Detailed explanation of Koyo bearing's ultra-precision machining steps

Detailed explanation of Koyo bearing's ultra-precision machining steps. Koyo bearing super finishing sequence can be generally divided into three steps: cutting, semi-cutting, finishing finishing. 1. Cutting of Koyo bearings: When the surface of the grindstone is in contact with the convex peak of the surface of the rough raceway, the force per unit area is larger because of the small contact area, and under certain pressure, the grinding stone was first "anti-cutting" by Koyo bearing workpiece, so that the surface of the local grinding stone particles scattered and broken, revealing some new sharp abrasive particles and edge. At the same time, the CONVEX peaks on the surface of Koyo bearing parts are cut rapidly, and the convex peaks and the grinding metamorphosis layer on the surface of Koyo bearing parts are removed by cutting and anti-cutting. This stage is called the cutting stage, in which the bulk of the metal is removed. 2, Koyo bearing semi-cutting: With the processing continued to stop, Koyo bearing workpiece surface was gradually ground. At this point, the surface of the grinding stone and workpiece contact area added, the pressure on the unit area reduced, cutting depth reduced, cutting can be weakened. At the same time, the pores on the surface of the grindstone are blocked, and the grindstone is in a semi-cut form. This stage is called the semi-cutting stage of Koyo bearing finish machining. During the semi-cutting stage, the cutting marks on the surface of the Koyo bearing workpiece become shallow and appear darker. 3, Koyo bearing finishing stage: This is the Koyo bearing super finishing a step. As the surface of the workpiece is gradually ground, the contact area between the grinding stone and the surface of the workpiece is further increased, and the surface of the grinding stone and the Koyo bearing workpiece is gradually separated by a smooth oil film, the pressure on the unit area is very small, and the cutting effect is reduced, automatic stop cutting. This stage is called the finishing stage. There is no cutting mark on the surface of the workpiece in the finishing stage, and Koyo bearing has a bright finish luster.