Metal stamping production, when the deep drawing attention points added items
Before the article the author discussed together with everybody in the design of metal stamping when deep drawing a note point, the authors add a few today, for the production of metal stamping drawing when encounter problems, we should be how to deal with.
1, metal stamping, deep drawing parts size should be marked on the map in a side, clear guarantee for designers is the internal dimension and external dimension, can't type annotation inside and outside size at the same time, not unified, will need to indicate the deep drawing parts with other stamping assembly relationship is reasonable;
2, for drawing the last line of a process, workpiece size, give priority to with concave die, clearance in order to decrease the size of punch, workpiece size, give priority to with punch, to increase the clearance die size.
3, judgment can reference when deep drawing a cracking reason: due to material quality problem of crack is serrated or irregular shape more, because of technology, mould and produce the fissure is compared commonly neatly;
4, to ensure the abrasion resistance and prevent stretch of deep drawing die scratches, intensive and blank holder ring must be hardening, can also be hard chrome plating or TD processing, to ensure the strength of the mold.
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