PROBLEM TO BE SOLVED: To provide a manufacturing method of a sun gear and a ring gear in a steering device in which a tooth part of the sun gear and the ring gear of a planetary gear device which is engaged with a tooth part of the planetary gear which is constituted of a planetary worm can be processed by using a processing worm having substantially the same specification as that of the planetary gear at a tooth part in which the sun gear constituted of a worm wheel and the ring gear constituted of the worm wheel are formed on an inclined face (including a face orthogonal to a wheel shaft) which is inclined to the wheel shaft.SOLUTION: In a manufacturing method of a sun gear and a ring gear in a steering device, tooth parts 11b, 12b of the sun gear 11 and the ring gear 12 are processed by using a processing worm 113 whose tooth pitches related to an axial line are equal compared with that of a planetary gear 13, and diameter dimensions of tooth tips and tooth bottoms are slightly small, or equal or larger, and which is formed by being electrodeposited with abrasives 114 on a surface of the worm.SELECTED DRAWING: Figure 8

    【課題】ウォームホイールで構成したサンギヤ及びウォームホイールで構成したリングギヤが、ホイール軸に対して傾斜する傾斜面(ホイール軸に対して直交する面を含む)に形成された歯部で遊星ウォームで構成したプラネタリギヤの歯部と噛み合う遊星歯車装置のサンギヤ及びリングギヤの歯部を、プラネタリギヤとほぼ同じ諸元の加工用ウォームにより加工することができる、ステアリング装置におけるサンギヤ及びリングギヤの製造方法を提供する。【解決手段】ステアリング装置におけるサンギヤ及びリングギヤの製造方法は、プラネタリギヤ13と比較して軸方向に関する歯のピッチが同等で且つ歯先及び歯底の径寸法がそれぞれやや小さいか同等以上であるウォームの表面に砥粒114を電着して成る加工用ウォーム113により、サンギヤ11及びリングギヤ12のそれぞれの歯部11b、12bの加工を行う。【選択図】図8


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    Title :

    MANUFACTURING METHOD OF SUN GEAR AND RING GEAR IN STEERING DEVICE, SUN GEAR AND RING GEAR


    Additional title:

    ステアリング装置におけるサンギヤ及びリングギヤの製造方法、及びサンギヤ及びリングギヤ


    Contributors:

    Publication date :

    2017-05-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B23F Herstellen von Zahnrädern oder Zahnstangen , MAKING GEARS OR TOOTHED RACKS / B62D MOTOR VEHICLES , Motorfahrzeuge / F16H Getriebe , GEARING



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