The manufacturing grid is an effective manner of resource sharing in network environment. Modeling resources and constructing service node are the base. Firstly

manufacturing resources are classified from several angles of view according to various service types. Secondly

a unified abstract resource model is proposed

which is composed of a resource layer

an expression layer and an interface layer. All kinds of physical resources are contained in resource layer; resource data and information are encapsulated by XML Schema in expression layer; interfaces and operations are defined by using Web Service Description Language (WSDL) in interface layer. Lastly

being the validity check

an enterprise standard part library system (as software resource) and a numerical control machine (as hardware resource) are encapsulated into resource nodes.