Development of a combination punch speed and blank-holder fuzzy control system for the deep-drawing process

Manabe, Ken‐ichi; Koyama, Hiroshi; Yoshihara, Shoichiro; Yagami, Tetsuya

doi:10.1016/s0924-0136(02)00363-1

Cited by 35 publications

(22 citation statements)

References 7 publications

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“…Therefore, practically obtaining the values pertaining to the material to be processed will provide advantages in manufacturing and production costs. Currently many researches are carried out on this subject (Manabe et al, 2002;Karali, 2005;Gavas, 2005;Gavas andİzciler, 2006). There is focus particularly on studies regarding the decrease of earing on aluminum and magnesium alloys and regarding its effect on the surface structure (Tikhovskiy et al, 2007;Walde and Riedel, 2007).…”

Section: Introductionmentioning

confidence: 99%

Effect of the blank holder force on drawing of aluminum alloy square cup: Theoretical and experimental investigation

Demirci

Esner

Yaşar

2008

Journal of Materials Processing Technology

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Section: Introductionmentioning

confidence: 99%

Effect of the blank holder force on drawing of aluminum alloy square cup: Theoretical and experimental investigation

Demirci

Esner

Yaşar

2008

Journal of Materials Processing Technology

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“…Furthermore, this control system was modified to combine the variable BHF control. Its effectiveness and feasibility were confirmed experimentally to lead to a 25% reduction in the processing time (8) . The validity of the control method was also discussed using an analytical model of circular-cup deep-drawing considering the strain-rate sensitivity of the blank (9) .…”

Section: Introductionmentioning

confidence: 86%

FE Analysis on Deformation Mechanism of Strain-Rate-Sensitive Materials in Cylindrical Deep-Drawing with Combination Punch Speed and Blank Holder Control

Yagami

Manabe

2007

JMMP

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In the sheet stamping of strain-rate-sensitive materials, the forming limit is governed by punch speed (SPD) as well as blank holding force (BHF). In previous research, a combination control algorithm for simultaneously varying SPD and BHF was proposed to achieve high-speed deep-drawing. In this study, finite element (FE) simulation is conducted for circular-cup deep-drawing with combination SPD/BHF control in order to reveal the deformation mechanism of the improvement of deep-drawability. The numerical results demonstrate that even though the blank material has a low strain-rate dependence at room temperature, the drawability and production rate can be improved by properly varying SPD/BHF. It is found, from the simulation results, that a relatively low SPD with a low BHF in the early forming stage causes less thickness reduction at the punch shoulder. In the middle-to-last stage, therefore, the remaining blank can be successfully drawn into the die cavity with SPD and BHF higher than the critical constant SPD and BHF.

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“…In addition, they suggested that the VBHF was also effective to the increase of the limit drawing ratio (LDR) in comparison with a constant BHF. Manabe et al developed a fuzzy adaptive control system [2], in which both the punch speed and the BHF were controlled with knowledge database. In particular, the processing time was drastically improved in comparison with a constant punch speed and BHF.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation and optimization of pulsating and variable blank holder force for identification of formability window for deep drawing of cylindrical cup

Kitayama

Natsume

Yamazaki

et al. 2015

Int J Adv Manuf Technol

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When a difficult-to-draw material is used, it is important to clarify a formability window representing the relationship between the blank holder force (BHF) and the punch stroke. In many cases, variable blank holder force (VBHF) that the BHF varies through the punch stroke is useful for the successful sheet metal forming to the difficult-to-draw materials. Another approach is to use pulsating blank holder force (PBHF). Therefore, the use of both the PBHF and the VBHF is useful for identifying the formability window of difficult-to-draw materials. In this paper, the formability window of a difficult-to-draw material is clarified with the PBHF and the VBHF. A design optimization problem is constructed to identify the formability window, in which the punch stroke is maximized subject to wrinkling and tearing. Several parameters in the VBHF and PBHF are included, and these are taken as the design variables. Numerical simulation in sheet metal forming is so numerically intensive that response surface approach is used. In particular, a sequential approximate optimization (SAO) using a radial basis function (RBF) network is used to determine the optimal parameter of PBHF and VBHF. In the numerical simulation, deep drawing of a cylindrical cup based on NUMISHEET 2011(BM1) is used. The approach using the PBHF and VBHF for identifying the formability window is examined through the numerical simulation coupled with the SAO using the RBF network. It is found from the numerical result that the proposed approach is useful for clarifying the formability window of a difficult-to-draw material. In addition, the optimal PBHF can reduce the maximum punch load that affects the tool life.

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Development of a combination punch speed and blank-holder fuzzy control system for the deep-drawing process

Cited by 35 publications

References 7 publications

Effect of the blank holder force on drawing of aluminum alloy square cup: Theoretical and experimental investigation

Effect of the blank holder force on drawing of aluminum alloy square cup: Theoretical and experimental investigation

FE Analysis on Deformation Mechanism of Strain-Rate-Sensitive Materials in Cylindrical Deep-Drawing with Combination Punch Speed and Blank Holder Control

Numerical investigation and optimization of pulsating and variable blank holder force for identification of formability window for deep drawing of cylindrical cup

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