Double-transition-section cooperative movement precise forming optimization method based on free bending technology

A technology of collaborative motion and optimization methods, applied in design optimization/simulation, complex mathematical operations, special data processing applications, etc., can solve problems that do not meet the requirements of sustainable development, unsatisfactory effects, high cost consumption, etc., and achieve good promotion Application value, cost avoidance, effect of improving accuracy

Active Publication Date: 2021-12-03
NANJING UNIV OF TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method takes a long time and consumes a lot of cost, which does not meet the requirements of sustainable development
Another springback processing method is theoretical analysis, so as to compensate the springback amount in advance in the molding process, but this analysis method has many assumptions, and the effect is not ideal

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
  • Double-transition-section cooperative movement precise forming optimization method based on free bending technology
  • Double-transition-section cooperative movement precise forming optimization method based on free bending technology
  • Double-transition-section cooperative movement precise forming optimization method based on free bending technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the implementation of the present invention For example, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0049] A method for optimizing the precise forming of double transition section cooperative motion based on free bending technology, characterized in that the method includes the following steps:

[0050] Step 1: Obtain the eccentricity U value and the running time t of transition section 1 according to the U-R relational formula 1 , correction factor k=1.2:

[0051]

[0052]

[0053] Step 2: Obtain the transition section acceleration a according to the ab...

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 double-transition-section cooperative movement precise forming optimization method based on a free bending technology. The method is characterized in that the movement modes of two transition sections are combined; the method specifically comprises the steps that the eccentric distance U is determined according to a U-R relational expression, the running time of a transition section 1 is obtained, the transition section is optimized to be in uniform deceleration motion, and the initial speed and the accelerated speed of running of the transition section 1 are obtained; a uniform deceleration motion equation of the transition section 1 is determined according to the obtained data; on the basis of the determined U value, the running time of the transition section 2 is obtained, the transition section 2 is optimized to be in uniform acceleration motion, the running acceleration and the running end speed of the transition section 2 are obtained, and a uniform acceleration motion equation of the transition section 2 is determined according to obtained data. According to the method, the error with the design shape can be controlled within 2%, and any compensation or cyclic calculation measures are not needed; through combined movement of the transition section 1 and the transition section 2, the forming precision of a pipe is improved, and a new method is provided for precise forming of the free bending technology.

Description

technical field [0001] The invention belongs to the field of forming and manufacturing of metal components, in particular to a method for optimizing the precise forming of double transition sections coordinated motion based on free bending technology. Background technique [0002] Elbows have the advantages of high strength and high toughness, so they are widely used in aerospace, oil transportation, automobile manufacturing, architectural decoration, lightweight and other fields. The traditional pipe bending process includes push bending, stretch bending, press bending, etc., but the traditional pipe fitting processing technology seems to be stretched when forming pipe fittings with high degree of freedom and high precision requirements. The proposal of free bending technology meets the market's requirements for high-degree-of-freedom and high-precision pipe fittings, and provides an effective way for the development of market pipe fittings. According to the characteristic...

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 Applications(China)
IPC IPC(8): G06F30/20G06F17/11
CPCG06F30/20G06F17/11
Inventor 王华徐振华谢媛媛
Owner NANJING UNIV 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