焼入れ歯車の転造仕上加工に関する研究 : 第2報, クラウニングダイスによる加工

概要

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Roll-finishing of a gear with the surface hardness of H_<RC>=55 was very difficult because of the interference between the tooth tip of the die-wheel and the tooth root of the work-gear. The main purpose of the present report is to roll-finish such a quenched gear. For this purpose, experiments of roll-finishing were carried out using a crowned die-wheel which enables low load operations. Work-gears were cut by hob with a protuberance so as to prevent interference. As a result, it was found that a gradual feed of work-gear in its axial direction contributes to improvement of the tooth form accuracy of a gear with the high surface hardness. Furthermore, investigations of the tooth form of die-wheel after roll-finishing experiments reveal that the distributed loads on the tooth flank of the die-wheel do not exceed the load capacity of die-wheel material, but the tool life of the die-wheel may be shorter than that in roll-finishing of unquenced gears.
社団法人日本機械学会の論文
1990-08-25