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============================================喜歡這套資料就充值下載吧。。。資源目錄里展示的都可在線預(yù)覽哦。。。下載后都有，，請(qǐng)放心下載，，文件全都包含在內(nèi)，，【有疑問咨詢QQ:1064457796 或 1304139763】
============================================
（2007屆）
本科生畢業(yè)設(shè)計(jì)（論文）資料
學(xué) 院、系：
機(jī)械工程學(xué)院
專 業(yè)：
機(jī)械設(shè)計(jì)制造及其自動(dòng)化
學(xué) 生 姓 名：
宋 璐
班 級(jí)：
機(jī)本0302
學(xué)號(hào) 26030213
指導(dǎo)教師姓名：
曾立平
職稱 教授
最終評(píng)定成績(jī)：
湖南工業(yè)大學(xué)教務(wù)處
二○○六年九月制
目 錄
第一部分 過程管理資料
一、畢業(yè)設(shè)計(jì)（論文）課題任務(wù)書 3
二、本科畢業(yè)設(shè)計(jì)（論文）開題報(bào)告 5
三、本科畢業(yè)設(shè)計(jì)（論文）進(jìn)展情況記錄 9
四、本科畢業(yè)設(shè)計(jì)（論文）中期報(bào)告 11
五、畢業(yè)設(shè)計(jì)（論文）指導(dǎo)教師評(píng)閱表 12
六、畢業(yè)設(shè)計(jì)（論文）評(píng)閱教師評(píng)閱表 13
七、畢業(yè)設(shè)計(jì)（論文）答辯及最終成績(jī)?cè)u(píng)定表 14
第二部分 設(shè)計(jì)說明書
八、設(shè)計(jì)說明書 15
- 18 -
2007屆
本科生畢業(yè)設(shè)計(jì)（論文）資料
第一部分 過程管理資料
2007屆畢業(yè)設(shè)計(jì)（論文）課題任務(wù)書
院(系)：機(jī)械工程學(xué)院 專業(yè)：機(jī)械設(shè)計(jì)制造及其自動(dòng)化
指導(dǎo)教師
曾立平
學(xué)生姓名
宋璐
課題名稱
帶槽三角形固定板沖孔、沖槽、落料連續(xù)模設(shè)計(jì)
內(nèi)
容
及
任
務(wù)
一．設(shè)計(jì)內(nèi)容：
帶槽三角形固定板沖圓孔、沖槽、落料連續(xù)模設(shè)計(jì)要保證規(guī)定的生產(chǎn)效率和高質(zhì)量的沖壓件的同時(shí)，力求成本低模具壽命長(zhǎng)。
1、方案分析與論證；
2、總體結(jié)構(gòu)設(shè)計(jì)；
3、零部件的結(jié)構(gòu)設(shè)計(jì)與計(jì)算。
二．設(shè)計(jì)任務(wù)：
1、排樣圖的形式、主要尺寸和參數(shù)；
2、模架、壓力機(jī)的結(jié)構(gòu)型式和主要尺寸的確定；
3、總體設(shè)計(jì)的分析與各部件的布置；
4、用AUTOCAD編制二維工程圖。
擬
達(dá)
到
的
要
求
或
技
術(shù)
指
標(biāo)
一．總體設(shè)計(jì)要求：
1、工作可靠，結(jié)構(gòu)簡(jiǎn)單，裝卸方便，便于維修、調(diào)整；
2、盡量使用通用件，以便降低制造成本；
3、在保證功能和強(qiáng)度的要求下，盡量減少整備質(zhì)量。
二．說明書及圖紙要求：
1、設(shè)計(jì)說明書1份，達(dá)1.5萬字以上，且要符合規(guī)范要求：資料數(shù)據(jù)充分，標(biāo)明數(shù)據(jù)出處；計(jì)算過程詳細(xì)、完全；公式的字母含義應(yīng)標(biāo)明，有時(shí)還應(yīng)標(biāo)注公式的出處；內(nèi)容條理清楚，按步驟書寫；
