冷镦工艺介绍-国外资料翻译*ppt课件ContentsoftheTraining培训内容AssemblyandsetupofCOD&COK剪刀/剪模组立Assemblyandsetupofmaindies主模组立Assemblyandsetupofpunches冲头组立/失效分析Understandsteel&carbidetools模具组立/材料/钨钢Understandtoolsurface&friction模具表面/摩擦系数Understandtheeffectofpreform预成形分析10Jan2011*ppt课件AssemblyandsetupofCOD&COK剪刀/剪模组立*ppt课件AssemblyandsetupofCOD&COK1 pleteCOD全剪COK:CutOffKnife剪刀COD:CutOffDie剪体*ppt课件AssemblyandsetupofCOD&COKBasicMechanismofShearing剪切基础知识WhatHappenDuringShearing:-剪切过程产生:ElasticDeformation弹性变形Roll-over曲面Plasticshear塑性剪切InitialFracture初始断裂FinalFracture最终断裂PhysicalSeparation实际剪断*ppt课件AssemblyandsetupofCOD&COK2 BasicMechanismofShearingQualityProblems:-质量问题OvalShape椭圆形Tilting歪斜Poorshear剪切面粗糙Burr毛刺NotStraight不直ClearanceTooBig间隙太大OptimumClearance最佳间隙ClearanceTooSmall间隙太小ElasticDeformation弹性变形Roll-over曲面Plasticshear塑性剪切InitialFracture初始断裂FinalFracture最终断裂PhysicalSeparation实际剪断*ppt课件AssemblyandsetupofCOD&COK2 BasicMechanismofShearing(HalfCutCOK)半剪NoControlofBlank 落料无法控制DifferentShearPatterns 剪切方式不同BlankNotStraight 线材不直BigRoll-over 曲面较大LowCost 成本低廉EasytoSetup 安装简易LongToolLife 模具寿命较长*ppt课件AssemblyandsetupofCOD&COK2 BasicMechanismofShearingNeedReliefSurfaces 需要表面退让(退剪槽〕CarefulControlofClearance 间隙要求高DifficultCOK/CODAlignment 剪刀、剪体对齐困难BetterShear/Quality 较好的剪切质量AchieveStraightBlank 剪断的线材较直SmallRoll-over pleteCut全剪)*ppt课件AssemblyandsetupofCOD&monBlankQualityIssue 常见的线材剪切质量问题Roll-over 曲面Plasticshear 塑性剪切SecondaryFracture/Tongue 二次断裂/舌状毛刺Burr 毛刺Straightness 直线性1443234*ppt课件AssemblyandsetupofCOD&COK4 COD&COKSetting 安装Relief表面退让(退剪槽〕SmallRadius小圆角Relief表面退让(退剪槽〕*ppt课件
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