Squareness test fixture

Details Squareness test fixture Squareness test fixture

1982-09-13

1984-09-25

Martin, Jr., William D.

Geometrical instruments

Area integrators

Electrical

33174Q, 33476, G01B 500

Patent

active

044728824

ABSTRACT:
A test fixture adapted to measure the squareness of springs, generally cylindrical objects or the like. Preferably the fixture includes a rigid, planar base adapted to be disposed upon a supporting surface, from which a rigid, calibrated test plate projects generally perpendicularly upwardly. The test plate includes a specially machined testing surface, adapted to contact springs to be tested, which springs can be conveniently supported upon the planar base. The face plate is configured so that springs may be slidingly moved about the base in physical contact with the face to determine their squareness by referring to calibrations provided in the test plate. The surface of the test fixture is described generally by the equation Z.sub.(x,y) =C.sub.1 y (tan C.sub.2 X+C.sub.3)+C.sub.4.

REFERENCES:
patent: 1148196 (1915-07-01), Simmons
patent: 1715405 (1929-06-01), Bull
patent: 3067518 (1962-12-01), Herman

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