A description is made on a structure operating principle and main points of the design of auto-feed progressive die of bending extruding flat and cutting for the leading foots.

This study is associated with the pin breakage problem that pertains to the insert-trough circuit panel in a satellite data-processing box.

According to the characteristics of substrate draw-foot image,a BP neural network has been found to recognize them,and a software package based on those have been developed and implemented.