拉延成形模 的英文怎麼說
中文拼音 [lāyánchéngxíngmó]
拉延成形模
英文
drawing and shaping die-
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。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。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。A new concept, essential technical design ( etd ) for automobile stretching part which provides succeeding fem simulation with initial conditions, its necessity and characteristics are presented
提出了要領設計的新概念，即通過該環節為汽車覆蓋拉延件成形的有限元模擬提供初始條件，分析了要領設計的必要性和特點。In this thesis it was proposed to simulate the drawing, trimming, flanging by using error - adjustment method. the initial trimming lines would be adjusted and optimized in the computer by adjusting error. if the shape error between the flanging boundary line and the target is larger than prescribed, the redundant area is subtracted from the initial blank by some amount of volume along the deformation path, and the insufficient volumes are added to the initial blank by the same amount
本文提出，利用基於變形路徑的誤差修正法（ error - adjustment ） ，結合cae技術將對初始修邊線的調試過程在計算機中進行模擬（包括拉延、修邊、翻邊、整形等）計算，通過控制翻邊后零件成型邊界與實際目標輪廓之間的尺寸誤差來優化修邊線，如果初始切邊、翻邊后的輪廓與目標體的邊界存在較大偏差，則初始切邊輪廓中多餘部分單元將沿其變形路徑以相同體積量被切除，不足部分則沿其變形路徑以相同體積進行補償。So how to determine the trimming shape and dimension for exact flanging is very important for reducing the period of producing trimming mould and saving the cost. simultaneously it is a difficult problem in whole mould manufacture. several common methods of calculating the cutting contour were discussed in this thesis
拉延後如何確定修邊線的尺寸和形狀，使翻邊后突緣輪廓正好達到零件所需翻邊高度，對于縮短模具製造周期，減少生產成本都具有重要意義，同時也是整個模具行業亟待解決的一大難題。分享友人