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

A method of correcting the overall distortion of structural plates after laser forming

A laser forming and structural plate technology, applied in the field of plate processing, can solve the problems of low forming efficiency, plate distortion, long aging forming cycle, etc., and achieve the effect of clear organization, reasonable strategy, improved effectiveness and yield rate

Active Publication Date: 2018-04-17
HARBIN INST OF TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The forming of lightweight structural panels mainly relies on traditional mechanical forming, aging forming, etc. The ribs of this type of plate are easy to break and fail under the traditional mechanical forming method. In addition, the springback phenomenon after forming makes the forming efficiency low. The cycle is long and the efficiency is low. Therefore, with the increasing application range of this kind of sheet metal, a rapid prototyping technology is urgently needed to meet the needs of the industry. Laser sheet metal forming technology is a kind of laser sheet metal forming technology because of its large forming flexibility. Good choice
[0004] The use of laser sheet forming technology to form lightweight structural panels is different from laser forming of ordinary flat panels. It is necessary to comprehensively consider the structural characteristics of lightweight structural panels. The phenomenon of overall distortion and deformation makes the sheet unable to continue forming. Therefore, for the overall distortion and deformation of lightweight structural plates after laser forming, it is urgent to provide a correction method to correct the overall distortion and deformation of lightweight structures after laser forming plate, thus ensuring the subsequent continuous forming process of lightweight structural plates

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
  • A method of correcting the overall distortion of structural plates after laser forming
  • A method of correcting the overall distortion of structural plates after laser forming
  • A method of correcting the overall distortion of structural plates after laser forming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The method for correcting the overall distortion of the lightweight structural panel as described above, the difference of this embodiment is that, as figure 2 As shown, the method for correcting the overall distortion of lightweight structural plates after laser forming, the specific implementation steps are as follows:

[0030] Step 1: Fix the overall distorted lightweight structural plate on the worktable with a fixture, using the same fixing method as before laser forming of the lightweight structural plate;

[0031] Step 2: Use a support device to support the two ends of the twisted end of the lightweight structural plate that is distorted and deformed as a whole; and preliminarily correct the plate;

[0032] Step 3: Measure the deformation of different parts of the scanned line of the lightweight structural plate after correction;

[0033] Step 4: Classify the deformation of the lightweight structural panel according to the measurement results: (1) The bending d...

Embodiment 2

[0038] As described above, the method for correcting the overall distortion of the lightweight structural plate, the difference of this embodiment is that in step 4, the deformation of different parts of the corrected scanning line of the lightweight structural plate is measured, and the measurement method can be three-dimensional Scanners, laser displacement meters and other equipment.

Embodiment 3

[0040] As described above, the method for correcting the overall distortion of the lightweight structural plate, the difference of this embodiment is that the forming experiment is carried out on the lightweight structure with the overall size of 696mm×400mm, the surface of the plate is coated with graphite, and the forming method adopted The parameters are: laser power 1100W, scanning speed 20mm / s, and spot diameter 12mm. In the grid unit areas 90mm, 126mm, and 162mm away from the free end of the plate, the scanning strategy of constant speed, constant power, and constant spot size is used to scan continuously at each scanning position. After scanning five times, the overall distortion of the lightweight structural panel occurred after scanning. After correcting the overall distortion of the panel with a support device, the deformation of the panel was measured. The measurement device was carried out by a Canadian CREAFORM handheld 3D scanner. As a result, the bending deformat...

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 provides a method for correcting overall distorsion of a structural plate after laser forming. Aiming at overall distorsion deformation phenomenon of a light structural plate after laser forming, after a support device is used for correcting the light structural plate with overall distorsion deformation, the deformation of the corrected light structural plate is measured, the bending angles of the light structural plate in different positions on a scanning line path are measured, and subsequent correcting measures of the light structural plate are determined according to the deformation conditions of reinforcing rib parts in different positions. The correcting method corrects the light structural plate with overall distorsion deformation phenomenon after laser forming, so that the subsequent progressive forming process of the light structural plate is guaranteed, and the effectiveness and the yield of laser forming of the light structural plate are improved.

Description

technical field [0001] The invention relates to the field of plate processing, in particular to a method for correcting the overall distortion of a structural plate after laser forming. Background technique [0002] Sheet metal forming technology is widely used in modern aviation, aerospace, shipbuilding, automobile and other industries, and sheet metal parts account for a large proportion. Therefore, it is necessary to conduct in-depth research on sheet metal forming technology, master its forming mechanism and improve forming accuracy, so as to better Applied in practice; many scholars have carried out related research in this area and achieved many research results. Laser sheet forming technology uses laser beams to irradiate the surface of the metal sheet to generate a strong temperature gradient in the thickness direction of the metal sheet, induce uneven thermal stress, and then generate a bending moment at the cross-section of the sheet to act on the sheet, and at the...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B21D1/00
CPCB21D1/00
Inventor 王扬付守冲杨立军张宏志
Owner HARBIN INST OF TECH
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