Deep Drawing of Sheet Metal

This chapter develops the skills of readers to perform deep drawing operation for manufacturing defect-free components for a wide variety of applications, including automotive, aeronautical, and food industries. Deep drawing is explained with reference to its applications and advantages. The equipment and operational steps in deep drawing are illustrated with the aid of a picture and sketches. The deep drawing process has been analyzed, taking into considerations the clearance (c), blank diameter (Db), punch diameter (Dp), die corner radius (Rd), punch corner radius (Rp), drawing force (F) and the blank holder force (BHF) (Fh); accordingly the relevant mathematical models are presented for computing the drawing force and BHF, and for checking the severity and feasibility of a deep-drawing operation for quality. The role of friction and compression played in the flange of the blank during the deep drawing process is also discussed. Finally, recent advances in deep drawing technology for eliminating wrinkling and tearing defects are briefly explained. This chapter contains 10 diagrams, a picture, 7 worked numerical examples, 7 problems, and 9 MCQs with their answers given at the end of the book.