This paper referred to the massive domestic and foreign technical material, elaborated in the sheet forming value simulation theory essential technology in detail, points out when analysis sheet forming question should use the big distortion ball plasticity fem and introduce the application characteristic and the function summarizes of the sheet forming simulation software dynaform. secondly, analyzed the cover forming characteristic, simultaneously introduced the influence cover forming factor in detail : such as ramming direction, the craft addendum surface and the material pressing surface, the radius of convex - concave mold, draw bead, pressure strength, blank size and craft margin and so on. and simulates many typical automobiles cover panel with software : such lateral board, back taillight pedestal and storage cover
其次，分析了覆蓋件成形的特點和要求，同時詳細介紹了影響覆蓋件成形的因素如沖壓方向、工藝補充面和壓料面、凸凹模圓角、
拉延筋、壓邊力、坯料尺寸和工藝切口等，並用數值模擬軟體對多個典型的汽車覆蓋件汽車后側圍板、后燈座以及轎車后備箱蓋的沖壓成形情況進行模擬，用模擬結果優化
拉延工藝方案，比較了內覆蓋件和外覆蓋件在成形特點和要求的一些異同點，以及常見的起皺、
拉裂和回彈、成形不足等缺陷的產生機理和相應對策，重點介紹工藝補充面和壓料面的設計及優化方法，因為
拉延是沖壓工藝的關鍵工序，而工藝補充面和壓料面的設計是
拉延工序的關鍵，對消除缺陷至關重要。
Drawing technique and punching simulation of inside board of veil framework up - transom
汽車面罩骨架上橫梁內板
拉延工藝分析及沖壓模擬
Study on drawing processes for tailor welded blanks of different thickness
差厚拼焊板
拉延成形工藝研究
Strain analysis of drawing process
拉延工藝過程的應變分析
Standard specification for copper rod drawing stock for electrical purposes
電氣用再
拉延的銅條材的標準規范
Cam drawing press
凸輪式
拉延壓力機
Carbide draw ring
硬質合金
拉延環
The applications of the modularization of the mould ' s surface structure for vehicle cover panels
的汽車覆蓋件
拉延模結構參數化設計
Spring back and its compensation test in deep - drawning process of automobile panels by fem
汽車覆蓋件深
拉延有限元模擬過程中的回彈及補償試驗
Manufacturing processes forming under combination of tensile and compressive conditions - part 5 : forming by raising ; classification, subdivision, terms and definitions
拉伸和加壓成形加工工藝.第5部分:凸緣
拉延成形.分類
The following processes do not require the application of pressure : casting, （ 流 延 ） dipping, （ 蘸 涂 ） spreading, （ 拉 延 ） coating, （ 涂 布 ） impregnating, （ 浸漬 ） and sintering （ 熔 結 ）
下列的加工過程不需要壓力作用：流
延，蘸塗，
拉延，塗布，浸漬和熔結。
A finite element model describing the drawing process of the heat - shield panel of automobile engine is established by using the commercial dynamic explicit code ls - dyna
摘要使用基於動態顯式演算法的商業軟體ls - dyna建立了某汽車發動機隔熱罩
拉延成形的有限元模型，通過所建立的有限元模型分析了壓邊力對
拉延成形的影響。
Standard part and feature library system development for automobiles ’ draw dies should be based on the actual work manners and work contents. this thesis concludes the procedures and work contents about the draw die design of hamc in detail
加強模具cad方面的研究，對于推動我國模具工業的發展有重大的意義。針對工廠的實際工作方式、工作內容進行系統開發，是開發汽車
拉延模標準件庫及特徵庫的指導思想。
This paper take the junction panel of the front reinforced beam in the back automobile floor for the example, introduces the drawing die design process, which proves this method simplified the design process, enhanced the rated capacity
本文以汽車后地板前加強梁左右連接板為例介紹了汽車覆蓋件
拉延模具設計，經過實踐應用，證明該方法簡化了設計過程，提高了設計效率。
Abstract : exposition of friction, wearing characteristics and lu bricating mechanism in sheet forming of drawing with exploration of problems in applying lubricant during drawing, which have provided selection of lubricant in practical production with theoritical basis and usable references
文摘:論述了板料
拉延成形時的摩擦、磨損特徵和潤滑機理，探討了
拉延時潤滑油的使用問題，為生產實際中潤滑油的選擇提供了理論根據和實用參考。
Improve the parametric modelling function of the sustaining platform on the basis of the software ’ s function and further studying the realization method of standard parametric model. sort and summerize the standard parts of the draw die. add the management function for the standard part library
2 ）在研究標準零件參數化模型的實現方法基礎上，結合系統軟體的功能，改進了支撐平臺的參數化建模功能，對
拉延模設計過程中用的標準件進行分類、總結，實現了較為完善的標準零件庫的管理功能。
3. conclude and class the familiar feature in structure design of the non - standard parts used in the draw die on the basis of studying the feature cad method. summerize the feature restriction parametric according to the actual experience and build up applied parametric feature library of the draw die combined with the feature design function of the unigraphics platform
3 ）在研究特徵輔助設計方法的基礎上，對
拉延模非標準件的結構設計中的常見特徵進行歸納、分類，並根據實際經驗總結出相應的特徵約束參數，結合unigraphics平臺的特徵設計的功能，建立實用的
拉延模參數化特徵庫。
On the basis of being familiar with the functions of unigraphics system, the thesis elucidates the work manners about the cad software sustaining the draw die design. the theory and realization about the cad function are also discussed. to realize the target of raising the quality and the efficiency of the die design the theory of the stpart & feature library on the basis of “ unigraphics ” which has the function of establishing the characterized 3d parametric solid model has been developed
論文依據unigraphics系統有關模塊和功能，探討了cad軟體支持模具設計過程的工作方式，研究相應輔助設計功能的原理和實現方法;結合系統開發平臺的功能，為實現提高模具設計質量、設計效率的目標，在基於特徵的三維參數化實體造型系統unigraphics上開發了
拉延模標準件庫及特徵庫。
Following studies are included in the thesis : 1. the developing platform is chosen based on the analysis the design procedure and work contents about the draw die design. illustrating the design procedure and flowchart of the die use the function of the system platform
論文主要完成了以下工作: 1 ）分析了汽車
拉延模的設計過程及工作內容，選擇了系統的開發平臺，並結合系統平臺的功能給出了模具的設計過程及工作方式，在此基礎上設計了系統的總體結構及功能模塊，建立起系統的總體框架。
This paper takes advantage of numeric simulation technology to investigate the weld - line movement and formability of twb with the same property and different thickness, analyzes the weld - line movement in three different drawing ways with the same drawing depth, and shows the normal rule of weld - line movement in different drawing ways, and the relationship between the weld - line movement and formability of twb of different thickness
摘要本文利用數值模擬技術對相同材質差厚拼焊板的沖壓成形性和焊縫移動進行研究，分析了相同拉延深度、不同拉延方式下焊縫移動情況，揭示了不同拉延方式下焊縫移動的一般規律和焊縫移動量與差厚拼焊板成形性之間的關系。