2、設(shè)計(jì)圖樣全部用AutoCAD繪制，總的繪圖量達(dá)3張A0以上，其中：至少裝配圖1張。
進(jìn)
度
安
排
起止日期
工作內(nèi)容
07年1－3周
在校學(xué)習(xí)，做前期準(zhǔn)備
第4周
搜集設(shè)計(jì)相關(guān)資料，整體規(guī)劃設(shè)計(jì)全過程，方案論證
第5－6周
排樣圖及相關(guān)參數(shù)的確定
第7－8周
模架及壓力機(jī)和模座的選定及參數(shù)的
第9－11周
繪制CAD二維工程圖
第12－13周
編寫設(shè)計(jì)說明書
第14周
通過指導(dǎo)老師驗(yàn)收
主
要
參
考
資
料
1、《冷沖壓工藝及模具設(shè)計(jì)》 劉心治主編重慶大學(xué)出版社
2、《沖壓工藝及模具設(shè)計(jì)》萬戰(zhàn)勝主編 鐵道出版社
3、《沖模設(shè)計(jì)》 吉林人民出版社
4、《實(shí)用沖壓技術(shù)》 機(jī)工出版社
5、《冷沖壓及塑料成型工藝與模具設(shè)計(jì)資料》 機(jī)工出版社
6、《模具設(shè)計(jì)與制造簡(jiǎn)明手冊(cè)》 馮炳堯等編 上海出版社
7、《實(shí)用板金沖壓工藝圖集》 梁炳文主編 機(jī)械工業(yè)出版社
8、《沖壓工藝模具設(shè)計(jì)實(shí)用技術(shù)》 鄭家賢編 機(jī)械工業(yè)出版社
…
教研室
意見
簽名：
年 月 日
院(系)主管領(lǐng)導(dǎo)意見
簽名：
年 月 日
湖 南 工 業(yè) 大 學(xué)
本科畢業(yè)設(shè)計(jì)（論文）開題報(bào)告
（2007屆）
學(xué) 院、系：
機(jī)械工程學(xué)院
專 業(yè)：
機(jī)械設(shè)計(jì)制造及其自動(dòng)化
學(xué) 生 姓 名：
宋 璐
班 級(jí)：
機(jī)本0302
學(xué)號(hào) 26030203
指導(dǎo)教師姓名：
曾立平
職稱 教授
2007年3月12日
題目：我國(guó)沖壓模具前景
1.結(jié)合課題任務(wù)情況，查閱文獻(xiàn)資料，撰寫1500～2000字左右的文獻(xiàn)綜述。
本次的畢業(yè)設(shè)計(jì)是帶槽三角形固定板沖圓孔、沖槽、落料連續(xù)模的設(shè)計(jì)，課題的目的是讓我們?cè)谝酝鶎?duì)模具設(shè)計(jì)學(xué)習(xí)的基礎(chǔ)上熟悉沖壓模具的設(shè)計(jì)流程；它既是一次檢閱，也是一次鍛煉，使我們系統(tǒng)地掌握沖壓模具設(shè)計(jì)的技術(shù)，并與Auto CAD，Pro/E等模具設(shè)計(jì)軟件相結(jié)合，提高了我們的機(jī)械模具設(shè)計(jì)能力。
模具是現(xiàn)代工業(yè)的重要工藝設(shè)備，隨著科學(xué)技術(shù)的不斷進(jìn)步，它在國(guó)民經(jīng)濟(jì)中占有越來越重要的地位，發(fā)展前景十分廣闊。模具工業(yè)是技術(shù)密集型、資本密集型和投資密集型的產(chǎn)業(yè)，就冷沖模具而言，在沖模設(shè)計(jì)與制造上，模具結(jié)構(gòu)與精度正朝著兩個(gè)方面發(fā)展：一是為了適應(yīng)高速、自動(dòng)、精密、安全等大批量自動(dòng)化生產(chǎn)的需要，沖模正向高效、精密、長(zhǎng)壽命、多工位、多功能方向發(fā)展；另一方面，為適應(yīng)市場(chǎng)上產(chǎn)品更新?lián)Q代迅速的要求，各種快速成形方法和簡(jiǎn)易經(jīng)濟(jì)沖模的設(shè)計(jì)與制造也得到了迅速的發(fā)展。