Automatic measuring device and method for inner wall of cavity part

A technology for measuring devices and components, applied in measuring devices, optical devices, instruments, etc., can solve problems such as measurement difficulties, limited internal space of cavity parts, difficulty in sticking and removing marking points, etc., and achieve the effect of simplifying calculations

Inactive Publication Date: 2020-08-14
CHENGDU AIRCRAFT INDUSTRY GROUP
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned non-contact optical measurement method cannot obtain complete three-dimensional data on the surface of the measured object through a single measurement. When performing multiple measurements, it is often necessary to carry out coordinate systems of

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
  • Automatic measuring device and method for inner wall of cavity part
  • Automatic measuring device and method for inner wall of cavity part
  • Automatic measuring device and method for inner wall of cavity part

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1:

[0032] The main structure of this embodiment, such as figure 1 As shown, it includes a screwing mechanism and a screw 5, the screwing mechanism is threadedly connected with the screw 5, one end of the screwing mechanism is provided with a driver 1 and the other end is fixedly connected with a support frame 7, the driver 1 can drive the screwing mechanism Rotate on the screw 5 to move it along the axial direction of the screw 5. A visual measuring mechanism 6 is arranged at the lower part of the precession mechanism; the driver 1 is also equipped with an encoder 2, the encoder 2 and the visual measuring mechanism 6 Electrically connected, the encoder 2 synchronously reflects the rotation of the precession mechanism on the lead screw, and outputs a synchronous pulse signal to the visual measurement mechanism 6, so that the visual measurement mechanism 6 performs visual measurement synchronously.

[0033] Among them, the structure of the tightening mechanism is suc...

Example Embodiment

[0045] Example 2:

[0046] This embodiment further defines the visual measurement device on the basis of the above-mentioned embodiment. The visual measurement device includes a projection device and a camera, and their relative position relationship is known after calibration. Depending on the projection device, the visual measurement device can be a point measurement , Line measurement and area measurement device. The other parts of this embodiment are the same as the foregoing embodiment, and will not be repeated.

[0047] It can be understood that the structure of the measuring device according to an embodiment of the present invention, for example, the working principle and working process of components such as the camera 63 and the projection device 62 are all in the prior art, and are well known to those skilled in the art, and will not be here. Describe in detail.

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 discloses an automatic measuring device for the inner wall of a cavity part. The device comprises a precession mechanism and a lead screw. The precession mechanism is in threaded connection with the lead screw, one end of the precession mechanism is provided with a driver, the other end of the precession mechanism is fixedly connected with a supporting frame, the driver can drive theprecession mechanism to rotate on the lead screw to move in an axial direction of the lead screw, and a vision measuring mechanism is arranged on the lower portion of the precession mechanism; and the driver is further provided with an encoder, and the encoder is electrically connected with the visual measuring mechanism. The specific method for measuring by using the measuring device comprises the following steps: step one, setting an initial coordinate system; step two, collecting images and calculating data; and step 3, carrying out data conversion. According to the measuring device and the measuring method, the lead screw serves as the positioning reference, mark points do not need to be pasted to the measured object in the measuring process, the mark points do not need to be removedafter measurement is completed, calculation of coordinate conversion is simplified, and three-dimensional measurement can be conducted on the inner wall of the cavity part without manual intervention.

Description

technical field [0001] The invention relates to the technical field of part measurement, in particular to an automatic measurement device and a measurement method for the inner wall of a cavity type part. Background technique [0002] The internal space of cavity parts is limited, and it is inconvenient to measure with traditional coordinate measuring machines. In order to solve the detection of the inner wall size of cavity parts, non-contact optical measurement methods have appeared in the prior art, such as line laser scanning measurement methods or surface structured light scanning measurement methods. [0003] The method of line laser scanning to measure objects is to project a beam of high-brightness line laser onto the surface of the object, and use a camera to photograph the surface of the object to obtain the surface image of the object including the laser line image, and extract the center of the laser line image through image processing methods According to the p...

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): G01B11/24
CPCG01B11/2433
Inventor 韩利亚袁胜陈洪宇
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap