An Experimental Study on the Die Roll Height According to the V-Ring Distance of the Fine Blanking Tool for the Seat Recliner Holder with Various Corner Shapes

2012 ◽  
Vol 626 ◽  
pp. 109-113
Author(s):  
Jong Deok Kim ◽  
Young Moo Heo ◽  
Heung Kyu Kim
Keyword(s):  
Experimental Study ◽  
Fine Blanking ◽  
Guide Plate ◽  
Corner Radius ◽  
Die Roll

In this paper, the relation between die roll height and V-ring distance of a fine blanking tool was studied by experimenting on a special designed seat recliner holder with various corner shapes. Three guide plate inserts with different V-ring distances and a die insert with constant die chamfer were machined, and a fine blanking tool was manufactured for the experiments. Three experiments were conducted on a 650-ton fine blanking press. Each die roll height on the sample from the experiments was measured and analyzed. It should be noticed that the die roll heights on the corner shapes of fine blanked parts increase with increasing the distance between the V-ring distance, and decrease with increasing corner radius and angle. These results can be used to minimize the die roll height of fine blanking parts with corner shapes when designing the V-ring of a fine blanking tool.

An Experimental Study on the Effect of Die Chamfer Shape and V-Ring Position on Die Roll Height in the Fine Blanking of a Special Part with Various Corner Shapes

2013 ◽  
Vol 365-366 ◽  
pp. 569-575 ◽  
Author(s):  
Jong Deok Kim
Keyword(s):  
Experimental Study ◽  
Fine Blanking ◽  
Guide Plate ◽  
Corner Radius ◽  
Special Part ◽  
Die Roll ◽  
Ring Position

In this paper, a change of die roll height according to the die chamfer shape and V-ring distance of a fine blanking tool was studied by experiments on a special part with various corner shapes. Three guide plate inserts with different V-ring positions and three die inserts with different die chamfers were machined, and then a fine blanking tool was manufactured for the fine blanking experiments. Nine experiments were conducted on a 650-ton fine blanking press. Each die roll height was measured and analyzed. It would be noticed that the die roll heights on the corner shapes of the fine blanked parts increased with increasing V-ring distance and die chamfer angle, but it decreased with increasing corner radius and angle. The results in this study can be used to minimize the die roll height of fine blanked parts with corner shapes when designing the V-ring and die chamfer of a fine blanking tool.

An Experimental Study of V-Ring Position on the Die Roll Height in the Fine Blanking of Special Part with Corner Shapes

2012 ◽  
Vol 184-185 ◽  
pp. 49-54 ◽  
Author(s):  
Jong Deok Kim ◽  
Young Moo Heo
Keyword(s):  
Experimental Study ◽  
Fine Blanking ◽  
Guide Plate ◽  
Corner Radius ◽  
Special Part ◽  
Die Roll ◽  
Ring Position

In this paper, the relation between die roll height and V-ring position of a fine blanking tool was studied by experimenting on a special part with various corner shapes. Three guide plate inserts with different V-ring positions and a die insert with constant die chamfer were machined, and a fine blanking tool was manufactured for the fine blanking experiments. Three experiments were conducted on a 650-ton fine blanking press. Each die roll height was measured and analyzed. We found the tendency of the die roll heights on the corner shapes of fine blanked parts to increase with increasing the distance between the V-ring position and the contour of the special part, and to decrease with increasing corner radius and angle. These results can be used to minimize the die roll height of fine blanking parts with corner shapes when designing the V-ring of a fine blanking tool.

A Study on the Effect of V-Ring Position on the Die Roll Height in Fine Blanking for Special Automobile Seat Recliner Gear

2011 ◽  
Vol 383-390 ◽  
pp. 7122-7127 ◽  
Author(s):  
Jong Deok Kim ◽  
Heung Kyu Kim ◽  
Young Moo Heo ◽  
Sung Ho Chang
Keyword(s):  
Fine Blanking ◽  
Guide Plate ◽  
Die Roll ◽  
Ring Position

In this paper, the relation between die roll height and V-ring position was studied by fine blanking experiments for imaginary special automobile seat recliner gear. The three die inserts and three guide plate inserts with different V-ring positions were machined, and fine blanking tool was manufactured. Using the fine blanking tool, three experiments were conducted on the 650 ton fine blanking press. Each die roll height was measured, analyzed and we found the tendency of die roll heights on imaginary special gear to increase with increasing the distance between V-ring position and contour of gear. This result can be used to minimize the die roll height of fine blanking gear parts when designing V-ring of fine blanking tool.

The effects of tool geometry change on shearing edge finish in fine-blanking of different materials

2003 ◽  
Vol 217 (8) ◽  
pp. 1057-1062 ◽  
Author(s):  
Y C Leung ◽  
L C Chan ◽  
C H Cheng ◽  
T C Lee
Keyword(s):  
Tool Geometry ◽  
Nose Radius ◽  
Fine Blanking ◽  
Burr Height ◽  
Service Period ◽  
Edge Surface ◽  
Edge Quality ◽  
Processing Material ◽  
Die Roll ◽  
Blanking Process

An excellent quality of shearing edge implies that a smooth cutting edge without tearing will be observed on the whole edge surface. This is one of the most significant features of the fine-blanking process. To achieve this good blanking edge quality in fine-blanking, quite a large number of factors need to be considered simultaneously during the operation, such as blanking speed, processing material, product shape, lubrication and tool geometry. Thus, the objective of this paper is mainly to study the influence of tool geometry change in fine-blanking for different materials. This is because the nose radius usually seriously deteriorates with increasing service period in mass production, which eventually causes the entire loss of the specific features of the fine-blanking process. Therefore, a tailor-made experimental study was carried out to investigate the relationship between the punch nose radius and the shearing edge quality, such as the shearing edge surface finish, burr height and die-roll height, during fine-blanking for different types of materials. Consequently, findings show that an increase in the punch nose radius produces a higher percentage of fracture of the blanked edge and increases the amount of burr height.

Improvement of Die-Roll Quality in Compound Fine-Blanking Forming Process

2011 ◽  
Vol 337 ◽  
pp. 236-241 ◽  
Author(s):  
Xin Hua Huang ◽  
Hua Xiang ◽  
Xin Cun Zhuang ◽  
Zhen Zhao
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Material Flow ◽  
The Finite Element Method ◽  
Forming Process ◽  
Fine Blanking ◽  
Die Roll ◽  
The Relationship ◽  
Element Method

Nowadays, the compound fine-blanking forming process is one of the most important processes to produce complicate multifunctional parts without subsequent machining. However, the big die-roll occurs in the sharp area is a common problem in this process. In this paper, the method with negative punch-die clearance was proposed to solve this problem by comparing three feasible plans. In addition, the influence on the process with different value of the negative punch-die clearance was studied by the finite element method (FEM). The results of this study verified that the process with suitable value of the negative punch-die clearance can result in significant decrease of the die-roll size. The relationship between the material flow near the region of die-roll and the punch-die clearance was also clarified.

scholarly journals Prediction of die-roll in fine blanking by use of profile parameters

2017 ◽  
Vol 207 ◽  
pp. 1564-1569 ◽  
Author(s):  
Kenji Fuchiwaki ◽  
Yuji Mure ◽  
Kazunari Yoshida ◽  
Masao Murakawa
Keyword(s):  
Fine Blanking ◽  
Die Roll
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