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Experimental Study on Flexible Roll Forming Process

Author: YuShuai
Tutor: LiuJiYing
School: North China University of
Course: Mechanical and Electronic Engineering
Keywords: Cold Roll Forming Flexible molding technology Variable cross-section profiles Experiment with technology research
CLC: TG386
Type: Master's thesis
Year: 2010
Downloads: 73
Quote: 2
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Abstract


The traditional cold roll forming to produce cross-sectional profile , and its products are widely used in automobile manufacturing and construction sectors . Variable cross-section profiles have better mechanical properties , can meet the requirements of the automotive lightweighting , and thus become a research focus on international flexible roll forming technology . Flexible roll forming process technology at home and abroad has just started , and most of them concentrated in the field of theoretical study and simulation , domestic in experimental studies is still blank . Biaxial flexible variable cross-section roll forming machine this article in the financial support of the National Natural Science Foundation of China and the Beijing Natural Science Foundation of China , North China University developed the first experimental study of flexible cold roll forming technology . Through experiments to solve the key problem of variable cross-section molding : parameter selection variable section sheet molding bending angle distribution forming of roll -shaped design , unit commissioning , plate , sheet velocimetry . Analyze and summarize the mechanism of variable cross-section profiles defects and Solutions . The leg folds of variable cross-section sample convex arc edge analysis , and sample web part flatness and deformation law study . Under the premise of using the same material , can be formed by reducing the side leg bending angle decreases leg high , or increasing the radius of the arc of the outer edge of the plate convex arcs from the profiles convex arc side leg wrinkles appear due to compression buckling; or thickness to reduce or avoid folds ; the web closer the side legs fold District larger deformation ; final conclusion biaxial flexible variable cross-section roll forming machine principle and basic mechanical structure and servo control device is reasonably practicable , can be used for the actual experimental and production , compared to the uniaxial flexible roll forming machine has a greater range of molding . Flexible roll forming process technology , the use of North China University of Technology developed the biaxial flexible variable cross-section roll forming machine , flexible roll forming experiments research useful exploration for accelerating the process of theoretical research and industrial application .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Cold stamping ( sheet metal processing) > Cold stamping process
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