Geometrical instruments – Area integrators – Electrical
Patent
1978-05-15
1980-01-08
Stearns, Richard R.
Geometrical instruments
Area integrators
Electrical
331795R, G01B 728
Patent
active
041820452
ABSTRACT:
A device for checking involutes and helix angles of cylindrical gears by electronically compensating for mechanical errors, which includes a mechanically operating transmission chain, especially a rolling transmission, a sine bar, a sliding block linkage and/or a lever transmission, which transmission chain guides a measuring feeler relative to a gear to be checked on the required reference curve. The device furthermore includes one length pick-up each at both ends of the transmission chain for measuring their respective motions, a computer unit for multiplying the signal of one of the length pick-ups with the put-in rated transmission ratio of the transmission chain and for subtracting the multiplied signal from the signal of the other length pick-up, and also includes a device for subtracting with the proper prefix + or - the thus formed difference signal as correction value from the measured value of the measuring feeler.
REFERENCES:
patent: 3397459 (1968-08-01), Ehrhardt et al.
patent: 3741659 (1973-06-01), Jones, Jr.
patent: 3849891 (1974-11-01), Pratt et al.
patent: 3849892 (1974-11-01), Fabish et al.
patent: 3945126 (1976-03-01), Bloch
patent: 4062125 (1977-12-01), Maag
Bosch Manfred
Marquardt Richard
Stearns Richard R.
W. Ferd. Klingelnberg Sohne
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