桶型件注塑模具設(shè)計(jì)

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一是進(jìn)口模具大部分是技術(shù)含量高的大型精密模具，而出口模具大部分是技術(shù)含量較低的中低檔模具，因此技術(shù)含量高的中高檔模具市場(chǎng)滿足率低于沖壓模具總體滿足率，這些模具的發(fā)展已滯后于沖壓件生產(chǎn)，而技術(shù)含量低的中低檔模具市場(chǎng)滿足率要高于沖壓模具市場(chǎng)總體滿足率； 二是由于我國的模具價(jià)格要比國際市場(chǎng)價(jià)格低許多，具有一定的競(jìng)爭(zhēng)力，因此其在國際市場(chǎng)的前景看好； 三是近年來港資、臺(tái)資、外資企業(yè)在我國發(fā)展迅速，這些企業(yè)中大量的自產(chǎn)自用的沖壓模具無確切的統(tǒng)計(jì)資料，因此未能計(jì)入上述數(shù)字之中。 二現(xiàn)代模具制造技術(shù)的發(fā)展方向 現(xiàn)代模具技術(shù)的發(fā)展應(yīng)該為適應(yīng)模具產(chǎn)品“交貨期短”、“精度高”、“質(zhì)量好”、“價(jià)格低”的要求服務(wù)。達(dá)到這一要求急需發(fā)展如下幾項(xiàng) (1)全面推廣普及DBD/DBM/DBE技術(shù) 模具DBD/DBM/DBE技術(shù)是模具設(shè)計(jì)制造的發(fā)展方向。隨著微機(jī)軟件的發(fā)展和進(jìn)步，普及DBD/DBM/DBE技術(shù)的條件已基本成熟，各企業(yè)將加大DBD/DBM技術(shù)培訓(xùn)和技術(shù)服務(wù)的力度；進(jìn)一步擴(kuò)大DBE技術(shù)的應(yīng)用范圍。計(jì)算機(jī)和網(wǎng)絡(luò)的發(fā)展正使DBD/DBM/DBE技術(shù)跨地區(qū)、跨企業(yè)、跨院所地在整個(gè)行業(yè)中推廣成為可能，實(shí)現(xiàn)技術(shù)資源的重新整合，使虛擬制造成為可能。 (2)高速銑削加工 國外近年來發(fā)展的高速銑削加工，大幅度提高了加工效率，并可獲得極高的表面光潔度。另外，還可加工高硬度模塊，還具有溫升低、熱變形小等優(yōu)點(diǎn)。高速銑削加工技術(shù)的發(fā)展，對(duì)汽車、家電行業(yè)中大型型腔模具制造注入了新的活力。目前它已向更高的敏捷化、智能化、集成化方向發(fā)展。 (3)模具掃描及數(shù)字化系統(tǒng) 高速掃描機(jī)和模具掃描系統(tǒng)提供了從模型或?qū)嵨飹呙璧郊庸こ銎谕哪Ｐ退璧闹T多功能，大大縮短了模具的在研制制造周期。有些快速掃描系統(tǒng)，可快速安裝在已有的數(shù)控銑床及加工中心上，實(shí)現(xiàn)快速數(shù)據(jù)采集、自動(dòng)生成各種不同數(shù)控系統(tǒng)的加工程序、不同格式的DBD數(shù)據(jù)，用于模具制造業(yè)的“逆向工程”。 (4)提高模具標(biāo)準(zhǔn)化程度 我國模具標(biāo)準(zhǔn)化程度正在不斷提高，估計(jì)目前我國模具標(biāo)準(zhǔn)件使用覆蓋率已達(dá)到30%左右。國外發(fā)達(dá)國家一般為80%左右。 (5)優(yōu)質(zhì)材料及先進(jìn)表面處理技術(shù) 選用優(yōu)質(zhì)鋼材和應(yīng)用相應(yīng)的表面處理技術(shù)來提高模具的壽命就顯得十分必要。模具熱處理和表面處理是否能充分發(fā)揮模具鋼材料性能的關(guān)鍵環(huán)節(jié)。模具熱處理的發(fā)展方向是采用真空熱處理。模具表面處理除完善應(yīng)發(fā)展工藝先進(jìn)的激光表面處理等技術(shù)。 (6)模具研磨拋光 將自動(dòng)化、智能化模具表面的質(zhì)量對(duì)模具使用壽命、制件外觀質(zhì)量等方面均有較大的影響，研究自動(dòng)化、智能化的研磨與拋光方法替代現(xiàn)有手工操作，以提高模具表面質(zhì)量是重要的發(fā)展趨勢(shì)。 (7)模具自動(dòng)加工系統(tǒng)的發(fā)展 這是我國模具工業(yè)長(zhǎng)遠(yuǎn)發(fā)展的目標(biāo)。模具自動(dòng)加工系統(tǒng)應(yīng)有多臺(tái)機(jī)床合理組合；配有隨行定位夾具或定位盤；有完整的機(jī)具、刀具數(shù)控庫；有完整的數(shù)控柔性同步系統(tǒng)；有質(zhì)量監(jiān)測(cè)控制系統(tǒng)。作為用戶當(dāng)然要選合適的設(shè)備，如果選型不當(dāng)，不但不能賺錢反而令陷入為機(jī)器打工的苦澀局面。 三現(xiàn)代模具制造技術(shù)的發(fā)展趨勢(shì) 模具技術(shù)未來發(fā)展趨勢(shì)主要是朝信息化、高速化生產(chǎn)與高精度化發(fā)展。因此從設(shè)計(jì)技術(shù)來說，發(fā)展重點(diǎn)在于大力推廣DBD/DBE/DBM技術(shù)的應(yīng)用，并持續(xù)提高效率，特別是板材成型過程的計(jì)算機(jī)模擬分析技術(shù)。模具DBD、DBE技術(shù)應(yīng)向宣人化、集成化、智能化和網(wǎng)絡(luò)化方向發(fā)展，并提高模具DBD、DBM系統(tǒng)專用化程度。為了提高DBD、DBE、DBM技術(shù)的應(yīng)用水平，建立完整的模具資料庫及開發(fā)專家系統(tǒng)和提高軟件的實(shí)用性十分重要。 從加工技術(shù)來說，發(fā)展重點(diǎn)在于高速加工和高精度加工。高度加工目前主要是發(fā)展高速銑削、高速研拋和高速電 加工及快速制模技術(shù)。高精度加工目前主要是發(fā)展模具零件精度1m以下和表面粗糙度Pa0.1m的各種精密加工。 四、現(xiàn)代模具的制造 1.CAD/CAE/CAM計(jì)算機(jī)輔助設(shè)計(jì)、模擬、制造一體化 CAD/CAE/CAM一體化集成技術(shù)是現(xiàn)代模具制造中最先進(jìn)最合理的生產(chǎn)方式。使用計(jì)算機(jī)輔助設(shè)計(jì)、輔助工程與制造系統(tǒng)，按設(shè)計(jì)好的模具零件分別編制該零件的數(shù)控加工程序是從設(shè)計(jì)到制造的一個(gè)必然過程，該過程都是從CAD/CAE/CAM系統(tǒng)內(nèi)進(jìn)行的，其加工程序直接由聯(lián)機(jī)電纜輸入加工機(jī)臺(tái)，在編制程序時(shí)可利用系統(tǒng)中的加工模擬功能，將零件刀具、刀柄、夾具，平臺(tái)及刀具移動(dòng)速度、路徑等顯示出來，以檢查程序編制的正確性。總之在CAD/CAE/CAM系統(tǒng)內(nèi)編制和模擬加工程序可以充分了解發(fā)現(xiàn)的問題，從而在加工之前，將整套加工程序作好完善修改工作，這對(duì)于高效、準(zhǔn)確的加工模具零件有著相當(dāng)重要的意義。 2.