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

Rigid mold-flexible mold composite forming device and method of reducing cylindrical part

A technology for composite forming and cylindrical parts, applied in the field of sheet metal forming, can solve the problems of inability to form rigid molds and low pressure forming efficiency of viscous medium, and achieve the effects of good repeatability of parts, improved forming limit and high efficiency

Active Publication Date: 2018-02-16
SHAANXI UNIV OF SCI & TECH
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the traditional rigid die cannot form large-size variable-diameter cylindrical parts, and the problem of low pressure forming efficiency by using viscous medium is to provide a rigid-flexible mold composite forming device and method for variable-diameter cylindrical parts

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
  • Rigid mold-flexible mold composite forming device and method of reducing cylindrical part
  • Rigid mold-flexible mold composite forming device and method of reducing cylindrical part
  • Rigid mold-flexible mold composite forming device and method of reducing cylindrical part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0027] Such as image 3 As shown, a rigid mold-flexible mold composite forming device for a cylindrical part with reduced diameter includes a first plunger 1, a blank holder 2, a combined die 4 and a second plunger 5; the first plunger 1 has one end Close the open inner cavity at the other end, the closed end of the first plunger 1 is provided with a medium hole 11, the combined die 4 includes two half dies, the two half dies are combined to form a cavity with the same shape as the part to be formed 41. When in use, the blank holder 2 is located above the combined die 4, the blank holder 2 and the combined die 4 are set up and down, and the blank holder 2 and the combined die 4 are provided with a plate 3 to be formed. The closed end of the first plunger 1 extends into the combined concave c...

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
Diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
The maximum diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a rigid mold-flexible mold composite forming device and method of a reducing cylindrical part, and belongs to the technical field of plate forming. The device comprises a firstplunger, a blank holder, a combined concave mold and a second plunger. A plate is pressed into a cavity of the combined concave mold through the first plunger, a viscous medium in an inner cavity of the first plunger is extruded out from medium holes thorough the second plunger, medium pressure acts on the to-be-formed plate so that the to-be-formed plate can deform, and the characteristics that the traditional plate rigid mold forming efficiency is high and the part repeatability is good are achieved; meanwhile, the characteristics that the viscous medium has viscidity adhesive force and strain rate sensibility during viscous medium pressure forming are achieved; the problem that parts with complex cavities cannot be obtained during rigid mold forming is solved; and meanwhile the problemsthat when large-size parts are formed, filling of the viscous medium is slow in the viscous medium pressure forming process, after part forming, a large number of viscous media adhere to the metal surfaces, and the removal time is long are solved.

Description

technical field [0001] The invention relates to the technical field of plate forming, in particular to a rigid die-flexible die compound forming device and method for a variable-diameter cylindrical part. Background technique [0002] Traditional plate forming uses rigid molds to form parts, which has the advantages of high production efficiency, good repeatability, and suitable for mass production. However, for some variable-diameter parts with complex cavity and complex structure, limited by the fixed rigid mold structure and shape, the required shape cannot be formed by rigid mold forming. The sheet metal flexible mold forming process uses liquid water or hydraulic oil, semi-solid viscous medium or solid polyurethane rubber as the forming punch or die, and the other half uses traditional rigid molds, which can not only reduce mold processing costs, but also because Fluidity, can fill complex cavity, and has great advantages in the forming of complex shape parts. Among t...

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): B21D26/021B21D26/031
CPCB21D26/021B21D26/031
Inventor 王朋义王忠全
Owner SHAANXI UNIV OF SCI & TECH
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