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

A processing method of hyperboloid forming equipment

A processing method and hyperboloid technology, applied in the field of shipbuilding, can solve the problems of high precision requirements, complex structure of semi-submersible lifting and dismantling platforms, and difficult construction, and achieve guaranteed accuracy, better product quality, and good confirmation. effect of error

Active Publication Date: 2021-10-01
CHINA MERCHANTS HEAVY IND JIANGSU +4
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The structure of the semi-submersible lifting and dismantling platform is complex, which is different from the conventional semi-submersible platform. It is an asymmetric structure with different lower floating bodies and columns. There is no cross brace in the middle, and it is only connected by the upper hull, which makes the construction difficult. High precision requirements

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 processing method of hyperboloid forming equipment
  • A processing method of hyperboloid forming equipment
  • A processing method of hyperboloid forming equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] Such as Figure 1-13 As shown, a processing method for hyperboloid forming equipment includes the following steps:

[0066] Step 1: Establish the mechanical model of cold forming and study the mechanical properties of special plates: combine the yield criterion of plate materials and the constitutive equation of elastic-plastic finite element method, solve the mechanical equation of cold forming, and derive the springback radius of material forming;

[0067] Step 2: Fitting the surface of the double-curvature plate and mathematically characterizing it;

[0068] Step 3: finite element numerical simulation to determine the rebound amount of the shape of the double-curvature molding die; Step 4: Processing and manufacturing the outer plate of the curved plate die, and making a set of outer plates at intervals of 500mm according to the curvature of the fitted hyperboloid. The upper mold with the same plate curvature, different upper molds are made according to different cu...

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 discloses a processing technology of double-curvature forming equipment, which includes: establishing a mechanical model of cold forming and studying the mechanical properties of special plates, deriving the rebound radius of material processing and forming; fitting the curved surface of double-curvature plates and performing Mathematical characterization: finite element numerical simulation to determine the springback of the shape of the double-curvature molding die: processing and manufacturing the curved plate die outer plate: the part of the outer plate whose curvature is not processed enough is thermally trimmed: install the special mold on the storage rack , assembled according to the number and partition of the base surface panel and fixed by spot welding; using the optical surface scanning measurement technology to reconstruct the shape of the hyperboloid after each bending: making a sample box for real-time measurement and control of the shape accuracy of the plate forming, the present invention Grasp the amount of springback compensation more accurately, ensure the quality of the product, better guarantee the accuracy of the curved surface, significantly improve the efficiency of bending and forming, reduce the manual workload, greatly shorten the working hours and save costs, and improve the quality of the product.

Description

technical field [0001] The invention relates to the shipbuilding industry, in particular to a processing method of cold-pressed hyperbolic panel forming equipment used for hull connection and transition. Background technique [0002] In terms of environmental protection, laws, and regulations, marine environmental protection is the starting point for platform dismantling. Dismantling old and idle platforms is of great significance for ensuring the marine environment, navigation and fishery production in the operating area. [0003] The structure of the semi-submersible lifting and dismantling platform is complex, which is different from the conventional semi-submersible platform. It is an asymmetric structure with different lower floating bodies and columns. There is no cross brace in the middle, and it is only connected by the upper hull, which makes the construction difficult. High precision is required. In order to avoid structural stress concentration, the connection be...

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): G06F30/15B21D5/02B21D37/10G06F30/20
CPCB21D5/0209B21D37/10G06F30/15G06F30/20G06F2119/14
Inventor 陈文科易志金刘建成朱永梅郑和辉莫刚陈伶翔吴海建唐文献
Owner CHINA MERCHANTS HEAVY IND JIANGSU
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