1. Process history of cylindrical roller bearings
Blank forming→deburring or ring belt→soft grinding raceway surface→soft grinding double end face→heat solution→pre-grinding rolling surface→rough grinding double end face→fin rough grinding rolling surface→finishing grinding double end face→fine and final grinding rolling surface→ Super-finishing rolling surface → cleaning, boring → final inspection appearance, size grouping → oiling packaging.
2. Process history of tapered roller bearings
Blank forming → deburring or ring belt → soft grinding raceway surface → soft grinding double end face → heat solution → coarse grinding rolling surface → fine grinding rolling surface → grinding ball base surface → final grinding rolling surface → super finishing rolling surface → cleaning, boring → Final inspection appearance, size grouping → oiling packaging.
The above two types of rollers can be made into a convex shape busbar rolling surface. If the convexity measure is less than 0.005 mm, the individual can be indirectly performed in the superfinishing rolling surface process; if the convexity measure is larger than 0.005 mm, the individual can be rolled in the last final grinding. The surface process grinds the crown and then performs super finishing.
3. The process of needle roller
Blank forming → deburring → heat solving → coarse, fine, final grinding rolling surface → super finishing rolling surface or sawdust polishing.
For the flat head and the cone needle roller, if the blank forming is difficult to guarantee the length dimension tolerance, the grinding double end process can be added in the grinding and rolling. If a convex shaped busbar rolling surface is required, it can be carried out indirectly in the superfinishing rolling surface or the calendering process.
4. Process history of asymmetric spherical roller
Blank forming → deburring or ring belt → soft grinding raceway surface → soft grinding double end face → heat solution → grinding aspheric end face → grinding ball end face → coarse, fine, final grinding rolling surface → polishing → cleaning, boring → final inspection appearance, size Group → oiled packaging.
The process of symmetrical spherical roller is:
Blank forming→deburring or ring belt→soft grinding raceway surface→soft grinding double end face→heat solution→rough grinding rolling surface→coarse, final grinding double end face→fine, final grinding rolling surface→polishing→cleaning, boring→final inspection appearance, Dimensions grouped → oiled packaging.
If the final rolling surface process can reach the surface roughness request, polishing may not be performed.
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