Gantry-type jig

Details Gantry-type jig Gantry-type jig

1985-03-22

1986-07-01

Little, Willis

Geometrical instruments

Miscellaneous

Light direction

33503, 33559, G01B 502

Patent

active

045971820

ABSTRACT:
A gantry-type jig having two longitudinal beams and a traveling cross-rail, each composed of a load-bearing element and a positioning element. The varying load as governed by the position of a trolley is taken up fully, or to the major part, by the load-bearing elements. The positioning elements form a constant reference basis for measuring the deflection of the load-bearing elements by means of transducers. On the basis of the deflection measured, correcting values are established which are employed to change the level of the ram of the trolley or the level of the cross-rail.

REFERENCES:
patent: 3774311 (1973-11-01), Stemple
patent: 3840993 (1974-10-01), Shelton
patent: 4207680 (1980-06-01), Bell et al.
patent: 4525930 (1985-07-01), Bury

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