EVALUATION METHOD OF MACHINE HOUR OF PART BASED
ON CASE-BASED REASONING AND SML

YANG Qinghai¹  QI Guoning¹  HUANG Zheren²  ZHENG Keqin²

(1. Institute of Contemporary Manufacturing Engineering, Zhejiang University, Hangzhou 310027;
2. Hangzhou Steam Turbine Co., Ltd., Hangzhou 310022 )

Abstract: For a complex engineering-to-order(ETO) product, the evalua-tion results of machine hour of its parts are main basis to work out possible production program and calculate lead-time. How to measure standard machine hour and build SML for machine hour evaluation of parts are analyzed. The similarity principles and a process model for machine hour evaluation of parts are presented. In order to increase rationality and veracity of sam-ple parts selection, a SML-based identified method of similar parts is presented. Furthermore, a case-based reasoning(CBR) and SML-based evaluation method of machine hour of a part is presented. Taking machine hour evaluation of the spindle of industry stream turbine as an example, the CBR and SML-based evaluation method are verified and evaluation error is analyzed.

Key words: Machine hour evaluation Case-based reasoning(CBR) Tabular layouts of article characteristics Mass customization

CLC No: TP14 TH16

国家自然科学基金(60374057, 50575204)和高等学校博士点基金(20060335134)资助项目. Received 20060625, received in revised form 20061220