Locator and fixture assembly

Details Locator and fixture assembly Locator and fixture assembly

1986-10-31

1987-09-01

Stearns, Richard R.

Geometrical instruments

Gauge

Pipe layout or fitting

33562, G01B 314, G01B 520

Patent

active

046898913

ABSTRACT:
A fixture assembly for inspecting a formed hollow tube includes a base defining an upper working surface in which is formed an envelope groove having a generally U-shaped cross-section for defining an error envelope for the tube. A locator block is positioned at either end of the error groove and includes a locator pin adapted to engage a free end of the tube for defining a central position in the envelope groove. Each locator block has an internal cavity formed therein for retaining a helical spring through which the locator pin extends, the spring being trapped between a wall of the cavity and a radially outwardly extending flange formed on the pin for biasing the pin toward the end of the envelope groove. The pin can include indicia for cooperating with the locator block to indicate the position of the free end of the tube and the end of the locator pin can be sized to provide an indication of the inside diameter of the free end of the tube.

REFERENCES:
patent: 24450 (1859-06-01), Emery
patent: 2180253 (1939-11-01), Moore
patent: 2477524 (1949-07-01), Oswald et al.
patent: 2874456 (1959-02-01), Weidel
patent: 3626507 (1971-12-01), Hawkins
patent: 4122608 (1978-10-01), Hopf
patent: 4593476 (1986-06-01), Clark et al.
patent: 4604813 (1986-08-01), Kawanami et al.

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