Method for manufacturing a variator disc for use in a toroidal continuously variable transmission
US9132483B2 · kind B2 · utility
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1References
7Claims
0Family size
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Key dates
| Filing date | Jul 15, 2013 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Mar 6, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/5109
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A steel disc blank provides a first face with a concave race, a second face opposite to the first face, a central through bore extending between the first and second face, and an outer peripheral edge; the disc blank is heat-treated; then the bore is turned, thus obtaining at least one cylindrical turned portion of the bore, and then the concave race is turned, holding the disc blank locked on the lathe by means of jaws engaging on the machined cylindrical portion, using this turned cylindrical portion as a reference surface for turning of the concave race.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.