High-precision measurement device and measurement method for angle of pitch

A technology of measuring device and pitch axis, which is applied in the directions of measuring device, measuring angle, surveying and mapping, and navigation, etc., can solve the problem that the accuracy level operation convenience cannot meet the requirements of pitch angle measurement of two-dimensional turntable, and the difficulty of high-precision measurement of two-dimensional turntable, The detection method cannot be realized, etc., to achieve the effect of automatic testing and result recording and output, simple and fast installation and placement of instruments, and easy operation.

Inactive Publication Date: 2016-04-13
BEIJING DONGFANG MEASUREMENT & TEST INST
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  • Application Information

AI Technical Summary

Problems solved by technology

It is more difficult to measure the pitch angle of the two-dimensional turntable with high precision, especially for the case where the pitch axis body of the turntable itself is invisible and there is no reserved position for installing the polyhedral prism
The current general method of measuring the pitch angle is to use an optical inclinometer to place it on the workbench for measurement. The most accurate model of the common optical inclinometer at present has a maximum allowable error of about 20", which is more and more accurate for the current two-dimensional turntable. Due to the high measurement requirements, the optical inclinometer cannot meet the current measurement requirements of the pitch angle of the two-dimensional turntable in terms of accuracy level or operation convenience.
In addition, even if the measured pitch axis can be equipped with polyhedral prisms, limited by the current maximum number of faces of polyhedral prisms is only 36 faces (the angle between the normals of the faces of the polyhedral prisms is 10°), the pitch angle of the turntable The commonly used and highly demanding detection of rotation accuracy in a small range (±10°) cannot be achieved by using the traditional autocollimator plus polygonal prism detection method; if an electronic level or other sensor-type goniometers for measuring pitch angles are used For detection, due to the limitation of the measuring range, the measurement accuracy of the full stroke of the angle measurement often cannot meet the measurement requirements of the high-precision two-dimensional turntable

Method used

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  • High-precision measurement device and measurement method for angle of pitch
  • High-precision measurement device and measurement method for angle of pitch
  • High-precision measurement device and measurement method for angle of pitch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In this scheme, the pitch angle high-precision measuring device is composed of a horizontal multi-tooth indexing platform and a high-precision electronic level, see figure 1 . The two-dimensional turntable base 1 is fixed with a high-precision electronic level 2 for additional compensation, and the two-dimensional turntable pitch axis moving table 3 is axially connected to the two-dimensional turntable base 1 . The horizontal multi-tooth indexing table 4 has a horizontal multi-tooth indexing table base 6, and the high-precision electronic level 5 is located in the center of the multi-tooth indexing table.

[0034] When measuring the pitch angle of the turntable, proceed as follows:

[0035] 1. Set the pitch angle of the two-dimensional turntable to zero, so that the plane of the turntable is horizontal.

[0036] 2. Return the position of the horizontal multi-tooth indexing table 4 to zero, and the high-precision electronic level 5 is reliably fixed on the center of th...

Embodiment 2

[0044] Measuring system composed of bottom-horizontal multi-tooth indexing table, reflector and high-precision optoelectronic collimator, see image 3 . The two-dimensional turntable base 1 is fixed with a high-precision electronic level 2 for additional compensation, and the two-dimensional turntable pitch axis moving table 3 is axially connected to the two-dimensional turntable base 1 . The horizontal multi-tooth indexing table 4 has a horizontal multi-tooth indexing table base 6, and the plane mirror 7 is located in the center of the multi-tooth indexing table. The high-precision optoelectronic autocollimator 8 is firmly and reliably placed on the side of the same foundation as the two-dimensional turntable base 1 .

[0045] When measuring the pitch angle of the turntable, proceed as follows:

[0046] 1. Set the pitch angle of the two-dimensional turntable to zero, so that the plane of the turntable is horizontal.

[0047] 2. Return the position 4 of the horizontal multi-t...

Embodiment 3

[0055] can also be used as Figure 5 Devices shown: 1. Two-dimensional turntable base; 2. High-precision electronic level for additional compensation; 3. Two-dimensional turntable pitch axis moving table; 4. Horizontal multi-tooth indexing table; 5. High-precision electronic level; 6 , Horizontal multi-tooth indexing table base; 9, electronic level meter pitch angle fine-tuning mechanism; 10, magnetic fixing device; 11, electric control system.

[0056] Its measuring method is the same as in Example 1.

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Abstract

The invention provides a device for measuring the angle of pitch of a two-dimensional high-precision turntable and other high-precision angles of pitch and a measurement method utilizing the measurement device. A horizontal multitooth indexing table/ horizontal angle encoder is combined with an electronic level meter, or the horizontal multitooth indexing table/ horizontal angle encoder is combined with a plane mirror and an auto-collimation instrument to measure the labeled error of the angle of pitch of the two-dimensional high-precision turntable. The measurement device and measurement method have the advantages that the measurement device is convenient to use and compact in structure, it is convenient to achieve automated testing, and meanwhile high measurement precision and stability are achieved.

Description

technical field [0001] The invention belongs to the field of pitch angle measurement, and in particular relates to the measurement of the pitch angle of a two-dimensional high-precision turntable and the measurement of other high-precision pitch angles. [0002] The measuring method and measuring device have broad application prospects in the fields of pitch axis measurement of two-dimensional precision turntables and instruments and equipment that require high-precision measurement of pitch angles. The measuring instruments using this structure are easy to use, compact in structure, and easy to realize automatic testing. At the same time, it has high measurement accuracy and stability. Background technique [0003] Two-dimensional high-precision turntables are widely used in aviation, aerospace, machinery manufacturing, ship heavy industry and other fields. They are used as a carrier to control products or product components to rotate or pitch. link is crucial. The workin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C1/00
CPCG01C1/00
Inventor 张于王磊张明志眭瑞涛马遥宋德强李振
Owner BEIJING DONGFANG MEASUREMENT & TEST INST
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