Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multi-substrate combining detection method based on laser measurement

A detection method and laser measurement technology, applied in the field of testing, can solve problems such as inability to adjust, large measurement error, difficult measurement, etc., and achieve the effects of convenient translation and rotation, improved measurement accuracy, and direct presentation method.

Active Publication Date: 2013-09-11
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
View PDF5 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The disadvantages of method 1 and method 2 are: they cannot be adjusted under the guidance of the adjustment amount; the measurement error is large; the operation is cumbersome; the labor intensity is high; the efficiency is low
For a large base surface, it is necessary to make a judgment through repeated adjustments and observations, which is very difficult to measure
Some non-continuous large bases are not even possible
[0009] The disadvantages of method three are: the calculation of theoretical coordinates is complex, the workload is large and errors are prone to occur; the measurement accuracy is low; the operation is cumbersome; long-term on-site measurement and poor equipment stability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-substrate combining detection method based on laser measurement
  • Multi-substrate combining detection method based on laser measurement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: figure 1 Shown: substrate (A1), ... [A99]; laser tracker (1); target ball (2); substrate mounting bracket (3); wall (4). Combine and detect the horizontal datum plane of a main structure. The target main body length L is 40m, which is composed of 99 substrates. Set up the LTD500 laser tracker (1) at the measurement station, and the static coordinate accuracy (2δ) of the laser tracker is ±10μm / m. Pre-lay the qualified substrate [A1] to substrate [A99] on the substrate support frame. The substrates are distributed in odd and even columns. It is agreed that the positioning holes on the substrate are numbered counterclockwise. The three positioning holes on the substrate [A1] numbered P 1-1 ,P 1-2 ,P 1-3 , determine the target offset and coordinate origin position, use the CATIA software to obtain the theoretical coordinates with the offset of the center of the target ball on the digital model, and import the theoretical coordinates into the application proc...

Embodiment 2： pic 2：〔A1〕……〔A10〕；〔1〕；〔2〕、〔3〕。 test 。 and 。 and ，。 specific Embodiment approach

[0040] Example 2: figure 2 Shown: substrate (A1) ... [A10]; laser tracker (1); target ball (2), substrate mounting bracket (3). Assemble and install the installation datum plane of an aircraft wing control test bench. The measured plane is characterized in that the reference plane is in a compound angle relationship with each axis of the aircraft coordinate system. Therefore, it is necessary to use a laser tracker to initially install and debug the downturn and sweep angles of the mounting surface of the stand in the aircraft coordinate system, and then solve the problem of mounting flatness. The specific implementation is as follows:

[0041] The laser tracker (1) is set up at the root end of the wing control test bench, so that the laser beam emitted by it can be directly projected onto the surface of the measured object. Measure P in the aircraft coordinate system 1-1 ,P 1-2 ,P 10-1 point, the plane formed by three points is solved in the aircraft coordinate system f...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of measurement, and particularly relates to a multi-substrate combining detection method based on laser measurement. A planeness combining detection method is improved into digital detection instructed by laser from traditional analog quantity detection; a laser tracker application processor visually displays adjustment amount; an adjustment amount displaying mode is direct, real-time and accurate; measuring points on substrates locate randomly; moving tracks of target ball measurement are random; contact area of a target ball and the planes of the substrates is small, number of collection points is large, and planeness of the combined substrates can be more comprehensively, vividly and accurately displayed as compared with that by traditional methods; translation and rotation of a coordinate system are facilitated, and origin of coordinates can be accurately defined to any position within the space of a measurement range; combining a coplane by multiple substrates, and in particular combining detection of any inclination angles and large planes are achieved fundamentally. With the multi-substrate combining detection method, operational procedures are simplified, measuring efficiency is improved by almost two times, and measuring accuracy is improved by more than three times.

Description

technical field [0001] The invention belongs to the technical field of testing, in particular to a multi-substrate splicing detection method based on laser measurement. Background technique [0002] In scientific research and production in the aerospace field, it is necessary to establish some high-accuracy large-scale datums, which are horizontal or inclined in space. Due to the high cost of producing large-scale substrate materials, difficulties in installation and transportation, difficult processing (some even cannot be processed), and difficulty in deformation repair, etc., multiple substrates are usually combined to form a large reference plane. [0003] The existing multi-substrate coplanar stitching detection method is: [0004] Method 1: Use a knife-edge ruler, straighten steel wire, etc. to establish a physical benchmark, and directly obtain the flatness by estimating the "light gap" or inserting a feeler gauge. [0005] Method 2: Use a spirit level, spirit level...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01B11/30
Inventor 王海英唐武忠韩清华党艳虎卞学红
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com