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

A peen forming method for a ribbed structure

A technology for shot peening and structural parts, applied in the field of shot peening, can solve the problems of deflection profile, instability, torsion, etc., and achieve the effect of increasing the amount of shot peening deformation and improving the fatigue life.

Active Publication Date: 2009-09-16
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
View PDF0 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the bending forming of ribbed structural parts, at present, the forming methods of press bending or roll bending are mainly used. Bending also creates problems such as torsion, deflection, and profile distortion

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 peen forming method for a ribbed structure
  • A peen forming method for a ribbed structure
  • A peen forming method for a ribbed structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The ribbed structural parts are formed by shot blasting to form convex bending deformation along the direction of the ribs. The material is aluminum alloy 2024T351, the target curvature radius is 2500mm, the height of the ribs is 50mm, the thickness of the wall plate is 10mm, the thickness of the ribs is 6mm, and the width of the wall plate is 90mm The material shot peening method is as follows:

[0026] 1) Determine the position of the neutral axis, divide the cross-section of the ribbed structural member into i figures, and use the centroid coordinate formula for calculating the cross-section figures in mechanics of materials y - = Σ A i y ‾ i Σ A i Determine the neutral...

Embodiment 2

[0029] Shot-peening formed ribbed structural parts to form concave bending deformation along the direction of the ribs. The material is aluminum alloy 2024T351, the target curvature radius is 4000mm, the height of the ribs is 56mm, the thickness of the wall plate is 4mm, the thickness of the ribs is 4mm, and the width of the wall plate is 70mm The forming method is as follows:

[0030] 1) Determine the neutral axis position, y - = Σ A i y ‾ i Σ A i = 70 × 4 × 2 + 56 × 4 × 32 ...

Embodiment 3

[0033] Shot-peening formed the ribbed structural part to form a convex bending deformation along the direction of the rib, and the overall shape of the ribbed structural part is " "The material is aluminum alloy 2024T351, the target radius of curvature is 2000mm, the rib height is 45mm, the wall thickness is 9mm, the rib thickness is 8mm, the rib top width is 20mm, the rib top thickness is 6mm, and the wall panel width is 85mm. , the forming method is as follows:

[0034] 1) Determine the position of the neutral axis, divide the cross-section of the ribbed structural member into i figures, and use the centroid coordinate formula for calculating the cross-section figures in mechanics of materials y - = Σ A i y ‾ i Σ A ...

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 peen forming technology, which relates to a peen forming method for a ribbed structure. The method comprises the following steps: first, the section of the ribbed structure is calculated by the areal coordinate formula used for calculating section graphic in material mechanics for determining the position of a neutral axis of the ribbed structure section; and then the peen area is determined by the exterior of the ribbed structure. When the required bending deformation amount of the ribbed structure is relatively large, the ribbed structure can be put on a pre-stressed fixture, elastic pre-bending force is applied to the ribbed structure along the direction of the rib, and then peen forming can be conducted. The method determines the tensile deformation area to be the peen area through the rib bending neutral axis and shields the non-peen area at the same time, so as to realize the peen bending forming of the integral ribbed structure; therefore, in the bending forming process of the ribbed structure, no torsion, flexure, sectional distortion, and the like phenomena happen. The method of the invention is also applicable to the peen bending forming of the integral structures with I-shaped or inversed-T-shaped rib section shapes.

Description

technical field [0001] The invention belongs to shot peening forming technology, and relates to a shot peening forming method of ribbed structural parts. Background technique [0002] Shot peening technology uses high-speed shot blasting to hit the surface of the metal plate, causing the impacted surface and its underlying metal material to undergo plastic deformation and elongate, so that the plate is gradually bent and deformed toward the sprayed surface to achieve the desired shape. a forming method. This technology began in the early 1950s and gradually developed with the wide application of aircraft integral panel parts. Because this forming method does not require special molds and presses in the forming process, the forming method is flexible and diverse, and is very suitable for small batch production. Therefore, the shot peening method is widely used in aircraft wings, fuselages and launch vehicle fuel tanks Waiting for siding forming. However, for the bending fo...

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): B23P17/00
Inventor 曾元松黄遐
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com