MANUFACTURING METHOD FOR STEERING SHAFT OF STEERING DEVICE

To provide a manufacturing method for a steering shaft that facilitates chucking.SOLUTION: The manufacturing method for a steering shaft of a steering device according to the present invention includes: a reduced diameter part forming step of forming a reduced diameter part 10e in a member 10M in a...

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Bibliographische Detailangaben
Hauptverfasser:	KITAMURA KEISUKE, MARUYAMA TATSUYOSHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS,WHEELS, RINGS, BARRELS, BALLS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	To provide a manufacturing method for a steering shaft that facilitates chucking.SOLUTION: The manufacturing method for a steering shaft of a steering device according to the present invention includes: a reduced diameter part forming step of forming a reduced diameter part 10e in a member 10M in a first state to form a member 10M2 in a second state; and a ball screw groove forming step of forming a ball screw groove 10c in the member 10M2 in the second state by rolling to form a member 10M3 in a third state.SELECTED DRAWING: Figure 7 【課題】本発明の目的は、チャッキングの容易な転舵軸の製造方法を提供することにある。【解決手段】本発明のステアリング装置の転舵軸の製造方法は、第１の状態の部材１０Ｍに縮径部１０ｅを形成して第２の状態の部材１０Ｍ２を形成する縮径部形成工程と、第２の状態の部材１０Ｍ２に転造によりボールねじ溝１０ｃを形成して第３の状態の部材１０Ｍ３を形成するボールねじ溝形成工程と、を有する。【選択図】図７