用冷辗扩的方法加工轴承内、外套,与以往传统方法相比,具有能节省材料、提高零件的物理性能和质量、缩短加工工时、减轻劳动强度等优点。在冷辗扩加工中,不但使用的压辊寿命长,而且机械设备利用率高、占地面积小、投资少,还有值得一提的优点是,经冷辗扩加工过的内、外套,热处理后的扭曲变形也比切削加工的小,这就能做到,在以后的磨削加工中, Compared with the traditional methods in the past, the method of cold rolling and expanding the inner and outer sleeves of the bearing has the advantages of saving materials, improving the physical properties and quality of the parts, shortening the working hours and reducing the labor intensity. In the cold rolling expansion workers, not only the use of long life roller, and high utilization of machinery and equipment, covers an area of ​​small, less investment, it is worth mentioning the merit is that after the cold rolling expansion of the work, the jacket, Heat distortion after the deformation than the cutting process is small, which can be done in the future grinding,