在机械装配过程中,经常把铜套镶入孔座,铜套对孔座一般为过盈配合。在常温下,铜套压入或打入孔座时,铜套内孔要收缩。为保证收缩后的铜套与轴的配合间隙,一般采用铜套内孔留加工余量,镶入后再进行镗削加工;无法镗削的就用手上刮研,费时费力,工效不高。 In the mechanical assembly process, the copper sleeve often set into the hole seat, copper sleeve hole seat is generally interference fit. At room temperature, copper sleeve pressed into or into the hole seat, copper sleeve hole to shrink. In order to ensure the contraction of the copper sleeve and the shaft with the gap, the general use of copper sleeve to keep the remaining hole processing, set in after boring processing; can not boring on the hand scraping, time-consuming and labor-intensive, inefficient .