Bulging draw forming method for variable-camber half flat tube part

A technology of variable curvature and parts, applied in the field of aircraft manufacturing, to avoid cracking, improve mold clamping accuracy and reliability, and solve the effects of springback and wrinkling

Active Publication Date: 2015-03-25
XIAN AIRCRAFT BRANCH OF XIAN AIRCRAFT INT
View PDF5 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the defects in the traditional method of manufacturing large bending radius plates and variable

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
  • Bulging draw forming method for variable-camber half flat tube part
  • Bulging draw forming method for variable-camber half flat tube part
  • Bulging draw forming method for variable-camber half flat tube part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] See attached picture, figure 1 Shown is the known theoretical model 1 of variable curvature semi-flat tube parts. Firstly, according to the theoretical model of the part, the process model of the bulging and deep drawing forming of the part is established, such as figure 2 As shown, the process model extends the bending line 2 on both sides of the theoretical model 1 of the part and the end line 3 at both ends and performs process compensation to make it a cavity with a rounded process compensation end 4. The bottom surface of the cavity is Annular flange edge 5, the flange edge 5 is kept parallel to the flange line 2 of theoretical model 1; then the unfolded wool material for part processing is made according to the process model; the expanded wool material is estimated based on the principle that the wool material before and after forming is equal to the surface area of ​​the part, and the expanded wool material and the part surface area are equal The outer contour ...

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 bulging draw forming method for a variable-camber half flat tube part. A process model for bulging draw forming of the part is set up according to a theoretical model of the part, the process model is used for carrying out process compensation on the theoretical model of the part to enable the theoretical model to become a cavity with a circular bead process end, an annular flange edge is arranged on the bottom face of the cavity, unfolded blank materials and a bulging draw forming die for part machining are manufactured according to the process model, and the plate blank materials to be formed are subjected to pressing and draw forming under the effect of external force.

Description

technical field [0001] This application relates to the field of aircraft manufacturing, sheet metal parts deep-drawing forming technology, specifically a method of deep-drawing and forming of semi-flat tube parts with variable curvature, especially suitable for bulging and deep-drawing of variable-curvature semi-flat tube parts with large bending radius take shape. Background technique [0002] In the field of aircraft parts manufacturing, the springback of plate parts with large bending radius has always been a major problem in production; especially the manufacture of semi-flat tube parts with variable curvature and requirements for butt seam welding is very difficult. The reason is that due to the large bending radius, the deformation of the material is almost in the elastic deformation stage, resulting in the phenomenon that the springback does not stick to the mold after unloading, and the thickness direction of the material is unstable due to the deformation of the con...

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): B21D22/22B21D37/10
CPCB21D22/22B21D37/10
Inventor 倪兴屹彭永前邱超斌张小平叶红惠小鹏
Owner XIAN AIRCRAFT BRANCH OF XIAN AIRCRAFT INT
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