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南京工程學(xué)院 畢業(yè)設(shè)計(jì)開題報(bào)告 課 題 名 稱 電池彈片級(jí)進(jìn)模設(shè)計(jì) 學(xué) 生 姓 名 李 川 指 導(dǎo) 教 師 唐義鋒 所 在 學(xué) 院 江蘇財(cái)經(jīng)職業(yè)技術(shù)學(xué)院 專 業(yè) 名 稱 數(shù)控加工與模具設(shè)計(jì) 南京工程學(xué)院 2012 年 2 月 28 日 說 明 1 根據(jù)教育部對(duì)畢業(yè)設(shè)計(jì) 論文 的評(píng)估標(biāo)準(zhǔn) 學(xué)生必須撰寫 畢 業(yè)設(shè)計(jì) 論文 開題報(bào)告 由指導(dǎo)教師簽署意見 教研室審查 系教學(xué) 主任批準(zhǔn)后實(shí)施 2 開題報(bào)告是畢業(yè)設(shè)計(jì) 論文 答辯委員會(huì)對(duì)學(xué)生答辯資格審查的 依據(jù)材料之一 學(xué)生應(yīng)當(dāng)在畢業(yè)設(shè)計(jì) 論文 工作前期內(nèi)完成 開題報(bào)告 不合格者不得參加答辯 3 畢業(yè)設(shè)計(jì)開題報(bào)告各項(xiàng)內(nèi)容要實(shí)事求是 逐條認(rèn)真填寫 其中的 文字表達(dá)要明確 嚴(yán)謹(jǐn) 語言通順 外來語要同時(shí)用原文和中文表達(dá) 第 一次出現(xiàn)縮寫詞 須注出全稱 4 本報(bào)告中 由學(xué)生本人撰寫的對(duì)課題和研究工作的分析及描述 應(yīng)不少于 2000 字 沒有經(jīng)過整理歸納 缺乏個(gè)人見解僅僅從網(wǎng)上下載材 料拼湊而成的開題報(bào)告按不合格論 5 開題報(bào)告檢查原則上在第 8 周完成 各系完成畢業(yè)設(shè)計(jì)開題檢查 后 應(yīng)寫一份開題情況總結(jié)報(bào)告 學(xué)士學(xué)位畢業(yè)設(shè)計(jì) 論文 開題報(bào)告 學(xué)生姓名 李川 學(xué) 號(hào) 088810202017 專 業(yè) 數(shù)控加工與模具設(shè)計(jì) 指導(dǎo)教師 姓 名 唐義鋒 職 稱 教授 所在學(xué)院 江蘇財(cái)經(jīng)職業(yè)技術(shù)學(xué)院 課題來源 自擬課題 課題性質(zhì) 工程設(shè)計(jì) 課題名稱 電池彈片級(jí)進(jìn)模設(shè)計(jì) 畢業(yè)設(shè)計(jì)的 內(nèi)容和意義 1 主要內(nèi)容 本次畢業(yè)設(shè)計(jì)主要是針對(duì)產(chǎn)品結(jié)構(gòu)特性完成其成形工藝及模具設(shè)計(jì) 具體地說需 要完成如下各項(xiàng)任務(wù) 1 繪制產(chǎn)品零件圖 二維和三維 2 查閱資料并就自己承當(dāng)?shù)恼n題方向?qū)懗鲩_題報(bào)告 3 完成產(chǎn)品的工藝設(shè)計(jì)及模具設(shè)計(jì)并繪制模具及模具零件的工程圖 4 按規(guī)定格式和要求用 Word 打印畢業(yè)設(shè)計(jì) 論文 一份 5 用 PowerPoint 或其它軟件制作答辯提綱一份 如圖 1 2 意義 畢業(yè)設(shè)計(jì)是對(duì)即將步入社會(huì)的我們?cè)O(shè)計(jì)能力的一次全面考核 是從學(xué)習(xí)書本知識(shí) 向?qū)嶋H操作過渡的一個(gè)重要階段 目的在于培養(yǎng)我們獨(dú)立思考 動(dòng)手以及解決問題的 能力 從選定的課題入手 首先要仔細(xì)分析產(chǎn)品零件圖 只有對(duì)產(chǎn)品結(jié)構(gòu) 材料性能 有了透徹的了解 才能進(jìn)行初步設(shè)計(jì) 并逐層展開 最重要的我們能夠獨(dú)立思考與設(shè) 計(jì) 在老師的指導(dǎo)與工具資料的幫助下 能夠有更多的創(chuàng)造 更多屬于自己的成果 四年中我們所學(xué)的一切專業(yè)知識(shí)都將在這里得到運(yùn)用 這將是我們踏上工作道路的最 后一次演練 更是理論與實(shí)際相結(jié)合的實(shí)戰(zhàn)演練 文獻(xiàn)綜述 沖壓模水平狀況 沖壓是通過模具使板材產(chǎn)生塑性變形而獲得成品零件的一種成型工藝方法 沖壓 通常在冷態(tài)下進(jìn)行 因此也稱為冷沖壓 沖壓加工的原材料一般為板材或帶材 故也 稱為板材沖壓 沖壓廣泛應(yīng)用于金屬制品各行業(yè)中 尤其在汽車 儀表 軍工 家用電器等工業(yè) 中占有極其重要的地位 沖壓成型需要研究工藝 設(shè)備和模具三類基本問題 板材沖壓具有下列特點(diǎn) 1 材料利用率高 2 可加工薄壁 形狀復(fù)雜的零件 3 沖壓件在形狀和尺寸精度方面的互換性好 4 能獲得質(zhì)量輕而強(qiáng)度高 鋼性好的零件 5 生產(chǎn)率高 操作簡(jiǎn)單 容易實(shí)現(xiàn)機(jī)械化和自動(dòng)化 沖壓模具制造成本高 因此適合于大批量生產(chǎn) 對(duì)于小批量生產(chǎn) 多品種生產(chǎn) 常采用簡(jiǎn)易沖模 同時(shí)引進(jìn)沖壓加工中心等新型設(shè)備 以滿足市場(chǎng)求新求變的需求 板材沖壓常用的金屬材料有低碳鋼 銅 鋁 鎂合金及高塑性的合金鋼等 如前所述 材料形狀有板材和帶材 沖壓設(shè)備有剪床和沖床 剪床是用來將板材剪切成具有一定形狀的條料 以供后繼工 序使用 沖床可用于剪切及成形 1 1 2 國(guó)內(nèi)外模具現(xiàn)狀及發(fā)展趨勢(shì) 日本是世界第一大模具生產(chǎn)國(guó) 國(guó)內(nèi)有多家世界聞名的機(jī)床制造業(yè)廠家 加工模 具的高速加工中心 電加工機(jī)床 龍門銑床 精密磨床 數(shù)控系統(tǒng)等全都具備世界級(jí) 名牌 優(yōu)秀的機(jī)床制造業(yè)為模具制造奠定了堅(jiān)實(shí)的基礎(chǔ) 如在電子超精密模具中 集 成電路 微型電機(jī)模具精度已達(dá) 1 m 處于世界領(lǐng)先地位 IT 產(chǎn)業(yè)的產(chǎn)品 更新很快 如手機(jī)開發(fā)制造周期為 2 個(gè)月 產(chǎn)品試制期為 7 天 一般 7 套模具 150 兆 NC 數(shù)據(jù) 兩天就完成編程 計(jì)算機(jī)設(shè)計(jì)及制造技術(shù)都非常先進(jìn) 發(fā)達(dá)的汽車工業(yè)促進(jìn)了模具的發(fā)展 豐田汽車公司有專業(yè)模具設(shè)計(jì)人員近 200 名 制造人員 1000 多名 每年研制開發(fā)約 10 種轎車的整車模具 2000 套 從車身設(shè)計(jì)到新 車批產(chǎn)的整車模具設(shè)計(jì)制造周期為 1 年 標(biāo)準(zhǔn)單套模具制造周期不超過 4 個(gè)月 這樣 的規(guī)模及生產(chǎn)能力在世界上也稱得上是最大的汽車模具廠之一 或許是專業(yè)化的緣故 豐田僅自行制造車身內(nèi)外覆蓋件模具 其余 40 由日本著名的荻原 宮津 富士等模 具公 文獻(xiàn)綜述 司提供 日本模具專家曾強(qiáng)調(diào)模具加工五大要素 1 設(shè)備 2 CAD CAM 刀具路徑 3 CNC 裝置及伺服電機(jī) 4 加工條件及材料選擇 5 技術(shù)人員能力 日本模具生產(chǎn)的總的發(fā)展趨勢(shì)是 品種多樣化 變種變量生產(chǎn) 產(chǎn)品精密化 高速 高效率 高精度加工 加工精細(xì)化 微量切削 高速進(jìn)給 開發(fā)短期 化 高硬材料直接加工 減少后繼工序 綠色環(huán)境化 無切削液干式切削加工 目前日本大約有 12000 家模具公司 其中雇員 20 人以下的占 90 占產(chǎn)值的 40 近年來 隨著經(jīng)濟(jì)全球化 