由于机床主轴轴承青铜轴瓦的磨损,使轴瓦孔径变成不正确的形状,心轴助开始磨坏。因此机床的加工质量降低,必须进行修理。 修理是先拆开心轴的接合件,然後把轴瓦拉紧,以减小它的内径,同时进行重镗并对内孔面加以刮研。 但是,经过几次修理後,轴瓦就不能再继续拉紧了,原因是内孔的 Due to the wear of the spindle bearing bronze bush, the bush bore becomes an incorrect shape, and the spindle starts to wear out. Therefore, the quality of machine tools to reduce, must be repaired. Repair is the first to open the mandrel joint, and then tighten the bush to reduce its diameter, while heavy boring and scraping the inner surface of the hole. However, after several repairs, the bearing bush can no longer be tightened, because of the bore