先進(jìn)設(shè)備在現(xiàn)代模具制造中的作用 現(xiàn)代模具制造的必然趨勢(shì),就是機(jī)械加工盡可能地取代人工加工，尤其現(xiàn)在數(shù)控車床、多軸聯(lián)動(dòng)機(jī)床、數(shù)控模具雕刻機(jī)、電火花加工機(jī)床、數(shù)控精密磨床、三坐標(biāo)測(cè)量機(jī)、掃描儀等現(xiàn)代設(shè)備在工廠中的廣泛使用，而且這些設(shè)備大部分所用的程序基本上都是應(yīng)用CAD/CAE/CAM系統(tǒng)產(chǎn)生的，操作人員工作按照規(guī)定的程序裝夾工件,配備刀具和操作，機(jī)臺(tái)就能自動(dòng)地完成加工任務(wù),并將理想的模具零件制造出來或?yàn)橄乱患庸すば蛲瓿梢?guī)定的部分。 3.模具材料及表面處理技術(shù) 因選材和用材不當(dāng)，致使模具過早失效，大約占失效模具的45%以上。在整個(gè)模具價(jià)格構(gòu)成中，材料所占比重不大,一般在20%30%,因此，選用優(yōu)質(zhì)鋼材和應(yīng)用表面處理技術(shù)來提高模具的壽命就顯得十分必要。對(duì)于模具鋼來說,要采用電渣重熔工藝，如采用粉末冶金工藝制造的粉末高速鋼等。模具鋼品種規(guī)格多樣化、產(chǎn)品精細(xì)化、制品化，盡量縮短供貨時(shí)間亦是重要發(fā)展趨勢(shì)。 模具熱處理的主要趨勢(shì)是：由滲入單一元素向多元素共滲、復(fù)合滲（如TD法）發(fā)展；由一般擴(kuò)散向CVD、PVD、PCVD、離子滲入、離子注入等方向發(fā)展；另外，目前對(duì)激光強(qiáng)化、輝光離子氮化技術(shù)及電鍍（刷鍍）防腐強(qiáng)化等技術(shù)也日益受到重視。 五、逆向工程 逆向工程即先對(duì)制件（所加工的產(chǎn)品）進(jìn)行掃描生成多種格式的CAD數(shù)據(jù)，再在另外的CAD/CAE/CAM軟件中進(jìn)行改型設(shè)計(jì)，該技術(shù)是現(xiàn)代模具制造中最流行的模具制造技術(shù)。英國雷尼紹公司專門為模具制造開發(fā)生產(chǎn)的掃描系統(tǒng)，就可以成功地應(yīng)用于模具制造的逆向工程中，它不僅可以改善數(shù)控機(jī)床的性能，擴(kuò)大數(shù)控機(jī)床的功能，而且還能提高數(shù)控機(jī)床的效率。雷尼紹公司的R e t r o s c an、Renscan200、Cyclone 高速掃描機(jī)已被青島海爾、濟(jì)南輕騎、國家模具中心等單位開始使用。 六、總結(jié)與展望 隨著計(jì)算機(jī)軟件的發(fā)展和進(jìn)步，CAD/CAE/CAM技術(shù)也日臻成熟，其現(xiàn)代模具中的應(yīng)用將越來越廣泛?？梢灶A(yù)料不久的將來，模具制造業(yè)將從機(jī)械制造業(yè)中分離出來，而獨(dú)立成為國民經(jīng)濟(jì)中不可缺少的支柱產(chǎn)業(yè)，與此同時(shí)，也進(jìn)一步促進(jìn)了模具制造技術(shù)向集成化、智能化、益人化、高效化方向發(fā)展。Modern mold making I. The stamping die development history and status of technology In 1953, the Changchun First Automobile Works in China for the first time established a die shop, the car plant in 1958 began manufacturing automotive panel die. 60 years of the 20th century began producing fine blanking dies. Come a long road of development, China has formed about 300 billion (not including Hong Kong, Macao and Taiwan statistics.) Production capacity of various types of stamping dies. Formed, such as Ningbo and Zhejiang HUANGYAN region Die village; Guangdong Corporation and some large rapid rise of township enterprises, K el o n, M id e a, K on ka and other groups have established their own mold manufacturing center; joint ventures and wholly foreign-owned the mold companies now have thousands. With the pace with international standards continues to accelerate, increasing market competition, production and design of the mold has been growing recognition that product quality, cost, and new product development capacities. Mold manufacturing technology to measure a countrys manufacturing sector has become an important indicator of the level, and largely determine the survival space. At present, China stamping die, whether in quantity or in quality, technology and other capabilities have made significant progress, but with national needs and the world advanced level, the gap is still great. In the international competition situation, I had the mold industry has rapidly developed, many specialized research centers continue to die set up, mold steel of the structure and made significant achievements, but there is still a big gap. First, imports of high-tech mold most of the large precision molds, mold and exports most of the lower middle and low-tech die, so high-tech high-grade die stamping die market, the overall satisfaction rate is lower