同時(shí)，計(jì)算機(jī)技術(shù)、信息技術(shù)等先進(jìn)技術(shù)在模具技術(shù)中得到廣泛的應(yīng)用，使模具設(shè)計(jì)與制造水平發(fā)生了深刻的革命性的變化。目前最為突出的是模具CAD/CAE/CAM。在這方面，在這方面，國(guó)際上有許多應(yīng)用成熟的計(jì)算機(jī)軟件，我們不但能消化，應(yīng)用國(guó)外的有關(guān)軟件，少數(shù)單位還能自行開發(fā)或正在開發(fā)模具軟件，盡管其總體水平與國(guó)際上的還有差距，但它代表了我國(guó)模具技術(shù)的發(fā)展成果與發(fā)展方向。
模具是工業(yè)生產(chǎn)的基礎(chǔ)工藝裝備，模具又是“效益放大器”，用模具生產(chǎn)的最終產(chǎn)品的價(jià)值，往往是模具自身價(jià)值的幾十倍、上百倍。沖壓模具是其中重要的一種。模具的標(biāo)準(zhǔn)化和專業(yè)化生產(chǎn)，已得到模具行業(yè)的廣泛重視。這是由于模具標(biāo)準(zhǔn)化是組織模具專業(yè)化生產(chǎn)的前提，而模具的專業(yè)化生產(chǎn)是提高模具質(zhì)量、縮短模具制造周期、降低成本的關(guān)鍵。我國(guó)已經(jīng)頒布了冷沖壓術(shù)語、冷沖模零部件的國(guó)家標(biāo)準(zhǔn)。沖模的模架等基礎(chǔ)零部件已專業(yè)化，商品化。但總的來說，我國(guó)沖模的標(biāo)準(zhǔn)化和專業(yè)化還是比較低的。主要是模具制造商對(duì)模具制造的認(rèn)識(shí)還不夠，對(duì)模具新技術(shù)的應(yīng)用力度不大，對(duì)在模具制造過程中模具標(biāo)準(zhǔn)設(shè)計(jì)還沒有足夠的認(rèn)識(shí)，還停留在老的手工制作又一有經(jīng)驗(yàn)的模具師傅帶隊(duì)的水平線上，試觀國(guó)外發(fā)達(dá)國(guó)家模具制造，把標(biāo)準(zhǔn)化的模具設(shè)計(jì)放在了最重要的位置上，其次是設(shè)備問題。性能良好的沖壓設(shè)備是提高沖壓生產(chǎn)技術(shù)水平的基本條件。高效率、高精度、長(zhǎng)壽命的沖模需要高精度、高自動(dòng)化的沖壓設(shè)備與之相匹配；為了適應(yīng)沖壓新工藝的需要，研制了許多新型結(jié)構(gòu)的沖壓設(shè)備；為了滿足新產(chǎn)品少批量生產(chǎn)的需要，沖壓設(shè)備朝多功能、數(shù)控方向發(fā)展；為提高生產(chǎn)率和安全生產(chǎn)，應(yīng)用各種自動(dòng)化裝置以及沖壓自動(dòng)化生產(chǎn)線。
在帶槽三角形固定板沖圓孔、沖槽、落料連續(xù)模的設(shè)計(jì)中，落料是最重要的模具工序，它是把把剪裁或沖裁成一定形狀的平板毛坯利用某種特定的模具在沖裁力的作用下，使工件脫離毛胚而成零件；沖裁零件的尺寸精度一般可達(dá)IT8～14級(jí)，利用沖裁落料可以沖各種形狀的工件。
就三角形狀零件的落料來說，在沖裁性質(zhì)上與圓形零件的沖裁是相同的，區(qū)別就在于三角形沖裁件周邊的變形是不均勻的。在實(shí)際的沖裁過程中，簡(jiǎn)單沖裁只是在直邊中部占很小的部分，而純粹的沖裁只是集中于圓角分角線的附近很小的區(qū)域。在二者中間的金屬變形情況則是相當(dāng)復(fù)雜的。它包括周邊的壓縮、豎向的伸長(zhǎng)和零件上面壁部的略為變厚。在沖裁落料的時(shí)候，為了使得毛坯的變形過程進(jìn)行順利，得到口部平整的零件、保證零件的質(zhì)量，以及節(jié)省板料，就必需正確地確定毛坯的形狀和尺寸。如果毛坯的尺寸過大，則能使危險(xiǎn)斷面上的沖裁力無謂地增大。這對(duì)提高變形程度和減少工序都不利；即使是毛坯的局部尺寸過大，這在沖裁過程中，過大的部分也會(huì)從變形區(qū)突出出去。