振動解析によるボールベアリング回転論の表面粗さの高精度な推定

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This paper describes vibration based diagnostic method for estimation the surface roughness on the race in ball bearings. The surface roughness has been measured by a stylus which directly traverses the surface of the ring obtained by talking apart the ball bearing. We developed a new method to accurately estimate the surface roughness by analyzing the short-length vibration signal which is excited when balls contact with the surface of a defective rotating ring in a ball bearing. Our experimental results confirm that the roughness estimated by the proposed method agrees with that measured directly by using a stylus even in the case of crack μm wide. We applied this new method to were diagnosis of surface roughness in small-sized ball bearings and inferior samples were detected with a 94. 7% accuracy rate.
社団法人日本音響学会の論文