購(gòu)買設(shè)計(jì)請(qǐng)充值后下載，，資源目錄下的文件所見即所得，都可以點(diǎn)開預(yù)覽，，資料完整，充值下載就能得到。。?！咀ⅰ浚篸wg后綴為CAD圖，doc,docx為WORD文檔，【有不明白之處，可咨詢QQ:1304139763】
外文翻譯 系 別 機(jī)械工程系 專 業(yè) 機(jī)械設(shè)計(jì)制造及其自動(dòng)化 班 級(jí) B942131 學(xué) 號(hào) 23 姓 名 任文成 指導(dǎo)教師 王巍 負(fù)責(zé)教師 王巍 沈陽(yáng)航空航天大學(xué)北方科技學(xué)院 2013 年 6 月 沈陽(yáng)航空航天大學(xué)北方科技學(xué)院畢業(yè)設(shè)計(jì) 外文翻譯 0 譯文一 模具的發(fā)展趨勢(shì) 1 模具 CAD CAE CAM 正向集成化 三維化 智能化和網(wǎng)絡(luò) 化方向發(fā)展 1 模具軟件功能集成化 模具軟件功能的集成化要求軟件的功能模塊比較齊全 同時(shí)各功能模塊采 用同一數(shù)據(jù)模型 以實(shí)現(xiàn)信息的綜合管理與共享 從而支持模具設(shè)計(jì) 制造 裝配 檢驗(yàn) 測(cè)試及生產(chǎn)管理的全過(guò)程 達(dá)到實(shí)現(xiàn)最佳效益的目的 如英國(guó) Delcam 公司的系列化軟件就包括了曲面 實(shí)體幾何造型 復(fù)雜形體工程制圖 工業(yè)設(shè)計(jì)高級(jí)渲染 塑料模設(shè)計(jì)專家系統(tǒng) 復(fù)雜形體 CAM 藝術(shù)造型及雕刻自 動(dòng)編程系統(tǒng) 逆向工程系統(tǒng)及復(fù)雜形體在線測(cè)量系統(tǒng)等 集成化程度較高的軟 件還包括 Pro ENGINEER UG 和 CATIA 等 國(guó)內(nèi)有上海交通大學(xué)金屬塑性 成型有限元分析系統(tǒng)和沖裁模 CAD CAM 系統(tǒng) 北京北航海爾軟件有限公司的 CAXA 系列軟件 吉林金網(wǎng)格模具工程研究中心的沖壓模 CAD CAE CAM 系統(tǒng) 等 2 模具設(shè)計(jì) 分析及制造的三維化 傳統(tǒng)的二維模具結(jié)構(gòu)設(shè)計(jì)已越來(lái)越不適應(yīng)現(xiàn)代化生產(chǎn)和集成化技術(shù)要求 模具設(shè)計(jì) 分析 制造的三維化 無(wú)紙化要求新一代模具軟件以立體的 直觀 的感覺來(lái)設(shè)計(jì)模具 所采用的三維數(shù)字化模型能方便地用于產(chǎn)品結(jié)構(gòu)的 CAE 分 析 模具可制造性評(píng)價(jià)和數(shù)控加工 成形過(guò)程模擬及信息的管理與共享 如 Pro ENGINEER UG 和 CATIA 等軟件具備參數(shù)化 基于特征 全相關(guān)等特點(diǎn) 從而使模具并行工程成為可能 另外 Cimatran 公司的 Moldexpert Delcam 公 司的 Ps mold 及日立造船的 Space E mold 均是 3D 專業(yè)注塑模設(shè)計(jì)軟件 可進(jìn) 行交互式 3D 型腔 型芯設(shè)計(jì) 模架配置及典型結(jié)構(gòu)設(shè)計(jì) 澳大利亞 Moldflow 公司的三維真實(shí)感流動(dòng)模擬軟件 MoldflowAdvisers 已經(jīng)受到用戶廣泛的好評(píng)和 應(yīng)用 國(guó)內(nèi)有華中理工大學(xué)研制的同類軟件 HSC3D4 5F 及鄭州工業(yè)大學(xué)的 Z 沈陽(yáng)航空航天大學(xué)北方科技學(xué)院畢業(yè)設(shè)計(jì) 外文翻譯 1 mold 軟件 面向制造 基于知識(shí)的智能化功能是衡量模具軟件先進(jìn)性和實(shí)用性 的重要標(biāo)志之一 如 Cimatron 公司的注塑模專家軟件能根據(jù)脫模方向自動(dòng)產(chǎn)生 分型線和分型面 生成與制品相對(duì)應(yīng)的型芯和型腔 實(shí)現(xiàn)模架零件的全相關(guān) 自動(dòng)產(chǎn)生材料明細(xì)表和供 NC 加工的鉆孔表格 并能進(jìn)行智能化加工參數(shù)設(shè)定 加工結(jié)果校驗(yàn)等 3 模具軟件應(yīng)用的網(wǎng)絡(luò)化趨勢(shì) 隨著模具在企業(yè)競(jìng)爭(zhēng) 合作 生產(chǎn)和管理等方面的全球化 國(guó)際化 以及 計(jì)算機(jī)軟硬件技術(shù)的迅速發(fā)展 網(wǎng)絡(luò)使得在模具行業(yè)應(yīng)用虛擬設(shè)計(jì) 敏捷制造 技術(shù)既有必要 也有可能 美國(guó)在其 21 世紀(jì)制造企業(yè)戰(zhàn)略 中指出 到 2006 年要實(shí)現(xiàn)汽車工業(yè)敏捷生產(chǎn) 虛擬工程方案 使汽車開發(fā)周期從 40 個(gè)月縮短到 4 個(gè)月 2 模具檢測(cè) 加工設(shè)備向精密 高效和多功能方向發(fā)展 1 模具檢測(cè)設(shè)備的日益精密 高效 精密 復(fù)雜 大型模具的發(fā)展 對(duì)檢測(cè)設(shè)備的要求越來(lái)越高 現(xiàn)在精密模 具的精度已達(dá) 2 3 m 目前國(guó)內(nèi)廠家使用較多的有意大利 美國(guó) 日本等國(guó)的 高精度三坐標(biāo)測(cè)量機(jī) 并具有數(shù)字化掃描功能 如東風(fēng)汽車模具廠不僅擁有意 大利產(chǎn) 3250mm 3250mm 三坐標(biāo)測(cè)量機(jī) 還擁有數(shù)碼攝影光學(xué)掃描儀 率先在 國(guó)內(nèi)采用數(shù)碼攝影 光學(xué)掃描作為空間三維信息的獲得手段 從而實(shí)現(xiàn)了從測(cè) 量實(shí)物 建立數(shù)學(xué)模型 輸出工程圖紙 模具制造全過(guò)程 成功實(shí)現(xiàn)了逆向工 程技術(shù)的開發(fā)和應(yīng)用 這方面的設(shè)備還包括 英國(guó)雷尼紹公司第二代高速掃描 儀 CYCLON SERIES2 可實(shí)現(xiàn)激光測(cè)頭和接觸式測(cè)頭優(yōu)勢(shì)互補(bǔ) 激光掃描精度 為 0 05mm 接觸式測(cè)頭掃描精度達(dá) 0 02mm 另外德國(guó) GOM 公司的 ATOS 便 攜式掃描儀 日本羅蘭公司的 PIX 30 PIX 4 臺(tái)式掃描儀和英國(guó)泰勒 霍普森公 司 TALYSCAN150 多傳感三維掃描儀分別具有高速化 廉價(jià)化和功能復(fù)合化等 特點(diǎn) 2 數(shù)控電火花加工機(jī)床 沈陽(yáng)航空航天大學(xué)北方科技學(xué)院畢業(yè)設(shè)計(jì) 外文翻譯 2 日本沙迪克公司采用直線電機(jī)伺服驅(qū)動(dòng)的 AQ325L AQ550LLS WEDM 具 有驅(qū)動(dòng)反應(yīng)快 