企業(yè)國(guó)際化的發(fā)展趨勢(shì) 日本在海外投資了許多模 具企業(yè) 把部分生產(chǎn)能力轉(zhuǎn)移至國(guó)外 如在我國(guó)獨(dú)資創(chuàng)建的無錫微研有限公司 擁 有員工 200 余名 精密數(shù)控模具加工設(shè)備 60 多臺(tái) 1998 年模具產(chǎn)值已超過 2 億元 人民幣 2000 年 3 月合資成立的上海荻原模具有限公司總投資 1455 萬美元 專業(yè) 設(shè)計(jì)制造汽車沖壓模具和大型覆蓋件模具 改革開放以來 隨著國(guó)民經(jīng)濟(jì)的高速發(fā)展 市場(chǎng)對(duì)模具的需求量不斷增長(zhǎng) 近 年來 模具工業(yè)一直以 15 左右的增長(zhǎng)速度快速發(fā)展 模具工業(yè)企業(yè)的所有制成分 也發(fā)生了巨大變化 除了國(guó)有專業(yè)模具廠外 集體 合資 獨(dú)資和私營(yíng)也得到了快 速發(fā)展 浙江寧波和黃巖地區(qū)的 模具之鄉(xiāng) 廣東一些大集團(tuán)公司和迅速崛起的 鄉(xiāng)鎮(zhèn)企業(yè) 科龍 美的 康佳等集團(tuán)紛紛建立了自己的模具制造中心 中外合資和 外商獨(dú)資的模具企業(yè)現(xiàn)已有幾千家 近年許多模具企業(yè)加大了用于技術(shù)進(jìn)步的投資力度 將技術(shù)進(jìn)步視為企業(yè)發(fā)展的重 要?jiǎng)恿?一些國(guó)內(nèi)模具企業(yè)已普及了二維 CAD 并陸續(xù)開始使用 UG Pro Engineer I DEAS Euclid IS 等國(guó)際通用軟件 個(gè)別廠家還引進(jìn)了 Moldflow C Flow DYN AFORM Optris 和 MAGMASOFT 等 CAE 軟件 并成功應(yīng)用于沖壓模的設(shè)計(jì)中 文獻(xiàn)綜述 參 考 文 獻(xiàn) 1 王孝培主編 沖壓手冊(cè) M 北京 機(jī)械工業(yè)出版社 1990 20 22 2 姜奎華主編 沖壓工藝與模具設(shè)計(jì) M 北京 機(jī)械工業(yè)出版社 1997 60 62 3 沖模設(shè)計(jì)手冊(cè)編寫組 沖模設(shè)計(jì)手冊(cè) M 北京 機(jī)械工業(yè)出版社 1998 150 154 4 鈑金沖壓工藝手冊(cè)編委會(huì)編著 鈑金沖壓工藝手冊(cè) M 北京 國(guó)防工業(yè)出版社 1989 167 172 5 沖壓工藝及模具設(shè)計(jì)編寫委員會(huì) 沖壓工藝及模具設(shè)計(jì) M 北京 國(guó)防工業(yè)出版 社 1993 54 55 6 候義馨 沖壓工藝及模具設(shè)計(jì) M 北京 兵器工業(yè)出版社 1994 62 65 7 盧險(xiǎn)峰 沖壓工藝模具學(xué) M 北京 機(jī)械工業(yè)出版社 1999 44 46 8 胡亞民 材料成形技術(shù)基礎(chǔ) M 重慶 重慶大學(xué)出版社 2000 15 17 9 劉湘云 鄒金統(tǒng)主編 冷沖壓工藝及模具設(shè)計(jì) M 北京 航空工業(yè)出版社 1994 16 17 10 陳尖嗣 郭景儀主編 沖壓模具設(shè)計(jì)與制造技術(shù) M 北京 北京出版社 1991 62 65 11 張鼎承主編 沖壓機(jī)械化與自動(dòng)化 M 北京 機(jī)械工業(yè)出版社 1982 92 95 12 張毅主編 現(xiàn)代沖壓技術(shù) M 北京 國(guó)防工業(yè)出版社 1994 102 105 13 許發(fā)樾主編 模具標(biāo)準(zhǔn)應(yīng)用手冊(cè) M 北京 機(jī)械工業(yè)出版社 1994 164 166 14 Tomesani L Analy of a tension driven M outsidein tube inversion Jouranl of Material Processing Technology Vol 64 1997 pp 397 386 15 郭成等 沖壓件廢次品的生產(chǎn)與防止 200 例 M 北京 機(jī)械工業(yè)出版社 120 122 16 Pearce R Sheet Matal Forming M Bristol philadelphia Adam hilger c1991 研究?jī)?nèi)容 1 設(shè)計(jì) 研究思路 本次設(shè)計(jì)按照工藝分析 工藝方案確定 模具結(jié)構(gòu)設(shè)計(jì)的思路進(jìn)行 2 課題研究的主要內(nèi)容 此工件材料采用黃銅 生產(chǎn)批量為大批量 需要用模具進(jìn)行生產(chǎn) 由于該零件有 2 個(gè) 2mm 和一個(gè) 3 12 的長(zhǎng)方形孔 而且有直線 圓弧組成的輪廓外形 因而模具包含 有沖孔 落料工序 對(duì)于 2 小孔 由于孔徑大于或者等于料厚 不屬于深孔沖裁 因此 在模具設(shè)計(jì)時(shí)沒有必要對(duì)沖孔小凸模采取適當(dāng)保護(hù)措施加以保護(hù) 也沒有必要對(duì)凸模進(jìn) 行強(qiáng)度校驗(yàn) 從材質(zhì)上看 沖裁材料銅母線為紫銅 屬低強(qiáng)度 高延伸性 高延伸率 塑性及流動(dòng)性好的軟材料 有利于成型 總體來說 該零件沖壓工藝性較好 1 方案對(duì)比 該工件包括落料 沖孔 彎曲 等基本工序可以采用以下三種工藝方案 方 案 一 落 料 沖 圓 孔 方 孔 再 彎 曲 單 工 序 模 生 產(chǎn) 方 案 二 沖 圓 孔 沖 方 孔 切 邊 彎 曲 落 料 級(jí) 進(jìn) 沖 壓 級(jí) 進(jìn) 模 生 產(chǎn) 方 案 三 落 料 沖 孔 彎 曲 復(fù) 合 模 沖 壓 復(fù) 合 模 生 產(chǎn) 2 方案分析 方案一模具結(jié)構(gòu)簡(jiǎn)單 制造周期短 但需要兩副模具 成本高而生產(chǎn)效率低 難以 滿足大批量生產(chǎn)的要求 方案二只需一副模具 生產(chǎn)效率高 精度也能滿足要求 模具制造工作量和成本比 較高 適合大批量生產(chǎn) 方案三只需一副模具 制件精度和生產(chǎn)效率都較高 且工件最小壁厚大于凸凹模許 用最小壁厚模具強(qiáng)度 通過對(duì)上述三種方案的分析比較 該工件的沖壓生產(chǎn)采用方案二最佳 研究?jī)?nèi)容 3 解決的關(guān)鍵問題 本課題采用 UG 進(jìn)行三維造型 用 AutoCAD 進(jìn)行二維繪圖 通過對(duì)零件結(jié)構(gòu) 尺 寸 材料性能的深入了解 確定了初步的工藝方案 通過計(jì)算得出該零件所需原料 尺寸 并考慮到彎曲帶來的影響 決定了不同位置的孔的沖裁順序 由此確定了完 整的工藝方案 在零件結(jié)構(gòu)尺寸設(shè)計(jì)中 由產(chǎn)品結(jié)構(gòu)決定了凸模 凹模 固定板墊 板等零件形狀 模架采用中間導(dǎo)柱模架 4 預(yù)期成果 1 產(chǎn)品零件二維圖 三維造型圖 2 開題報(bào)告一份 畢業(yè)設(shè)計(jì)的內(nèi)容和意義 文獻(xiàn)綜述 研究?jī)?nèi)容 研究計(jì) 劃 特色與創(chuàng)新 3 模具裝配圖及各零件圖 4 設(shè)計(jì)說明書一份及光盤 研究計(jì)劃 第 1 2 周 1 熟悉課題 查閱并收集有關(guān)資料 為寫開題報(bào)告做準(zhǔn)備 2 繪制產(chǎn)品零件圖 3 完成工藝性分析 提出設(shè)計(jì)方案 第 3 6 周 1 寫出開題報(bào)告初稿 2 完成工藝計(jì)算 3 完成模具零件結(jié)構(gòu)形式確定及設(shè)計(jì) 選擇設(shè)備 第 7 8 周 1 第 4 周完成開題報(bào)告的最后定稿 2 繪制模具草圖 第 9 12 周 繪制模具裝配圖及各設(shè)計(jì)件零件圖 第 13 15 周 編寫設(shè)計(jì)說明書 打印并準(zhǔn)備答辯 第 16 周 