PROBLEM TO BE SOLVED: To reduce weight of a rack shaft while improving phase angle accuracy of a first rack tooth and a second rack tooth.SOLUTION: A rack shaft 50 includes: a hollow shaft body 51; and first and second rack teeth 52, 53 respectively engaging with first and second pinion gears 16, 25. The shaft body 51 has a second crushed part 55 including a flat part 55a at an outside surface that is formed by being crushed in a radial direction. The second rack tooth 53 is formed by cutting the second crushed part 55.SELECTED DRAWING: Figure 4C

    【課題】第1ラック歯と第2ラック歯の位相角精度を向上させつつラックシャフトを軽量化する。【解決手段】ラックシャフト50は、中空のシャフト本体51と、第1及び第2ピニオンギア16,25にそれぞれ噛み合う第1及び第2ラック歯52,53と、を備え、シャフト本体51は、径方向に潰すことによって形成され外面に平坦部55aを含む第2潰し部55を有し、第2ラック歯53は、第2潰し部55に切削加工により形成される。【選択図】図4C


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    Title :

    RACK SHAFT AND METHOD FOR MANUFACTURING RACK SHAFT


    Additional title:

    ラックシャフト及びラックシャフトの製造方法


    Contributors:

    Publication date :

    2018-11-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16H Getriebe , GEARING / B21J FORGING , Schmieden / B21K MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS , Herstellen von Schmiede- oder Presserzeugnissen aus Metall, z.B. Hufeisen, Nieten, Bolzen oder Rädern / B23F Herstellen von Zahnrädern oder Zahnstangen , MAKING GEARS OR TOOTHED RACKS / B62D MOTOR VEHICLES , Motorfahrzeuge



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