Provided is construction and a manufacturing method of an inner shaft for an extendable and contractible shaft for which finishing for forming a synthetic resin coating layer 19a on the outer-circumferential surface of a male spline section 14b can be performed easily, while at the same time an increase in weight thereof is suppressed. A concave groove 22 that extends in the axial direction is provided on the outer-circumferential surface of the male spline section in a state so as to be continuous in the axial direction with one male spline groove 23 of the male spline grooves 23 of the male spline section 14b. A portion of the concave groove 22 that is separated in the axial direction from the male spline section 14b is used to perform phase alignment of a cutting tool for performing a finishing process of a coating layer 19a and unevenness in the circumferential direction of the male spline section 14b.


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    Title :

    INNER SHAFT FOR TELESCOPIC SHAFT AND PRODUCTION METHOD THEREOF


    Additional title:

    INNENWELLE FÜR TELESKOPISCHE WELLE UND HERSTELLUNGSVERFAHREN DAFÜR
    ARBRE INTERNE DESTINÉ À UN ARBRE TÉLESCOPIQUE ET SON PROCÉDÉ DE PRODUCTION


    Contributors:

    Publication date :

    2019-08-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen



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