| 摘要 |
PROBLEM TO BE SOLVED: To provide a super-finishing method capable of obtaining a surface roughness equivalent to conventional super-finishing polishing by using a water-soluble working fluid, and to provide a super-finishing grinding wheel for use in the same.SOLUTION: In a super-finishing work using a super-finishing grinding wheel 10 and using a water-soluble working fluid F, the super-finishing grinding wheel having abrasive particles in a range of #600 or more and less than #2000 and a stiffness of RH-40 or less is used, and thereby a mirror finished surface same as the super-finishing work using a conventional water-insoluble working fluid is obtained on a raceway surface (workpiece surface) 22 of an inner ring 20 of a ball bearing. Accordingly, the super-finishing grinding wheel solves such a risk that oil mist is filled in a factory for performing a super-finishing work to lower a work environment when using the water-insoluble working fluid, and also an upper-limit value in a use allowable temperature range of the water-insoluble working fluid may be exceeded by the frictional heat generated in the super finishing polishing. |
