Mitsubishi Heavy Industries Technical Review
    Vol. 52 No. 3 (2015)   Machine Tools
    Technical Papers

    Development of GE10A Highly-efficient Dry-cut Hobbing Machine Targeting the Automotive Industry

    Kazuyuki Ishizu,
    Yoko Hirono,
    Hirohisa Ichihata,
    Masaru Ueno,
    Yoshihiro Nose

    With the growing number of small diameter pinion gears and sun gears for the planetary gear reduction mechanism used for automatic transmissions (AT), the improvement of machining efficiency is an issue. Mitsubishi Heavy Industries, Ltd. (MHI) achieved highly-productive machining for the newly developed GE10A hobbing machine by reducing the time needed for cutting and set-up/tool changing, as well as by reviewing tool specifications. In addition, the working environment was further improved through countermeasures for oil mist discharge and machining noise.