Provided are a structure and a production method of an inner shaft for a telescopic shaft whereby weight increase can be suppressed, and the finishing process for forming a synthetic resin coating layer (19a) on the outer peripheral surface of a male spline part (14b) can be performed easily. A concave groove (22) extending in the axial direction is provided to the outer peripheral surface of an inner shaft (15a) in a state of connecting in the axial direction with one male spline groove (23) of the male spline grooves (23) constituting the male spline part (14b). A portion of the concave groove (22) that is distanced in the axial direction from the male spline part (14b) makes phase matching possible between the cutting tool for performing the finishing process on the coating layer (19a), and the concavities and convexities relative to the circumferential direction in the male spline part (14b).


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    Titel :

    INNER SHAFT FOR TELESCOPIC SHAFT AND PRODUCTION METHOD THEREOF


    Beteiligte:

    Erscheinungsdatum :

    20.05.2015


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

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



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