傳動(dòng)及定位精度高 熱變形小等優(yōu)點(diǎn) 瑞士夏米爾公司的 NCEDM 具有 P E3 自適應(yīng)控制 PCE 能量控制及自動(dòng)編程專家系統(tǒng) 另外有些 EDM 還采用了混粉加工工藝 微精加工脈沖電源及模糊控制 FC 等技術(shù) 3 高速銑削機(jī)床 HSM 銑削加工是型腔模具加工的重要手段 而高速銑削具有工件溫升低 切削 力小 加工平穩(wěn) 加工質(zhì)量好 加工效率高 為普通銑削加工的 5 10 倍 及可 加工硬材料 60HRC 等諸多優(yōu)點(diǎn) 因而在模具加工中日益受到重視 瑞士克朗 公司 UCP710 型五軸聯(lián)動(dòng)加工中心 其機(jī)床定位精度可達(dá) 8 m 自制的具有矢 量閉環(huán)控制電主軸 最大轉(zhuǎn)速為 42000r min 意大利 RAMBAUDI 公司的高速 銑床 其加工范圍達(dá) 2500mm 5000mm 1800mm 轉(zhuǎn)速達(dá) 20500r min 切削進(jìn) 給速度達(dá) 20m min HSM 一般主要用于大 中型模具加工 如汽車覆蓋件模具 壓鑄模 大型塑料等曲面加工 其曲面加工精度可達(dá) 0 01mm 沈陽(yáng)航空航天大學(xué)北方科技學(xué)院畢業(yè)設(shè)計(jì) 外文翻譯 3 外文原文 Die trend 1 mold CAD CAE CAM being integrated three dimensional intelligent and network direction 1 mold software features integrated Die software features of integrated software modules required relatively complete while the function module using the same data model in order to achieve Syndicated news management and sharing of information to support the mold design manufacture assembly inspection testing and production management of the entire process to achieve optimal benefits Series such as the UK Delcam s software will include a surface solid geometric modeling engineering drawing complex geometry advanced rendering industrial design plastic mold design expert system complex physical CAM artistic design and sculpture automatic programming system reverse engineering and complex systems physical line measurement systems A higher degree of integration of the software includes Pro ENGINEER UG and CATIA etc Shanghai Jiaotong University China with finite element analysis of metal plastic forming systems and Die CAD CAM systems Beijing Beihang Haier Software Ltd CAXA Series software Jilin Gold Grid Engineering Research Center of the stamping die mold CAD CAE CAM systems 2 mold design analysis and manufacture of three dimensional Two dimensional mold of traditional structural design can no longer meet modern technical requirements of production and integration Mold design analysis manufacturing three dimensional technology paperless software required to mold a new generation of three dimensional intuitive sense to design the mold using three 沈陽(yáng)航空航天大學(xué)北方科技學(xué)院畢業(yè)設(shè)計(jì) 外文翻譯 4 dimensional digital model can be easily used in the product structure of CAE analysis tooling manufacturability evaluation and CNC machining forming process simulation and information management and sharing Such as Pro ENGINEER UG and CATIA software such as with parametric feature based all relevant characteristics so that mold concurrent engineering possible In addition Cimatran company Moldexpert Delcam s Ps mold and Hitachi Shipbuilding of Space E mold are professional injection mold 3D design software interactive 3D cavity core design mold base design configuration and typical structure Australian company Moldflow realistic three dimensional flow simulation software MoldflowAdvisers been widely praised by users and applications China Huazhong University of Science have developed similar software HSC3D4 5F and Zhengzhou University Z mold software For manufacturing knowledge based intelligent software function is a measure of die important sign of advanced