压铸模流道与浇口设计.ppt
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- 上传时间:2022-11-09
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压铸模流道与浇口设计.ppt
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CastecCastecAUSTRALIAAUSTRALIA流道與澆口設計系統DesigningRunnerandGatingSystemsT.H.SiauwCastecAustraliaPty.Ltd.CastecCastecAUSTRALIAAUSTRALIA產品背景Productbackgroundu經過CSIRO的15年研發uOver15yearsR&DbyCSIROu在MS-WINDOWS環境下操作uOperateunderMS-WINDOWSu由CASTEC作全球性行銷uMarketedworldwidebyCastecAustraliaCastecCastecAUSTRALIAAUSTRALIA模具設計的特性DieDesignFeatures機械特性:
模具分佈&各部界面Mechanicalfeatures:
dielayout&partingface流動特性:
流道&澆口Fluidflowfeatures:
runnerandgate熱流特性:
冷卻&加熱Thermalfeatures:
cooling&heatingCastecCastecAUSTRALIAAUSTRALIA模具設計電腦輔助工具Computer-Aideddiedesigntools機械性:
Autocad,UnigraphicsMechanicalfeatures:
Autocad,Unigraphics流動特性:
CASTFLOWFluidflowfeatures:
CASTFLOW熱流特性:
CASTHERMThermalfeatures:
CASTHERMCastecCastecAUSTRALIAAUSTRALIA模具設計之整合IntegratedDieDesign模具設計模具設計DieDesign流道設計流道設計:
CASTFLOWRunnerDesign冷卻冷卻&加熱加熱Cooling/HeatingCASTHERMNC加工加工NCMachiningIGESCastecCastecAUSTRALIAAUSTRALIA課程主題Topicsu流道&澆口設計之流程uRunnerandgatingdesignproceduresu充填模式分析uFillpatternanalysisu電腦軟體CASTFLOWuCASTFLOWuCasestudiesuCasestudiesCastecCastecAUSTRALIAAUSTRALIA問題在哪?
Theproblem?
CastecCastecAUSTRALIAAUSTRALIA流道&澆口設計之流程RunnerandGatingDesignProceduresu大姆指法則-經驗公式uRuleofthumb-experiencebasedu充填時間法則uFilltimebasedu充填模式法則uFillpatternbasedCastecCastecAUSTRALIAAUSTRALIA充填時間法則之流程Filltimebasedprocedureu決定充填時間(=t)uDeterminethecavityfilltime(=t)u計算鑄件體積(=V)uCalculatethecastingvolume(=V)u計算金屬熔液湯流率(F=V/t)uCalculatemetalflowrate(F=V/t)u指定澆口速度(u40m/s)uAssigngatespeed(u40m/s)u澆口面積(A=F/u)uGatearea(A=F/u)CastecCastecAUSTRALIAAUSTRALIA計算澆口面積Calculatethegatearea1501001?
CastecCastecAUSTRALIAAUSTRALIA充填時間法則之缺點WeaknessesofFillTimebasedapproach:
u最佳充填時間無法肯定uOptimumcavityfilltimeisunknownu流道形狀的影響並未考慮uTheeffectofrunnergeometryisnottakenintoaccountu模穴充填距離並未考慮,故澆口位置只能純憑經驗.uTheflowdistanceincavityisnottakenintoaccount.Thus,gatepositionmustbedecidedpurelybyexperienceu鑄件形狀並未考慮uCastingshapeisnottakenintoaccountCastecCastecAUSTRALIAAUSTRALIA充填模式法(FillPatternbasedapproach)決定充填模式Definefillpattern設計流道&澆口Designrunner&gate充填模式達到?
Fillpatternachieved?
分析(Analyze)OK?
NoNoYesCastecCastecAUSTRALIAAUSTRALIA什麼是“充填模式”?
Whatisfillpattern?
CastecCastecAUSTRALIAAUSTRALIA怎樣才是好的充填模式?
Whatisagoodfillpattern?
應避免鎂湯在模穴中旋轉形成旋渦而包夾空氣AvoidmetalswirlingincavityformingvorticeswhichtrapairCastecCastecAUSTRALIAAUSTRALIACastecCastecAUSTRALIAAUSTRALIA怎樣才是好的充填模式?
Whatisagoodfillpattern?
避免兩道或多道金屬流在模穴中會合而包夾空氣Avoidtwoormoremetalfrontsmeetingincavitywhichtrapair包夾空氣AirtrapCastecCastecAUSTRALIAAUSTRALIACastecCastecAUSTRALIAAUSTRALIAGoodFillPattern?
AvoidsmetalfrontsmeetingincavityCastecCastecAUSTRALIAAUSTRALIACastecCastecAUSTRALIAAUSTRALIACastecCastecAUSTRALIAAUSTRALIA怎樣才是好的充填模式?
Whatisagoodfillpattern?
某些特殊形狀的鑄件會影響金屬流動與引起金屬在模穴中會合Somegeometricalfeaturesincastingmayinterruptflowandcausemetalfrontsmeetincavity包夾空氣airtrap空洞CutoutCastecCastecAUSTRALIAAUSTRALIA決定充填模式後,下一步是.Afterdefiningfillpatternthenextis.決定充填模式Definefillpattern設計流道&澆口Designrunner&gate分析AnalyzeOK?
NoNoYes充填模式達到?
Fillpatternachieved?
CastecCastecAUSTRALIAAUSTRALIA哪一種流道形狀好?
Whichrunnergeometry?
扇形開口Fan/ChiselGate錐形流道TaperedrunnerCastecCastecAUSTRALIAAUSTRALIA請試描出下面兩種澆口的射出方向?
Exerciseshowthelikelyflowdirectionasthemetalflowsoutofthegate扇形開口Fan/ChiselGate錐形流道TaperedrunnerCastecCastecAUSTRALIAAUSTRALIA任何問題?
Anyquestions?
CastecCastecAUSTRALIAAUSTRALIA先休息一下?
Letushaveabreak
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- 关 键 词:
- 压铸 模流道 浇口 设计
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