F111004 ギヤドモータ用微小モジュール小形歯車の仕上げ加工技術 : 小形・環境負荷低減・省エネ型歯車仕上げ加工法の開発

Abstract

Precise micromodule small gears are necessary to realize high-strength low-noise compact geared motors. In the gear manufacturing process, burrs and nicks are generated at the edge or ridgeline of the work gear tooth and they get the gear accuracy worse. Therefore a removal method of burrs and nicks is important. However, it is difficult to remove them from small gears by using usual tools and usual processing devices because the tooth groove of small gears is narrow. In addition, high performance in terms of size, energy consumption, environmental impact, and cost is required for gear manufacturing devices. In order to solve these problems, FRP gear-shaped tool and finishing device for small gears using oscillation have been developed in this research. Experiments are carried out and it is confirmed that the proposed method can remove burrs and nicks from small gears. This finishing device achieves small size, low energy consumption, low environmental impact, and low cost compared with conventional finishing devices. This finishing method has been used already in the gear manufacturing process in the industrial field and it has contributed to higher accuracy and lower defect rate of manufactured gears.