打印畢業(yè)設(shè)計(jì)資料并準(zhǔn)備答辯 特色與創(chuàng)新 本模具設(shè)計(jì)中應(yīng)用了大量的二維繪圖軟件和少量的三維立體軟件 使產(chǎn)品更具直觀性 便于設(shè)計(jì)和制造 指導(dǎo)教師 意 見 指導(dǎo)教師簽名 2012 年 3 月 2 日 教研室 意 見 主任簽名 2012 年 3 月 5 日 學(xué)院意見 教學(xué)院長(zhǎng)簽名 2012 年 3 月 5 日 南 京 工 程 學(xué) 院 畢業(yè)設(shè)計(jì) 論文 選題 審題表 教研室 模具 指導(dǎo)教師 唐義鋒 職稱 教授 申報(bào)課題名稱 電池彈片級(jí)進(jìn)模設(shè)計(jì) 課題性質(zhì) A 課題來源 D 該產(chǎn)品是一帶孔的彎曲件 需要折彎 沖孔等多道工序完成 需 要制定合理的沖壓工藝 選擇合適的模具結(jié)構(gòu) 因此本課題具有一定 的難度和較大的工作量 課 題 簡(jiǎn) 介 所需經(jīng)費(fèi) 上機(jī)時(shí) 數(shù) 課題要求 包括所具 備的條件 要求課題承擔(dān)者具有沖壓模具設(shè)計(jì)與制造的基本知識(shí)和較熟練的 二維軟件的應(yīng)用能力 并具備一定的三維軟件的應(yīng)用基礎(chǔ) 我院模具專業(yè)的學(xué)生已經(jīng)系統(tǒng)的學(xué)完 沖壓工藝與模具設(shè)計(jì) 模具制造工藝 Auto CAD 等相關(guān)課程 并且絕大多數(shù)同學(xué)已經(jīng)經(jīng) 過 Proe 或 UG 的培訓(xùn) 已具備完成該課題的基本條件 課題工作量 要求 1 開題報(bào)告 含本課題任務(wù)分析 文獻(xiàn)綜述 本課題的主要研究方 法及工作計(jì)劃等 2 模具工程圖 折合 2 3 張 A0 圖紙 產(chǎn)品三維圖 3 畢業(yè)設(shè)計(jì)論文 須電子文檔 4 畢業(yè)設(shè)計(jì)內(nèi)容光盤一張 教研室 審定意見 室主任簽字 學(xué)院領(lǐng)導(dǎo)小 組審定意見 教學(xué)院長(zhǎng)簽字 說明 1 該表為畢業(yè)設(shè)計(jì) 論文 課題申報(bào)時(shí)專用 由選題教師填寫 經(jīng)教研室討論 室主 任 簽字 報(bào)學(xué)院領(lǐng)導(dǎo)小組審定 院長(zhǎng)簽字后生效 2 課題性質(zhì) A 工程設(shè)計(jì) 工程技術(shù)研究 C 軟件工程 如 CAI 課題 D 文獻(xiàn)型綜述 E 其它 3 課題來源 A 自然科學(xué)基金與部 省 市級(jí)以上科研課題 B 企 事業(yè)單位 委托課題 C 院級(jí)基金課題 D 自擬課題 4 上 機(jī) 時(shí) 數(shù) 可 填 xx 時(shí) 數(shù) 人 或 者 該 課 題 所 需 總 時(shí) 數(shù) 5 選 題 結(jié) 束 后 該 表 要 求 統(tǒng) 一 存 放 在 學(xué) 院 辦 公 室 備 查 南 京 工 程 學(xué) 院 高 等 教 育 自學(xué)考試 畢業(yè)生學(xué)士學(xué)位申請(qǐng)表 承辦學(xué)院 江蘇財(cái)經(jīng)職業(yè)技術(shù)學(xué)院 專業(yè) 數(shù)控加工與模具設(shè)計(jì) 姓 名 李川 性 別 男 身份證號(hào) 32032219890217505X 聯(lián)系電話 15152824265 準(zhǔn)考證號(hào) 088810202017 班 級(jí) 10 模具 本 入學(xué)年月 2010 年 5 月 畢業(yè)年月 2012 年 9 月 外 語 情 況 國(guó)家大學(xué)英語四級(jí)考試成績(jī)達(dá)到授予標(biāo)準(zhǔn) 國(guó)家組織的本科段自學(xué)考試英語成績(jī)達(dá) 70 分及以上 本科畢業(yè) 證書編號(hào) 擬申報(bào)學(xué)士學(xué)位科類名稱 工學(xué)學(xué)士 申報(bào)材料 目錄 1 學(xué)習(xí)成績(jī)單 2 外語情況 欄目中材料原件及復(fù)印件 3 身份證復(fù)印件 4 在校期間無違紀(jì) 如考試作弊等 行為 承辦學(xué)院蓋章 年 月 日 南京工程學(xué)院自考辦推薦意見 蓋章 年 月 日 學(xué)位證書號(hào)碼 Die Life of cold stamping die and mprovements Overview of stamping die Stamping Die Stamping in the cold the material metal or non metallic processing into parts or half of a special technical equipment called cold stamping die commonly known as Die Press is at room temperature using the die installed in the press to put pressure on the material to produce a separation or plastic deformation and thus to obtain the necessary parts of a pressure processing method Stamping die in the form of many the general categories according to the following main features 1 According to the technical nature of 1 Die along the closed or open contour the material are derived from mold If blanking die punch die cut off the mold cut mode cutting mode split mode etc 2 bending mode to blank or blank sheet along a straight line curved line to bend deform and thus obtain a certain angle and shape of the workpiece in the mold 3 The drawing die is made of the blank sheet opening hollow or hollow pieces of further changes to the shape and size of the mold 4 Die rough or semi finished workpiece is convex according to plan direct copy the shape of the die shape the material itself generate only local plastic deformation of the mold Such as the bulging mode reducing the die expansion die forming die rolling flanging mold plastic mold 2 According to the degree classification process combination 1 single process model in a press tour just completed a die stamping process 2 composite model is only one station in a press tour at the same station at the same time to complete more than two or two die stamping process 3 Progressive Die also known as the modulus