and practical one Such as injection molding experts Cimatron s software can automatically generate parting direction based parting line and parting surface generate products corresponding to the core and cavity implementation of all relevant parts mold and for automatically generated BOM Form NC drilling process and can intelligently process parameter setting calibration and other processing results 3 mold software applications networking trend With the mold in the enterprise competition cooperation production and management globalization internationalization and the rapid development of computer hardware and software technology the Internet has made in the mold industry virtual design agile manufacturing technology both necessary and possible The United States in its 21st Century Manufacturing Enterprise Strategy that the auto industry by 2006 to achieve agile manufacturing virtual engineering solutions to automotive development cycle shortened from 40 months to 4 months 2 mold testing processing equipment to the precise efficient and multi direction 沈陽(yáng)航空航天大學(xué)北方科技學(xué)院畢業(yè)設(shè)計(jì) 外文翻譯 5 1 mold testing equipment more sophisticated efficient Sophisticated complex large scale mold development testing equipment have become increasingly demanding Precision Mould precision now reached 2 3 m more domestic manufacturers have to use Italy the United States Japan and other countries in the high precision coordinate measuring machine and with digital scanning Such as Dongfeng Motor Mould Factory not only has the capacity 3250mm 3250mm Italian coordinate measuring machine also has a digital photography optical scanner the first in the domestic use of digital photography optical scanning as a means of spatial three dimensional access to information enabling the establishment from the measurement of physical model output of engineering drawings the whole process of mold making reverse engineering a successful technology development and applications This equipment include second generation British Renishaw high speed scanners CYCLON SERIES2 can be realized and contact laser probe complementary probe laser scanner accuracy of 0 05mm scanning probe contact accuracy of 0 02 mm Another German company GOM ATOS portable scanners Japan Roland s PIX 30 PIX 4 desktop scanner and the United Kingdom Taylor Hopson s TALYSCAN150 multi sensor respectively Three dimensional scanner with high speed low cost and functional composite and so on 2 CNC EDM Japan Sodick linear motor servo drive using the company s AQ325L AQ550LLS WEDM have driven fast response transmission and high positioning accuracy the advantages of small thermal deformation Switzerland Chanmier company NCEDM with P E3 adaptive control PCE energy control and automatic programming expert systems Others also used the powder mixed EDM machining technology micro finishing pulse power and fuzzy control FC technologies 3 high speed milling machine HSM Milling is an important means of cavity mold The low temperature high speed milling with the workpiece cutting force is small smooth processing processing 沈陽(yáng)航空航天大學(xué)北方科技學(xué)院畢業(yè)設(shè)計(jì) 外文翻譯 6 quality processing efficiency for the general milling process 