箱(xiang)體鑄(zhu)件的主要(yao)(yao)技(ji)術要(yao)(yao)求，箱(xiang)體鑄(zhu)件中以機床(chuang)主軸箱(xiang)的精度要(yao)(yao)求高。

以(yi)某車床主(zhu)軸箱，箱體(ti)鑄件(jian)的技術要求主(zhu)要可歸(gui)納如(ru)下：

1.主(zhu)要(yao)(yao)平面(mian)(mian)(mian)(mian)(mian)(mian)的(de)(de)形狀精(jing)度(du)和(he)表(biao)(biao)面(mian)(mian)(mian)(mian)(mian)(mian)粗糙(cao) 度(du)，箱體(ti)(ti)鑄(zhu)件(jian)的(de)(de)主(zhu)要(yao)(yao)平面(mian)(mian)(mian)(mian)(mian)(mian)是(shi)裝配基準(zhun)，并且往往是(shi)加工時(shi)(shi)的(de)(de)定位(wei)(wei)(wei)基準(zhun)，所以，應有較高(gao)的(de)(de)平面(mian)(mian)(mian)(mian)(mian)(mian)度(du)和(he)較小的(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian)(mian)(mian)粗糙(cao)度(du)值，否則，直接影響箱體(ti)(ti)鑄(zhu)件(jian)加工時(shi)(shi)的(de)(de)定位(wei)(wei)(wei)精(jing) 度(du)，影響箱體(ti)(ti)與機座(zuo)總裝時(shi)(shi)的(de)(de)接觸(chu)剛度(du)和(he)相互位(wei)(wei)(wei)置精(jing)度(du)。一般箱體(ti)(ti)鑄(zhu)件(jian)主(zhu)要(yao)(yao)平面(mian)(mian)(mian)(mian)(mian)(mian)的(de)(de)平面(mian)(mian)(mian)(mian)(mian)(mian)度(du)在0.10.03mm，表(biao)(biao)面(mian)(mian)(mian)(mian)(mian)(mian)粗糙(cao)度(du)Ra2.50.63m，各(ge)主(zhu)要(yao)(yao)平面(mian)(mian)(mian)(mian)(mian)(mian)對(dui) 裝配基準(zhun)面(mian)(mian)(mian)(mian)(mian)(mian)垂直度(du)為0.1/300。

2.孔的(de)尺寸精度(du)(du)(du)、幾何形狀精度(du)(du)(du)和表面粗糙(cao)度(du)(du)(du)，箱體鑄件上的(de)軸(zhou)承(cheng)支承(cheng)孔本身的(de)尺寸精度(du)(du)(du)、形狀精度(du)(du)(du)和表面粗糙(cao)度(du)(du)(du)都要求(qiu)較(jiao) 高，否則，將影響軸(zhou)承(cheng)與箱體。