Common causes that lead to high speed precision machine tool bearings noise analysis

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Vibration of high-speed precision machine tool bearings bearing failure impact. Example: peeling, indentation, corrosion, cracks, wear and tear and will in bearing vibration detection reflected overall eccentric bearing vibration measuring devices (frequency analyzer and vibration meter or the like) can measure the magnitude of the vibration is inferred by the frequency distribution of the measured values ​​of the abnormal vibration due to bearing premise or sensor mounting position different measurement value of each machine in advance for analysis comparison to determine the judgment scale.
1, wounds tone (fretting wear)
Background: motor transport air-conditioning plant noise check found that noise.
Features: Continuous issued rattling ... "sound.
Reasons: because of the bumpy vibration in the transportation, high-speed precision machine tool bearings steel ball and rolling fretting wear caused by the sound.
Countermeasures: improved packaging and transportation, the fretting wear grease to improve the pass rate.high speed bearing
2, wounds tone (brinelling)
Background: After the motor assembly, noise check and found that noise.
Characteristics: Continuous issued a the "carbazole la la ......." sound.
Reasons: the shaft into the axis of the shaft collar or bearing chamber, bearing internally generated Brinell indentation.
Countermeasures: resistance to indentation bearing design to improve the assembly pass rate, "NSK" anti-indentation design.
3, the holder tone
Background: The motor assembly, noise check noise.
Features: continuous or intermittent issue "grumble grumble Mile Mile ......" the voice.
Reasons: to keep the ball collision phase noise caused by friction.
Solution: keep the device tone retainer grease.
4, foreign body tone
Background: The motor assembly, noise check noise.
Features: intermittent issue "snapped snapped Mile Mile ......" sound.
Reason: foreign matter into the interior of the high-speed precision machine tool bearings.
Countermeasures: to impro ve the cleanliness of the assembly line, rotor and bearing.bearing sales