J122011 Optimization of Segmented Blank Holder Shape and Its Variable Blank Holder Gap in Deep-Drawing Process

2012 ◽  
Vol 2012 (0) ◽  
pp. _J122011-1-_J122011-5
Author(s):  
Jirasak Srirat ◽  
Koetsu Yamazaki ◽  
Satoshi Kitayama
Keyword(s):  
Deep Drawing ◽  
Drawing Process ◽  
Blank Holder ◽  
Deep Drawing Process

Blank holder force optimisation strategy in deep drawing process

2007 ◽  
Vol 1 (2) ◽  
pp. 226 ◽  
Author(s):  
Hossam H. Gharib ◽  
Abdalla S. Wifi ◽  
Maher Y.A. Younan ◽  
Ashraf O. Nassef
Keyword(s):  
Deep Drawing ◽  
Drawing Process ◽  
Blank Holder Force ◽  
Blank Holder ◽  
Deep Drawing Process

Study of the Parameters of Deep Drawing Process Based on the Simulation of Dynaform

2012 ◽  
Vol 249-250 ◽  
pp. 51-58
Author(s):  
Qing Wen Qu ◽  
Tian Ke Sun ◽  
Shao Qing Wang ◽  
Hong Juan Yu ◽  
Fang Li
Keyword(s):  
Friction Coefficient ◽  
Sheet Metal ◽  
Deep Drawing ◽  
Drawing Process ◽  
Blank Holder Force ◽  
Blank Holder ◽  
Deep Drawing Process ◽  
Drawing Die ◽  
Drawing Speed

A simulation of deep drawing process on the sheet metal was done by using Dynaform, the influence of blank holder force, deep drawing speed and friction coefficient on the forming speed of sheet metal in the deep drawing process were got. The forming speed of sheet metal determines the quality of deep drawing, in the deep drawing process the blank holder force and the deep drawing speed are controllable parameters, the friction coefficient can be intervened and controlled, and it’s a manifestation of the interaction of all parameters, the main factors which influence the friction coefficient just have blank holder force, deep drawing speed and lubrication except the material. The conclusion of this study provides the basic data for the analysis of the lubrication of mould, the study of lubricant and the prediction of the service life of deep drawing die.

Effect of Blank Holder Force with Low Frequency Vibration Technique in Circular-Cup Deep-Drawing Using AZ31 Magnesium Alloy Sheet

2011 ◽  
Vol 383-390 ◽  
pp. 2785-2789
Author(s):  
Naoki Horiike ◽  
Shoichiro Yoshihara ◽  
Yoshitaka Tsuji ◽  
Yusuke Okude
Keyword(s):  
Deep Drawing ◽  
Low Frequency ◽  
Lubricating Oil ◽  
Drawing Process ◽  
Blank Holder Force ◽  
Forming Process ◽  
Blank Holder ◽  
Deep Drawing Process ◽  
Low Frequency Vibration ◽  
Friction Performance

In the deep-drawing process, the application of low-frequency vibration to the blank material has recently been focused on with the aim of improving the friction performance between the die and the blank material. A servo-controlled press machine is suitable for applying low-frequency vibration to the blank during the deep-drawing process, because the punch speed and blank holder force (BHF) are easily controlled as process parameters by using the servo motors. In this study, a BHF with low-frequency vibration was proposed as a technique for improving deep-drawability, which is mainly affected by the friction performance and the lubricant condition. We found that the friction performance between the blank surface and the blank holder was decreased in the case of a BHF with low-frequency vibration since the lubricating oil rapidly flowed into the clearance during the forming process. Furthermore, for a BHF with low-frequency vibration, the punch force and the deformation resistance were lower than those in a deep-drawing test without low-frequency vibration.

318 Optimization of variable blank holder force trajectory in deep drawing process

2016 ◽  
Vol 2016.53 (0) ◽  
pp. _318-1_-_318-5_
Author(s):  
Hiroki KOYAMA ◽  
Satoshi KITAYAMA ◽  
Takuya NODA ◽  
Ken YAMAMICHI ◽  
Kiichiro KAWAMOTO
Keyword(s):  
Deep Drawing ◽  
Drawing Process ◽  
Blank Holder Force ◽  
Blank Holder ◽  
Deep Drawing Process ◽  
Variable Blank Holder Force

scholarly journals 2111 Study on Effect of Blank Holder Gap on Cylindrical Cup Deep Drawing Process

2010 ◽  
Vol 2010.20 (0) ◽  
pp. _2111-1_-_2111-5_
Author(s):  
Jirasak Srirat ◽  
Koetsu Yamazaki ◽  
Satoshi Kitayama
Keyword(s):  
Deep Drawing ◽  
Drawing Process ◽  
Blank Holder ◽  
Deep Drawing Process ◽  
Cylindrical Cup

Research on Deep Drawing Process Using Radial Segmental Blank Holder based on Electro-permanent Magnet Technology

2020 ◽  
Vol 59 ◽  
pp. 636-648
Author(s):  
Hongsheng Zhang ◽  
Siji Qin ◽  
Liqin Cao ◽  
Linyuan Meng ◽  
Qianrong Zhang ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Deep Drawing ◽  
Drawing Process ◽  
Blank Holder ◽  
Deep Drawing Process ◽  
Magnet Technology

Effect of Geometries of Die/Blank Holder and Punch Radii in Angular Deep-Drawing Dies on DP Steel Formability

2015 ◽  
Vol 813-814 ◽  
pp. 269-273 ◽  
Author(s):  
P. Venkateshwar Reddy ◽  
S. Hari Prasad ◽  
Perumalla Janaki Ramulu ◽  
Sirish Battacharya ◽  
Daya Sindhu Guptha
Keyword(s):  
Deep Drawing ◽  
Thickness Distribution ◽  
Frictional Coefficient ◽  
Drawing Ratio ◽  
Drawing Process ◽  
Dp Steel ◽  
Punch Force ◽  
Blank Holder ◽  
Deep Drawing Process ◽  
Drawing Dies

In recent days deep-drawing is one of the most important methods used for sheet metal forming. The geometries of die/blank holder and punch are one of the parameters for deep-drawing. This paper presents an attempt to determine the effect of different geometries of die/blank holder, punch radii and blank holding force on deep drawing process for the formability of DP Steel of 1mm sheet. The numerical simulations are performed for deep drawing of cylindrical cups at a constant frictional coefficient of 0.12 and different blank holding forces of 10, 15 and 20kN are used. For numerical simulation PAM STAMP 2G a commercial FEM code in which Hollomon’s power law and Hills 1948 yield’s criterion is used. The die/blank holder profile used with an angles of α=0°, 12.5°, 15° and die/punch profile with a radii of R= 6 and 8mm were simulated to determine the influence of punch force and thickness distribution on the limit drawing ratio. The aim of this study is to investigate the effect of tool geometries on drawability of the deep-drawing process.

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