Geometrical instruments – Area integrators – Electrical
Patent
1974-04-03
1976-06-15
Aegerter, Richard E.
Geometrical instruments
Area integrators
Electrical
33147L, 33174L, 33174Q, 33178E, G01B 712
Patent
active
039627926
ABSTRACT:
A variable range gauge follower apparatus for measuring the diameter of work pieces comprising a pair of pivotable arms each having a contact at one end adapted to engage the surface of the work piece. Each of the arms has fixed to it for conjoint movement a segment member having an angular position Inductosyn at its circumferential edge. Associated with each Inductosyn is a magnet sensing head stationarily fixed so as to be able to sense the induced current as a function of the angular displacement of the segment. Means are provided for phase measurement of the two signals which when compared with a predetermined starting signal determines the angular change of the arms and thus the diameter of the work piece. The two arms are each mounted in a shaft journaled in a frame-like body and are coupled for conjoint rotation by a pair of meshing gears to establish an initial spacing or opening between the two arms. The gears are provided with means for their uncoupling during actual operation.
REFERENCES:
patent: 1599609 (1926-09-01), Damerell
patent: 3802087 (1974-04-01), Raiteri
patent: 3851396 (1974-12-01), Klabunde
Ruckl Vaclav
Stepanek Karel
Aegerter Richard E.
Little Willis
Vyzkumny ustav obrabechlich stroju a obrabeni
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