Method and apparatus for dimensional gaging with fluid pressure

Details Method and apparatus for dimensional gaging with fluid pressure Method and apparatus for dimensional gaging with fluid pressure

1978-07-07

1980-02-12

Goldberg, Gerald

Measuring and testing

With fluid pressure

Dimension, shape, or size

G01B 1310

Patent

active

041877152

ABSTRACT:
A back pressure fluid gaging circuit for measuring dimensions of a workpiece. The gaging circuit (100) includes gage tooling (190) including at least one fluid jet (192) disposed to be directed at a surface (210) of the workpiece (200), with variations in the distance between the surface (210) and the tooling (190) providing a varying back pressure of the fluid which is measured by a gage (150) located intermediate the length of a conduit (170) connecting a source (110) of fluid under pressure with the tooling (190). First and second adjustable (variable) fluid passage restrictions (130, 140) in the conduit (170, are adjusted to provide an output within a range that can be displayed by the gage (150) for the particular tooling selected. One of the adjustable restrictions (130) is located along the conduit between the source (110) of pressurized fluid and the gage (150) and the other restrictions (140) between the gage (150) and the tooling (190). The use of two adjustable passage restrictions allows the use of a constant (non-varying) fluid pressure source, supplied by a fixed fluid pressure regulator (120).

REFERENCES:
patent: 2636380 (1953-04-01), Van Dorn
patent: 2706397 (1955-04-01), Byrkett
patent: 2795855 (1957-06-01), Worthen
patent: 2925692 (1960-02-01), Hitchner
patent: 3056280 (1962-10-01), Brewer
patent: 3178931 (1965-04-01), Kirk
patent: 3353402 (1967-11-01), Caligiuri
patent: 3621862 (1971-11-01), Wojtecki
patent: 3792605 (1974-02-01), Rabenau

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