Abstract: Contours of a surface of a bearing which extends about an axis are displayed on a grid. To visualize the contours, points on the surface are measured at a plurality of angular positions to determine the corresponding measured values. The measured values at each angular position are normalized to determine a normalized measurement datum corresponding to each angular position. The normalized measurement datum is subtracted from each of the measured values to determine a plurality of deviations of the corresponding points. Shades are assigned that correspond to a range of possible deviations. Each of the deviations are displayed as a data segment on a grid that represents the shape of the surface of the bearing. Each data segment is shaded on the grid to the corresponding shade to provide a topographical representation of the contours of the surface of the bearing.

Abstract: Contours of a surface of a bearing which extends about an axis are displayed on a grid. To visualize the contours, points on the surface are measured at a plurality of angular positions to determine the corresponding measured values. The measured values at each angular position are normalized to determine a normalized measurement datum corresponding to each angular position. The normalized measurement datum is subtracted from each of the measured values to determine a plurality of deviations of the corresponding points. Shades are assigned that correspond to a range of possible deviations. Each of the deviations are displayed as a data segment on a grid that represents the shape of the surface of the bearing. Each data segment is shaded on the grid to the corresponding shade to provide a topographical representation of the contours of the surface of the bearing.

Abstract: An engine camshaft assembly includes a hollow tubular shaft mounting a plurality of separate cam sets, each including multiple camps. Each cam includes an outer cam surface bounded by opposite parallel sides and including an axial opening extending through said sides. Each cam set includes at least two associated cams positioned in side-by-side relation with their openings axially aligned. A shoulder protruding from a side of one of the cam engages an adjacent side of another associated cam, thus maintaining the sides of the associated cams in fixed parallel relation. The tubular shaft extends through the cam openings and supports the cam sets on a common rotational axis. During assembly, the shaft is expanded into engagement with the openings so that the cam sets are retained in fixed axial and angular relation on the shaft.