摘要
空间飞轮机构混合陶瓷球轴承的动态摩擦力矩易受宽温域环境影响而产生波动,分析了温度引起轴承动态摩擦力矩波动的原因及过程,研究了轴承在工作温度范围内摩擦力矩的变化趋势,通过飞轮机构的热真空运转试验可知：当工作温度降至-20℃时,轴承的摩擦力矩值较20℃时提高33.3%～50.0%;当工作温度升高至60℃时,轴承的摩擦力矩值较20℃时降低25%。
The dynamic friction torque of hybrid ceramic ball bearings for space flywheel mechanism is easily fluctuated by environment with wide temperature range,and the reasons and process are analyzed. The variation trend of friction torque of bearings is studied within operating temperature range. The thermal vacuum running test of flywheel mechanism shows that the friction torque of bearings increases by a third to a half than that of 20 ℃ when operating temperature drops to- 20 ℃,and the friction torque of bearings decreases by a quarter than that of 20 ℃ when operating temperature is up to 60 ℃.
出处
《轴承》
北大核心
2016年第6期6-11,共6页
Bearing
关键词
角接触球轴承
陶瓷球轴承
飞轮
摩擦力矩
温度
angular contact ball bearing
ceramic ball bearing
flywheel
friction torque
temperature