of continuity in the feeding direction rough with two or more of the station at the press of a visit work in different places on the completion of two or two successive Road over stamping die process Chong called cold stamping die Die wide Cold stamping die is used in cold stamping die mold industry and accessories required for high performance structural ceramic materials preparation methods high performance ceramic materials molds and accessories from the zirconium oxide and yttrium aluminum powder increases Pr element composition Preparation is the solution of zirconia yttria solution praseodymium oxide solution according to a certain percentage of alumina solution when mixed liquor ammonium bicarbonate infusion by co precipitation synthesis of ceramic materials molds and accessories needed for raw materials reaction precipitate generated by the treatment drying calcining and accessories by high performance ceramic mold material superfine powder and then after forming sintering finishing they will have high performance ceramic materials molds and accessories Advantages of this invention is the invention made of cold stamping dies and parts and long service life the process does not appear in the press and its parts and stamping die bond generated the phenomenon of stamping surface is smooth no glitches can replace traditional high speed steel tungsten steel Die with the main parts Die stamping tools is the main process equipment stamping rely on the relative movement under the mold completed Processing time because the upper and lower mold between the constant division and if continued operation of the fingers of workers to enter or remain in the mold closed there will certainly pose a serious threat to their personal safety A of the mold main parts function and safety requirements 1 Working parts is a direct punch to blank forming the working parts therefore it is the key to mold parts Punch not only sophisticated and complex it should meet the following requirements 1 be of sufficient strength can not be broken or destroyed during stamping 2 should be appropriate to its material and heat treatment requirements to prevent too high hardness and brittle fracture 2 Positioning parts positioning part is to determine the location of the parts installed blank there are pins board gauge pin plate lead is sold guide plate knife set from the side side pressure etc Design should be considered when positioning parts easy to operate and should not have had orientation location to facilitate observation preferably in the forward position contouring to correct the pin location and positioning 3 Binder unloading and discharging parts binder components are blank holder binder board Blank holder pressure can drawing blank holder force thereby preventing billets under the action of the tangential pressure arch formed folds The role of pressure plate to prevent movement and bounce blank Top of the device discharge board s role is to facilitate the pieces and clean up waste Them by the spring rubber and equipment putting on the air cushion support can move up and down knocking out pieces of the design should have enough top output movement to the limited spaces Stripper plate area should be minimized or closed position in the operating groove milling out empty handed Exposure of the stripper plate should have protection around the plate to prevent finger inserted into or foreign objects inside exposed surface edges should be blunt down 4 Guide parts and guide sleeve guide pin is the most widely used part of a guide Its role is to ensure punch the punching clearance when accurate match Therefore the guide