不但使突出部分的變形減小，而且也使其臨近部分的板料變形比較困難。毛坯尺寸過大部分的變形程度減小必然使沖裁變形較多地集中到其余的部分上去。于是增加了沿毛坯周邊變形分布的不均勻程度，最后造成零件的壁厚不均勻，而且也容易引起變形過分集中部位的材料局部起皺，降低了沖件的質(zhì)量。由于在零件周邊上各個(gè)點(diǎn)金屬的切向壓縮變形和縱向拉深變形的數(shù)值都不同，其毛坯的形狀和尺寸的計(jì)算對(duì)于不同的尺寸比例時(shí)有很大的不同。在沖裁三角形件時(shí)，沖件的口部同樣也會(huì)出現(xiàn)高低不齊的現(xiàn)象。因此，在計(jì)算三角形零件的毛坯尺寸時(shí)，同樣也必須要加入修邊余量。
自從2001年加入世貿(mào)組織以來，我國(guó)經(jīng)濟(jì)發(fā)展迅速步入快車道階段，其中制造業(yè)的發(fā)展更是迅速。為此，世界著名的制造業(yè)跨國(guó)企業(yè)集團(tuán)紛紛落戶中國(guó)，不斷將中國(guó)發(fā)展成自己的研發(fā)和制造基地，提高自身產(chǎn)品的綜合競(jìng)爭(zhēng)力，以角逐全球市場(chǎng)，致使中國(guó)的傳統(tǒng)制造業(yè)面臨前所未有的生存挑戰(zhàn)和發(fā)展機(jī)遇。中國(guó)的模具行業(yè)產(chǎn)值躋身于世界的第三位，但中國(guó)模具行業(yè)的質(zhì)量并不是世界上最好的，目前還趕不上德國(guó)和日本。但我們相信，中國(guó)不會(huì)因此而停頓，中國(guó)模具的發(fā)展，不僅僅是要量上考慮，更應(yīng)該要從質(zhì)上考慮，中國(guó)模具行業(yè)大有發(fā)展的空間。
3.工作進(jìn)度及具體安排。
3月8日～3月15日． 設(shè)計(jì)(論文)開題階段。
提出總體設(shè)計(jì)方案及草圖，填寫開題報(bào)告。
3月16日～5月16日． 設(shè)計(jì)(論文)初稿階段。
完成總體設(shè)計(jì)圖、部件圖、零件圖。
5月16日～5月26日． 中期檢查階段
中期檢查，編寫畢業(yè)設(shè)計(jì)說明書。
5月26日～6月2日． 畢業(yè)設(shè)計(jì)定稿階段。
圖紙修改、設(shè)計(jì)說明書修改、定稿，材料復(fù)查。
6月2日～6月6日．畢業(yè)答辯。
6月7日～6月19日．材料整理裝袋。
4.指導(dǎo)教師意見。
指導(dǎo)教師：
年 月 日
說明：開題報(bào)告作為畢業(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，此報(bào)告應(yīng)在導(dǎo)師指導(dǎo)下，由學(xué)生填寫，將作為畢業(yè)設(shè)計(jì)（論文）成績(jī)考查的重要依據(jù)，經(jīng)導(dǎo)師審查后簽署意見生效。 本科畢業(yè)設(shè)計(jì)（論文）進(jìn)展情況記錄
畢業(yè)設(shè)計(jì)（論文）題目： 帶槽三角形固定板沖圓孔、沖槽、落料連續(xù)模設(shè)計(jì)
班級(jí)： 機(jī)本0302 學(xué)號(hào)： 26030203 學(xué)生： 宋璐 指導(dǎo)教師： 曾立平
時(shí) 間
任務(wù)完成情況
指導(dǎo)教師意見
第 3 周
至
第 4 周
搜集設(shè)計(jì)相關(guān)資料，整體
規(guī)劃設(shè)計(jì)全過程，方案論證
指導(dǎo)教師簽名：
年 月 日
第 5 周
至
第 6 周
模具總體設(shè)計(jì)：模具形式、
尺寸參數(shù)和質(zhì)量參數(shù)的確定
指導(dǎo)教師簽名：
年 月 日
第 7 周
至
第 8 周
凸凹模設(shè)計(jì)：結(jié)構(gòu)方案
分析，主要參數(shù)確定
