GSD-5 FACE GEAR DEVELOPMENT AND ENDURANCE TEST FOR AIRCRAFT APPLICATION(GEAR STRENGTH AND DURABILITY)

概要

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Face gear were designed and manufactured as a replacement of conventional spiral bevel gear using in the 1st stage of a helicopter main transimission. Design input speed was 6,000rpm and input torque was 482 N・m. They were made of AISI9310 steel, carburized and ground. Face gear teeth were ground by intermittent generating method with CBN wheel. Tooth form was inspected by 3D measuring machine. The quality of them was equivalent with AGMA class 12. The endurance test was conducted in Kawasaki Heavy Industries, LTD. (KHI) bench test rig. The effect of tooth flank modification was checked by the measurements of root stress. Scuffing was occured at the first run of the endurance test. Lublication oil temperature and input speed were decreased and continued the test. Finally the endurance test was performed at 140% torque and it was successfully finished at 3x10^7 pinion cycles. The result shows that the durability of face gear is equivalent to spiral bevel gear or more. The tests were performed in support of the Society of Japanese Aerospace Campanies inc. (SJAC) Advanced Aircraft Parts and Material Research Program.
一般社団法人日本機械学会の論文
2001-11-15