Device and method of dynamic-static calibration for laser tracker

A laser tracker and calibration device technology, applied in the direction of using optical devices, measuring devices, instruments, etc., can solve the problems of cumbersome calibration process, manufacturing error, artificial installation, error, etc., achieve high resolution and precision, improve calibration accuracy, high resolution effects

Active Publication Date: 2019-05-17
XI AN JIAOTONG UNIV
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Problems solved by technology

[0004] In the current calibration method, in the calibration process, the target and the target coordinates use standard devices, and their own errors are not measured during the calibration process. However, in practical applications, due to device manufacturing errors and human installation errors etc., will affect the final calibration accuracy of the laser tracker
When performing dynamic speed measurement, the existing calibration method needs to use different components from static measurement, and the calibration environment needs to be rearranged, making the calibration process more cumbersome, and it is impossible to complete dynamic and static calibration at one time

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  • Device and method of dynamic-static calibration for laser tracker

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[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative import...

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Abstract

The invention discloses a device and method of dynamic-static calibration for a laser tracker. The device of the dynamic-static calibration for the laser tracker takes a high precision two dimensionalgrating as a calibration benchmark, and the problems that the precision is insufficient and static calibration is single in traditional target ball type calibration are solved. A probe moves on the two dimensional grating, the characteristics of high precision and high definition of two dimensional grating measurement are utilized, thus the moving distance of a drone placed on a sliding block ismeasured, and an error is controlled in the range of 10nm-100nm, meanwhile the drone is also measured through the laser tracker, data of the two measurements are compared, thus the precision of calibration can be improved, a dynamic speed, a dynamic speed limit and a circular orbit of the laser tracker can further be calibrated and measured by controlling the moving speed and the moving track of the probe, and the device of the dynamic-static calibration for the laser tracker can be applied to the conventional dynamic-static calibration of the laser tracker.

Description

technical field [0001] The invention belongs to the technical field of precision measurement, and in particular relates to a dynamic and static calibration device and a dynamic and static calibration method for a laser tracker. Background technique [0002] In recent years, with the increase of some large-scale workpieces and special engineering projects, the installation and positioning accuracy of workpieces has become higher and higher, and sub-millimeter positioning accuracy is generally required. Ordinary measuring instruments such as theodolite, total station, etc. have been difficult to meet the positioning measurement needs of the above projects. Fortunately, thanks to the wide application of large-scale three-dimensional coordinate measuring machines - laser trackers in various fields in China. The laser tracker is a large-scale measuring instrument with the highest measurement accuracy in the current industrial measurement system. It can track the moving target in ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B21/04
Inventor 叶国永刘红忠李映江史永胜雷彪韩伟亮
Owner XI AN JIAOTONG UNIV
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