筆記本外殼鎂合金沖壓件模具設(shè)計(jì)[外文翻譯]

作者：Heng-Kuang Tsaia, Chien-Chin Liaoa and Fuh-Kuo Chen
臺(tái)灣臺(tái)北國立臺(tái)灣大學(xué)機(jī)械工程學(xué)院

 
摘要
在本研究中，用沖壓工藝在室溫下制造筆記本電腦頂蓋并運(yùn)用實(shí)驗(yàn)法和有限元分析法等方法分析鎂鋰合金板材頂蓋的受力情況。其中包括四種工藝過程，沖壓工藝開發(fā)，以消除在沖壓工藝中頂蓋的斷裂和起皺等缺陷。為了驗(yàn)證有限元分析，實(shí)際運(yùn)作沖壓工藝中使用0.6毫米厚的lz91，填補(bǔ)了這一空白。一個(gè)好的協(xié)議需要根據(jù)實(shí)驗(yàn)數(shù)據(jù)和有限元分析結(jié)果來保證精度和效率，因?yàn)樵诓煌胤叫枰暮穸确植家膊煌?。上?jí)成形lz91板在室溫下也表現(xiàn)在本研究中所成功制造的筆記本電腦頂蓋的情況。由于運(yùn)行過程本身能達(dá)到一個(gè)有效率的做法，以筆記本電腦形成鉸鏈與人數(shù)較少的運(yùn)作程序等在目前的方法中是必須的。它也證實(shí)了筆記本的封面案件，可以采用lz91鎂合金薄板進(jìn)行沖壓等工藝。它提供了一個(gè)電子工業(yè)新型替代材料——鎂合金。
關(guān)鍵詞：
筆記本; LZ91鎂鋰合金板材料; 多工位級(jí)進(jìn)模沖壓工藝; 沖壓成形
文章概要
1 ：導(dǎo)言
2 : 鎂合金板材的機(jī)械性能
3 : 有限元模型分析
4 ：多工位級(jí)進(jìn)模沖壓工藝
4.1 ：二工位級(jí)進(jìn)模沖壓工藝
4.2 ：四工位級(jí)進(jìn)模沖壓工藝
5 ：實(shí)驗(yàn)驗(yàn)證
6 ：結(jié)束語
鳴謝

Die design  for  stamping  a notebook case with magnesium alloy sheets
Heng-Kuang Tsaia, Chien-Chin Liaoa and Fuh-Kuo Chen , a, 
aDepartment of Mechanical Engineering, National Taiwan University, Taipei, Taiwan, ROC

Available online 8 December 2007.
Abstract
In the present study, the  stamping  process for manufacturing a notebook top cover case with LZ91 magnesium–lithium alloy sheet at room temperature was examined using both the experimental approach and the finite element analysis. A four-operation  stamping  process was developed to eliminate both the fracture and wrinkle defects occurred in the  stamping  process of the top cover case. In order to validate the finite element analysis, an actual four-operation  stamping  process was conducted with the use of 0.6 mm thick LZ91 sheet as the blank. A good agreement in the thickness distribution at various locations between the experimental data and the finite element results confirmed the accuracy and efficiency of the finite element analysis. The superior formability of LZ91 sheet at room temperature was also demonstrated in the present study by successful manufacturing of the notebook top cover case. The proposed four-operation process lends itself to an efficient approach to form the hinge in the notebook with less number of operational procedures than that required in the current practice. It also confirms that the notebook cover cases can be produced with LZ91 magnesium alloy sheet by the  stamping  process. It provides an alternative to the electronics industry in the application of magnesium alloys.
Keywords: Notebook case; LZ91 magnesium–lithium alloy sheet; Multi-operation  stamping ; Formability
Article Outline
1. Introduction
2. Mechanical properties of magnesium alloy sheets
3. The finite element model
4. Multi-operation stamping process design
4.1. Two-operation stamping process
4.2. Four-operation stamping process
5. Experimental validation
6. Concluding remarks
Acknowledgements
References