Multi-objective optimization of variable slide velocity and variable blank holder force in sheet metal forming

2018 ◽  
Vol 2018.31 (0) ◽  
pp. 008
Author(s):  
Masaki YOKOYAMA ◽  
Satoshi KITAYAMA ◽  
Kiichiro KAWAMOTO ◽  
Takuya NODA ◽  
Takuji MIYASAKA ◽  
...  
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Multi Objective Optimization ◽  
Blank Holder Force ◽  
Blank Holder ◽  
Multi Objective ◽  
Variable Blank Holder Force ◽  
Slide Velocity

scholarly journals Design optimization of variable blank holder force trajectory and slide velocity in sheet metal forming

2018 ◽  
Vol 84 (863) ◽  
pp. 18-00162-18-00162 ◽  
Author(s):  
Masaki YOKOYAMA ◽  
Satoshi KITAYAMA ◽  
Kiichiro KAWAMOTO ◽  
Takuya NODA ◽  
Takuji MIYASAKA ◽  
...  
Keyword(s):  
Design Optimization ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Blank Holder Force ◽  
Blank Holder ◽  
Variable Blank Holder Force ◽  
Slide Velocity

Improving the Quality in Deep Drawing of Rectangle Parts Using Variable Blank Holder Force

2010 ◽  
Vol 37-38 ◽  
pp. 521-524
Author(s):  
Yu Qing Shi
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Deep Drawing ◽  
Metal Forming ◽  
Failure Modes ◽  
Blank Holder Force ◽  
Blank Holder ◽  
Variable Blank Holder Force

Wrinkling and tearing are the main failure modes in sheet-metal forming. Wrinkle may occur at the start of a punch stroke if the blank-holder force (BHF) is too low, and tearing may occur at the end of a stroke if the BHF is too high. The BHF is important for deep-drawing because of an effective way to promote deep formability sheet metal. They can be reduced or eliminated by manipulating a suitable BHF during sheet-metal forming. This paper presented an attempt to determine the effect of variable BHF on the tearing and wrinkling and investigated using 08Al sheet metal. The experiment show that tearing and wrinkling can be eliminated and the quality of deep drawing of rectangle parts can be improved using variable BHF.

Study on Blank Holder Force Control in Sheet Metal Forming Process

2012 ◽  
Vol 182-183 ◽  
pp. 1605-1608
Author(s):  
Xiao Juan Lin ◽  
Jian Hua Wang ◽  
Ke Gao Liu
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Main Function ◽  
Blank Holder Force ◽  
Forming Process ◽  
Blank Holder ◽  
Variable Blank Holder Force ◽  
The Status ◽  
Metal Forming Process

BHF is an important technical parameter in sheet metal forming, its main function is controlling material flowing，avoiding wrinkling and fracture. The status of study on the control technology of variable blank holder force (VBHF) was summarized, focusing on the method of optimized controlling and the theory of developing trend of VBHF is introduced in the paper.

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