TEST BENCH Russian patent published in 2013 - IPC G01C25/00 

FIELD: instrument making.

SUBSTANCE: operating chamber of the bench, where an intermediate accessory is arranged with an installed tested instrument (instruments), is structurally provided with higher stiffness both around the axis of its rotation and around the transverse axis, i.e. the horizontal axis perpendicular to the axis of rotation of the operating chamber. The operating chamber will have these properties, if it is made in the form of a cylindrical drum, the axis of symmetry of which matches the axis of its rotation with simultaneous performance of certain requirements dictated by the purpose of the test bench. To meet all the requirements, the operating chamber is made as composite, comprising a hollow box with a stiff link inside its cavity installed perpendicularly to the axis of box rotation, and covers in the form of hollow cylindrical segments with partitions perpendicular to the axis of frame rotation, which together with the frame link form two cavities of the operating chamber, one of which is equipped with heat insulation along their inner surface, and the second one - with radial holes arranged in the body of the frame and covers, where a mirror measurement tool is placed, comprising a polyhedral angle-measurement prism, aligned with its end plane perpendicularly to the axis of operating chamber rotation and optically interacting with its faces to the first autocollimator, and a reference mirror, the working plane of which is aligned perpendicularly to the axis of working chamber rotation and optically interacts with the second autocollimator. At the same time the polyhedral prism and the reference mirror are rigidly fixed with an intermediate accessory.

EFFECT: increased stability of setting and integrity of angular positions of an orientation object.

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