A method for divided measurement of the lateral curvature of rings was developed for use in helping assure the quality of metal pushing V-belts for continuously variable transmissions (CVT). The method measures the lateral curvature without cutting the ring by dividing the full circumference into several partial segments that are measured separately. The data for the overlapping portions are cross-checked and the data starting point is then shifted over to calculate the peak-to-trough height automatically. The maximum quantity is taken as the lateral curvature for evaluation. The conventional method of lateral curvature measurement by cutting and expanding had shortcomings because that method could not be used for measurement prior to testing on actual transmissions and the lateral curvature varied depending on the point of cutting when measuring rings with points of curvature change. The present approach has resolved those issues.
Article of Honda R&D Technical Review Vol.14 No.2 (57 - 62)