Study on Key Technologies in Product Lifecycle Data Management System for Spindle Bearings of Numerically Controlled Machine Tool

In order to fulfil the lifecycle data management for the spindle bearings of CNC machine tool, this paper firstly presented a bearings-lifecycle-oriented data management model, in which the bearings' code re-factoring methods and a ontology-based entity relationship (E-R) model are discussed in detail. Secondly, the key technologies of the data management system that utilized the presented data models, including the architecture, database design and integration schemas are described as well. Finally, a component-based system framework is presented to solve the heterogeneous problem in the process of XML-based bearing data extraction, transformation, cleaning and loading. An application demo will also be given to demonstrate the unity of management, integration, tracking and feedback for the lifecycle data management for spindle bearing.