Respectively from the three aspects

such as :the springback amount and size control

defect characteristics and stamping mould repair

pre-press surface protection .Study of complex curved surface stamping control

puts forward a method of complex curved surface stamping control . In addition

a correction method for improving the defects and sizes of small diameter convex flange is presented. In this paper

the general rules of "forming control of complex curved surface and small diameter flange sheet metal forming control" are analyzed

and the foundation for the forming research of the following type parts is laid.