Toroidal-type continuously variable transmission
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Abstract
A toroidal-type continuously variable transmission, has a first continuously variable transmission mechanism and a second continuously variable transmission mechanism: wherein the first and second continuously variable transmission mechanisms are disposed coaxially with each other; the first and second input disks are connected together so as to be rotated in synchronization with each other; the first and second output disks are formed as a unified type output disk including traction surfaces on the two side surfaces thereof; on the side portion at the outer-most outside diameter of the unified type output disk, there is formed a datum plane serving as a machining datum when the traction surfaces are processed; and, an operation for finishing the datum plane is carried out after the unified type output disk is heat treated.
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Citations
11 Claims
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1-4. -4. (canceled)
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5. A method of making a unified disk for a continuously variable transmission, the method comprising:
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forming first and second disks as a unified disk including on two side surfaces thereof traction surfaces configured for contacting with a pair of power rollers;
forming a datum plane on a side portion at the outer-most outside diameter of said unified disk, wherein the datum plane serves as a machining datum when said traction surfaces are processed;
heat treating said unified disk; and
after said heat treating, performing a finishing operation on said datum plane. - View Dependent Claims (6)
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7. A method of making a unified disk for a continuously variable transmission, the method comprising:
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forming first and second disks as a unified disk including on two side surfaces thereof traction surfaces configured for contacting with a pair of power rollers;
forming a stepped portion projected from an end face of said unified disk, wherein the stepped portion serves as a machining datum when said traction surfaces are processed;
heat treating said unified disk; and
after said heat treating, performing a finishing operation on said stepped portion. - View Dependent Claims (8, 9)
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10. A method of making a unified disk for a continuously variable transmission, the method comprising:
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forming first and second disks as a unified disk including on two side surfaces thereof traction surfaces configured for contacting with a pair of power rollers;
forming a groove portion in the end face at the outer-most outside diameter of said unified disk, wherein the groove portion serves as a machining datum when said traction surfaces are processed;
heat treating said unified disk; and
after said heat treating, performing a finishing operation on said groove portion. - View Dependent Claims (11)
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Specification