METHOD FOR MANUFACTURING SPLINE TELESCOPIC SHAFT AND SPLINE TELESCOPIC SHAFT
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United States of America Patent
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Issued Date -
Sep 10, 2020
app pub date -
Feb 21, 2020
filing date -
Mar 8, 2019
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Abstract
A method for manufacturing a spline telescopic shaft according to the present disclosure includes a toothless portion forming step of forming a toothless portion in one of an external tooth of a shaft body and an internal tooth of a tubular body, a resin layer forming step of forming a resin layer by arranging one of the shaft body and the tubular body in a mold including a cavity and injecting a resin into the cavity, the cavity being included in a flat receiving surface that faces tooth flanks of one of the external tooth of the shaft body and the internal tooth of the tubular body, and a cooling step of cooling one of the shaft body including the resin layer and the tubular body including the resin layer to form a lubricant reservoir in the resin layer.
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