Metal stamping parts grounding piece mould blade abrasion: feather size is too large or larger;
Flatness is not good.
Need to grind or replace the die.
No guide: guide pin or other positioning device is not working, feeder did not relax or guide pin size is differ, not correct guidance.
Positioning block wear, long distance.
Die too short: camber, chamfering, forming an incomplete.
Article out enough: material, the material on poor bending, stripping and mould puller, lengthen out.
Improper out: top pin configuration is undeserved, inappropriate or head had long spring force.
Adjust the elastic or a change in position or pin number: short pin mill to cooperate.
Feed the poor, guide plate length is differ, or guide material clearance is too large, or die and feeding machine deflection or die with feeder distance is too long.
Blanking deformation: part of the metal stamping ground lug bending parts can't allow material overlap, each fall, overcome by pressure pad.
Bending deformation: WanWanChu on crowded;
Close holes by tensile deformation.
Punching and shearing deformation: material distortion, size or eccentric asymmetry.
The impact deformation: products blow out air pressure is too strong or gravity drop impact deformation.
Metal stamping parts improper grounding piece of material: material width or thickness, material or material hardness is not appropriate, also can produce adverse.
Poorly designed: engineering arrangement is bad, bad gap setting, unless the change design, otherwise difficult to overcome metal stamping ground lug size variation.