Process characteristics of swing arm cutting machine: the shoemaking equipment with arm punch structure, is the need to process natural leather cutting. When the arm out of the work on the natural leather surface, make the knife die has a larger operating space and better lighting and visual effects in the choice of materials and the discharge, in order to avoid the extension of disabled, uneven texture, rate of surface is not uniform, punching shoes quality. The characteristics of this process determines the blanking machine, it is particularly suitable for leather shoe uppers fabric. Reasonable choice of materials can not only improve the appearance quality of help, but also conducive to the cutting slope after stubble slitting, folding, sewing process quality, especially the correct choice of elongation, but also can improve the lasting and molding shaping quality. A reasonable arrangement (parallel rows, rows of rows and rows of rows and rows of people) can save the material as much as possible.