逆向工程摡论

李冠宗、李宗保老師製作逆向工程摡論逆向工程摡論

*一、製造科技研發設計流程CAD/CAM/CNC/CT-SCAN/RE/RP/RT/REPLICA的製作流程。*二、逆向工程製造流程範例介紹(Miki-mouse)。*三、應用於醫學的研究與推廣。貳﹑iges

、stl

轉換。參﹑RP支撐建構。 肆﹑RP成品精度控制。新世紀製造科技的產品開發技術方向：整合1:ANALOG(類比訊號軟體)2:DIGITAL(數位訊號軟體)3:CT-SCAN(電腦斷層掃瞄)4:REVERSEENGINEER(逆向工程)5:RAPIDPROTOTYPING(快速原型)6:RAPIDTOOLING(快速模具)7:QUICKCAST(快速鑄造)等技術，依據製造科技邏輯理論強化產品研發設計品質，縮短開發流程週期。逆向工程實作流程CAD/CT-SCAN/CAM/CNC/RP/RT/REPLICA/CAV/REPORT操作流程圖逆向工程應用為什麼需要逆向工程(EngineerReverse)1:產品設計走向自由造型。2:傳統量測點的數據疏鬆無法正確描述產品造型設計。3:非接觸式量測設備量測速度較快但資料量龐大。4:正向設計資料取得不易。5:檢驗正向設計結果。StereolithgrphyApparatus(SLA)RP製作1:CADusedCreate3Dsolidmodelsoftwarepreparesthe*.stlfilesforbuilding.2:*.stlfilebuildonstereolithographapparatus(SLA)machine.3:Photopolymermaterialsusedtoproduceprototypeormaterpattern.4:Secondarymaterialsandprocessesdelivertrueinjectionmoldedmaterials.Verdict檢測系統1:必須能讀取任何CAD資料2:能支援絕多數量測系統3:讀取的量測資料無點數限制4:可量測幾何公差(真圓度、真直度、圓柱度、同軸度)逆向工程學範例:米老鼠原型製作(RE/CAD/CAM/CNC/RT/RP)整合Miki-Mouse原型操作步驟1:曲面的建構步驟一:數位訊號輸入點群資料、過濾及選取2:曲面的建構步驟二:幾何曲面的建立◎曲面的分析與檢測3:曲面的建構步驟三:透過igs

輸出到類比訊號◎修飾曲面的平滑度並縫合曲面間隙◎做offset或shell轉為實體◎做公母模與RP件4:透過stl輸出到RP前處理軟體lighyear:◎做破洞縫補◎做物件支撐的建構◎刮板參數物件支撐的建構5:透過bff輸出到RP機器(buildstation)做SLA液態成型圖示範例點群資料igsfile圖示範例正面組裝件(工模、RP-原型、母模)圖示範例背面組裝件(工模、RP-原型、母模)CNC工模加工件RP-原型加工CNC加工件(三):應用於醫學的研究與推廣HandHand-boneHeadTeethigs

檔案處理1:歸劃構圖精度公差Accuracy2:確定軟體轉換精度deviationcontrolchordheight(binary)3:stitchigs破洞4:輸出igsfile5:轉換為stlfile專門確認修改透夠過igs

產生stl

檔案應用於快速原型機(RP)及快速模具(RT)。6:STLASCIIand

Binary檔案輸入。7:法線方向確認。8:補stl破洞。9:產生公母模自動長肉厚。10:面積體積之計算。RP製作於平台上工件支撐最佳化之探討

壹:Fan(風扇):工件and支撐---範例貳:支撐種類一:Braces補強支架結構。二:FlagSupports旗狀式結構。三:Gussets懸臂式結構。四:Scaffolds網格狀結構。五:SierrasandSeparators點接觸鋸齒狀結構。六:FinePoint網狀分岔結構。1:CustomDrawinterface手動編輯支撐。2:Interfaceregion網狀分岔結構--上下緣穿入深度。3:Projections網狀分岔結構-交叉網柱。4:Strand網狀分岔結構-支撐網柱。5:SupportAngle支撐的--角度參數。圖示範例Fan(風扇):工件and支撐Braces補強支架結構1:ThestabilizingstructuressupportgeneratorcreatesandattachestosupportscallBraces2:Theybuttressthesupportswheregeometriccharacteristicsindicatethatthesupportsmightbesusceptibletobreakingordistortingduringthebuildprocess.TriangularBraces三角補強支架結構1:TriangularBracebuttresstheframeworkofstrandsandprojectionstopreventitfromswayingorcollapsingduringtherecoatingprocessFlagSupports旗狀式結構1:ThisisareferencetoaspecializedtypeofGussetsupport.2:FlagsupportsarethealternativetoGussets.Flagareformedbyconstructingaverticalpolestructurefromthebuildplatformuptothebottom-mostvertexofthetriangularlaminathatmakesupwhatwouldotherwisebeaGusset.Sincethispoleispositionedincrementallyawayfromsidewalls,surfacefinishqualityisleftintact.Gussets懸臂式結構1:FinePointGussetsreplacethefunctionofGussetsintraditioncurtainsupport,Theycanbeinoverhangingareathataresignificantlyabovethebuildplatformorotherupfacingregionsinordertosavetimeandresin.2:TheydefaulttoOFFintheFRGfileScaffolds網格狀結構1:Scaffolds,Thesestructuresprovideadditionalstabilizationofcertaintypesofpartgeometryorsupport.SierrasandSeparators點接觸鋸齒狀結構1:Thetopandbottomedgesofcurtainsupportgeneratedareshapedtiny,two-dimensionalmountaintopswheretheyinterfacewiththepart.Thesemountaintops,callSierrasandSeparators.CustomDrawinterface手動編輯支撐1:AnybracesattachedtothecurrentlydisplayedregionarerepresentedaspinklinesegmentswithdiscernibleendpointsGussetsarerepresentedasgreenlinesegmentswithdiscernibleendpoints.2:Whenyouaddsupportstotheregion,theadditionisrepresentedasdashedline/polyline/rectangleuntilyoucompletetheactionreleasethemousebutton.Interfaceregion網狀分岔結構—

上下緣穿入深度1:TheInterfaceRegionscontainTopinterfaceregionandBottominterfaceregion.2:TheTopinterfaceregioniscomprisedoftheTopInterfaceIntersectandtheTopInterfaceExposedheight,whilethebottominterfaceregionisthesumoftheBottomInterfaceandtheBottomInterfaceExposedHeightProjections網狀分岔結構-交叉網柱1:ProjectionsaretheangularmembersoftheFinepointsupportstructurethatoriginateatonestrandandprojecttotheadjacentstrand.Theirpurposeistogivethesupportframeworkrigidity.Strand網狀分岔結構-支撐網柱1:StrandsaretheverticalnumbersoftheFinePointsupports.2:Therearetheonlysupportfeaturesthatactuallytouchthepart.Theirsolepurposeistoprovidesupportforthepartduringthebuildprocess.SupportAngle支撐的--角度參數1:SupportStyleallowsyoutoselecttheSRGorFRGfilewithwhichthesupportsarecreated.2:TheFRGfilecontainsparameters,whichdeterminehowFinePointsupportaregenerated,s