Ball type measuring prism

Abstract

The invention provides a spherical measuring prism with convenient adjustment and difficult-changed position of a glass pyramid. The spherical measuring prism comprises a sphere. A through hole penetrating through the sphere is opened on the sphere and the ball center of the sphere is on the axle wire of the through hole. The through hole is internally provided with a rear cover, a positioning corner, the glass pyramid and a front cover. The rear cover is installed in the through hole of the sphere and the glass pyramid is installed on the positioning corner while the front cover is installedin the through hole. The spherical measuring prism of the invention can drive the glass pyramid to move backwards by installing the front cover so as to ensure that three mutually vertical surfaces on the glass pyramid are closely contacted with the positioning corner, and accurately cause the superposition of the reflection center of the glass pyramid and the ball center of the sphere by controlling the working accuracy of components and back and forth adjustment when in installation, therefore, the position of the glass pyramid after installation is not easy to change.

Description

Spherical Measuring Prisms technical field The invention relates to a measuring prism, in particular to a spherical measuring prism. Background technique In the field of surveying and mapping, the three-dimensional coordinates of the measuring prism can be obtained through the measurement of the measuring prism by the total station, so that the spatial position of the measured object can be indirectly reflected according to the fixed relationship between the placement position of the measuring prism and the measured object. Therefore, the accuracy of the measuring prism directly affects the final measurement accuracy. The measuring prism is a glass pyramid with 3 mutually perpendicular faces and 1 cutting face, and the 3 mutually perpendicular faces intersect to form a pyramid. The three mutually perpendicular surfaces are surface-treated with a mirror-making process, so that the interior becomes a reflective mirror surface, so that no matter what angle the incident ligh...

AI Technical Summary

Problems solved by technology

The disadvantage is that it is difficult to adjust the position of the mounting surface, the position of the glass pyramid fixed by silica gel is easy to change again, and the consistency of each spherical measuring prism after batch processing is not easy to control

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