汽車的(de)車門下部外飾板(ban)是通過卡扣與鈑金件(jian)卡接在一(yi)起,外飾板(ban)的(de)邊緣位置與鈑金貼合,通過雙面膠(jiao)粘接固定。
1、汽(qi)(qi)車(che)覆蓋件(簡稱覆蓋件)是(shi)指構成(cheng)汽(qi)(qi)車(che)車(che)身或駕駛室、覆蓋發動(dong)機(ji)和(he)底盤的異形體表(biao)面和(he)內部的汽(qi)(qi)車(che)零件。汽(qi)(qi)車(che)覆蓋件既是(shi)外(wai)觀裝飾性的零件,又是(shi)封(feng)閉薄殼狀(zhuang)的受力(li)零件;
2、覆(fu)蓋(gai)件(jian)表面上任何微小的(de)缺陷(xian)都會在涂漆后(hou)引(yin)起光(guang)線(xian)的(de)漫反射而(er)損壞(huai)外形的(de)美(mei)觀,因此(ci)覆(fu)蓋(gai)件(jian)表面不(bu)允許有波紋、皺折、邊(bian)緣(yuan)拉痕和其他破壞(huai)表面美(mei)感的(de)缺陷(xian)。歐、美(mei)、日等(deng)發達國家生(sheng)產的(de)A級表面精度的(de)汽車覆(fu)蓋(gai)件(jian)有引(yin)擎蓋(gai)板(ban);
3、車頂(ding)蓋(gai)(gai)(gai),左(zuo)、右(you)車側(ce)圍(wei),前(qian)(qian)(qian)(qian)(qian)、后車門,前(qian)(qian)(qian)(qian)(qian)、后、左(zuo)、右(you)翼(yi)子板(ban)(ban)(ban),行(xing)禮箱蓋(gai)(gai)(gai)板(ban)(ban)(ban),發動(dong)(dong)機(ji)前(qian)(qian)(qian)(qian)(qian)支撐板(ban)(ban)(ban),發動(dong)(dong)機(ji)前(qian)(qian)(qian)(qian)(qian)裙板(ban)(ban)(ban),前(qian)(qian)(qian)(qian)(qian)圍(wei)上(shang)蓋(gai)(gai)(gai)板(ban)(ban)(ban),后圍(wei)板(ban)(ban)(ban),后圍(wei)上(shang)蓋(gai)(gai)(gai)板(ban)(ban)(ban),前(qian)(qian)(qian)(qian)(qian)裙板(ban)(ban)(ban),前(qian)(qian)(qian)(qian)(qian)框架,前(qian)(qian)(qian)(qian)(qian)翼(yi)子板(ban)(ban)(ban),車輪擋泥板(ban)(ban)(ban)、后翼(yi)子板(ban)(ban)(ban)、后圍(wei)板(ban)(ban)(ban)、行(xing)李倉蓋(gai)(gai)(gai),后圍(wei)上(shang)蓋(gai)(gai)(gai)板(ban)(ban)(ban)、頂(ding)蓋(gai)(gai)(gai)、前(qian)(qian)(qian)(qian)(qian)圍(wei)側(ce)板(ban)(ban)(ban)、前(qian)(qian)(qian)(qian)(qian)圍(wei)板(ban)(ban)(ban)、前(qian)(qian)(qian)(qian)(qian)圍(wei)上(shang)蓋(gai)(gai)(gai)板(ban)(ban)(ban)、前(qian)(qian)(qian)(qian)(qian)擋泥板(ban)(ban)(ban)、發動(dong)(dong)機(ji)罩。覆蓋(gai)(gai)(gai)件的制(zhi)造是汽車車身制(zhi)造的關鍵環(huan)節(jie)。
前圍(wei)板(ban)是(shi)指發動(dong)機艙(cang)與車廂(xiang)之間(jian)的(de)(de)隔(ge)板(ban),它(ta)和地板(ban)、前立柱聯接,安(an)裝在前圍(wei)上蓋板(ban)之下(xia)。前圍(wei)板(ban)上有許(xu)多(duo)孔(kong)口,作(zuo)為操縱(zong)用的(de)(de)拉線、拉桿、管路(lu)和電(dian)線束通過之用,還要配(pei)合踏板(ban)、方向機柱等機件安(an)裝位置。為防止發動(dong)機艙(cang)里的(de)(de)廢氣、高溫、噪聲竄入車廂(xiang),前圍(wei)板(ban)上要有密(mi)封(feng)措施(shi)和隔(ge)熱裝置。在發生意外事故時,它(ta)應具(ju)有足夠的(de)(de)強(qiang)度(du)和剛度(du)。對比車身其它(ta)部(bu)件而言(yan),前圍(wei)板(ban)裝配(pei)最重要的(de)(de)工藝技(ji)術是(shi)密(mi)封(feng)和隔(ge)熱,它(ta)的(de)(de)優劣往(wang)往(wang)反(fan)映(ying)了(le)車輛運(yun)行的(de)(de)質量。
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