3386 石英表墊片模具設計

3386 石英表墊片模具設計,石英表,墊片,模具設計 加工石英表墊片的模具設計 摘 要本設計的題目是加工石英表墊片的級進模具，通過對方案的選擇排樣的計算，沖壓力的計算和壓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沖壓要求，由于石英表墊片的面積較小，材料較薄并且 H62 硬度很低，所以采取級進模具加工（本副模具為 2 個工位）先沖孔，再用凸模經(jīng)過兩次送進完整的落料實現(xiàn)零件的成形。級進模具的精度要求很高導向要求十分精確，在設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。通過近三周的拼搏，本副級進模具設計終于完成。根據(jù)標準模架的選擇，制作凸凹模材料的選擇以及導向和送進精度的確定本模具所加工出的石英表墊片滿足要求，符合市場的需要。由于設計者的能力所限，設計中的不足之處還有好多例如：材料利用率方面僅 29.8%，會對經(jīng)濟效益有影響，但材料利用率的大小由工件形狀和排樣決定，石英表墊片兩邊大且不對稱，中間很窄所以排樣后材料利用率較低。根據(jù)《實用模具技術手冊》 ，本模具的沖裁力不大精度基本能保證的前提下選擇了對角導柱模架。相信不久本模具投入市場一定能帶來很好的效益服務大眾，服務社會。關鍵詞：級進模、排樣、壓力中心. Mold design of the processing quartz form bolster core SummaryTopic that design originally to process quartz form grade bolster of core enter mould , rank the calculation of kind through the choice 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 bolster core is relatively small, the material is very more small in hardness than thin and H62, so adopt grade enter the mould and process (this pair of moulds are for 2 pieces of engineering location ) and wash holes first , and then send to blanking and realize the taking shape of the part twice by making the protruding mould up。 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 bolster 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 29.8%, 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 bolster core both sides are large and asymmetric, the material utilization ratio is relatively low after the middle is very narrow to arranges kind. According to《practical mould technical manual》, the blanking strength of this mould leads the post mould shelf opposite angles 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: transfer mold、 scheme、pressure centre。