平歯車の歯面温度の測定について : 第2報, 歯形転位および歯車精度の影響について

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  • On the Measurement of Temperature Flashes on Spur Gear Teeth : 2nd Report, The Effects of the Amount of Addendum Modification and the Accuracy of Gears on the Tooth Surface Temperature
  • ヒラハグルマ ノ ハメン オンド ノ ソクテイ ニ ツイテ 2

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In the basic experiment of the study on scoring of gear teeth, it is very important to clarify the flash temperature of tooth surface. The authors have clarified the effects of amount of addendum modification on the temperature of tooth surface. In the present experiment, the gear running testing machine of the power circulation type was used. The contact point of a constantan pinion and a steel gear form a junction of ther- mocouple, and the thermoelectric power was measured by oscilloscope. The following results were obtained. (1) The wave form of oscillogram is determined in accordance with the amount of addendum modification and it nearly coincides with the value of theoretical calculation. (2) So long as the amount of addendum modification is too large, the temperature of tooth surface becomes so high. At the most suitable amount of addendum modification, it becomes the lowest. (3) The flash temperature of hobbed teeth is higher than that of ground teeth. (4) The flash temperature is higher proportional to 1/2 to 3/4 power of circumferential speed, and that value is larger than the value presented by H. Blok. (5) The flash temperature becomes higher as the carrying load increases, but the rate of temperature rising is less than the rate presented by H. Blok.

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