This article pays more attention to research how to design punching moulds and optimize techniques during punching case shells of mobile telephone with magnesium alloy in the crank machine press.

本文研究了在曲柄壓力機(jī)上用鎂合金板材沖壓手機(jī)外殼的模具設(shè)計(jì)和工藝制度欧美午夜一级AAAAAA，研究了坯料溫度很黄很黄的免费视频在线观看，模具溫度少妇一区二区无码播放，潤(rùn)滑條件等工藝因素對(duì)鎂合金手機(jī)外殼沖壓質(zhì)量的影響www.丝袜av.com。

Hybrid input crank type press optimum design servo-motor

混合輸入；曲柄壓力機(jī)人人操人人做人人骑人人插；優(yōu)化設(shè)計(jì)加勒比官网中文在线；伺服電機(jī)

Experiments show that, in applying the correct mold structure and appropriate process conditions, when the temperature at 350 ° C billets around Rafah Deep Mold temperature at 350 ° C and about good lubrication circumstances, can be successful in stamping on the crank press to produce magnesium phone alloy shell.

實(shí)驗(yàn)表明，在應(yīng)用正確的模具結(jié)構(gòu)和適當(dāng)?shù)墓に嚄l件下好男人www好看视频，當(dāng)坯料溫度在350℃左右手机黄色免费小视频一区二区三区，拉深凹模溫度在350℃左右和良好潤(rùn)滑情況下www.,成年人视频，能夠成功地在曲柄壓力機(jī)上沖壓生產(chǎn)出鎂合金手機(jī)外殼。用英文翻譯一下哦Ｈ似蘼堂弊勇厶场Ｃ夥鸦粕凡豢ā！Ｔ谙呙夥压劭茨愣谩Ｇ榫镁霉谝灰场！Ｈ蘸客嘣谙呔肥悠翟谙摺９肪镁镁镁镁稟级水多多?9视频.com！謝謝欧美日韩一区二区乱码。。98人妻在线免费公开观看。91最新黄色视频网资源。。www.cao.com。什么网站看毛片片免费观看。?/p>

The upsetting test of metal powder sintered preform by blow speed of the hydraulic press,crank press,pneumatic hammer and high energy rate forging hammer was reported.

研究了用液壓機(jī)aa黄色、曲柄壓力機(jī)四房播色综合久久综合网、空氣錘及高速錘的打擊速度對(duì)粉末冶金燒結(jié)體進(jìn)行的鐓粗試驗(yàn)。

The multi- connecting rods press is one kind new press which taking the multi- linkmotion gear as the operating mechanism.The slide has the obviously comes back promptly kinematics the characteristic.In work sector,The slide"s speed is steady, and is lower than the crank press greatly, this is advantageous to enhance quality of the big distorts stretch. At the same time it reduces the impact between the molds and lengthen the mold"s service life.

多連桿壓力機(jī)是一種以多連桿機(jī)構(gòu)為工作機(jī)構(gòu)的新型壓力機(jī)色色资源站网，滑塊具有明顯的急回運(yùn)動(dòng)特性成年女人爽到高潮的视频免费，在工作區(qū)間，滑塊速度平穩(wěn)日韩一级欧美一级作爱，并且大大低于曲柄壓力機(jī)国产办公室视频在线播放，這有利于提高變形較大的拉伸件的質(zhì)量，同時(shí)減少模具間的沖擊欧美操逼日本a操逼，延長(zhǎng)模具使用壽命黄色视频在线的。

High-speed precision press; crank and slider mechanism; combined frame; simulation analysis; FEM; modal analysis

論文導(dǎo)師朱思洪，論文學(xué)位碩士免费看日本黄色视频，論文專業(yè)機(jī)械設(shè)計(jì)及理論

Advantages of traditional crank press technology include low production cost and high speed production rate (30~1200 pieces per minute). Requirements of complicated die and limited product forming are the shortcomings. Additionally, the advantages of traditional hydro-forming technology are good product quality, complicated geometric shape and easy-made die. However the disadvantages are expensive cost of equipment, low production speed (less than 5 pieces per minute), and is not applicable to multi-station progressive process and high pressure working environment that has the concern of industrial safety.

傳統(tǒng)曲軸沖壓技術(shù)之優(yōu)點(diǎn)是生產(chǎn)成本低廉及生產(chǎn)速度快(每分鐘30~1200件)亚洲欧美日韩精品视频一区，缺點(diǎn)是模具復(fù)雜及成品形狀成形性受限制；傳統(tǒng)液壓成形技術(shù)之優(yōu)點(diǎn)是成品品質(zhì)佳两女同互玩丝袜脚一区二区、幾何形狀容許大變形及模具簡(jiǎn)易老师性色欧美A在线播放，缺點(diǎn)是設(shè)備成本高、生產(chǎn)速度很慢(每分鐘5件以下)国产精品亚州国产在线手机版色、不適合多工程連續(xù)加工且具有高壓之工安問(wèn)題福利影院最新地址发布页。

But, undercut technology may deteriorate the stresss concentration. In order to improve the situation, for a crank throw of a given ductile iron crankshaft, finite element analysis is conducted. The analysis result is optimized and related fatigue calculation is carried out. A compare between calculation and test results is performed and compared results show that conculation result is reliable. Therefore a good undercut structure is found and the reliability of crankshaft is improved.

球鐵曲軸加沉割槽往往會(huì)加大曲軸的應(yīng)力集中狠狠操美女vs亚洲，根據(jù)某廠設(shè)計(jì)的球鐵曲軸，本論文利用有限元分析的方法色色亚洲色图一区，對(duì)其單拐曲軸的沉割槽進(jìn)行有限元模擬分析操碰免费视频在线观看，在分析結(jié)果的基礎(chǔ)上進(jìn)行優(yōu)化設(shè)計(jì)，最后得出較好的沉割槽結(jié)構(gòu)黄片啪啪啪啊啊啊，從而得到較好沉割結(jié)構(gòu)免费福利黄色网站，提高曲軸的可靠性。

Through analyzing the result, we can draw a conclusion that it is an effective way to increase the thickness of crank web than to increase the shaft diameter by the way which improves the rounded stress of the crankshaft from structural.

通過(guò)對(duì)計(jì)算結(jié)果的分析女人奶头视频不遮挡免费，得出在結(jié)構(gòu)上改善曲軸過(guò)渡圓角處應(yīng)力集中時(shí)中日韩人妻人人爽，增加曲柄臂厚度與增加軸頸直徑是較有效的方法，為某增壓發(fā)動(dòng)機(jī)曲軸的結(jié)構(gòu)設(shè)計(jì)提供了理論依據(jù)xxxx69。

AVL BRICKS software is used for torsional vibration calculation of the crankshaft if increasing the crank web radius but keeping the radius of conrod and main journal, which can reach the high performance.

利用AVL的BRICKS軟件對(duì)曲柄半徑加大而連桿及主軸頸半徑均未改變的曲軸進(jìn)行了扭振計(jì)算免费观看国产强奸视频，以確保曲軸能夠滿足較高性能的要求。