带保护片的轴承(通常称为密封式轴承)在机械制造业中获得日益广泛的应用,这自然是由于它不需要经常更换润滑油,寿命比较高,但在它的制造过程中也产生一些必须解决的问题。这个问题就是,用传统的方法,即将保护片卷边(见图1)和通过弹性锁环(见图2)来固定保护片的方法已不能满足现在使用者的要求。例如,将保护片卷边必然要在轴承外套上车槽,并对被削弱的轴承套施加很大的力,这就可能使轴承套变形。轴承越小,外套越薄,变形的可能性就越大。换言之,该法只适用于尺寸较大,且精度较低(6～0)的轴承。弹性锁环的方案也 Bearings with a protective sheet, often referred to as hermetically sealed bearings, are gaining more and more widespread use in the machinery industry because of the fact that they do not require frequent oil changes and have a longer life expectancy but also produce some during their manufacturing Must solve the problem. The problem with this is that the conventional method of fixing the protection sheet by curling the protection sheet (see FIG. 1) and by the elastic lock ring (see FIG. 2) can not satisfy the current user’s requirements. For example, crimping the protective sheet necessarily entails tightening the groove in the bearing jacket and exerts a great force on the weakened bearing jacket, which can deform the bearing shell. The smaller the bearing, the thinner the jacket is and the more likely it is to deform. In other words, this method only applies to larger, less accurate bearings (6 to 0). Flexible locking ring program also