靜態(tài)和動(dòng)態(tài)扭矩(共4頁(yè))

1、精選優(yōu)質(zhì)文檔-傾情為你奉上Static vsDynamicTorque靜態(tài)和動(dòng)態(tài)扭矩Dynamic Torque 動(dòng)態(tài)扭矩:Dynamic torque is the accepted Strategy for fastening in General Motors.Thismethod is used by the Bosch electric wrehches in Powertrain Assembly動(dòng)態(tài)扭矩是通用汽車公司認(rèn)可的擰緊方式。動(dòng)力總成裝配線上的Bosch電動(dòng)扳手就是使用這個(gè)方法.Static Torque靜態(tài)扭矩:Static Torque is the method us

2、ed when a bolt is rechecked with a manual torquewrench.Static Torque is not the accepted method for fastening in General Motors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。Static vsDynamicTorque 靜態(tài)和動(dòng)態(tài)扭矩的比較:Dynamic torque is much more accurate and repeatable then static torque.Thereis normally a differe

3、nce between dynamic torque readings and static torquerechecksThe difference depend on the characteristics of each joint and eachboltFactors contributing to this difference include：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： 1Soft joints(gaskets and sealers) 軟性

4、粘結(jié)點(diǎn)(襯墊和密封圈)2Time after fastening 擰緊的時(shí)間3. Condition of the part(haS ii been run?) 工件的狀態(tài)(是否已經(jīng)用過了?)Do not be alarmed by a difference between the dynamic torque and a statiCrecheckThis is a normal condition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Since a static recheck is less accurate than the original dynamic to

5、rque and therecheck disturbs the good joint，it is not a good practice to recheck good partSStatic rechecks should only be used during repairs，rejected parts analysis or aspart of a teardown auditDO not statically recheck good engines or transmissions.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

6、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A database of static vsdynamic values will be developed as part of the teardown audits by the quality department.This is the only reliable way to gathersufficient data to understand this problem通過工件拆卸檢查，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題扭矩槍緊固螺釘通過傳感器顯示的動(dòng)態(tài)扭矩，而你用扭力板手檢測(cè)其松動(dòng)扭矩，這個(gè)時(shí)候你是檢測(cè)其靜態(tài)扭矩，