5 to 10 times and can process hard materials 60HRC and many other advantages Thus in the mold processing more and more attention Ruishikelang company UCP710 type five axis machining center machine tool positioning accuracy up to 8 m home made closed loop vector control spindle with a maximum speed 42000r min Italy RAMBAUDI s high speed milling the processing range of up to 2500mm 5000mm 1800mm speed up 20500r min cutting feed speed of 20m min HSM generally used large medium sized mold such as motor cover mold die casting mold large plastic surface machining the surface precision up to 0 01mm 沈陽(yáng)航空航天大學(xué)北方科技學(xué)院畢業(yè)設(shè)計(jì) 外文翻譯 7 譯文二 快速經(jīng)濟(jì)制模技術(shù)類型 快速經(jīng)濟(jì)制模技術(shù)與傳統(tǒng)的機(jī)械加工相比 具有制模周期短 成本低 精 度與壽命又能滿足生產(chǎn)上的使用要求 是綜合經(jīng)濟(jì)效益比較顯著的一類制造模 具的技術(shù) 概括起來(lái) 有以下幾種類別 1 表面成型制模技術(shù) 表面成型制模技術(shù) 主要是利用噴涂 電鑄 化學(xué)腐蝕等新的工藝方法 形成型腔表面及精細(xì)花紋的一種工藝技術(shù) 2 澆鑄成型制模技術(shù) 澆鑄成型制模技術(shù)的共同特點(diǎn)是依樣件為基準(zhǔn) 澆鑄出凸 凹模 型腔表 面不需要機(jī)械加工 3 擠壓成型技術(shù) 1 冷擠壓成型 利用鈹銅合金的良好的導(dǎo)熱性和穩(wěn)定性 經(jīng)固熔時(shí)效處理后 采用冷擠 壓制造模具凹模型腔 其特點(diǎn)是制造周期短 型腔精度高 IT7 級(jí) 表面粗糙 度 Ra 0 025 m 強(qiáng)度高 壽命可達(dá) 50 萬(wàn)次 無(wú)環(huán)境污染 2 超塑成型制模技術(shù) 該技術(shù)是利用金屬材料在細(xì)化晶粒 一定成型溫度 低變形速率條件下 材料具有最佳超塑性時(shí) 將事先制作好的凸模 用較小的力便可擠壓出凹模的 一種快速經(jīng)濟(jì)制模技術(shù) 超塑成型材料的典型代表是 Zn 22 AL 4 無(wú)模多點(diǎn)成形技術(shù) 無(wú)模多點(diǎn)快速成形技術(shù)是以 CAD CAM CAT 技術(shù)為主要手段 利用計(jì)算機(jī) 控制高度可調(diào)基本體群形成上下成形面 代替?zhèn)鹘y(tǒng)模具對(duì)板料進(jìn)行三維曲面成 形的又一現(xiàn)代先進(jìn)制造技術(shù) 此項(xiàng)技術(shù)可以隨意改變變形路徑與受力狀態(tài) 提 高材料的成形極限 可反復(fù)成形 以此消除材料內(nèi)部的殘余應(yīng)力 實(shí)現(xiàn)無(wú)回彈 成形 5 凱維朗 KEVRON 鋼帶沖裁落料制模技術(shù) 沈陽(yáng)航空航天大學(xué)北方科技學(xué)院畢業(yè)設(shè)計(jì) 外文翻譯 8 新型鋼帶沖裁落料制模技術(shù)是一種不同于一般具有凸 凹模結(jié)構(gòu)的鋼帶 模 它是由單刃鋼帶與特制墊板組成的新型快速經(jīng)濟(jì)制模技術(shù) 這種模具重量 輕 一般只有 200kg 加工精度為 0 35 0 50mm 可適合各種黑色和有色金 屬的 0 5 0 65mm 厚的板料加工 壽命可達(dá)到 5 25 萬(wàn)次 制造成本低 6 模具毛坯的快速制造技術(shù) 實(shí)型鑄造 由于大量的模具是屬于單件或小批量生產(chǎn) 模具毛坯的制造質(zhì)量和周期 及成本對(duì)最終的模具質(zhì)量和周期及成本的影響是至關(guān)重要的 現(xiàn)代模具毛坯已廣泛地采用子實(shí)型鑄造技術(shù) 所謂實(shí)型鑄造就是利用泡 沫塑料 聚苯乙烯 PS 或聚甲基丙烯酸酯 PMMA 制作代替?zhèn)鹘y(tǒng)的木模或金屬模 造型后不需取出模型 便可以澆鑄 泡沫塑料模型的高溫液體金屬作用下 迅 速燃燒氣化而消失 金屬液取代原來(lái)泡沫塑料模型所占有的位置 冷凝后形成 鑄件 實(shí)型鑄造在實(shí)際應(yīng)用中有下列幾種情況 1 干砂實(shí)型鑄造 即用 55 100 目的全干沒有任何粘結(jié)劑的石英砂造型 用 EPS 或 PMMA 泡 沫塑料制作的模型涂掛 0 2 1mm 厚透氣性良好的耐火涂料層 以提高鑄件表面 光潔度 防止粘砂或塌箱 2 負(fù)壓實(shí)型鑄造 負(fù)壓實(shí)型鑄造又稱 V 法造型 該技術(shù)是使用全干而無(wú)粘結(jié)劑的石英砂做 型砂 用 EPS 或 PMMA 泡沫塑料做模型 在塑料薄膜的密封條件下 讓整個(gè)鑄型 在負(fù)壓條件下 真空度 0 4 0 67MPa 進(jìn)行液體金屬澆鑄 鑄件凝固后解除負(fù)壓 即可得到表面光潔的鑄件 3 樹脂砂實(shí)型鑄造 利用樹脂砂做型砂 用 EPS 或 PMMA 泡沫塑料做模型 在常溫 常壓下進(jìn) 行液體金屬澆鑄而制取鑄件 利用實(shí)型鑄造的技術(shù)制造模具毛坯具有尺寸精度 高 ISO9 級(jí) 加工余量小 一般在 5mm 左右 不需要拔模斜度 不需要制型芯 與泥芯撐 節(jié)省金屬材料 節(jié)省做木模型的木材 制造周期短 成本低 該技 術(shù)適合大型 復(fù)雜 單件模具毛坯的生產(chǎn) 陶瓷型精鑄 失蠟精鑄等技術(shù)在提 高模具毛坯精度 降低加工工時(shí) 縮短制造周期 降低成本等方面也顯示出其 沈陽(yáng)航空航天大學(xué)北方科技學(xué)院畢業(yè)設(shè)計(jì) 外文翻譯 9 特有的優(yōu)越性 7 其它方面技術(shù) 為了簡(jiǎn)化模具的結(jié)構(gòu)設(shè)計(jì) 降低模具成本 縮短模具制造周期 在國(guó)內(nèi)外 也先后出現(xiàn)了一些其它方面新技術(shù)的應(yīng)用 如快換模架 沖壓?jiǎn)卧?刃口堆焊 鑲塊鑄造 氮?dú)鈴椈傻?