posts guide cover the gap should be less than the blanking clearance Guide Post located next mold base to ensure that the stroke bottom dead center the lead column in the template on the face over the top for at least 5 to 10 mm Guide columns should be arranged far away from the module and the pressure plate in the area so the operator s arms do not get to take over the lead column material 5 Supporting and clamping the upper and lower parts which includes templates die handle fixed plate punch plate stopper etc Up and down the template is the basis of the cold die parts other parts are respectively fixed at the top Template plane size especially around the direction to be compatible with the workpiece too large or too small are not conducive to action Some molds blanking punching type mold to the pieces of convenience be set up under the mold plate At this time the best and the template plate connected between the screw the two plate thickness should be absolutely equal Plate spacing out the pieces to be able to prevail not too much so as not to break the template 6 Fastening parts which includes screws nuts springs pins washers etc are generally used standard parts Die more with the amount of standard parts design choice and flexibility should be tightened to ensure the top out of the need to avoid exposure to the surface fastener operating position the staff and impede operation to prevent bumps Die with the development of Since reform and opening with the rapid development of the national economy the market demand with the growing Die In recent years Die with the industry has been around 15 growth rate of the rapid development of industrial enterprises with ownership Die components also changed dramatically in addition to the professional mold factory outside of state owned collective joint ventures wholly owned and private has been a rapid development As with the accelerating pace of international integration the increasing competition in the market it has been increasingly recognized product quality cost and new product development capacities The cold die manufacturing is the most basic elements of the chain one of the cold die manufacturing technology to measure a country s manufacturing sector has become an important symbol of the level and largely determine the viability of enterprises Die with enterprises to increase in recent years many technological advances for investment technological progress will be seen as an important driving force for enterprise development Some domestic enterprises have popularized the two dimensional mold CAD and gradually began to use UG Pro Engineer I DEAS Euclid IS and other international common software individual manufacturers have also introduced Moldflow C Flow DYNAFORM Optris and MAGMASOFT etc CAE software and successfully applied in stamping die design A car cover mold as the representative of a large stamping die manufacturing technology has made great progress Dongfeng Motor Corporation mold factory mold manufacturers such as FAW mold center has been able to produce some car cover mold In addition many research institutions and universities to carry out technology research and development of mold After years of effort in the mold CAD CAE CAM technology has made remarkable progress in improving quality and reducing mold die design and manufacturing cycle and so contributed Although China Die with the industry over the past decade has made remarkable development but in many ways compared with the industrialized countries there is still a large gap For example the precision machining equipment processing equipment in Die with the relatively