Liquid filling shearing bending formation method for small bending radius rectangular tube

A technology of shear bending and bending radius, which is applied in the field of liquid flushing shear bending forming of rectangular tubes with small bending radius. good surface quality

Inactive Publication Date: 2013-03-13
HARBIN INST OF TECH
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing bending process cannot form a small bending r

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
  • Liquid filling shearing bending formation method for small bending radius rectangular tube
  • Liquid filling shearing bending formation method for small bending radius rectangular tube
  • Liquid filling shearing bending formation method for small bending radius rectangular tube

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0028] Specific Embodiment 1: In this embodiment, a liquid flushing, shearing and bending forming method for rectangular tubes with small bending radius is to place the rectangular tubes in the mold cavity, and install rectangular sealing punches on both ends of the rectangular tubes respectively. , one of the rectangular sealing punches is connected to the liquid medium input pipeline; the liquid medium is filled into the rectangular tube through the liquid medium input pipeline, and the left and right advancement of the rectangular sealing punch realizes the sealing and axial feeding of the end of the rectangular tube; After the liquid medium in the rectangular tube is pressurized to the specified value; the movable module moves tangentially along the rectangular tube relative to the fixed module, and the rectangular tube undergoes shear deformation; when the movable module moves to the specified displacement, it stops moving and the rectangular seal is The head is retracted,...

specific Embodiment approach 2

[0029] Specific implementation mode two: combination Figure 1-Figure 6 Describe this embodiment, the concrete method of the flushing shear bending forming of this embodiment is:

[0030] Step 1, filling stage: place the rectangular tube 6 in the mold cavity composed of the fixed module 1 and the movable module 3, install a rectangular sealing punch 2 on both ends of the rectangular tube 6, and place a rectangular sealing punch 2 in one of them. A medium input pipeline 5 connected to the inner cavity of the rectangular tube 6 is inserted on the head 2; the liquid medium 4 is filled into the rectangular tube 6 through the medium input pipeline 5, and the rectangular sealing punch 2 is pushed inward to realize the rectangular tube 6 The initial seal at the end of the tube 6, at this time the hydraulic pressure p1 in the tube is less than 0.1σ s , σ s is the yield strength of the material;

[0031] Step 2, forming stage: pressurize the liquid medium 4 in the rectangular tube 6...

specific Embodiment approach 3

[0034] Specific implementation mode three: combination Figure 5 To illustrate this embodiment, the cross section of the rectangular tube 6 in this embodiment is a square cross section, a rectangular cross section with different aspect ratios, a rectangular cross section with transitional rounded corners or a rectangular cross section without transitional rounded corners. Such arrangement is especially suitable for rectangular tubes. Other components and connections are the same as those in the second embodiment.

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

PropertyMeasurementUnit
Yield strengthaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Corner radiusaaaaaaaaaa
Login to view more

Abstract

The invention discloses a liquid filling shearing bending formation method for a small bending radius rectangular tube and relates to a liquid filling shearing bending formation method. The invention aims to solve the problem that a small bending radius rectangular tube cannot be formed by the conventional bending processes. The method comprises the following steps: step 1, filling stage: placing a rectangular tube in a die cavity, mounting rectangular seal punches, inserting a medium input pipeline in one of the rectangular seal punches and filling a liquid medium in the rectangular tube, and propelling the rectangular seal punches inwards to implement the sealing; and step 2, formation stage: pressurizing the liquid medium in the rectangular tube, wherein a driving device drives a moving module to move in the tangent direction of the rectangular tube relative to a fixing module, and the rectangular seal punches at two ends of the rectangular tube are fed inwards in the axial direction to enable the pressure of the liquid in the rectangular tube to increase or keep constant and the rectangular tube to be deformed, keep the pressure, and relieve the pressure, and the driving device drives the moving module to open model and take out a tube. The method is used for the liquid filling shearing bending formation of the rectangular tube.

Description

technical field [0001] The invention relates to a liquid flushing shear bending forming method, in particular to a liquid flushing shear bending forming method for a rectangular pipe with a small bending radius. Background technique [0002] In recent years, rectangular tubes with small bending radius (R / B≤0.5, R-bending radius, B-width in radial direction of rectangular tubes) have been widely used in aviation and aerospace fields, especially in thin-walled lightweight components and communication , satellite ground stations, microwave measurement and other fields of rectangular waveguides, for example, in the radar feed network, there are a large number of rectangular waveguides, and the processing quality of the curved waveguides directly affects the performance indicators of the radar system. Using the integral curved waveguide instead of the elbow weldment can greatly simplify the processing process, shorten the production cycle, reduce the production cost, and improve ...

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): B21D9/15
Inventor 韩聪苑世剑王勇臧超
Owner HARBIN INST OF TECH
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