Experimental investigation of hybrid material systems consisting of advanced composites and sheet metal

2016 ◽  
Vol 152 ◽  
pp. 840-849 ◽  
Author(s):  
M. Dlugosch ◽  
D. Lukaszewicz ◽  
J. Fritsch ◽  
S. Hiermaier
Keyword(s):  
Experimental Investigation ◽  
Sheet Metal ◽  
Hybrid Material ◽  
Advanced Composites ◽  
Material Systems

Deburring of Sheet Metal by Barrel Finishing

2007 ◽  
Vol 344 ◽  
pp. 193-200 ◽  
Author(s):  
Alberto Boschetto ◽  
Armando Ruggiero ◽  
Francesco Veniali
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Sheet Metal ◽  
Process Parameters ◽  
Working Time ◽  
Thin Sheets ◽  
Secondary Operation ◽  
Barrel Finishing ◽  
Technological Model ◽  
Local Deformations

In sheet metal processes the burrs cannot be completely eliminated during the process but can be minimized by optimization of the process parameters. Hence the deburring often becomes an essential secondary operation. Most of the deburring operations are hand-made and therefore several manufacturers tend to eliminate these tedious and labor-intensive operations due to time and cost issues. Moreover, clamping problems can arise which, together with the deburring forces, can induce dimension alterations and local deformations, particularly for thin sheets. Barrel finishing is an old technique commonly used to improve the surface roughness of complicated parts, but can find interesting applications also in the deburring. Aim of this work is to present an experimental investigation on the deburring of sheet metal performed by barreling. A technological model has been developed in order to assess the height of the burr as a function of the initial burr and of the working time.

Experimental investigation into a new hybrid-forming process: Incremental stretch drawing

2016 ◽  
Vol 232 (3) ◽  
pp. 475-486 ◽  
Author(s):  
Puneet Tandon ◽  
Om Namah Sharma
Keyword(s):  
Experimental Investigation ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Lead Time ◽  
Drawing Process ◽  
Forming Process ◽  
Setup Cost ◽  
Deep Drawing Process ◽  
Incremental Sheet Metal Forming

Incremental sheet metal forming is an evolving process, which is suitable for the production of limited quantities of sheet metal components. The main advantages of this process over conventional forming processes are reduced setup cost and manufacturing lead time, as it eliminates the need of special purpose dies, improves formability, reduces forming forces, and provides process flexibility. The objective of this work is to investigate a new hybrid-forming process, which intends to combine incremental sheet metal forming with deep drawing process and has been named as “incremental stretch drawing.” A number of setups and fixtures were developed to carry out experiments to achieve incremental stretch drawing and understand the mechanism of the process. This process addresses some of the challenges of incremental sheet metal forming, that is, limited formability in terms of forming depth, especially at steeper wall angles and subsequent thinning of sheet. It is observed that the proposed process is able to reduce thinning as much as about 300%, considering same forming depth for incremental sheet metal forming and incremental stretch drawing processes. Improvement in formability, in terms of forming depths, also has been observed to be near about 100% in particular cases.

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