Stepped end-gauge block apparatus

Details Stepped end-gauge block apparatus Stepped end-gauge block apparatus

1983-05-19

1984-05-01

Haroian, Harry N.

Geometrical instruments

Area integrators

Electrical

33174H, G01C 2500

Patent

active

044452764

ABSTRACT:
The invention relates to a crenellated, stepped end-gauge with an elongate supporting body and a plurality of end-gauge blocks which are secured thereon in a straight line. Stepped end-gauges of this type are used for checking multi-coordinate metrology equipment. In order to eliminate uncontrollable long-term influences affecting the dimensional accuracy of stepped end-gauges of this type, and in order to confer a definite temperature behavior on the stepped end-gauge, the upper surface region of the supporting body is provided with a groove which runs longitudinally and is preferably V-shaped. The eng-gauge blocks, which are preferably designed in the form of cylinders, are individually secured, spaced one behind another in the bottom of the groove. The groove expediently projects into the supporting body to a depth such that the central axis of the end-gauge blocks is axially coincident with the neutral bending axis or fiber of the supporting body. This arrangement prevents variations in the distances between the surfaces which are to be sensed, due to sagging of the stepped end-gauge under its own weight, or to deformations occurring as a result of other forces.

REFERENCES:
patent: 2831256 (1958-04-01), Werle
patent: 4364182 (1982-12-01), Jones

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