Earing Sheet Metal Drawing

Earing is defined as formation of waviness on uppermost portion of deep drawn cup.
Earing sheet metal drawing. Clearance in cutting operations is relatively small usually 3 to 8 of sheet metal thickness. Discover the world s research 17 million members. By comparison with the actual sheet texture those textural components which most affect earing behaviour are identified. Knowledge about ear formation in deep drawing process allows a prior modification of process which can result in defect free final product with financial saving and time.
In deep drawing manufacture if the clearance is too small the sheet may be cut or pierced not well despite the radius. Earing is one of the major defects observed during deep drawing process due to anisotropic nature of sheet metal.