Abstract:
A centerless grinding machine is provided with a ferris wheel arrangement having multiple, circumferential pockets in which an annular workpiece is received from a loading chute, is internally ground by a grinding wheel and is discharged into an unloading chute after grinding by indexed rotation of the ferris wheel. The grinding machine includes a stationary alignment shoe cooperating with an individual alignment shoe carried in each pocket of the ferris wheel. In the grinding position, the stationary shoe preferably is at the 3 o'clock position while the alignment shoe in the adjacent pocket is at the 6 o'clock position. The grinding wheel is positioned on one side of the ferris wheel and a workpiece driver means is positioned on the opposite side. With the inventive grinding machine, annular workpieces, such as bearing raceways, can be loaded, ground and unloaded in rapid succession with high accuracy maintained during grinding.
Abstract:
A method of and apparatus for effecting combined surface finishing operations for a cup for tapered roller bearings. The apparatus will accept cups of random sizes, will automatically load them onto an indexing mechanism, index the cups through necessary work stations, and discharge the surface-finished cups. At the surface finishing station, a drive roller frictionally engages the cup and rotates it while a plurality of brushes are brought into engagement with the surfaces to be finished. The brushes are rotated in a direction which results in a force component which tends to hold the cup within the open pockets of the indexing mechanism. The brushes are also wear compensating so that the apparatus will operate without an attendant and without requiring a preliminary set-up or changing of parts for different sizes of bearing cups.