沈陽(yáng)航空航天大學(xué)北方科技學(xué)院畢業(yè)設(shè)計(jì) 外文翻譯 10 外文原文 Fast economical pattern makings technologies type The fast economical pattern making technology and the traditional machine finishing compares has the pattern making cycle short the cost is low the precision and the life can satisfy in the production the operation requirements is synthesizes an economic efficiency quite remarkable kind to make the mold the technology summarizes below has several types to leave 1 surfaces take shape the pattern making technology The surface takes shape the pattern making technology mainly is the use spurts spreads the electrolytic casting chemistry corrosion and so on the new technique formation cavity surface and the fine pattern one kind of craft technology 2 sprinkle to cast into the type system mold technique Sprinkling to cast into technical and common characteristics of the type system mold is according to the kind piece for basis sprinkle a convex and cave mold a surface do not need the machine to process 3 extrusions takes shape the technology 1 cold extrusions takes shape Using the berylliuim copper alloy good thermal conductivity and the stability after the solid melt aging treatment of metal use the swaging pressure to make the mold concave model cavity Its characteristic is makes the cycle short the cavity precision is high the IT7 level surface roughness Ra 0 025 mu m The intensity is high the life may reach 500 000 times does not have the environmental pollution 2 ultra models takes shape the pattern making technology This technology is using the metal material in the thin crystal grain certainly takes shape the temperature under the low distortion speed condition when the material has the best superplasticity toes attend to carry out raised mold which the initiative finishes then may extrude the concave mold with the small strength one kind of fast economical pattern making technology Ultra models takes shape material typical representative is Zn 22 AL 4 does not have the mold multi spots forming technology Does not have the mold multi spots fast forming technology is by CAD CAM CAT The technology is the main method about may adjust the base main body group highly using the computer control to form forms the surface replaces the traditional mold to carry on the three dimensional curved surface forming to the sheet an modern advanced manufacture technology This technology may change the distortion way and the stressful condition at will enhances the material the formed limit may form repeatedly by this elimination material interior remaining stress the realization does not have the snapping back forming 沈陽(yáng)航空航天大學(xué)北方科技學(xué)院畢業(yè)設(shè)計(jì) 外文翻譯 11 5 triumphant Uygur bright steel belt blanking falls the material pattern making technology The new steel belt blanking falls the material pattern making technology is one kind is different with has raised the concave mold structure steel belt mold generally it is with specially makes the new fast economical pattern making technology by the single edge steel belt which the backing strip is composed This kind of mold weight is light only then 200kg the processing precision for 0 35 0 50mm may suit each kind of black and the non ferrous metal 0 5 0 65mm thick sheet processing generally The life may achieve 5 25 ten thousand the production cost is low 6 molds semifinished materials fast manufacture