High precision electronic digital measurement system wound on co

Details High precision electronic digital measurement system wound on co High precision electronic digital measurement system wound on co

1984-10-22

1985-08-06

Ward, Robert S.

Geometrical instruments

Area integrators

Electrical

33125R, G01B 702

Patent

active

045327092

ABSTRACT:
A system for ascertaining dimensions which comprises a measuring module and several gage extenders which can be used either alone or in combination with gaging blocks. The measuring module includes a drum member rotatably mounted on a support and at least one measuring member operably associated with the drum member. At least one end of the measuring member extends from the drum such that for rotational movement of the drum member in a first direction the free end of the measuring member is drawn up onto the drum and for rotational movement in a second direction the free end of the measuring member is played out from the drum member. The drum is rotated at a constant torque and the rotational movement of the drum is transmitted to a rotational position transducer. The rotational position transducer provides an output signal which is used in part to generate an electronic readout reflective of the movement of the measuring member. The gage extenders consist of elongated members which can be used individually with the measuring module or in combinations of two or more gaging members with the measuring module. The gaging members are of a predetermined length. The measuring system consisting of the measuring module and gaging members can be used in combination with gaging blocks for the purpose of measuring inside dimensions of workpieces.

REFERENCES:
patent: 3526890 (1970-09-01), Malina et al.
patent: 3566477 (1971-03-01), Williams
patent: 4057904 (1977-11-01), Vrabel et al.
patent: 4186490 (1980-02-01), Quenot

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