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上端 冲压 复合 模具 设计

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上端盖冲压复合模具的设计,上端,冲压,复合,模具,设计

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（加工上端盖的模具设计） 中文摘要本设计的题目是加工上端盖的拉深模具，通过对方案的选择排样的计算，拉深力的计算和拉深力中心确定的计算以及凸凹模刃口的计算等使本副模具基本符合拉深要求，由于上端盖的面积较大，材料为20钢硬度很低，拉深性能较好，上端盖上部为圆锥面，边缘容易起皱，且在凸模的顶部容易拉裂。下部为圆筒形件的拉深，边缘需要反拉深。但拉深制件的高度较小，直径较大，其高径比较小，可以采用一次拉深成形。所以，可以将模具设计为正、反拉深复合模具，将制件一次拉深成形，提高生产率。再用切边凸模进行切边，去除废料。完成制件的成形。复合模具的精度要求较高，导向精度要求较精确，在设计本副模具时遇到很大的阻力经过对各方案的选择和排除最终才选择此方案。通过近阶段的努力，本副正、反拉深复合模具设计终于完成。模架的选择，制作凸凹模和切边凸模材料的选择以及导向和毛坯定位的确定，本模具所加工出的上端盖满足要求，符合顾客的要求。由于设计者的能力所限，设计中尚有不足之处，请各位老师给予指导。本模具的拉深力大。由于制件无精度要求，在保证制件质量的前提下选择了四角导柱模架。关键词: 四角导柱模架，上端盖，起皱，拉裂。 （毕业设计/论文英文题目） Mold design of the processing quartz form iron core SummaryTopic that design originally to process quartz form grade , iron of core enter mould , rank the calculation of kind through the choice to the scheme, it makes this pair of moulds accord with the request of pressing basically to press calculation , calculation which the pressure centre confirm and calculation of the protruding concave mould blade of strength ,etc., because the area of the quartz form iron core is relatively small, the material is very more high in hardness than thin and Cr12, there is only 0.8mm in the width of junction of the middle crossbeam , so process the degree of difficulty and design the difficulty greatly. The protruding mould of 0.8mm is not easy to process out, so adopt grade enter the mould and process (this pair of moulds are for 3 pieces of engineering location ) and wash holes first , and then send to intact blanking and realize the taking shape of the part twice by making the protruding mould up, only in this way avoid washing the trouble of the direct blanking 0.8mm wide crossbeam after holes. Grade enter precision of mould expect very much and lead demanding to be very accurate, the obstruction that it is very great to meet while designing this pair of moulds is through and gets rid of and chooses this scheme to the choice of every scheme finally. Through the striving of nearly three weeks, this each enters mold design to finish at last. According to the choice of the standard mould shelf, choice , direction and quartz form iron core processed of a mould of sureness sent to the precision of making protruding concave mould material meet the demands, meet markets needs. The because designer one it restrict with ability, have much weak point in design for example: The material utilization ratio is only 21%, will influence economic benefits, but the size of the material utilization ratio and arranges one kind of decisions by the form of the work piece, the quartz form iron core both sides are large and asymmetric, the material utilization ratio is relatively low after the middle is very narrow to arranges kind. There is many workers location grade that enters benefit of the mould and adopts four mao and leads the post mould shelf - practical mould technical manual , the blanking strength of this mould leads the post mould shelf the middle not quite choosing under the prerequisite that the precision can be guaranteed basically. Can unquestionably bring very g