than satisfaction rate, which mold development has lagged behind the production of stamping parts, and low-technology market to meet the rate of middle and low die stamping die is higher than the overall market to meet the rate; second is due to the price of the mold is much lower than international market prices, has some competition force, so its prospects in the international market; third in recent years, Hong Kong-and Taiwan-owned, foreign-funded enterprises in China developed rapidly in a large number of these enterprises stamping dies produced for own use no precise statistics, it is not included in the figures being. II. Modern mold manufacturing technology development The development of modern technology should die mold products to meet the short delivery time, high precision, good quality, low price request for service. Urgent need to develop to meet this requirement as a number of this. (1)To comprehensively promote universal DBD / DBM / DBE technology Die DBD / DBM / DBE technology is the development direction of mold design and manufacturing. With the computer software development and progress, universal DBD / DBM / DBE technology, conditions are ripe, the businesses will increase DBD / DBM technical training and technical service efforts; further expand the scope of DBE technology. The development of computers and networks are making DBD / DBM / DBE technology trans-regional, cross-enterprise, campus-wide in the industry as possible to promote and achieve re-integration of technical resources to enable virtual manufacturing possible. (2) High-speed milling The development of foreign high-speed milling process in recent years, significantly improve the processing efficiency, and to get a high surface finish. In addition, the module can also be processed with high hardness, but also with low temperature rise, thermal deformation and so on. High-speed milling technology, automotive, home appliance manufacturing industry in the large cavity mold injected new vitality. It currently has more agile, intelligent, integrated direction. (3) die scanning and digitizing system High-speed scanner provides scanning system and mold from the model or in kind to the processing of the scanned model of the desired number of features required, greatly reducing the manufacturing cycle in the development of mold. Some quick scan system can be quickly installed in existing CNC milling machine and machining center, for fast data acquisition, automatic generation of a variety of CNC machining process, the DBD data in different formats, for mold manufacturing reverse engineering . (4) the degree of standardization to improve die Degree of standardization of the mold is increasing, estimates that the current use of standard mold coverage has reached about 30%. Developed countries is generally about 80%. (6) high-quality materials and advanced surface treatment technology Application of high quality steel and the corresponding surface treatment technology to improve the life of the mold it is very necessary. Mold heat treatment and surface treatment can fully mold steel material properties play a key part. Direction of development of mold heat treatment is the use of