Forming process of fender based on NC incremental forming technology

The principle of NC incremental sheet metal forming and the forming process of the fender were introduced.The effect of process parameters on forming was analysed.The improvement method of the forming quality was suggested.The forming tool radius r and feed pitch h were the main process parameters in NC incremental forming of fender.Considering the interference,the larger forming tool radius r(r=5 mm) is advantageous to forming.The feed pitch h should be as small as possible in order to improve the surface quality and to make the deformation more uniform.But the forming efficiency shall be very low if feed pitch is too small.In general,the feed pitch of 0.25 mm is good.