3362 上端蓋復(fù)合模的設(shè)計

3362 上端蓋復(fù)合模的設(shè)計,上端,復(fù)合,設(shè)計 （加工上端蓋的模具設(shè)計） 中文摘要本設(shè)計的題目是加工上端蓋的拉深模具，通過對方案的選擇排樣的計算，拉深力的計算和拉深力中心確定的計算以及凸凹模刃口的計算等使本副模具基本符合拉深要求，由于上端蓋的面積較大，材料為 20 鋼硬度很低，拉深性能較好，上端蓋上部為圓錐面，邊緣容易起皺，且在凸模的頂部容易拉裂。下部為圓筒形件的拉深，邊緣需要反拉深。但拉深制件的高度較小，直徑較大，其高徑比較小，可以采用一次拉深成形。所以，可以將模具設(shè)計為正、反拉深復(fù)合模具，將制件一次拉深成形，提高生產(chǎn)率。再用切邊凸模進行切邊，去除廢料。完成制件的成形。復(fù)合模具的精度要求較高，導(dǎo)向精度要求較精確，在設(shè)計本副模具時遇到很大的阻力經(jīng)過對各方案的選擇和排除最終才選擇此方案。通過近階段的努力，本副正、反拉深復(fù)合模具設(shè)計終于完成。模架的選擇，制作凸凹模和切邊凸模材料的選擇以及導(dǎo)向和毛坯定位的確定，本模具所加工出的上端蓋滿足要求，符合顧客的要求。由于設(shè)計者的能力所限，設(shè)計中尚有不足之處，請各位老師給予指導(dǎo)。本模具的拉深力大。由于制件無精度要求，在保證制件質(zhì)量的前提下選擇了四角導(dǎo)柱模架。關(guān)鍵詞: 四角導(dǎo)柱模架，上端蓋，起皺，拉裂。 （畢業(yè)設(shè)計/論文英文題目） 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 market's 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 good benefit and serve the general public to invest the market while believing a mould soon, serve the society.Key words: upper and cover , lifting , drawing .