US 4,391,120 A · Radial deformation means for cylindrical objects such as wheels

Abstract

A radial truing device is disclosed having two sets of parallel jaws that are spaced apart to engage the opposite bead seats of a wheel, and the like. The jaws comprise radially extending slides, and each set of jaws is actuated by a separate ring, which rotates to move overcenter devices to an inline position to move the jaws radially inwardly. The overcenter devices bear against one half of a ring, and an antifriction bearing capable of absorbing radial and lateral movement is positioned between the other half of the ring and the frame. In the preferred embodiment, the overcenter devices are toggles that are connected to the jaws and to the rings by pins, and the bearings are generally in line with the connection of the overcenter device and the ring, so that the overcenter devices run true. The rings are actuated separately so that a lateral working of the wheel can be provided and so that a sequential deformation of the wheel is accomplished by forces exerted over a greater period of time than is possible by the prior art. In addition, a radially shiftable table having a resilient surface is provided which will accommodate the complex movement of the workpiece that is produced by the two sets of jaws.

Claims20

Dependent claims

Truing apparatus for wheels having a rim with opposing bead seats and a web, said apparatus comprising:

radially inwardly moving concentric dies movable in a predetermined plane, a rigid support surface parallel to said predetermined plane, a plurality of rollers having the same diameter on said rigid support surface, an annular surface plate on said rollers free to move parallel to said rigid support surface, and a resilient surface on said annular surface plate, said resilient surface being arranged to support the rim of a wheel being worked open by said radially inwardly moving dies and being adapted to accommodate lateral deflection produced by said dies.

A device for truing a generally cylindrically shaped workpiece, comprising:

a frame, a first set of inwardly movable dies carried by said frame, a second set of inwardly movable dies carried by said frame, said first and second sets of dies being movable in generally parallel planes, a first ring positioned outwardly of said first set of dies with one side portion of said ring being opposite said first set of dies and the other side portion being opposite said frame, a first antifriction bearing accurately positioning said other side of said first ring from said frame, a second ring positioned outwardly of said second set of dies with one side portion of said ring being opposite said second set of dies and the other side portion being opposite said frame, a second antifriction bearing accurately positioning said other side of said second ring from said frame, first and second sets of toggles with the first set connecting said first ring and first set of dies and with said second set of toggles connecting said second ring and second set of dies, said toggles being pinned to their rings on a circular centerline generally opposite the respective antifriction bearing, and means for rotating said first and second rings sequentially, and whereby a workpiece positioned inwardly of said dies is centered and held by the first set of dies accurately with respect to said frame, and the second set of dies finishes the deformation of the workpiece corresponding to the deformed surface established by the first set of dies.

A device for truing a wheel blank having a rim with opposing tire bead seats, said device comprising:

a frame, a first set of radially extending slides carried by said frame and having radially inner ends for abutment with one of the tire bead seats of a wheel positioned inwardly of said slides, a second set of radially extending slides carried by said frame and having radially inner ends for abutment with the other one of the tire bead seats of the wheel, a first ring positioned radially outwardly of said first set of slides with one side portion of said ring being opposite said slides and the other side portion being opposite said frame, a first antifriction bearing accurately positioning said other side of said first ring from said frame, a second ring positioned radially outwardly of said second set of slides with one side portion of said ring being opposite said slides and the other side portion being opposite said frame, a second antifriction bearing accurately positioning said other side of said second ring from said frame, first and second sets of toggles with the first set connecting said first ring and first set of slides and said second set of toggles connecting said second ring and second set of slides, said toggles being pinned to their rings on a circular centerline generally opposite the respective antifriction bearing, and means for rotating said first and second rings.

Dependencies are inferred from the claim text.

Radial deformation means for cylindrical objects such as wheels

Life of this patent

Radial deformation means for cylindrical objects such as wheels

Life of this patent

Abstract

Claims20