freepeople性欧美熟妇, 色戒完整版无删减158分钟hd, 无码精品国产vα在线观看DVD, 丰满少妇伦精品无码专区在线观看,艾栗栗与纹身男宾馆3p50分钟,国产AV片在线观看,黑人与美女高潮,18岁女RAPPERDISSSUBS,国产手机在机看影片

正文內(nèi)容

外文翻譯---數(shù)控技術發(fā)展趨勢及對策-數(shù)控設計-文庫吧

2025-04-17 09:34 本頁面


【正文】 、重點行業(yè)關鍵設備等)帶動數(shù)控產(chǎn)業(yè)的發(fā)展。重點解決數(shù)控系統(tǒng)和相關功能部件(數(shù)字化伺服系統(tǒng)與電機、高速電主軸系統(tǒng)和新型裝備 的附件等)的可靠性和生產(chǎn)規(guī)模問題。沒有規(guī)模就不會有高可靠性的產(chǎn)品;沒有規(guī)模就不會有價格低廉而富有競爭力的產(chǎn)品;當然,沒有規(guī)模中國的數(shù)控裝備最終難以有出頭之日。 在高精尖裝備研發(fā)方面,要強調(diào)產(chǎn)、學、研以及最終用戶的緊密結合,以 “ 做得出、用得上、賣得掉 ” 為目標,按國家意志實施攻關,以解決國家之急需。 在競爭前數(shù)控技術方面,強調(diào)創(chuàng)新,強調(diào)研究開發(fā)具有自主知識產(chǎn)權的技術和產(chǎn)品,為我國數(shù)控產(chǎn)業(yè)、裝備制造業(yè)乃至整個制造業(yè)的可持續(xù)發(fā)展奠定基礎。 參考文獻: [ 1] 中國機床工具工業(yè)協(xié)會 行 業(yè)發(fā)展部 .CIMT2020 巡禮[ J] .世界制造技術與裝備市場,2020(3): 1820. [ 2] 梁訓王宣 ,周延佑 .機床技術發(fā)展的新動向[ J] .世界制造技術與裝備市場, 2020(3): 2128. [ 3] 中國機床工具工業(yè)協(xié)會 數(shù)控系統(tǒng)分會 .CIMT2020巡禮[ J] .世界制造技術與裝備市場,2020(5): 1317. [ 4] 楊學桐,李冬茹,何文立,等 。 距世紀數(shù)控機床技術發(fā)展戰(zhàn)略研究[ M] .北京:國家機械工業(yè)局, 2020 Numerical control technology of development and countermeasure 1 numerical control technology trend of development Not only the numerical control technology application has brought the revolutionary change for the traditional manufacturing industry, causes the manufacturing industry to bee the industrialization the symbol, moreover along with numerical control technology unceasing development and application domain expansion, he to national economy and the people39。s livelihood some important professions (IT, automobile, light industry, medical service and so on) development more and more vital role, because these professions must equip the digitization already was the modern development major tendency. The numerical control technology and the equipment development tendency looked from the present world that, its main research hot spot has following several aspect [1~4]. high speed, high precision work technology and equipment new tendency The efficiency, the quality are the advanced technique of manufacture main bodies. High speed, the high precision work technology may enhance the efficiency enormously, enhances the product the quality and the scale, reduces the production cycle and sharpens the market petition ability. Lists as one of 5 great modern techniques of manufacture for this Japan Tip Technology Research board it, the international production project learns (CIRP) its determination is one of 21st century central research directions. In the passenger vehicle industry domain, yearly produces 300,000 production metres was 40/s, moreover the multivariety processing is one of key questions which the passenger vehicle equipment must solve。 In the aviation and the astronavigation industry domain, its processing spare part many for the thin wall and the thin muscle, the rigidity is very bad, material for aluminum or aluminum alloy, only then in the high cutting speed and the cutting force very small situation, can to these muscles, the wall carry on the processing. Recently uses the largescale overall aluminum alloy semifinished materials “pull out spatially” the method to make the wing, the fuselage and so on the largescale ponents substitutes many ponents through the multitudinous rivets, the bolt and other joint way assembling, causes the ponent the intensity, the rigidity and the reliability obtains the enhancement. These all to processed the equipment to propose high speed, Gao Jing and the high flexible request. Unfolds from EMO2020 meets the situation to look that, processes the center feed rate to be possible high speed to reach 80m/min, even higher, the aerial transport stroke speed may reach 100m/About min. At present in the world many automotive factories, including our country39。s Shanghai General Motors, already used by the high speed processing center position production line part substitution aggregate machinetool. American CINCINNATI Corporation39。s HyperMach engine bed feed rate reaches 60m/most greatlymin, fast is 100m/min, the acceleration reaches 2g, the main axle rotational speed has reached 60 000r/min. Processes a thin wall airplane part, only uses 30min, but the same ponents need 3h in the mon high speed milling machine processing, needs 8h in the plain milling machine processing。 The German DMG Corporation39。s double main axle lathe main axle speed and the acceleration respectively reach 12*! 000r/mm 和 1g。 In the processing precision aspect, in the recent 10 years, the ordinary level numerical control engine bed processing precision from 10μm enhanced 5μm, the fine level of secrecy processing center from 3~5 μm, enhances to 1~ μm, and the ultra precise processing precision started to enter a nanometer level (). In the reliable aspect, the overseas numerical control installment value has reached above 6 000h, the servosystem value achieved above 30000h, displays the extremely high reliability. In order to realize, the high precision work high speed, with it necessary function part like electricity main axle, the straight line electrical machinery obtained the fast development, the application domain further expanded. 5 axis linkage processing and pound processing engine bed fast development Uses 5 axis linkages to the three dimensional curved surface ponents processing, the available cutting tool best geometry shape carries on the cutting, not only the smooth finish is high, moreover the efficiency also large scale enhances. Believed generally that, 1 5 axis linkage engine bed efficiency may be equal to 2 3 axis linkage engine bed, specially uses when the cubic boron nitride and so on the ultra hard material milling cutter carries on the high speed milling hardened steel ponents, 5 axis linkage processing may pared to 3 axis linkage processing display a higher benefit. Because but past 5 axis linkage numerical control system, main engine structure plex and so on reasons, its price must outdo
點擊復制文檔內(nèi)容
畢業(yè)設計相關推薦
文庫吧 www.dybbs8.com
備案圖鄂ICP備17016276號-1