Shaft alignment checking method

Details Shaft alignment checking method Shaft alignment checking method

1990-04-04

1991-06-25

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356152, G01N 2186

Patent

active

050269984

ABSTRACT:
A method for checking the coaxial alignment of tandem-arranged shafts involving the detection of a coaxial in-line or an offset state of the said shafts. In different angular positions of measurement two independent signals are produced related to any parallel offset and any angular offset of the shafts respectively. In the known methods the angular positions of measurement are bound by a mutual angular spacing of 90.degree.. This leads to problems if there are obstructions in these angular positions of measurement of the device used for measuring. The method in accordance with the invention makes possible alignment checking operations using freely selectable angular positions of measurement.

REFERENCES:
patent: 4741618 (1988-05-01), Loy
patent: 4774405 (1988-09-01), Malin
patent: 4847511 (1989-07-01), Takada et al.
patent: 4864148 (1989-09-01), Lysen et al.

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