vacuum heat treatment. In addition to the mold surface should improve the development of advanced technologies such as laser surface treatment. (7) Mold Polishing Automation, intelligent mold surface quality of mold life, the appearance of quality parts and so have a greater impact of automation and intelligence of the grinding and polishing methods replace the existing manual in order to improve the quality of the mold surface is important trends. (8) die development of automatic processing system This is our long-term development goals mold industry. Automatic mold machine processing system should be more than the rational combination; with accompanying plate positioning fixture or positioning; a complete equipment, tool CNC database; a complete CNC flexible synchronization system; a quality monitoring and control system. Of course, as the user to choose the right equipment, if the selection properly, not only can not make money but make the machine work into the bitter situation. III. Modern mold manufacturing technology trends Die technology is mainly towards the future development trend of information technology, high-speed high-precision production and development. Therefore, the design technology, the development focus is to promote DBD / DBE / DBM technology, and continue to improve efficiency, especially in sheet metal forming process of the computer simulation analysis. Die DBD, DBE technology should be declared human, integration, intelligence and network direction, and improve the mold DBD, DBM system-specific level. To improve the DBD, DBE, DBM technology, establish a complete database and development of the mold expert systems and improve software usability is very important. From the processing technology, the development focused on high-speed processing and precision machining. At present, the development of highly processed high-speed milling, high speed polishing and high-speed electronic processing and rapid tooling technologies. At present, the development of precision machining parts precision mold and the surface roughness of less 1m Pa 0.1m variety of precision machining. IV. The modern mold manufacturing 1.CAD/CAE/CAM computer-aided design, simulation, manufacturing integration CAD / CAE / CAM integration, integration technology is the most advanced modern mold making the most reasonable mode of production. Use of computer-aided design, support engineering and manufacturing systems, according to the respective mold parts designed to prepare the NC machining of parts from design to manufacturing process is an inevitable process, which is from CAD / CAE / CAM system carried out, The processing line cable input directly from the processing machine, can be used in the preparation of procedures of processing the system analog functions, will be part tool, tool holder, fixture, platform and tool speed, path, etc. are displayed, to check the program prepared correctness. In short the CAD / CAE / CAM system development and simulation of processing can not fully understand the problems identified, resulting in processing prior to prepare the complete set of processing change work, which for the efficient and accurate processing of the mold has a very important part . 