A Review on Compensation of Spring Back In Sheet Metal Bending Process
Sachin Ambadas Satpute, Dr.R.P.Chopade
Dies, FEA (Finite Element Analysis), Springback, Tools
In sheet metal bending process, a sheet metal blank is plastically deformed between tools (dies) to obtain the desired final configuration. The sheet metal industry, a part of the wide metal forming industry, involves processes for producing sheet metal forming covers from very small electronic components to automobile parts and bodybuilding, aeronautical industries and many.. The accuracy in dimension is always remains a major concern in sheet metal bending process, owing to the considerable elastic recovery during unloading, which leads to spring back. Spring back is normally measured in terms of difference between the dimension of fully loaded and unloaded configuration. Tool shape and dimension, contact friction condition, material properties, thickness of sheet, sector angle are the major parameters that affect the spring back. The determination of spring back by means of trial and error technique not only increases the cost for the manufacturing and repair of the tool but also waste a lot of time, causing delay in the development of the product. The prediction of spring back using numerical simulation based on Finite Element Analysis (FEA) with mathematical and statistical modelling technique has been proofed a powerful tool and using by various researchers for determination of spring back accurately.