METHOD AND DEVICE FOR DETERMINING LUBRICATED STATE OF ROLLING BEARING

摘要

PPROBLEM TO BE SOLVED: To accurately determine a lubricated state of a rolling bearing, taking various conditions of operation into consideration. PSOLUTION: This device for determining the lubricated state of the rolling bearing includes a setting means which sets a sound pressure variation threshold level A0 and sound pressure threshold levels AL and AM of the rolling bearing 13, based on prescribed conditions of operation, regarding the roller bearing 13 to be determined as to the lubricated state, a motor 14 which drives the bearing 13 to rotate, based on the conditions of operation, a microphone 42 which measures sound pressure generated from the bearing 13 in operation, a decision part 75 which determines the variation of the sound pressure measured by the microphone 42 and decides a start of determination of the lubricated state of the bearing when the determined variation is smaller than the variation threshold level A0, and a determination part 76 which compares the sound pressure An measured by the microphone 42 with the sound pressure threshold levels AL and AM after the start of determination is decided by the determining sound pressure decision part 75 and thereby determines the lubricated state of the bearing 13. PCOPYRIGHT: (C)2010,JPO&INPIT