Mitsubishi Heavy Industries Technical Review
    Vol. 57 No. 3 (2020)   Machine Tools
    Technical Papers

    Development of High-precision Gear Hobbing Machine for Small-module Gears Used for Precision Reduction Gears

    Kazuyuki Ishizu,
    Shingo Takada

    In recent years, robot technology has advanced remarkably and the introduction of industrial robots is accelerating in order to reduce labor and automate factory lines. With such a background, the demand for precision reduction gears used for robot articulations has been increasing, and the production volume of small-module and high-precision gears used inside precision reduction gears is expected to increase. In the industrial robot market, which will continue to grow, highly-precise reduction gears are required in order to improve the performance of robots. Therefore, there is a need for equipment that can machine gears to be used inside reduction gears stably with high accuracy and high efficiency. Mitsubishi Heavy Industries Machine Tool Co., Ltd. has developed the GE15FRplus gear hobbing machine, which can realize high-precision and high-efficiency machining to meet this need. This report presents the features and machining examples of this gear hobbing machine.