指導(dǎo)教師簽名：
年 月 日
注：教師監(jiān)督學(xué)生如實(shí)記錄畢業(yè)設(shè)計(jì)（論文）過程中根據(jù)《課題任務(wù)書》擬定的進(jìn)度與進(jìn)展情況以及畢業(yè)設(shè)計(jì)（論文）撰寫過程中遇到的問題和困難，并簽署意見。
第 9 周
至
第 11 周
繪制CAD二維工程圖
指導(dǎo)教師簽名：
年 月 日
第 12 周
至
第 13 周
編寫設(shè)計(jì)說明書
指導(dǎo)教師簽名：
年 月 日
第 13 周
至
第 14 周
圖紙修改、設(shè)計(jì)說明書
修改、定稿，材料復(fù)查。
指導(dǎo)教師簽名：
年 月 日
注：教師監(jiān)督學(xué)生如實(shí)記錄畢業(yè)設(shè)計(jì)（論文）過程中根據(jù)《課題任務(wù)書》擬定的進(jìn)度與進(jìn)展情況以及畢業(yè)設(shè)計(jì)（論文）撰寫過程中遇到的問題和困難，并簽署意見。
本科畢業(yè)設(shè)計(jì)（論文）中期報(bào)告
填表日期：2007年5月 16日
院（系）
機(jī)械工程學(xué)院
班級(jí)
機(jī)本0302
學(xué)生姓名
宋璐
課題名稱：帶槽三角形固定板沖圓孔、沖槽、落料連續(xù)模設(shè)計(jì)
課題主要任務(wù)：
保證設(shè)計(jì)的模具有較高的的生產(chǎn)率和高質(zhì)量的沖壓件的同時(shí)，力求成本低、模具壽命長(zhǎng)。設(shè)計(jì)的冷沖模必須保證操作安全、方便。沖模零件必須具有良好的工藝性，即制造裝配容易、便于管理。
1、 簡(jiǎn)述開題以來所做的具體工作和取得的進(jìn)展或成果
開題以來做了大量相關(guān)的工作，首先對(duì)模具發(fā)展情況和市場(chǎng)進(jìn)行了認(rèn)真的分析思考，結(jié)合生產(chǎn)實(shí)際，市場(chǎng)對(duì)模具具有相當(dāng)?shù)男枨?，設(shè)計(jì)級(jí)進(jìn)模具有廣闊的市場(chǎng)前景。然后參觀見習(xí)了多家模具制造工廠，對(duì)模具制造的工藝流程有了一定的了解!然后我查閱了大量的相關(guān)的資料及模具設(shè)計(jì)手冊(cè)，開始對(duì)模具的總體進(jìn)行設(shè)計(jì)，形式的選擇，主要尺寸參數(shù)和質(zhì)量參數(shù)的確定。完成設(shè)計(jì)(論文)初稿。完成總體裝配圖、部件圖、零件圖。
2、 下一步的主要研究任務(wù)，具體設(shè)想與安排
對(duì)前期工作進(jìn)行認(rèn)真細(xì)致的總結(jié)，積極與贈(zèng)教授展開研討，再次對(duì)總體方案進(jìn)行論證和驗(yàn)算，使其得到完善，優(yōu)化！認(rèn)真規(guī)范的編寫設(shè)計(jì)說明書，對(duì)初圖進(jìn)行修改，規(guī)范標(biāo)準(zhǔn)！總之，力爭(zhēng)達(dá)到如下的設(shè)計(jì)效果：工作可靠，結(jié)構(gòu)簡(jiǎn)單，裝卸方便，便于維修、調(diào)整；盡量使用通用件，以便降低制造成本；在保證功能和強(qiáng)度的要求下，盡量減少整備質(zhì)量。
3、 存在的具體問題
主要問題是設(shè)計(jì)主要源自于理論，有關(guān)凸凹模和模架的結(jié)構(gòu)了解不是很清楚，所以對(duì)設(shè)計(jì)帶來了不少的麻煩！另外課題的難點(diǎn)是工件步矩較大以及標(biāo)準(zhǔn)件的選擇。除了凸模沖壓力過大需要進(jìn)行強(qiáng)度驗(yàn)算，其他部件均滿足要求。設(shè)計(jì)中始用擋料銷、活動(dòng)擋料銷的設(shè)置導(dǎo)正銷的選擇都是
保證模具能正常生產(chǎn)的必要條件。
