黄銅系ウォームギヤの面圧強さに関する研究 : 第1報, ピッチング強さ

概要

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It is generally believed that a running-in ability, a wear resistance and an allowable loading capability of the brass gear should be markedly less than those of the bronze gear. Particularly, in case of the high-grade gear (for example, a worm gear), it is not clear how to design them using the brass material. IN recent years, one wishes to cut down an expensive copper on the ground of nursing resources as much as possible, and to make gears of brass that has a better workability (forging), than bronze. Therefore, brass should be looked at again, and a superior high-tension brass is being developed as a new gear material. However, the data for the fatigue strength of the brass material is poor, and there are almost no data or standard designs for the brass gear (except one standard of a worm gear). Hence, in this work, pitting fatigue strength of the brass was quantitatively examined using the two-disk rolling contact testing machine. Furthermore, simulated tests with roller-discs under severe sliding conditions and real tests with worm gears were conducted, and suitabilities and imperfections of the standard were investigated.
1989-01-25