A mill roll is supported at its roll necks on tapered roller bearings, each having several cones and corresponding cups and rows of tapered rollers between the raceways of each cone and cup. Each bearing also has rib rings located at the ends of its cups to provide surfaces against which the large d
A mill roll is supported at its roll necks on tapered roller bearings, each having several cones and corresponding cups and rows of tapered rollers between the raceways of each cone and cup. Each bearing also has rib rings located at the ends of its cups to provide surfaces against which the large diameter ends of the rollers in its several sets bear. The cups and rib rings are clamped together within a chock, and they, in turn, capture the several rows of rollers. The cone raceways taper downwardly away from the roll body and lie within a single conical envelope having its center along the axis of rotation for the bearing. This arrangement allows the chock, which carries the cups, rib rings and rollers, to be passed over the cones on the roll neck. The roll body is ground while the roll is supported on the bearings that are within the chocks and with the bearings in a condition of preload. This eliminates practically all eccentricity, so runout is maintained at a minimum. The bearings B are also maintained under preload during mill operation.
대표청구항▼
A bearing assembly for supporting a shaft having a neck and a body, said bearing assembly comprising: a cone, formed as a single element or multiple elements, fitted over the neck and having outwardly presented tapered raceways, all of which taper downwardly away from the body of the shaft, the cone
A bearing assembly for supporting a shaft having a neck and a body, said bearing assembly comprising: a cone, formed as a single element or multiple elements, fitted over the neck and having outwardly presented tapered raceways, all of which taper downwardly away from the body of the shaft, the cone raceways being progressively greater in size so that each raceway beyond the smallest is at its small end at least as large as the large end of that raceway which precedes it; a plurality of cups encircling the cone and having tapered raceways presented inwardly toward, but spaced outwardly from, the raceways of the cone and being inclined in the same direction as the raceways of the cone, there being a separate cup raceway for each cone raceway; tapered rollers arranged in circumferential rows between the raceways of the cups and cone, such that the rollers along their sides contact the raceways of the cone and cups, there being a separate row of tapered rollers within each cup; a major rib located in a fixed position at the end of each cup and projecting inwardly past the large diameter end of the raceway for the cup to provide a surface against which the large diameter ends of the rollers bear; a housing surrounding and containing the cups; clamp means on the housing for clamping the cups securely together so that they cannot shift relative to each other in the axial direction; and means for exerting an axially directed force on the housing, with the force being directed generally toward the body of the shaft so as to maintain the rollers seated against the raceways of the cone and cups. A process for supporting a mill roll having a roll body and roll necks at the end of the roll body, said process comprising: installing a cone of one or multiple elements over each roll neck, with the cone having outwardly presented raceways which taper downwardly away from the roll body; grinding the cone along its raceways while it is on the roll neck so that the raceways have a common center which is coincident with the axial center of the roll neck on which the cone is mounted; installing cups, rollers, and rib rings in housings, with the rollers being arranged in rows within the cups and the rib rings being at the large ends of the rows of rollers, all with the cups and rib rings clamped snugly together; installing the housings, with their cups, rollers, and rib rings, over the roll necks so that the rollers seat against the cone raceways; whereby the cones, rollers, cups, and rib rings about each roll neck form a bearing for the roll neck; supporting the roll on its bearings; and while the roll is supported on its bearings, grinding the roll body so that it has its center along the axis of the bearing.
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이 특허에 인용된 특허 (2)
Clapp James R. (Canton OH), Clamp-up device for roll neck bearings.
Moritz Werner (Siegen DEX) Barten Axel (Siegen DEX), Device for positioning and locking a chock on a roll pin during installation of a set of rolls in or removal from a roll.
Hewitt, William G., Method of mounting and positioning a bearing assembly onto a shaft using a hydraulically actuated tool that applies a preload to the shaft.
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