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铁路货运提速以后,尽管我国铁路轴承改善了设计,提高了轴承的制造精度,但在实际运行中,铁路货车轴承“热轴”(铁道部规定货车轴承运行温度高于环境温度40℃为“热轴”)的现象时有发生,影响到货车运行的安全。为了解决这一问题,我们决定将货车轴承在出厂前进行磨合,提高铁路货车轴承的运行精度。为此,我们专门研制了一台铁路货车轴承在线磨合机,该机床适用于197726和197730型铁路货车轴承的磨合,其磨合效率为3～5min磨合一套轴承。
After the speed of railway freight transportation is increased, although the railway bearing in our country has improved the design and the manufacturing precision of the bearing has been raised, in actual operation, the “hot shaft” of railway freight car bearing (Ministry of Railways stipulates that the operating temperature of freight car bearing is higher than the ambient temperature of 40 ℃ is “hot Shaft ”) phenomenon from time to time, affecting the safety of truck operation. In order to solve this problem, we decided to run the truck bearings before leaving the factory to improve the running accuracy of the railway truck bearings. To this end, we have developed a railway truck bearing online grinding machine, the machine is suitable for 197726 and 197730 railway freight car running-in, the run-in efficiency of 3 ~ 5min run-in a set of bearings.