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

Self-feedback control method and system for coordinated optimization of lumber flatness and residual stress

A residual stress, coordination and optimization technology, applied in the field of additive manufacturing, can solve the problems of non-compliance of welds and the quality of additive products, and achieve the effect of avoiding non-compliance with requirements

Active Publication Date: 2020-12-29
CHONGQING UNIV
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the current additive process, due to the unilateral consideration of the stress relief effect of hammering, the weld after hammering often does not meet the requirements, which will eventually have a serious impact on the quality of the formed additive product.

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
  • Self-feedback control method and system for coordinated optimization of lumber flatness and residual stress
  • Self-feedback control method and system for coordinated optimization of lumber flatness and residual stress

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036]In the prior art, it is desirable to obtain a smaller initial flatness when adding materials. The present invention works in the opposite way, adopting a larger initial flatness to ensure that the welding seam produces sufficient plastic extension deformation after the contact impact to offset the uncoordinated strain. Therefore, the greater flatness after the addition of materials will greatly help the subsequent hammering work. At the same time, the flatness after hammering is considered to ensure that the shape and flatness of the weld after the contact impact must also meet the standard.

[0037]A self-feedback control method for coordinating and optimizing the flatness of accumulated lumber and residual stress includes the following steps:

[0038]According to the historical data of additive process and hammering process, the following corresponding relationship is established:

[0039]The relationship between the flatness of the weld and the residual stress is used to obtain the ...

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 self-feedback control method and system for coordinated optimization of laminated material flatness and residual stress. The system comprises a flatness and residual stress coordinated optimization database and a process optimization control system. According to the system, additive and hammering process parameters are systematically arranged, the relationship between theprocess parameters and the flatness and the residual stress is researched and concluded, and meanwhile the corresponding relationship between the flatness and the residual stress is established. In the production process, the system performs real-time monitoring on the flatness according to the relationship between the flatness and the residual stress and based on a three-dimensional scanning technology; initial setting of additive parameters and real-time control of hammering parameters are achieved through the coordinated optimization system and the process control center, coordinated optimization of flatness and residual stress is achieved, and the parameter setting accuracy and the production efficiency are improved while the additive and hammering process production effect is guaranteed.

Description

Technical field[0001]The invention relates to the technical field of additive manufacturing, in particular to a self-feedback control method and a self-feedback control system for coordinating and optimizing the flatness and residual stress of the accumulated material in the additive process.Background technique[0002]The additive manufacturing technology is to divide the three-dimensional model into a set of parallel two-dimensional layers according to the requirements of the welding process, and then plan the motion trajectory of the welding gun according to the contour information of the different layers, and then the metal material is melted by the welding arc, and the shape is The path stacks the layers one by one, and finally the metal layers are stacked to obtain the desired shape. After the addition, residual stress is formed inside the part. Residual stress will not only affect the performance of the parts, but also gradually accumulate as the number of deposited layers incr...

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): G05B19/418B21D1/00B21D3/00
CPCB21D1/00B21D3/00G05B19/41865G05B2219/32252Y02P90/02
Inventor 权国政鹿超龙温志航张建生周杰
Owner CHONGQING UNIV
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com