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(1) Appearance features: curved mother line shape;
(2) Workpiece material: aluminum 1060
(3) Blank size: $520×1.2
(4) Forming tool: one SR (A, D.250, r10) hard spinning wheel, one rolled edge die, one curling die
(5) Blank speed: 540r/min
(6) Spinning wheel feed ratio: 1.0mm/r18
(7) Processing time: 3 min
(8) Processing sequence:
¢Ù Shearing spinning (point A) followed by multiple deep drawing spinning ¡ú ¢Ú Trimming ¡ú ¢Û Curling;
9) Processing points:
1) Pre-bend the outer edge of the rough piece to prevent wrinkling during spinning;
2) Start spinning by shearing to point A, and then use multiple passes of deep drawing and spinning;
3) Consider the shape of the profiling plate to make the forming at point A smooth transition;
4) During the deep drawing and spinning process, use a back pressure roller if necessary. But be careful to avoid damaging the material. Use a soft back pressure roller if necessary
5) Use a hard plastic spinning wheel and a steel core mold, or a steel spinning wheel and a resin core mold;
6) The trimming knife should be made at a 15¡ã bevel to facilitate the curling of the flange after cutting.
