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.