軸對稱引伸沖模設計及缺陷診斷之研究

Investigation of Design Variables of Axisymmetric Deep Drawing

鍾明裕(Ming-Yuh Chung)

指導教授 ： 李碩仁

元智大學/工程學院/機械工程學系/碩士(1992年)

摘要

本文主要探討軸對稱板金引伸成形時的受力情況，並指出可能發生的缺陷
。對於單工程深引伸成形分別以實驗、理論分析、電腦模擬(ABAQUS)等，
作為深引伸模具設計時各參數及相關製程條件的設定，以期能縮短深引伸
模模具開發期，並提昇產品的品質，增加市場的競爭力。本文的研究重點
如下︰ 1. 不同幾何形式的壓料板對引伸條件產生不同程度的影響，包括
水平模式、傾斜模式、咬唇模式等三種模式，其中傾斜模式可提高引伸率
，咬唇模式可降低壓料板壓力(BHF)。 2. 由工作站級的軟體ABAQUS作引
伸模擬分析，與實驗所得的結果，分別建立成形極限圖(FLD)、極限頂高
圖(LDH)、壓料板壓力與引伸極限圖(BHFDH)等圖形，作為缺陷破壞診斷之
應用，判斷不同參數的影響趨勢，以為模具設計修改的依據。 3. 液壓引
伸成形與傳統引伸成形兩種方式，由實驗的結果相比較，前者可提高板金
的成形性及產品品質。

關鍵字

深引伸 ； 張伸 ； 壓料板型式 ； 逆向液壓引伸

並列摘要

The axisymmetric deep drawing process was studied in this
thesis. The potential defects in its forming process were also
identified. Experimentation, theoretical analysis and numerical
simulation were employed to investigate variables of single
action deep-drawing die design and parameters of its forming
processes. It will result in reduction in die design cycle,
improvement of product quality and increased competitiveness.
Salient results of this study were summarized as follows: 1.
Geometric effects of balnk holders such as horizontal,
inclination and draw bead types, on the drawing process
parameters were studied. The inclination type of blank holder
was found to improve drawability while the draw bead type may
reduce blank holder force. 2. Numerical solutions from ABAQUS
FEM analyses were verified through drawing experiments. These
results were also utilized to establish FLD(Fomring Limit
Diagram), LDH (Limit Drawing Height), BHFDH(Blank Holder Force
and Drawing Height) charts. These charts were valuable in die
design process in two aspects. One is the assistance in
interrogation of defects occurance.The other is to study the
effects of design parameters on process control and die
components. 3. Through experimentation, hydroforming was found
to have greatly improved drawability and quality of deep
drawing processes.

並列關鍵字

DEEP DRAWING ； STRETCHING ； BLANK HOLDER TYPE ； HYDROFORMING