low proportion CAD CAE CAM technology penetration is not high many advanced mold technology not widely so resulting in a considerable number of large sophisticated complex and long Die life with dependence on imports With the continuous progress of science and technology modern industrial production of increasingly complex and diverse product performance and quality is ever increasing thus the cold stamping technology put forward higher requirements In order to adapt to the cold stamping technology industry needs cold stamping technology itself also in innovation and development cold stamping technology idea is to improve and expand as much as possible the advantages of the cold stamping process to overcome its shortcomings in the cold stamping technology development should note the following aspects 1 cold stamping technology process parameters should be properly identified and Die with the work of some of the shape and size to improve the quality of stamping parts and shorten the new product production cycle should be in strengthening the metal forming the basis of theoretical studies to metal forming theory to practice can produce a direction and gradually establish a close connection with the actual production of the advanced process of calculation abroad have begun to use plastic finite element method automobile parts forming process of the stress and strain analysis and computer simulation to predict the forming part of a process plan on the possibilities and potential problems 2 to accelerate product replacement mold design to overcome the shortcomings of a long cycle Should vigorously carry out computer aided design and manufacture of molds CAD CAM Research In my country paying particular attention to strengthening the multi position progressive die CAD CAM Technology 3 to meet the needs of mass production and reduce labor intensity Should strengthen cold stamping of mechanized and automated so that the average small pieces of high speed presses in a multi position progressive die production production reached a high degree of automation to further improve stamping productivity 4 expand the scope of application of cold stamping production So cold pressing both suitable for mass production but also for small batch production both the general accuracy of product production but also can produce precision parts Should pay attention to development such as fine blanking especially thick material fine blanking forming high energy soft mold forming pressure and processing new superplastic forming process but also promote the easy mode soft mode and the low melting point alloy mold Universal Hybrid model the use of CNC punch press and other equipment In addition the performance improvement of sheet metal stamping mold new material die development of new processing methods should be further strengthened Die with life and Countermeasures Die with the life of the workpiece by punching out the number of terms Many factors affect the life Die There are die structure design manufacture molds used in the punch and die materials die quality and surface hardening heat treatment precision die manufacturing parts and cold stamping materials selection In addition there are die installation adjustment use and maintenance 1 Die Design on Life 1 Layout design of layout methods and take the boundary value a great impact on the die life too small to take the boundary value often causing rapid wear and convex mold die bite wounds on the Starting from material savings take the boundary value smaller the better but take the edge is less than some value the cut surface of the mold and the quality of life adversely