Method for manufacturing a variator disc for use in a toroidal continuously variable transmission

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 t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MARCHIS RENATO, RICHAUD STEFANO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING BORING COMBINED OPERATIONS ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR OTHER WORKING OF METAL PERFORMING OPERATIONS THERMAL INSULATION IN GENERAL TRANSPORTING TURNING UNIVERSAL MACHINE TOOLS WEAPONS
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Beschreibung
Zusammenfassung:	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.