Forming rough deburring or annulus → → → Polishing Polishing raceway double end → solution → hot rolling surface → front coarse coarse coarse double surface → rear surface → rolling → final double-end fine grinding final rolling surface grinding → 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.
Can be made of two or more roller rolling surfaces crown-shaped generatrix, if the metric is less than convex 0.005mm, the individual can indirectly rolling surface super finishing step; if the metric is greater than the convex 0.005mm, the individual may be the last in the final rolling mill step grind surface convexity, then superfinished.
3. The needle craft course
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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