采用面向對象的思想，論述了 PLM 中基于零部件的產品數據的組織形式，包括
產品模型、定型產品。在此基礎上，提出了基于時間點衡量產品數據過程狀態的方法，結合工程變更來管理過程狀態的改變，為企業實現產品數據的全生命周期管理以利于信息的集成提供了新的思路。
關鍵詞：產品生命周期 建模 過程狀態工程變更
Abstract: An organization model of the product data based on the part in product lifecycle
management with the Object-Oriented method,including product model and case-hardened
product was discussed.Based on what was mentioned above scaling the process-status of product data with time and the management about process-status changing of product data with engineering change were put forward,Which provided a new idea for the enterprise to realize the product data management in all lifecycle and to facilitate information integration.
Key words: product lifecycle;modeling;process status;engineering change