Geometrical instruments – Area integrators – Electrical
Patent
1975-11-03
1977-10-25
Aegerter, Richard E.
Geometrical instruments
Area integrators
Electrical
291484A, B23P 1100
Patent
active
040549992
ABSTRACT:
A shaft is confined within a housing by two indirectly mounted tapered roller bearings, and these bearings are adjusted by applying opposed axial forces to their cups, the spacing between which is dependent on the thickness of a deformable spacer located within the housing. A force of sufficient magnitude is applied to plastically deform the spacer that is between the two cups, and as the force is applied the spacing between the raceways of the two cups is monitored. The force is released when the size of the spacer will cause the cup raceways to be spaced apart a distance which provides the bearings with the correct adjustment. This distance is determined by measuring a master cup and adjusting the dimension so derived for the desired amount of end play or preload and for spring back of the spacer, hub and cups when the load is released. The process may be used where the cones are press-fitted over the shaft and have their front faces abutting. In that case, further adjustments from the raceway spacing of the master may be made to accommodate changes in the positioning of the cone raceways which result from variations in the cone bore diameters and in the locations of the cone front faces. The measurement of the cone bore diameters and front face locations are made in a fixture and compared with measurements derived from master cones which are also measured in the fixture, all for the purpose of determining deviations from the master cones. Where an integral double cup is used (no spacer) the measuring procedure is useful for selective assembly of cups and cones into bearing assemblies, with the three components being selected such that they result in a bearing having the correct adjustment.
REFERENCES:
patent: 2170493 (1939-08-01), Clapper
patent: 2627120 (1953-02-01), Hotchkiss
patent: 3131484 (1964-05-01), Storch
patent: 3672019 (1972-06-01), Barnbrook et al.
patent: 3986754 (1976-10-01), Torrant
Aegerter Richard E.
Little Willis
The Timken Company
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