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A Springback Compensation System Based on Springback Mechanics and Design Parameter Optimization
Volume 2: 32nd Computers and Information in Engineering Conference, Parts A and B, 2012A new springback compensation system based on springback mechanics is developed. The cause of springback is the bending moment before springback. To compensate the tool shape, it is necessary to satisfy the springback mechanical equation which is expressed by curvature and bending moment. In this system, the bending moment before springback is designed
Naoyuki Doke, Tetsuo Oya
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An accelerated springback compensation method
International Journal of Mechanical Sciences, 2007Part shape error due to springback is usually considered to be a manufacturing defect in sheet metal forming process. This problem can be corrected by adjusting the tooling shape to the appropriate shape and/or active process control. In this paper, the focus will be on tooling shape design.
Hang Shawn Cheng +2 more
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Compressive Instability Phenomena During Springback
AIP Conference Proceedings, 2007Springback in sheet metal product makes difficulties in die design because small strain causes large displacement. Especially for the sheet metal product having small geometric constraints, springback displacement may become severe. After first stage of stamping of outer case of washing machine, a large amount of springback is observed.
J.-B. Kim, J. W. Yoon, D. Y. Yang
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Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2009
In sheet metal forming processes, one of the main problems is the occurrence of springback/negative springback which can be influenced by various factors. A number of research scientists have conducted valuable investigation on springback phenomenon. However, the negative springback problem has rarely been investigated.
B Rahmani +3 more
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In sheet metal forming processes, one of the main problems is the occurrence of springback/negative springback which can be influenced by various factors. A number of research scientists have conducted valuable investigation on springback phenomenon. However, the negative springback problem has rarely been investigated.
B Rahmani +3 more
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Time Dependent Springback of a Magnesium Alloy
Materials & Design, 2014A time dependent springback was observed in a Mg-Al-Zn (AZ31) rolled sheet after three-point bending at room temperature (RT). The springback increased nonlinearly with time at RT. After bending, specimens were held in the bent state for up to five months, and the springback dramatically decreased after being held for one month compared with specimens ...
B. Li +5 more
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Springback Considerations in Forming Aluminum
SAE Technical Paper Series, 1977<div class="htmlview paragraph">Springback from tension loading has been quantitatively assessed for 5182 aluminum alloy after various percents of rolling reduction. Aluminum alloys 5182-H140, 2036-T4, X7046-T6 and 1010-CQ steel as commercially produced also have been evaluated and compared in relation to springback, both in tensile and bending ...
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Springback in simple axisymmetric stampings
Metallurgical Transactions A, 1993A series of experiments was conducted to measure springback (calculated from dome height measurements) in a simple, stretched sheet metal part formed using a 50.8-mm-radius hemispherical punch. Parts were formed from three materials [5182-0 aluminum, 2036-T4 aluminum, and aluminum-killed (AK) steel] using three different binder geometries (lockbead ...
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Inelastic effects on springback in metals
International Journal of Plasticity, 2002zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Cleveland, R. M., Ghosh, A. K.
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Volume Morphing to Compensate Stamping Springback
SAE Technical Paper Series, 2009<div class="htmlview paragraph">A common occurrence in computer aided design is the need to make changes to an existing CAD model to compensate for shape changes which occur during a manufacturing process. For instance, finite element analysis of die forming or die tryout results may indicate that a stamped panel springs back after the press line
Ramon F. Sarraga +4 more
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Springback in high-strength steels
Journal of Applied Metalworking, 1981A study has been made of springback after the forming of a simple flange in CRLC, SAE 950X and 980X, and a dual-phase steel; the variables investigated were material thickness, die gap, anvil radius and prior cold work. It was found that springback increased as the strength of the steel, anvil radius and die gap increased and as the sheet thickness ...
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