Geometrical instruments – Area integrators – Electrical
Patent
1975-08-21
1978-01-31
Aegerter, Richard E.
Geometrical instruments
Area integrators
Electrical
33174L, G01B 734
Patent
active
040707628
ABSTRACT:
A roundness measuring instrument of the type having a workpiece table and a pick-up carried on a pick-up mount which is radially adjustable to move the pick-up radially with respect to a fixed axis about which the table is rotatable, in which there is provided a displacement transducer sensitive to the movement of the pick-up mount in the radial direction. A device for summing the signals from the displacement transducer and from the pick-up is used to provide a wide range signal usable in metrological determinations on workpieces, such as determinations of radius and separation of two plane faces. A computer for calculating the value of a predetermined algorithm may also be provided to obviate the necessity for centering either a reference body or the workpiece with respect to the axis of rotation of the table.
REFERENCES:
patent: 3110112 (1963-11-01), Dalgleish
patent: 3499227 (1970-03-01), Krause et al.
patent: 3581402 (1971-06-01), London et al.
patent: 3826011 (1974-07-01), D'Aniello
Aegerter Richard E.
Little W.
The Rank Organisation Limited
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