靜態(tài)和動態(tài)扭矩

Staticvs.DynamicTorque靜態(tài)和動態(tài)扭矩DynamicTorque動態(tài)扭矩DynamictorqueistheacceptedStrategyforfasteninginGeneralMotors.ThismethodisusedbytheBoschelectricwrehchesinPowertrainAssembly動態(tài)扭矩是通用汽車公司認可的擰緊方式動力總成裝配線上B^Bosch電動扳手就是使用這個方法StaticTorque靜態(tài)扭矩StaticTorqueisthemethodusedwhenaboltisrecheckedwithamanualtorquewrench.StaticTorqueisnottheacceptedmethodforfasteninginGeneralMotors當用手動扳手重新檢測螺栓時，則采用靜態(tài)扭矩，靜態(tài)扭矩不是通用汽車公司認可的擰緊方式。StaticvsDynamicTorque靜態(tài)和動態(tài)扭矩的比較Dynamictorqueismuchmoreaccurateandrepeatablethenstatictorque.Thereisnormallyadifferencebetweendynamictorquereadingsandstatictorquerechecks.Thedifferencedependonthecharacteristicsofeachjointandeachbolt.Factorscontributingtothisdifferenceinclude動態(tài)扭矩比靜態(tài)扭矩更加準確重復性更強。動態(tài)扭矩的讀數(shù)與重檢靜態(tài)扭矩的讀數(shù)通常是不相同的.而且不同的粘結(jié)點，不同的螺栓，差別程度又有所不同。造成讀數(shù)差異的主要因素包括：Softjoints(gasketsandsealers)軟性粘結(jié)/點襯墊和密封圈Timeafterfastening擰緊的時間Conditionofthepart(haSiibeenrun?)工件的狀態(tài):是否已經(jīng)用過乃)DonotbealarmedbyadifferencebetweenthedynamictorqueandastatiCrecheck.Thisisanormalcondition若發(fā)現(xiàn)動態(tài)扭矩和靜態(tài)重檢扭矩讀數(shù)不同，請不要緊張.這是正?，F(xiàn)象.Sinceastaticrecheckislessaccuratethantheoriginaldynamictorqueandtherecheckdisturbsthegoodjoin，titisnotagoodpracticetorecheckgoodpar.tSStaticrechecksshouldonlybeusedduringrepa，irsrejectedpartsanalysisoraspartofateardownauditDOnotstaticallyrecheckgoodenginesortransmissions.由于靜態(tài)重檢不如原先的動態(tài)扭矩準確而且還會損壞好的粘結(jié)點，所以對合格工件進行重新檢測不是一個好方法靜態(tài)重檢應只限于工件返修工件故障分析或工件拆卸檢查.不要對好的發(fā)動機或變速箱進行靜態(tài)檢查.Adatabaseofstaticvsdynamicvalueswillbedevelopedaspartofthe

teardownauditsbythequalitydepartment.ThisistheonlyreliablewaytogathersufficientdatatounderstandthisproblemarryGallagherChrisSchaidtQuality通過工件拆卸檢查，質(zhì)量部將制定一張靜態(tài)和動態(tài)數(shù)值對比表這是唯一一個較為可靠的數(shù)據(jù)收集方法，能幫助我們更好地理解問題.arryGallagherChrisSchaidtQualityPlanningEngineeringSteveIvesEngineProductEngineering發(fā)動機產(chǎn)昌工程規(guī)劃工程SteveIvesEngineProductEngineering發(fā)動機產(chǎn)昌工程EdHanTransmissionProductEngineering變速蒞產(chǎn)品工程扭矩槍緊固螺釘通過傳感器顯示的動態(tài)扭肺你用扭力板手檢測其