靜態(tài)和動(dòng)態(tài)扭矩

Staticvs.DynamicTorque靜態(tài)和動(dòng)態(tài)扭矩DynamicTorque動(dòng)態(tài)扭矩DynamictorqueistheacceptedStrategyforfasteninginGeneralMotors.ThismethodisusedbytheBoschelectricwrehchesinPowertrainAssembly動(dòng)態(tài)扭矩是通用汽車公司認(rèn)可的擰緊方式動(dòng)力總成裝配線上B^Bosch電動(dòng)扳手就是使用這個(gè)方法StaticTorque靜態(tài)扭矩StaticTorqueisthemethodusedwhenaboltisrecheckedwithamanualtorquewrench.StaticTorqueisnottheacceptedmethodforfasteninginGeneralMotors當(dāng)用手動(dòng)扳手重新檢測(cè)螺栓時(shí)，則采用靜態(tài)扭矩，靜態(tài)扭矩不是通用汽車公司認(rèn)可的擰緊方式。StaticvsDynamicTorque靜態(tài)和動(dòng)態(tài)扭矩的比較Dynamictorqueismuchmoreaccurateandrepeatablethenstatictorque.Thereisnormallyadifferencebetweendynamictorquereadingsandstatictorquerechecks.Thedifferencedependonthecharacteristicsofeachjointandeachbolt.Factorscontributingtothisdifferenceinclude動(dòng)態(tài)扭矩比靜態(tài)扭矩更加準(zhǔn)確重復(fù)性更強(qiáng)。動(dòng)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(diǎn)，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(diǎn)襯墊和密封圈Timeafterfastening擰緊的時(shí)間Conditionofthepart(haSiibeenrun?)工件的狀態(tài):是否已經(jīng)用過(guò)乃)DonotbealarmedbyadifferencebetweenthedynamictorqueandastatiCrecheck.Thisisanormalcondition若發(fā)現(xiàn)動(dòng)態(tài)扭矩和靜態(tài)重檢扭矩讀數(shù)不同，請(qǐng)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(dòng)態(tài)扭矩準(zhǔn)確而且還會(huì)損壞好的粘結(jié)點(diǎn)，所以對(duì)合格工件進(jìn)行重新檢測(cè)不是一個(gè)好方法靜態(tài)重檢應(yīng)只限于工件返修工件故障分析或工件拆卸檢查.不要對(duì)好的發(fā)動(dòng)機(jī)或變速箱進(jìn)行靜態(tài)檢查.Adatabaseofstaticvsdynamicvalueswillbedevelopedaspartofthe

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