筆記本電腦殼上殼沖壓模設(shè)計(jì)

筆記本電腦殼上殼沖壓模設(shè)計(jì),筆記本,腦殼,沖壓,設(shè)計(jì) V 畢業(yè)設(shè)計(jì)（論文） 鎂合金筆記本電腦外殼沖壓模具設(shè)計(jì) 摘 要 分析了筆記本電腦外殼的沖壓工藝，設(shè)計(jì)了一套用于液壓機(jī)上的結(jié)構(gòu)簡單的成形模。本文從產(chǎn)品的結(jié)構(gòu)和功能出發(fā)，介紹了各沖壓工序的模具結(jié)構(gòu)及工作過程。提出了模具設(shè)計(jì)及制造時(shí)應(yīng)注意的事項(xiàng)。分析鎂合金AZ31的性能，存在常溫下不可拉深的問題，通過對零件進(jìn)行詳盡的分析和查閱相關(guān)技術(shù)資料，設(shè)計(jì)了在拉深過程中對模具和零件進(jìn)行加熱的拉深模，這樣就很容易的解決了上述問題。該產(chǎn)品要在兩個(gè)方向進(jìn)行切邊，通過對產(chǎn)品進(jìn)行工藝分析，如果設(shè)計(jì)成兩個(gè)方向同時(shí)進(jìn)行切邊的復(fù)合模，則很難保證零件切邊部分的精度，所以分水平切邊和垂直切邊為兩個(gè)單獨(dú)的工序進(jìn)行，從而滿足產(chǎn)品的技術(shù)要求。 關(guān)鍵詞：筆記本電腦外殼，沖壓工藝，拉伸模，修邊模 Design of the Stamping Die for the Magnesium AZ31 Outer Shell of the Notebook PC Author: Bo Fengxia Tutor : Huang Changing Abstract The stamping process for the outer shell of the notebook PC is analyzed and a set of simply constructed forming die used on liquid-press was designed. The article introduces the structure and working process of the die on each operation from the structure and the function of the product. And the points for attention in the design and manufacture of the dies are listed. The efficiency of magnesium AZ31 is analyzed in sheet metal forming and that it can’t draw in normal temperature. The problem is resolved by heating the die and workpiece during drawing, after detailed analyzing and relative technical data consulting. The product has to be trimmed in two directions. After analyzing the technic of the product, we know: If the two directions are carried out at one time, it is hard to make sure the precision. On the contrary, if we make one direction at one time, it is easy to satisfy the technical requirement of the product. Key words: the outer shell of the notebook PC, stamping process, drawing die, trimming die 目 錄 1 緒論……………………………….…………………………………………….…1 1.1 選題背景及目的…………………………………….……..…………………1 1.2 國內(nèi)外研究狀況…………………………………….………………………..1 1.3 課題研究方法………………………………….……………………………..2 1.4 論文構(gòu)成………………………………….…………...……………………...2 2 沖壓工藝規(guī)程的編制 ………………………………….……………………..3 2.1 沖壓件的工藝分析 …………………………………………………………3 2.1.1 材料 ………………………………………………………………….4 2.1.2 結(jié)構(gòu)工藝性分析 ……………………………………………………5 2.2 毛坯形狀、尺寸的確定 ……………………………………………………6 2.2.1 盒形件的修邊余量 ………………………………….………………6 2.2.2 盒形件毛坯尺寸計(jì)算 ……………………………………………….7 2.3 排樣設(shè)計(jì)及材料利用率計(jì)算 ……….………………………………….…..8 2.3.1 排樣方式 ……………….………………….………………………...8 2.3.2 材料利用率計(jì)算 ……….…………………………………………...9 2.4 確定工藝方案 ……………………………………………………………….9 2.4.1基本工序的確定 ………………………………….…………………9 2.4.2不同工藝方案的比較 ……………………………………………….9 2.5 工藝計(jì)算 ……………………………………………………………………10 2.5.1 落料工序 …………………………………………………………...10 2.5.2 拉深工序 …………………………………………………………...11 2.5.3 沖孔工序 ……………………………………………………………12 2.5.4 修邊工序 ……………………………………………………………13 2.6 沖壓工藝過程卡片 ………………………………………………………...14 3 拉深模設(shè)計(jì) ……………………………………….…………………………..17 3.1 模具的結(jié)構(gòu)形式 ……………………………………….………………….17 3.2 模具刃口尺寸計(jì)算 …………………………………….…………………18 3.2.1 上下模刃口尺寸計(jì)算 …………………….……………………….18 3.2.2 壓力中心計(jì)算 ……………………………………………………..19 3.3 零件設(shè)計(jì)及標(biāo)準(zhǔn)件選擇 …………………………………………………..19 3.3.1 凸模的設(shè)計(jì) …………………………..……………………………19 3.3.2 凹模的設(shè)計(jì)…………………………………..….………………….21 3.3.3 定位板的計(jì) ………………………………...……………………...21 3.3.4 彈性壓圈的設(shè)計(jì) …………………………...………………………21 3.3.5 拉深筋的設(shè)計(jì)……………………………………………………….22 3.3.6 上下模座、導(dǎo)柱導(dǎo)套的設(shè)計(jì) …………………….……………….22 3.3.7 出件裝置的設(shè)計(jì) …………………………………………………..22 3.4 模具閉合高度的計(jì)算 ……………………………………………………...23 3.5 繪制裝配圖及零件圖 ……………………………….……………………..23 3.6 壓力機(jī)校核 ………………………………………….……………………..23 4 修邊模設(shè)計(jì) ……………………………………….…………………………...24 4.1 模具的結(jié)構(gòu)形式 ………………………………………..…………………24 4.2 壓力中心計(jì)算 …………………………………….……………………….25 4.3 零件設(shè)計(jì)及標(biāo)準(zhǔn)件選擇…………………………….………………………25 4.3.1 斜楔和滑塊的設(shè)計(jì) ………………………………………………..25 4.3.2 滑塊返回行程的復(fù)位機(jī)構(gòu) ………………….…………………….27 4.3.3 出件裝置的設(shè)計(jì) ……………………………….…………………..27 4.3.4 上模座的設(shè)計(jì) ……………………………………………………...28 4.3.5 下模座的設(shè)計(jì) ………………………………………………………28 4.3.6 壓料板的設(shè)計(jì) ………………………………………………………28 4.3.7 防磨板的設(shè)計(jì) …………………………….….…………………….29 4.3.8 導(dǎo)板的設(shè)計(jì) ………………………………….………………………29 4.4 模具閉合高度的計(jì)算 …………………………………………………….…29 4.5 裝配圖及零件圖的繪制 ………………………………………………….….30 4.6 壓力機(jī)校核 …………………………………………………………………..30 設(shè)計(jì)總結(jié) …………………………………………………………………………31 致謝 ………………………………………………………………………………32 參考文獻(xiàn) …………………………………………………………………………33