Importance

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Abstract

A method of machining tapered roller bearing inner rings, wherein after the inner ring raceway groove 14 has been finish-ground, the inner ring small end face 13 and cone back face rib surface 12 are simultaneously finish-ground. In the manufacture of double row tapered roller bearings, in order to ensure that the assembly clearance which is produced during assembly of double row tapered roller bearings is always maintained constant, the method is intended to finish the raceway groove diameter to a predetermined dimension on the basis of the small end face 13, even if there is a variation in the diameter of the raceway groove 14 of each tapered roller bearing. Thus, the method comprises converting any deviation of the raceway groove diameter from a target dimension into a deviation in the inner ring axial direction, feeding the converted value back to an in-process control gauge 30 for controlling grinding operation, and simultaneously grinding the small end face 13 and cone back face rib surface 12 of the inner ring 10 by an end face grinding stone 42 and a rib grinding stone 41 integrally connected with the former, under the control of the gauge.

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First Claim