Turntable intersection degree and verticality measurement device and method

Abstract

The invention provides a turntable intersection degree and verticality measuring device and method. The turntable intersection degree and verticality measuring method includes the following steps thatlight is split, specifically, the total dual-frequency light is split into multi-channel dual-frequency sub-light; an interference light path is formed, specifically, a turntable is measured with thedual-frequency sub-light to obtain reference light and a measuring interference light path; and the turntable is detected, specifically, according to the phase difference between the reference lightand the interference light path, displacement measurement signals are obtained, and according to the displacement measurement signals corresponding to multiple interference light paths, the turntableintersection degree and/or verticality are obtained. According to the turntable intersection degree and verticality measuring device and method, a common target is used, the measurement process of a multi-shaft turntable is greatly optimized, and installation and disassembly of the target does not require disassembly of the turntable.

Description

technical field [0001] The invention relates to the field of turntable measurement, in particular to a device and method for measuring the degree of intersection and perpendicularity of a turntable, in particular to an on-site measuring device and method for the degree of intersection and perpendicularity of a five-axis turntable. Background technique [0002] The mechanical precision of the turntable determines its comprehensive precision and overall performance index. Regardless of the type of turntable, its static indicators include shafting intersection, perpendicularity, alignment error, etc. In the development of the turntable, there are technical index requirements for its verticality and intersection, but my country's national military standard GJB1801-93 "Test Methods for Main Performance of Inertial Technology Test Equipment" has a detection method for verticality, but not for intersection degree of detection method. The national military standard GJB1801-93 "Test...

AI Technical Summary

Problems solved by technology

[0005] In summary, the existing calibration methods for the degree of intersection and perpendicularity of the turntable have the following limitations: First, the measuring device must be installed on the shaft system during measurement, and the turntable often needs to be disassembled, which is not only complicated, but also New errors may be introduced during the disassembly process, that is, it is difficult to achieve in-situ measurement; second, it is mainly for single-axis analysis. When multi-axis measurement is performed, the method is too complicated, and it is easy to introduce too many installation errors. Some methods Although shafting relationship measurement can be solved, continuous measurement cannot be achieved

Therefore, it is difficult to test and calibrate the turntable, especially the intersection and perpendicularity of the five-axis turntable.

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