【正文】 滯流，在螺紋推進(jìn)面、后面也會形成類似的滯流。 在之間。過大的螺棱寬還會較少螺槽的容積。 采用這兩種螺頂結(jié)構(gòu)之后，雖然能減少螺桿和機(jī)筒的磨損，但是由于平均螺棱間隙δ加大，漏流量也將增大 20%左右。機(jī)頭壓力 P= 機(jī)筒熔融區(qū)溫度 Tb =150℃；室溫 Ts =20℃； （ 3）物料性能 加工物料：高壓聚乙烯（ LDPE），熔體流動率 MFR=； 固相密度ρ s =920kg/m3 。 徐州工程學(xué)院 08 屆本科生畢業(yè)設(shè)計(jì)（論文） 第 32頁 加料段： Z1 =φCosHD )( 1??=φCos )102610170( 33 ?? ???=。 質(zhì)量流 G==550kg/h= 103? k sg/ 。 與設(shè)定值相等，不必從新計(jì)算。 計(jì)算固相分布函數(shù) WX 及熔融總長度 ZT : 計(jì)算φ值 φ =dsmsjambmmbxTTcVTTkV???????)([2]21)([ 2 = )./( smKg 。 徐州工程學(xué)院 08 屆本科生畢業(yè)設(shè)計(jì)（論文） 第 37頁 參 考 文 獻(xiàn) [1] 吳宗澤 主編 .機(jī)械設(shè)計(jì)實(shí)用手冊 .冶金工業(yè)出版社 ,1999 [2] 吳圣莊 主編 .金屬切削機(jī)床 .機(jī)械工業(yè)出版社 ,1984 [3] 朱冬梅，胥北瀾等 .畫法幾何及機(jī)械制圖 .高等教育出版社 ,1999 [4] 陳宏鈞，馬素敏 .銑工操作技能手冊 .機(jī)械工業(yè)出版社 ,2021 [5] 機(jī)修手冊 ,金屬切削機(jī)床 修理第三卷 .機(jī)械工業(yè)出版社 ,1998 [6] 鄭堤 .數(shù)控機(jī)床與編程 . 機(jī)械工業(yè)出版社 ,2021 [7] 孫恒 陳作模 .機(jī)械原理（第六版） .高等教育出版社 ,2021 [8] 邱宣懷主編 .機(jī)械設(shè)計(jì) (第四版 ).高等教育出版社 ,2021 [9] 培訓(xùn)班資料 .螺旋錐齒輪加工調(diào)整技術(shù) .中國齒輪專業(yè)協(xié)會教育培訓(xùn)中心 ,2021 [10] 戴曙主編 .金屬切學(xué)機(jī)床設(shè)計(jì) .機(jī)械工業(yè)出版社 ,1985 [11] 謝家贏主編 .組合機(jī)床簡明手冊 .機(jī)械工業(yè)出版社， 1992 [12] 金振華主編 .組合機(jī)床及其調(diào)整與使用 .機(jī)械工業(yè)出版社 ,1984 [13] 章日晉等編 .機(jī)械零件的結(jié)構(gòu)設(shè)計(jì) .北京：機(jī)械工業(yè)出版社 ,1987 [14] 周開勤主編 .機(jī)械零件手冊（第四版） .北京：高等教育出版社 ,1994 [15] 張浚生主編 .金屬切削機(jī)床與數(shù)控機(jī)床 .機(jī)械工業(yè)出版社 ,2021 [16] ,Ceramic Tools,Compensating Spindles,up Boring Productivity,《 Machiery》 (),1996, [17] Numerical Control Technology, 武漢 :武漢理工大學(xué)出版社 ,2021 徐州工程學(xué)院 08 屆本科生畢業(yè)設(shè)計(jì)（論文） 第 38頁 翻譯部分 The new concept of cutting processing The nowadays cutting tool pany cannot only be again the manufacture and the sales cutting tool, in order to succeed, they must be consistent with the globalization manufacture tendency maintenance, through enhances the efficiency, cooperates with the customer reduces the cost. Approaches the instantaneous global petition after this after NAFTA, the WTO time, the world pany is making quickly to the same feeling, is lighter, a cheaper response. In other words, they make the product and the ponents contain can in high speed under revolve, as a result of the cost pressure, best, is lighter moreover must make cheaply. Obtains these goals a best way is through develops and applies the new material, but these is new and the improvement material usually all with difficulty processes. In in this kind of mercial power and the technical difficulty bination is especially prominent in the automobile and the aviation industry, and has bee has the experience the cutting tool pany to research and develop the department the most important driving influence. For example, takes the modular cast iron to say that, it has bee the engine part and other automobiles, the agriculture the material which see day by day with the equipment and in the machine tool industry ponents. This kind of alloy provides the low production cost and the good machine capability bination. They are cheaper than the steel products, but has a higher intensity and toughness pared to the cast iron. But at the same time the modular cast iron is extremely wearresisting, has fast breaks by rubbing the cutting tool material the tendency. In this wear resistant very great degree bead luminous body content influence. Some known modular cast iron bead luminous body content higher, its resistance to wear better, moreover its machinability is worse. Moreover, the modular cast iron porosity causes 徐州工程學(xué)院 08 屆本科生畢業(yè)設(shè)計(jì)（論文） 第 39頁 off and on to cut, this even more reduces the life. May estimate that, the high degree of hardness and the high wearresisting cutting material quality must consider the modular cast iron the high resistance to wear. And the material quality contains extremely hard TiC in fact (carbonized titanium) or TiCN (carbon titanium nitrides) thick coating when cutting speed each minute 300 meters processes the modular cast iron to prove usually is effective. But along with cutting speed increase, scrap/The cutting tool junction plane temperature also is increasing. When has such situation, the TiC coating favors in has the chemical reaction with the iron and softens, more pressures function in anti crescent moon hollow attrition coating. Under these conditions, hoped has one chemical stability better coating, like Al2O3 (although under low speed was inferior to TiC hard or is wearresisting). The chemical stability bees an important performance performance dividing line pared to the resistance to wear the factor, the speed and the temperature is decided in is processed the modular cast iron the crystal grain structure and the performance. But usually thick coating of TiCN and TiC or only ductile iron oxides in the soil coating is applied to, because the today majority of this kinds are processed the material the cutting speed in each minute 150 to 335 meters between. Is higher than each minute 300 meter applications regarding the speed, the people to this kind of material are satisfied. In order to cause this scope performance to be most superior, the mountain high researched and developed and has promoted in view of modular cast iron processing material quality TX150. This kind of material quality has hard also the anti distortion substrate, is very ideal regarding the processing modular cast iron. Its coating the oxide pound coating which hollowly wears by thick very wearresisting carbon titanium nitrides and a thin anti crescent moon, the top is thin layer TiN. This kind of coating which needs the center warm chemistry gas phase deposition using the state of the art production resistance to 徐州工程學(xué)院 08 屆本科生畢業(yè)設(shè)計(jì)（論文） 第 40頁 wear and the anti crescent moon hollow attrition which the CVD coating plete degree of hardness moreover the tough smoothness increases (MTCVD) the craft. Substrate/The coating bination performance gives the very high anti plastic deformation and the cutting edge micro collapses the ability, causes it to bee under the normal speed to process the modular cast iron the