The Development/Application of Sheet Metal Forming Technology at Alcoa

1993 ◽  
Author(s):  
E. Chu ◽  
K. N. Shah ◽  
F. Pourboghrat ◽  
K. Chandorkar
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Forming Technology ◽  
Development Application

scholarly journals Developments of New Sheet Metal Forming Technology and Theory in China

2015 ◽  
Vol 28 (12) ◽  
pp. 1452-1470 ◽  
Author(s):  
Shi-Hong Zhang ◽  
Shuai-Feng Chen ◽  
Yan Ma ◽  
Hong-Wu Song ◽  
Ming Cheng
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Forming Technology

Study on the Surface Quality of Fender NC Incremental Forming

2011 ◽  
Vol 335-336 ◽  
pp. 523-526
Author(s):  
Liu Ru Zhou
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Process Time ◽  
Forming Process ◽  
Forming Technology ◽  
Starting Point ◽  
Incremental Sheet Metal Forming ◽  
Metal Deformation ◽  
Improvement Method

The NC incremental sheet metal forming technology is a flexible forming technology without dedicated forming dies. The forming locus of the forming tool can be adjusted by correcting the numerical model of the product. Because the deformation of sheet metal only occurs around the tool head and the deformed region is subjected to stretch deformation, the deformed region of sheet metal thins, and surface area increases. Sheet metal forming stepwise is to lead to the whole sheet metal deformation. The principle of NC incremental sheet metal forming and the forming process of the fender are introduced. The effect of process parameters on forming is analysed. The improvement method of the forming quality is suggested. The groove is created in the starting point of tool moving when the starting point of tool moving locus at all layers is identical. The groove can be eliminated when the starting point of tool moving locus at all layers is different. The feed pitch p increase, the process time decrease, production rate and surface degree of roughness increase. In general, the feed pitch is 0.25mm.

The Effect of Forming Half-Apex Angle on Incremental Sheet Metal Forming

2010 ◽  
Vol 139-141 ◽  
pp. 1514-1517 ◽  
Author(s):  
Liu Ru Zhou
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Tool Path ◽  
Sheet Material ◽  
Sheet Thickness ◽  
Apex Angle ◽  
Forming Limit ◽  
Forming Technology ◽  
Incremental Sheet Metal Forming

The incremental sheet metal forming technology is a flexible forming technology without dedicated forming dies. The locus of the forming tool can be adjusted by correcting the numerical model of the product. The effect of forming half-apex angle on forming process with all kind of sheet material, sheet thickness and ironing ratio is researched. The limit half-apex angle is different for all kind of sheet material and thickness. The limit half-apex angle is smaller for the larger thickness of sheet metal. It will succeed in square conical box incremental forming in a single tool-path if the forming is carried out with an angle which is larger than the forming limit half-apex angle θ. The ironing ratio ψt is decided by the forming half-apex angle θ. The ironing ratio ψt varies with θ. The ironing ratio ψt is smaller when is larger.

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