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Turntable intersection degree and verticality measurement device and method

A measurement device and measurement method technology, applied in the direction of measurement devices, optical devices, instruments, etc., can solve the problems of disassembly and assembly errors, installation errors, complicated methods, etc., achieve good anti-interference and stability, avoid contact deformation, Optimizing the effect of the measurement process

Inactive Publication Date: 2019-07-26
SHANGHAI INST OF ELECTROMECHANICAL ENG
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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.

Method used

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  • Turntable intersection degree and verticality measurement device and method

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Embodiment approach

[0068] The invention is applied to a five-axis turntable intersection degree and perpendicularity on-site measuring device based on the cat's eye dual-frequency laser interference phase measurement technology. Considering that the five-axis center of the turntable is at the same position, the cat’s-eye reflector is designed as a common target for five-axis measurement. It is fixed at the center of the axis by a fixture, and the five-axis intersection and perpendicularity measurement can be continuously realized without disassembling the turntable.

[0069] Using a dual-frequency laser interferometric phase measurement device based on cat's eye, it consists of a dual-frequency laser head 100, a beam splitter with 30% reflectivity, a beam splitter with 50% reflectance, a three-way interference optical path assembly 300, a cat's eye reflector, a phase sensor and a cat's eye Installation fixtures and other components. The dual-frequency laser head simultaneously generates two line...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/26G01C25/00
CPCG01B11/26G01C25/005
Inventor 李艳红柴娟芳赵吕懿朱炜陈强华荆娜沈涛张琰冯晓晨田义杨扬
Owner SHANGHAI INST OF ELECTROMECHANICAL ENG
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