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畢業(yè)設(shè)計/論文說明書目錄
緒 論 ---------------------------------------------- 1
第一章 零件的工藝性分析 -------------------------- 3
1.1 工件的結(jié)構(gòu)工藝性分析 -------------------------- 3
1.2 工件的尺寸精度和表面粗糙度的確定 -------------- 3
第二章 沖壓方案的擬訂 ------------------------------ 4
2.1 加工方案的確定 -------------------------------- 4
2.2 零件材料的分析 -------------------------------- 4
第三章 設(shè)計的主要計算 ----------------------------- 5
3.1排樣 ------------------------------------------- 5
3.2沖壓力的計算 ----------------------------------- 7
3.3確定壓力中心 ----------------------------------- 8
3.4凸，凹模刃口尺寸計算 -------------------------- 10
3.5卸料裝置的設(shè)計 -------------------------------- 11
第四章 主要零部件設(shè)計-----------------------------12
4.1 工作零件的結(jié)構(gòu)設(shè)計 -------------------------- 12
4.1.1 落料凸模設(shè)計 ---------------------------- 12
4.1.2 孔凸模設(shè)計 ------------------------------ 12
4.1.3 凹模設(shè)計 -------------------------------- 13
4.2 定位零件的設(shè)計 ------------------------------ 13
4.3 導(dǎo)料銷的設(shè)計 -------------------------------- 14
4.4 卸料部件的設(shè)計 ------------------------------ 14
4.4.1 卸料板的設(shè)計 ----------------------------- 14
4.4.2卸料螺釘選用 ------------------------------ 15
第五章 模具總體設(shè)計 ----------------------------- 16
5.1 模具類型的選擇 ------------------------------ 16
5.2 定位方式的選擇 ------------------------------ 16
5.3 卸料，出件方式的選擇 ------------------------ 16
5.4 導(dǎo)向方式的選擇 ------------------------------ 16
第六章 模架及其它零部件設(shè)計 -----------------------17
6.1 模架的設(shè)計 -----------------------------------17
6.2 圓柱銷設(shè)計 ---------------------------------- 18
6.3 模柄的設(shè)計 ---------------------------------- 18
6.4 模具總裝圖 ---------------------------------- 19
第七章 沖壓設(shè)備的選定 ----------------------------- 20
第八章 模具的裝配 -------------------------------- 21
第九章 模具典型零件機械加工工序卡 -------------- 22
設(shè)計總結(jié) ------------------------------------------- 25
致謝-------------------------------------------- 26
參考文獻----------------------------------------- 27
摘 要
本設(shè)計的題目是加工石英表鐵芯的級進模具，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，由于石英表鐵芯的面積較小，材料較薄并且Cr12硬度很高，中間橫梁的連接處寬度只有0.8mm，所以加工難度大設(shè)計困難。0.8mm的凸模不容易加工出來，所以采取級進模具加工（本副模具為2個工位）先沖孔，再用組合凸模經(jīng)過兩次送進完整的落料實現(xiàn)零件的成形，只有這樣才避免沖孔后直接落料0.8mm寬的橫梁的麻煩。
級進模具的精度要求很高導(dǎo)向要求十分精確，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。通過近三周的拼搏，本副級進模具設(shè)計終于完成。根據(jù)標(biāo)準(zhǔn)模架的選擇，制作凸凹模材料的選擇以及導(dǎo)向和送進精度的確定本模具所加工出的石英表鐵芯滿足要求，符合市場的需要。
由于設(shè)計者的能力所限，設(shè)計中的不足之處還有好多例如：材料利用率方面僅21%，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，石英表鐵芯兩邊大且不對稱，中間很窄所以排樣后材料利用率較低。還有多工位級進模具益采用四角導(dǎo)柱模架—《實用模具技術(shù)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中間導(dǎo)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(wù)大眾，服務(wù)社會。
關(guān)鍵詞:模具設(shè)計與制造，CAD軟件，工藝分析。
Mold design of the processing quartz form iron core
Summary
Topic 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.
Keyword：Mold design and making，CAD software，craft analysis.