2. Advanced equipment in the modern mold making role The inevitable trend of modern mold making, machining is possible to replace the manual process, especially now that CNC lathes, multi-axis machine tools, CNC mold engraving machine, EDM machine, CNC precision grinding machines, coordinate measuring machines, scanners and other modern equipment widely used in factories, but most of these devices are basically the application of the procedures used CAD / CAE / CAM system to produce, the operator of work procedures in accordance with the provisions of work piece clamping, with a cutting tool and operation of the machine will be able to automatically complete the processing tasks, and created the ideal mold parts or complete the processing operation for the next part. 3. Die materials and surface treatment technology Due to improper selection and use of materials, resulting in premature failure of the mold, which accounts for more than 45% die failure. Price structure throughout the mold, the materials, the proportion of small, generally 20% to 30%, therefore, the choice of high quality steel and application of surface treatment technology to improve the life of the mold it is very necessary. For tool steel, the ESR technique to be used, such as the use of powder metallurgy high speed steel powders manufactured. Variety of different specifications tool steel, refined products, products of, try to shorten the delivery time is also an important trend. Mold heat treatment of the main trends: the infiltration of a single element to the multi-element penetration, complex permeability (such as TD method) development; by the general spread of the CVD, PVD, PCVD, ion penetration, ion implantation and other direction; addition, the current laser enhanced glow plasma technology and electroplating (plating) and other anti-corrosion technology to strengthen more and more attention. V. Reverse engineering Reverse engineering is the first of the parts (the processing of the product) to scan the CAD data generated in multiple formats, and then in the other CAD / CAE / CAM software in the modified design, the technology is the most popular modern mold manufacturing mold manufacturing technology. mold manufacturing company dedicated to development and production of the scanning system, it can be successfully applied to reverse engineering, mold manufacturing, it can not only improve the performance of CNC machine tools, expanding the function of CNC machine tools, CNC machine tools but also improve efficiency., Renscan200, Cyclone high-speed scanner has been Qingdao H a I e r, Jinan Q I n g q i, national mold center and other units started. VI. Summary and Outlook With the development and progress of computer software, CAD / CAE / CAM technology is getting more mature, and its application in the modern mold will become more widespread. Can be expected in the near future, mold manufacturing to separate from the machine manufacturing industry, and independent national economy to become an indispensable pillar industries, while also further promote the integration of the mold manufacturing technology, intelligence, beneficiary , efficient direction.