technology solid casting Because the massive molds are belong to the single unit or the production the mold semifinished materials manufacture quality and the cycle and the cost to the final mold quality and cyclical and the cost influence are very important The modern mold semifinished materials widely have used the seeds casting technology the so called solid casting is polystyrene PS either polymethacrylate PMMA manufactures using the foam plastics replaces traditional the wooden mold or the metal pattern after the modelling does not have to take out the model then may the casting under the foam plastics model high temperature liquid metal function deflagrate the gasification but to vanish the molten metal substitution original foam plastics model holds the position after the condensation forms the casting The solid casting has the following several kind of situations in the practical application 1 dry sands solid casting Namely all does not do any cementing agent quartz sand modelling with 55 100 goal spreads with EPS or the PMMA foam plastics manufacture model hangs the 0 2 1mm thick permeability good fireproof coating level by enhances the casting superficially attractive fineness prevented the fat sand or collapses the box 2 negative compactions casting The negative compaction casting calls V law modelling This technology is the use all does but does not have the cementing agent the quartz sand to make the molding sand makes the model with EPS or the PMMA foam plastics in under the plastic film seal condition entire lets cast vacuum degree 0 4 0 67MPa carries on the liquid metal casting under the negative pressure condition after the casting coagulates relieves the negative pressure then to obtain the superficial bright and clean casting 3 resins granulated substance solid casting Makes the molding sand using the resin granulated substance makes the model with EPS or the PMMA foam plastics under the normal temperature the atmospheric pressure carries on the liquid metal casting but to make takes the casting uses the solid casting the technical manufacture mold semifinished materials to have the size precision high the ISO9 level processing remainder small generally about 5mm does not need to pull out the mold ascent does not need the making core and the sand 沈陽(yáng)航空航天大學(xué)北方科技學(xué)院畢業(yè)設(shè)計(jì) 外文翻譯 12 core brace saves the metal material economical makes the wooden model the lumber the manufacture cycle short the cost is low This technology suits large scale is complex the single unit mold semifinished materials production the ceramics fine cast lose the cerotin to cast and so on the technology are increasing the mold semifinished materials precision reduce the processing man hour reduce the manufacture cycle reduce aspect and so on cost also demonstrate its unique superiority 7 other aspects technologies In order to simplify the mold the structural design reduces the mold cost reduces the mold manufacture cycle in domestic and foreign also successively appeared some other aspects new technology application like trades the mold frame the ramming unit the cutting edge built up welding quickly inlays the block casting the nitrogen spring and so on