鼠标4D分析报告.ppt

XTD中心輪下壓功能串鍵分析報告Pressingthescrollwheelbuttonisalsotriggeredthetiltfunctiontotheleftissueanalysisreport 不良現象 中心輪下壓功能串鍵Failphenomena unbalancedwheelcausingfor17unitstoaccidentlypressleft righttilttooeasily PreparedbyPE 封陽勝2012年8月15日 Computer PowerDivision AnalysisReport August2012 Computer PowerDivision XTD下蓋組裝主要參數值及來料測量數據 以下為3D示意圖 以下參考數據發現只有主板PCB厚度為上限值 影響到中心論下壓功能串鍵 有對開關造成預壓 會使問題出現 ThemainparametersvalueandtheincomingmeasureddatatheXTDbottomcoverassembly referasbelowdrawing Fromasdata themainPCBthicknessclosetospecupperlimittoimpactthewheelunderthepressurefunctionstringkey switchpreloadwillmaketheproblemappear Bottomofthelowercovertoswitch theheightofcombinationofdesignvalue 5 50 1 60 5 70 12 80mmBottomofthelowercovertoswitchofincomingpart combinationofthemeasuredmaximumvalue 5 55 1 70 5 70 12 95mm Measurement10pcsaverageis12 90mm calculatethevaluefromthepointofviewSwitchhasbeenpreloading whenthewheelundertheheavypressurecausestringkey AnalysisReport August2012 Computer PowerDivision Thecenterwheelunderpressurefunctionstring RootCauseAnalysis 中心輪下压功能串键原因分析 拆10PCS不良機子下來分析測量中心輪支架 主要尺寸數據都在設計規格公差 沒有發現不良尺寸 AY主板實測厚度時發現尺寸大多數都是偏上限 1 66 1 70mm使中心輪支架左右擺觸點預壓Switch導致下壓功能串鍵 PCB規格為1 60 0 10mm 以往X3主板厚度一般在1 59 1 64mm Demolition10PCSfailXTDunitstoanalysis measurethewheelcover themaindimensionsofdatainthedesignspec tolerancebut mainPCBactualthicknessareclosetospecupperlimits 1 66 1 70mmmakewheelcoverL Rcontactpointpreloadswitchcausepressuremiddlebuttonfunctionstringkey MainPCBspecificationis1 60 0 10mm 一 PCB板來料尺寸厚度偏大 實測10pcs就有8pcs板厚在1 66 1 70mm IncomingmainPCBthicknessistooclosetotheupperlimits Measured10pcsthereare8pcsPCBthicknessin1 66 1 70mm 实测1 68mm 最大尺寸有测到1 70mmMeasuredPCBthicknessis1 68mmMeasuredmaximumvalueis1 7mm AnalysisReport August2012 Computer PowerDivision 二 中心轮支架重要尺寸实测10pcs在尺寸规格内 如下示图 Measuredkeydimensionofwheelcoverq ty 10pcswasindesignspec 支架觸點高度實測3 12 3 15mmmeasuredheightofwheelcovercontactpoint 前端定位軸直徑2 45 0 0 0 05mmFront endpositioningaxisdiameteris2 45 0 0 0 05mm 中心支架左右擺點高度規格為3 10 0 05 0 0mmL Rcontactpointofwheelcoverdesignspecis3 10 0 05 0 0mm AnalysisReport August2012 Computer PowerDivision 目前給產線臨時對策 Reworksolutionforproductionline 用冶具加工中心輪支架左右擺觸點高度壓短到2 92mm 3 04mm 如下示意图 UsingfixturedepresstheheightofwheelcoverL Rcontactpointto2 92mm 3 04mm 用冶具加工触点压到3 00mmUsingfixturedepresstheheightofwheelcoverL Rcontactpoint 支架触点须要冶具加工 WheelcoverL Rcontactpoint AnalysisReport August2012 Computer PowerDivision Conclusion MainPCBincomingpartthicknessaretooclosetothespecupperlimits 1 66 1 70mmraisethewheelL RswitchmountingonPCB causethewheelcoverL Rcontactpointpreloadswitch stringkeywhenpressmiddlebuttonfunction PreviousincomingmainPCBpartthicknessaround1 59 1 64mm Assemblytestsdidnotrevealpressscrollwheelbuttonisalsotriggeredthetiltfunctiontotheleft stringkey issue UsingfixturedepresstheheightofwheelcoverL Rcontactpointto2 92mm 3 04mm SolutiontoreworkXTD10PCSfailunits Pressingthescrollwheelbuttonisalsotrigge