4、指導(dǎo)教師對(duì)該生前期研究工作的評(píng)價(jià)
指導(dǎo)教師簽名：
日 期：
畢業(yè)設(shè)計(jì)（論文）指導(dǎo)教師評(píng)閱表
院（系）：機(jī)械工程學(xué)院
學(xué)生姓名
宋璐
學(xué) 號(hào)
26030203
班 級(jí)
機(jī)本0302
專 業(yè)
機(jī)械設(shè)計(jì)制造及其自動(dòng)化
指導(dǎo)教師
姓 名
曾立平
課題名稱
帶槽三角形固定板沖圓孔、沖槽、落料連續(xù)模設(shè)計(jì)
評(píng)語：（包括以下方面，①學(xué)習(xí)態(tài)度、工作量完成情況；②檢索和利用文獻(xiàn)能力、計(jì)算機(jī)應(yīng)用能力；③學(xué)術(shù)水平或設(shè)計(jì)水平、綜合運(yùn)用知識(shí)能力和創(chuàng)新能力；）
是否同意參加答辯：
是□ 否□
指導(dǎo)教師評(píng)定成績(jī)
分值：
指導(dǎo)教師簽字： 年 月 日
畢業(yè)設(shè)計(jì)（論文）評(píng)閱教師評(píng)閱表
院、系：機(jī)械工程學(xué)院
學(xué)生姓名
宋璐
學(xué) 號(hào)
26030203
班 級(jí)
機(jī)本0302
專 業(yè)
機(jī)械設(shè)計(jì)制造及其自動(dòng)化
課題名稱
帶槽三角形固定板沖圓孔、沖槽、落料連續(xù)模設(shè)計(jì)
評(píng)語：（對(duì)論文學(xué)術(shù)評(píng)語，包括選題意義；文獻(xiàn)利用能力；所用資料可靠性；創(chuàng)新成果及寫作規(guī)范化和邏輯性）
針對(duì)課題內(nèi)容給設(shè)計(jì)者（作者）提出3個(gè)問題，作為答辯時(shí)參考。
1.
2.
3.
評(píng) 分：
是否同意參加答辯
是□ 否□
評(píng)閱人簽名： 年 月 日
畢業(yè)設(shè)計(jì)（論文）答辯及最終成績(jī)?cè)u(píng)定表
院、系（公章）：
學(xué)生姓名
宋璐
學(xué)號(hào)
26030203
班級(jí)
機(jī)本0302
答辯
日期
課題名稱
帶槽三角形固定板沖圓孔、沖槽、落料連續(xù)模設(shè)計(jì)
指導(dǎo)
教師
曾立平
成 績(jī) 評(píng) 定
分值
評(píng) 定
教師
1
教師
2
教師
3
教師
4
教師
5
小計(jì)
課題介紹
思路清晰，語言表達(dá)準(zhǔn)確，概念清楚，論點(diǎn)正確，實(shí)驗(yàn)方法科學(xué)，分析歸納合理，結(jié)論嚴(yán)謹(jǐn)，設(shè)計(jì)（論文）有應(yīng)用價(jià)值。
30
答辯
表現(xiàn)
思維敏捷,回答問題有理論根據(jù)，基本概念清楚，主要問題回答準(zhǔn)確大、深入,知識(shí)面寬。
70
合 計(jì)
100
答 辯 評(píng) 分
分值：
答辯小組長(zhǎng)簽名：
答辯成績(jī)a：
× ％＝
指導(dǎo)教師評(píng)分
分值：
指導(dǎo)教師評(píng)定成績(jī)b：
× ％＝
評(píng)閱教師評(píng)分
分值：
評(píng)閱教師評(píng)定成績(jī)c：
× ％＝
最終評(píng)定成績(jī)：
分?jǐn)?shù)： 等級(jí)：
答辯委員會(huì)主任簽名：
年 月 日
說明：最終評(píng)定成績(jī)＝a+b+c，三個(gè)成績(jī)的百分比由各院、系自己確定。
2007屆
本科生畢業(yè)設(shè)計(jì)（論文）資料
第二部分 設(shè)計(jì)說明書
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