Multi-link trapezoid hexahedron standard instrument

Abstract

The invention discloses a multi-link trapezoid hexahedron standard instrument, and belongs to the field of the geometric quantity metering. The standard instrument comprises a main body support frameformed by mutually positioning and cementing link units and corresponding support units; the standard instrument further comprises a photogrammetric target point and encoding point on each link unit,and a standard sphere, a reflector or a photogrammetric hemisphere on each support unit; the photogrammetric target points and the encoding points are arranged on all link units, a user is unnecessaryto manually arrange the target points and the encoding points before the use, the measurement efficiency is improved, the standard instrument is more suitable for the use of the photogrammetric system. All link units are made of carbon fiber materials, the entire structure strength is improved in the premise of relieving the entire structure weight, and the convenience is improved. By optimizingthe entire structure of the multi-link trapezoid hexahedron standard instrument, arranging the encoding point and the target point on the single link, and arranging a standard sphere magnetic target on each support seat of the standard instrument, the use portability of the hexahedron standard instrument and the universality in multiple measurement instruments are improved, and the one-station comprehensive observation is realized.

Description

technical field [0001] The invention relates to the field of geometric quantity measurement, in particular to a multi-rod trapezoidal hexahedron standard. Background technique [0002] Due to its structural stability and good symmetry, the polyhedral structure is widely used in the fields of aviation, aerospace and metrology and calibration. A polyhedron is a spatial structure formed by combining multiple polygons. Polyhedra are divided into regular polyhedra and regular polyhedra. The geometric feature of a regular polyhedron is that all faces are regular polygons, and the included angles and edge lengths of each face are equal. There are various forms of regular polyhedra, and the basic feature is that the regular polyhedron is formed by truncating a part of the length and corners of the edges. There are various structures of polyhedrons, such as single rod type, truss type, grid type, etc., and each structure has its own characteristics. [0003] The main structure of...

AI Technical Summary

Problems solved by technology

[0008] (1) When the regular hexahedron standard is in use, it cannot measure the parameters of eight vertices at the same time, and it needs multiple transfer stations to measure;

[0009] (2) The regular hexahedron standard produced by the existing manufacturers cannot be applied to the integrated measurement of various measuring equipment;

[0010] (3) The regular hexahedron standard produced by the existing manufacturers is a detachable structure, and the parameter reproducibility is poor

Images