高周速で運転される歯車の温度分布 : 第2報, 温度上昇予測解析手法

概要

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In current industry, the high speed turbo machineries like compressors and steam or gas turbines have a tendency to be increased in their power capacities. With this tendency we will be faced that the gear size become large. Becoming large size of gear arises nonuniform temperature distribution. As the result of nonuniform temperature distribution, nonuniform thermal distortion will happen. Changing in load distribution due to thermal distortion considered to be closely related the cause of scoring and pitting failures. In order to ensure reliability of high speed gear unit, it is necessary to improve these techniques. (1) A method for predicting the temperature rise of gears and thermal distortion. (2) Tooth correction against thermal distortion. In this study the three dimensional model of calculating temperature of teeth surfaces and blanks is presented. That model includes the effect of convective cooling by lubricating oil and changing in load distribution due to mechanical deformation. Calculated results of gear teeth temperature and bending stress are reasonably close rimntal results. It is confirmed that the analtical method is practical and useful.
社団法人日本機械学会の論文
1999-02-25