There will be left behind in the blanking die Q gap were to produce spare parts glitch or even damage the die edge reduce die life Therefore consider increasing the material utilization of the same time parts must yield quality and life expectancy to determine the layout methods and take the boundary 2 die structure prone to stress concentration on the cracking of the die structure composite structure can be used or mosaic structure and prestressed structure to enhance the mold life 3 the impact of clearance when the gap is too small compressed extrusion of interest increased friction increased wear the wear side of aggravated discharge and push pieces after blanking time materials and convex the friction between die will cause wear and tear than the end edge on the side of the grinding much but also easily lead to convex concave mold temperature is high the adsorption of metal debris in the side edge to form a metal tumor so that male and female die chipping or expansion occurs crack phenomenon Therefore the gap is too small to Die Life very bad Gap is too large will increase the punch and the die face the edge of the concentration of stress resulting in a sharp increase in stress so blade edge quickly lose angular yield deformation Therefore addition of blanking force thereby enabling faster edge edge wear reduce die life But in order to reduce the male and female die wear extending mold life while ensuring quality of stamping pieces under the premise that larger space designed properly it is necessary 4 Die oriented structure of the life of a reliable guide for the working parts reduce wear prevent male and female die bite wound is very effective In particular non small Q gap Q gap or Die compound die and multi position progressive die even more important To improve the die life must be based on processes and the demand of precision the correct choice oriented form and orientation accuracy the choice should be higher than the accuracy oriented convex concave mold with precision 5 the impact of cold stamping materials cold stamping materials selected should meet the design requirements of workpieces and stamping process requirements or easy to mold damage and reduce mold life Poor surface quality of cold stamping punching cracking when the workpiece is also easy to scratch mold Bad cold stamping plastic materials deformation is small easy to press when the workpiece rupture but also easy to scratch mold In addition the material thickness tolerances shall comply with national standards Die because of a certain thickness of material suitable for forming bending flanging drawing die of the male and female die structure gap is directly determined by the thickness of the material Therefore uneven thickness will result in waste generation and mold damage 2 Die Die Life of Die Die Life of a mold material properties chemical composition structure hardness and comprehensive reflection of metallurgical quality Among them the material properties and heat treatment affect the quality of the most obvious Mold material properties on the impact of die life is great If the same workpiece using a different mold material of the bending test the test results The 9Mn2V material the life of 5 million with Crl2MoV nitriding the life of up to 40 million Therefore the choice of materials the batch size should be based on workpiece rational use of mold materials The hardness of the die parts to Die Life a great impact But not the higher hardness longer die life This is because the hardness and strength toughness and abrasion resistance are closely related Some die demands of high hardness long life Such as