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The effect of anisotropy on wrinkling of tube under rotary draw bending
Journal of Mechanical Science and Technology, 2013Rotary draw tube bending is one of the most complex tube forming processes subject to different process parameters such as material properties and geometry. This process is being practiced in more and more applications in industry due to its high efficiency, high forming precision and quality.
Kourosh Hasanpour +3 more
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Numerical Simulation and Optimal Design of Rotary Draw Bending Pipe
Applied Mechanics and Materials, 2007The numerical simulation method is used to solve the problems of pipe bending manufacturing such as die with fine cracks, ovality of pipe. The fan-shaped die is welded with steel plate in circle and rib in radial direction by the analysis of structural deformation.
Yi Nan Lai +3 more
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Automatic tooling design for rotary draw bending of tubes
The International Journal of Advanced Manufacturing Technology, 2005Cold rotary draw bending of tubes is a CNC metal forming process widely used in industry. When planning a new process, trial and error is often required in order to calculate the proper overbending and to avoid wrinkling, excessive thinning and flattening.
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Investigation of Neutral Axis Shifting in Rotary Draw Bending Processes for Tubes
Steel Research International, 2014Rotary draw bending is one of the most important methods used for tube forming processes. During the process of tube bending, the neutral axis of the tube moves toward the inner arc. The wall thickness distribution changes for the tube's cross section. Thinning takes place in the outer arc of the tube, whereas thickening occurs in the inner arc of the ...
Hassan Raheem Hassan
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Journal of Materials Processing Technology, 2010
Abstract For contact dominated rotary-draw-bending (RDB) of thin-walled tube, friction role should be focused to achieve precision bending under small bending radii ratio (Rd ...
H. Yang, H. Li, M. Zhan
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Abstract For contact dominated rotary-draw-bending (RDB) of thin-walled tube, friction role should be focused to achieve precision bending under small bending radii ratio (Rd ...
H. Yang, H. Li, M. Zhan
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Engineering Computations, 2023
PurposeWhen bending a large diameter thin-walled tube, the thickn ess of outer side wall will reduce greatly, which leads to a decrease of structural strength of the tube. To solve this problem, this paper investigated the deformation principles of an eccentric tube in the rotary draw bending process, trying to find a way to reduce the wall thickness ...
Zengkun Zhang +4 more
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PurposeWhen bending a large diameter thin-walled tube, the thickn ess of outer side wall will reduce greatly, which leads to a decrease of structural strength of the tube. To solve this problem, this paper investigated the deformation principles of an eccentric tube in the rotary draw bending process, trying to find a way to reduce the wall thickness ...
Zengkun Zhang +4 more
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Bending Mechanisms in AM30 Alloy Tube Using a Rotary Draw Bender
Materials and Manufacturing Processes, 2010The wall thickness strain and cross-section ovality of AM30 magnesium alloy tube after bending using a rotary draw bender were tested. Then the deformation mechanisms in the tube wall at different strain position were investigated. The results suggest that the extrados of the bent tube, which is thinning under tension, deforms mainly by dislocation ...
Wenyun Wu +4 more
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Re-engineering of Rotary Draw Bending Machines: A Survey of Manufacturers and Users
International Journal of Precision Engineering and Manufacturing-Green Technology, 2019Natural resources limitation and new legislative rules for waste reduction prompt the manufacturers of machine tools to be responsible for taking back their obsolete machines of high value-added, and use sustainable disposal methods such as machine retrofitting, rebuilding, or remanufacturing.
Bernd Engel +1 more
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EFFECT OF LUBRICANT IN MANDREL-ROTARY DRAW TUBE BENDING OF STEEL AND ALUMINUM
Canadian Metallurgical Quarterly, 2005Mandrel-rotary draw tube bending experiments examining the effect of lubricant selection were performed using a fully instrumented Eagle EPT-75 bender.
D.A. OLIVEIRA, M.J. WORSWICK, R. GRANTAB
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SAE International Journal of Materials and Manufacturing, 2008
<div class="htmlview paragraph">One of the most significant manufacturability-criterions of a tubular component in bending and/or hydroforming operation is the formability limit of the selected tube material. Currently the most common tool used to determine the material formability is the North American “standard” forming limit diagram (FLD ...
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<div class="htmlview paragraph">One of the most significant manufacturability-criterions of a tubular component in bending and/or hydroforming operation is the formability limit of the selected tube material. Currently the most common tool used to determine the material formability is the North American “standard” forming limit diagram (FLD ...
openaire +1 more source