Results 1 to 10 of about 727 (223)

Springback angle prediction of circular metal tube considering the interference of cross-sectional distortion in mandrel-less rotary draw bending [PDF]

Science Progress, 2021
The springback directly affects the forming accuracy and quality of metal bent-tube, and accurate springback prediction is the key to the springback compensation and control.
Huifang Zhou, Shuyou Zhang, Lemiao Qiu, Zili Wang   +3 more
doaj   +2 more sources

Finite-Elements Modeling and Simulation of Electrically-Assisted Rotary-Draw Bending Process for 6063 Aluminum Alloy Micro-Tube

Metals, 2021
Bent micro-tubes have been frequently applied in electronics, medical devices and aerospace for heat transfer due to the increasing heat flux in high-density electric packages.
Xinwei Wang, Jie Xu, Minghan Ding, Yanhu Zhang, Zhenlong Wang, Bin Guo, Debin Shan   +6 more
doaj   +3 more sources

Toolset profiling for rotary draw bending of waveguides [PDF]

EPJ Web of Conferences
The paper discusses the problem of bending quality of thin-walled structures of waveguides of rectangular cross section. Modern methods of solving the bending problems have been studied, from empirical relations to the use of artificial intelligence ...
Kudryavtsev Ilya, Kolotov Andrey, Mityaev Alexander   +2 more
doaj   +2 more sources

Springback optimization for CNC tube bending machine based on an artificial neural networks (ANNs) [PDF]

FME Transactions, 2023
Predicting the springback angle has become the major production problem among tube benders. Springback is where the tube on a mandrel-less rotary draw bending tends to bounce back after being bent when the clamps are released.
Kongnoo Somchai, Sonthipermpoon Kawin, Wannarumon Kielarova Somlak   +2 more
doaj   +1 more source

Full-cross-section deformation characterization of Cu/Al bimetallic tubes under Rotary-Draw-Bending based on physics-driven B-spline curves fitting

Materials & Design, 2022
It is difficult to detect the inner layer of the bimetallic tube and to describe its full-cross-section deformation, which negatively affects its verification and utility.
Mengyu Fu, Zili Wang, Shuyou Zhang, Xiaojian Liu, Yaochen Lin, Le Wang   +5 more
doaj   +1 more source

Deformation Property and Suppression of Ultra-Thin-Walled Rectangular Tube in Rotary Draw Bending

Metals, 2020
Recently, miniaturization and weight reduction have become important issues in various industries such as automobile and aerospace. To achieve weight reduction, it is effective to reduce the material thickness. Generally, a secondary forming process such
Kunito Nakajima, Noah Utsumi, Yoshihisa Saito, Masashi Yoshida   +3 more
doaj   +1 more source

Size effect mechanism of cross-section deformation and section hollow coefficient-bending degree of the thin-walled composite bending tube

Materials & Design, 2021
The composite tube has been widely used in various fields of piping systems, because of saving precious metals and combining physical and chemical properties of bi-material.
Y.X. Zhu, M.M. Wan, Y. Wang, W.B. Tu, Y.F. Cheng   +4 more
doaj   +1 more source

Influence of the stiffness of machine axes on the formation of wrinkles during rotary draw bending

SN Applied Sciences, 2020
This study presents that finite element (FE) simulations of rotary draw bending are improved by taking into account the stiffnesses of the machine axes.
Linda Borchmann, Christopher Heftrich, Bernd Engel   +2 more
doaj   +1 more source

Experimental and Numerical Investigation on the Heat Treatment Effects of AA6063 Aluminum Alloy Tubes During Rotary Draw Bending [PDF]

Iranian Journal of Materials Science and Engineering, 2022
In this study, the effects of heat treatment of aluminum alloy on the tube bending process were investigated in the rotary draw bending process. As two experimental and numerical simulation methods were used to determine the wall-thinning, ovality, and ...
Hamid Reza Rezaei Ashtiani, Shahab Moghaddam   +1 more
doaj  

Selection criterion of material filling in ridge grooves for reducing cross-sectional deformation of double-ridged rectangular bent tube

Materials Research Express, 2020
In order to satisfy the further improvement of new communication equipment, filling the ridge grooves on side walls with fillers is the effective method to improve the quality of double-ridged rectangular bent tube in H-typed rotary draw bending. However,
Chunmei Liu, Yuli Liu
doaj   +1 more source