Design of composite die for MP4 front shell with A1050 sheet material
According to the production requirements of the MP4 front shell,12 pairs of dies were designed for mass production,four kinds of mechanisms were designed in the die to form the diffi-cult forming features.The side punching slider mechanism was used to remove the burr in the lo-cal area of the straight wall of the shell,the side scraping mechanism was used to cut off parts of the straight wall at the hole edge,The fastener bending mechanism was used to shape the 90° bend-ing of the fastener,and the secondary forming slider mechanism was used for finishing and side punching of the fastener.The forming process layout was reasonable,the qualified rate of the fin-ished product could reach 98%,the die structure was simple and practical,and the manufacturing cost was low,which was equivalent to 72%of the cost of the progressive die scheme.Aiming at the characteristics of difficult forming features,the designed mechanism had reliable action and good practicability,which could provide references for designing die structure for similar parts.
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