This paper applies the concept of "contact" in Differential Geometry into the machining of sculptured surfaces, presentes the contact principle of the machining of complicated surfaces, using the circumference circle of the cylindrical cutter to sweep curved surfaces instead of ball-end mill .

把微分幾何中曲線與曲面之間的&切觸&概念應(yīng)用于復(fù)雜曲面的數(shù)控加工，提出用圓柱銑刀和圓錐盤銑刀的外圓在五坐標(biāo)聯(lián)動中加工三維自由曲面的最佳切觸條件。

They help us understand the regulation of inner gas-flow field of coal ball mill and lay a foundation for further study in gas-particle property of the machine. At the same time, the conclusions offer beneficial reference for optimizing the machine structure design and controlling the inner flow field.

文中總結(jié)出磨煤機(jī)內(nèi)氣相流場隨磨煤機(jī)填充率和進(jìn)出口管道口徑變化的規(guī)律污小蝌蚪视频在线观看，為磨煤機(jī)的結(jié)構(gòu)優(yōu)化設(shè)計和實(shí)際生產(chǎn)中對磨煤機(jī)內(nèi)部流場進(jìn)行控制提供了有益的參考欧美一级电影在线看。

In order to increase the rolling capability of three-high cogging mill,the forging plant of Laigang reforms the traditional cogging process,joining the six angle-square pass with box pass well and designing the six angle pass with heavy elongation to realize conjugate rolling,thus realizing the heavy reduction,heavy elongation for cogging rolling and single end product outing and self nip,improving the rolling rhythm.

為提高三輥開坯軋機(jī)的軋制能力欧美一级AAAAAA片在线看，萊鋼鍛壓廠對傳統(tǒng)的開坯工藝進(jìn)行改造欧美日韩国产综合草草，將六角—方孔型與箱形孔良好銜接，并設(shè)計了能夠共軛軋制的大延伸六角孔黄色手机黄色网站在线播放，從而實(shí)現(xiàn)了開坯軋制大壓下亚洲欧美日韩一区在线、大延伸，以及成品單出與自動咬入插插99，提高了軋制節(jié)奏澳门人人摸人人操。

In this paper,two experimental methods had been adopted to verify the correctness and practicality of the shape meter method:one is to roll aluminum plate and calculate the shape stiffness of mill and rolled piece,then survey aluminum plate crown to verify shape stiffness equation ;the other is to calculate survey data off line of hot continuous roll.

采用兩種實(shí)驗(yàn)方式驗(yàn)證了板形計法的正確性和實(shí)用性，其一是通過軋鋁板實(shí)驗(yàn)日韩精品片在线观看网站，計算軋機(jī)板形剛度和軋件板形剛度丰满少妇A级毛片野外，由實(shí)測鋁板凸度驗(yàn)證板形剛度方程；其二是由CVC板形控制熱連軋機(jī)實(shí)測數(shù)據(jù)欧美性爱视频自拍偷拍，用離線計算自適應(yīng)系數(shù)的方法驗(yàn)證板形測控數(shù)學(xué)模

As for the high-performance Shelby models, previous reports claimed the GT500 will eventually adopt a supercharged version of the new 5.0L V8 in place of the current 5.4L mill.

至于高性能的謝爾比模式国产一级黄网站，以前的報告中聲稱， GT500將最終通過增壓版本的新的5.0L V8發(fā)動機(jī)天美自拍乱码在线播放视频，以取代目前的5.4L軋機(jī)免费精品国产高清在线观看。

By measuring the residual stresses of the cylinder of a cement ball mill in four cases,and the fatique crack spreading for the thermal treatment and the un thermal treatment test samples,the results showed that the heat treatment sample reduced the residual stress,enhanced the fatique strength and lowered the crack spreading speed.

對球磨機(jī)筒體的4種情況的焊件進(jìn)行殘余應(yīng)力測試，并對進(jìn)行熱處理和未進(jìn)行熱處理的試件做疲勞試驗(yàn)及疲勞裂紋擴(kuò)展測試自拍美日韩在线视频网站免费。試驗(yàn)結(jié)果表明：經(jīng)過熱處理的試件手机在线看永久AV片免费无毒，殘余應(yīng)力降低美女黄网站一区二区，疲勞強(qiáng)度提高欧美日韩在线视，裂紋擴(kuò)展速率降低，結(jié)構(gòu)抗疲勞性能增強(qiáng)欧美一级,日韩三级。不過從工程應(yīng)用角度看欧美老年性生活视频，對于板厚為20～25mm的球磨機(jī)筒體而言，不進(jìn)行焊后熱處理也能保證足夠的疲勞強(qiáng)度

The producting whole hard alloy drill bit,the milling cutter,the reamer, the gauge feeler,the spiral end mill and so on other non-sign cutting tools,mainly use in astronautics,the aviation,the automobile,the motorcycle engine,the air conditioning compressor,the movement equipment,the mold and soon each kind of CNC machine-finishing domain.

生產(chǎn)的整體硬質(zhì)合金鉆頭亚洲黄色视频电影、銑刀A片免费观看久、鉸刀、塞規(guī)手机看片1024人妻久久性色、螺旋立銑刀等其它非標(biāo)刀具思思玖玖，主要用于航天、航空av超碰av超碰人人爱、汽車亚洲人成网网址在线看、摩托車發(fā)動機(jī)、空調(diào)壓縮機(jī)bbixxcon在线观看、運(yùn)動器材无码国内精品麻豆久久人妻、模具等各類CNC機(jī)械加工領(lǐng)域。

The paper analysed the characteristics of noise pollution in cement plant harm to human health, and emphasized the control theory and detail method of noise from ball mill and fan, fianlly put forward the control measure.

文章分析了水泥廠噪聲污染的特點(diǎn)，闡述了噪聲對人健康的危害日本黄色视频网址，重點(diǎn)分析了球磨機(jī)和風(fēng)機(jī)噪聲的控制原理和具體方法欧美草草操在线视频，提出了綜合治理的措施。

The service condition,the strained status and the failure form of the grinding balls in mill were analyzed and studied.

對球磨機(jī)中磨球的工作情況色久是色、受力情況及失效形式進(jìn)行了分析研究www又湿又大。

In order to improve the condition of guide device of 3 500 mm finish mill and reduce the failure rate,a series measures were adopted: ameliorating hanging position of the guard plate,optimizing occlusal surface parameter of the uide wien guard tlate,altering guard plate location mode when changing roll,redesigning the bottom of guard sheet.

為改善3 500 mm精軋機(jī)導(dǎo)衛(wèi)裝置設(shè)備狀況，減少故障一本二本三本黄色视频，改進(jìn)了護(hù)板吊掛方式怡红院最新地址，優(yōu)化了導(dǎo)板與護(hù)板咬合面參數(shù)，改變了換輥時護(hù)板定位方式精品久久九九九久久久久国产，重新設(shè)計了護(hù)板底部形狀69视频在线免费看，消除了安全隱患，滿足了高質(zhì)量快節(jié)奏生產(chǎn)的要求A级毛片喷潮高清免费观看。