Optics: measuring and testing – Angle measuring or angular axial alignment – With photodetection remote from measured angle
Patent
1986-04-24
1987-12-22
Buczinski, Stephen C.
Optics: measuring and testing
Angle measuring or angular axial alignment
With photodetection remote from measured angle
356150, G01B 1126, G01C 100
Patent
active
047143444
ABSTRACT:
A laser system is provided for monitoring geometric errors in a machine, measuring apparatus or the like. The laser systems comprises at least one dual laser beam generator and at least one target assembly. The dual laser beam generator is operative to generate first and second tightly focused parallel laser beams. The target assembly comprises first and second targets in line respectively with the first and second laser beams. The targets are operative to sense the precise location at which they are impinged upon by the laser beams. The target assembly further includes a beam splitter that is operative to direct a portion of one laser beam through an angle. A third target is provided in line with the diverted portion of the laser beam. The three targets are operatively connected to a control means which utilizes the data sensed by each target to assess pitch, roll and yaw rotational errors as well as pure displacement errors. A plurality of such systems may all be operatively connected to a single control means.
REFERENCES:
patent: 3603691 (1971-09-01), Hamilton
patent: 3762820 (1973-10-01), Zoot et al.
patent: 3816000 (1974-06-01), Fiedler
patent: 3902810 (1975-09-01), Hamar
patent: 4045129 (1977-08-01), Hamar
patent: 4105339 (1978-08-01), Wirtanen
patent: 4297031 (1981-10-01), Hamar
patent: 4382680 (1983-05-01), Hamar
patent: 4566202 (1986-01-01), Hamar
"Machine Alignment Speeded by Laser" by A. W. Young, 8/18/66 The Iron Age Hamar Laser Instruments Brochure 1984.
"Laser Alignment in Industry" by Martin R. Hamar ASTME Technical Paper 1968.
"Laser Alignment--Current Uses and Applications" by Martin R. Hamar SME Technical Paper 1974.
Buczinski Stephen C.
Casella Anthony J.
Hespos Gerald E.
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