interface standards of different application system, information models have to be first developed to define the interfaces. An initial information model for conceptual process planning has been developed. This model includes an activity model and an object model for manufacturing process selection, resource selection, and cost and time estimation. The activity model sets the context in which the objects are used for information sharing and exchange. The object model defines classes used in conceptual process planning. The main purpose of developing this model is to initiate the development of standard interface specifications that are necessary for design and process planning integration.
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