Measuring and testing – Vibration – By mechanical waves
Patent
1993-09-03
1996-05-21
Williams, Hezron E.
Measuring and testing
Vibration
By mechanical waves
7386249, 7386259, G01M 1304
Patent
active
055178588
ABSTRACT:
While maintaining a shaft in a fixed state, an outer ring is rotated. Vibrations of the shaft are detected by a first vibration pickup and a second vibration pickup. Detection signals of both the vibration pickups are delivered to a frequency converter via amplifier, respectively. The frequency converter determines, by Fourier transformation, the rotation frequency of the outer ring, the revolution frequency of balls and the resonance frequency of the double-row ball bearing. A first computing assembly then calculates the contact angle and bearing rigidity, and a second computing assembly calculates the preload.
REFERENCES:
patent: 3023604 (1962-03-01), Gordon et al.
patent: 3287966 (1966-11-01), Haan et al.
patent: 4352293 (1980-10-01), Kurihara et al.
patent: 4406169 (1983-09-01), Ikeuchi et al.
Translation of SU 1049758.
Translation of Article--"Roller Bearing Engineering", pp. 248-252, 1978.
"NSK Report", pp. 59-66, Nov. 1989, published by NSK Ltd.
"Korogari Jikuuke Kogaku (Rolling Bearing Engineering)", pp. 248-252, compiled by the Rolling Bearing Engineering Edition Committee and published by Kabushiki Kaisha Kokendo.
Kawamata Takeo
Maeda Takashi
Matsuzaki Hiroyuki
Ashraf Nashmiya
NSK Ltd.
Williams Hezron E.
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