Patent ID: 6553330
Filing Date: 2003-04-22
Classification: F16H

Abstract:
A measuring method for a power roller for a toroidal type continuously variable transmission, the power roller having a reference surface extending at right angles to the central axis thereof and toroidal surface in contact with traction surfaces of discs, the measuring method comprising:a process for obtaining an intersection between a first circular arc traced around a measuring point on the toroidal surface on one side by the extreme end of a segment with a length equal to the curvature radius of the traction surfaces and a second circular arc traced around a measuring point on the toroidal surface on the other side by the extreme end of the segment, in a cross section along the central axis of the power roller; a process for obtaining a plurality of intersections by repeating the process for obtaining the intersection for each of different measuring points on the toroidal surfaces; a process for selecting that one of the intersections which is situated nearest to the reference surface and concluding that the selected intersection is the tilting center of the discs; and a process for obtaining the distance from the tilting center to the reference surface.