the use of T10 steel dies hardness 54 58HRC only washed thousands of times a burr on the workpiece great If the hardness to 60 64HRC the grinding life of up to 2 to 3 million However if continue to improve hardness fracture occurs earlier Some die hardness should not be too high as the die manufacturing using Crl2MoV 58 62HRC hardness the general life of 2 3 million invalid form of chipping and cracking and if the hardness down to 54 58HRC life expectancy increased to 5 60 000 but decreased to 50 53HRC hardness appears easy to blunt the die edge phenomenon Thus mold hardness must be based on material properties and failure modes may be Should enable the hardness strength toughness and wear resistance resistance to fatigue strength needed to achieve a particular stamping process the best match 3 The surface of the mold heat treatment to strengthen the quality and impact on life Mold heat treatment the nature and quality of life of the mold a great impact Practice shows that the die parts of the quenching distortion and cracking early fracture during use while the metallurgical and materials quality forging quality mold structure and process related but related more to die of heat treatment According to statistical analysis of failure causes of mold heat treatment failure due to improper accounting for more than 50 Practice shows that the mold material must be accompanied by high heat treatment process properly can really play a material s potential Parts surface hardening mold work purpose is to obtain the effect of external hard tough inside so be hardness wear resistance toughness good resistance to fatigue with Many ways to die surface hardening surface treatment technology of new technologies developed rapidly In addition to Nitrocarburizing and ion nitride boride seepage niobium vanadium permeability hard chrome plated and spark strengthening the chemical vapor deposition CVD and physical vapor deposition PVD has been gradually adopted By CVD and PVD treatment the mold surface covered with super hard material such as TiC TiN etc High hardness wear resistance corrosion resistance adhesion is very good can improve the die life several times to several times 4 Manufacturing precision of the die parts of die life Precision die manufacturing and life in it in particular mold surface roughness on the mold a great impact If using Crl2MoV steel blanking die if the surface roughness value R 1 6 m its life span is about 30 000 Such as polished by the precision surface roughness value R 0 4 m life can be increased to 4 5 million Therefore the working parts of the mold surface the general must go through grinding grinding polishing and other finishing and fine processing 5 Other aspects of the impact of die life 1 Press the accuracy is not high but also easy to make die damage 2 die in the press or not installed properly and the operator s technical level on the tool life is also greatly affected 3 dies in the custody and maintenance of good and bad and the use of lubricant condition also affects mold life 6 Conclusion In actual production sheet metal dies for use rare case of non normal wear and tear But when the die plate was found prone to irregular wear we always study for the problems summarized Because of a cold die from the design manufacture assembly commissioning and installation and use all spent many hours while the convex die die material used mostly high quality alloy steel Therefore the die cost is relatively high Therefore in the production of understanding the factors that affect the die life and take the appropriate measures to guide the production of great practical significance