各种机械在生产、维修中或多或少使用要铜套或钢套。套对座孔一般为过盈配合,在常温下压入,但套内孔将收缩,为保证套与轴的动配合间隙,常采用两种办法来解决:一种是套内孔留余量,将套压入座孔后,再加工内孔;另一种是将套直接加工成成品直接压入;后者工艺简单、成本低。但必须考虑套的收缩量,必须加大套的内孔径,才能保证套与轴的配合 A variety of machinery in the production and maintenance of more or less to use brass or steel sleeve. Opposite seat hole is generally interference fit, pressed at room temperature, but the sleeve will shrink hole, in order to ensure the sleeve and the shaft with the gap, often using two ways to solve: one is the set of holes remaining , The nesting into the seat hole, and then processing the hole; the other is the sleeve directly into finished products directly into; the latter is simple, low cost. But must consider the shrinkage of the sleeve, must increase the inner diameter of the sleeve, in order to ensure the sleeve with the shaft