刮(gua)研鏟刮(gua)從兩百年前工業革命流傳下來，是(shi)機器(qi)無法取代的(de)金屬加工手藝。刮(gua)研是(shi)機械兩個(ge)移(yi)動貼合面鏟直、鏟平、鏟均勻，數控(kong)軌道滑動時刮(gua)研構成的(de)點線面幫助機械精準移(yi)動，也讓(rang)潤滑油發揮中介功能，避免提早磨耗(hao)，降(jiang)低機械壽命，就(jiu)像高度(du)一樣的(de)十(shi)個(ge)人(ren)(ren)撐著門板可平均分(fen)攤重量，如果(guo)有人(ren)(ren)蹲下來沒承受力量，其(qi)他人(ren)(ren)因重量集(ji)中比較(jiao)累……

     刮(gua)研(yan)鏟刮(gua)是利(li)用(yong)刮(gua)刀、基準表面(mian)、測(ce)量工(gong)(gong)(gong)(gong)(gong)具和(he)顯示劑，以手工(gong)(gong)(gong)(gong)(gong)操作的(de)(de)方式，邊研(yan)點邊測(ce)量，邊刮(gua)研(yan)加(jia)工(gong)(gong)(gong)(gong)(gong)，使工(gong)(gong)(gong)(gong)(gong)件達到(dao)工(gong)(gong)(gong)(gong)(gong)藝上規定的(de)(de)尺(chi)寸、幾何形狀、表面(mian)粗(cu)糙度(du)(du)和(he)密合性等(deng)要(yao)求的(de)(de)一項精加(jia)工(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)序。由(you)于(yu)使用(yong)的(de)(de)工(gong)(gong)(gong)(gong)(gong)具簡單，通用(yong)性比較強，加(jia)工(gong)(gong)(gong)(gong)(gong)余量少(shao)，而達到(dao)的(de)(de)精度(du)(du)非(fei)常(chang)高，因此廣泛地應(ying)用(yong)在機(ji)器和(he)工(gong)(gong)(gong)(gong)(gong)具的(de)(de)制(zhi)造及機(ji)械設備的(de)(de)修理工(gong)(gong)(gong)(gong)(gong)作中。通常(chang)機(ji)床的(de)(de)導軌、拖板(ban)，滑動軸承(cheng)的(de)(de)軸瓦都(dou)是用(yong)刮(gua)研(yan)的(de)(de)方法(fa)作精加(jia)工(gong)(gong)(gong)(gong)(gong)而成的(de)(de)。

     平面(mian)(mian)(mian)刮研(yan)(yan)鏟(chan)刮的(de)質量(liang)有兩個指(zhi)標。一個是(shi)(shi)幾何形狀(zhuang)，如垂直度(du)、平面(mian)(mian)(mian)度(du)和厚度(du)尺(chi)寸。另一個指(zhi)標是(shi)(shi)表(biao)(biao)面(mian)(mian)(mian)質量(liang)，表(biao)(biao)面(mian)(mian)(mian)質量(liang)常用研(yan)(yan)點法(fa)(fa)，用標準平板(ban)或(huo)與其相配合的(de)零件對刮研(yan)(yan)面(mian)(mian)(mian)進行研(yan)(yan)點。方法(fa)(fa)是(shi)(shi)使用25×25mm方框，放在被檢表(biao)(biao)面(mian)(mian)(mian)，檢查方框內的(de)點數(shu)。