圧粉磁心モータの金型寿命予測手法に関する検討

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2013/11/01

タイトル(英語): Study on Method to Predict Life Span of Die Used for Soft Magnetic Core Motor

著者名: 床井　博洋（(株) 日立製作所日立研究所），小林　金也（(株) 日立製作所日立研究所），長島　英明（(株) 日立製作所日立研究所），石沢　修一（(株) 日立製作所日立研究所），榎本　裕治（(株) 日立製作所日立研究所）

著者名(英語): Hirooki Tokoi (Hitachi Research Laboratory, Hitachi, Ltd.), Kinya Kobayashi (Hitachi Research Laboratory, Hitachi, Ltd.), Hideaki Nagashima (Hitachi Research Laboratory, Hitachi, Ltd.), Shuichi Ishizawa (Hitachi Research Laboratory, Hitachi, Ltd.), Yuji Enomoto (Hitachi Research Laboratory, Hitachi, Ltd.)

キーワード: 圧粉磁心，モータ，クローティース，金型寿命，応力解析　　soft magnetic composite，motor，claw-teeth，die life，stress analysis

要約(英語): This paper describes a method to predict the life span of a die used for motors manufactured using a soft magnetic composite; in the study, a claw-teeth motor was used. The method involves performing stress analysis for a die and carrying out fatigue tests using test pieces. In the analysis, the soft magnetic composite was considered to be in powder form on the basis of its yield function, which was derived using a simple method. In addition to the analysis, we describe a simpler and more effective method in which the soft magnetic composite is considered to be a boundary condition. In the fatigue tests, we used test pieces that simulated the shape and construction material of the die. To predict the life span of the die, we evaluate the SN diagram, which represents the relationship between the maximum stress and fatigue life, with respect to the stress generated in the die. The life expectancy of a new die, which is about 100 rounds of use, is found to coincide substantially with its actual life. Furthermore, we explain how it is possible to extend the life span of a die to the targeted life span, i.e., more than 200,000 rounds of use, by changing its shape to reduce the stress.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.133 No.11 （2013）

本誌掲載ページ: 1073-1081 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejias/133/11/133_1073/_article/-char/ja/