【正文】 rmidable friction force, as well as in the processing process midd le axle directive force mutual counterbala nce, is also eliminated in the Z degree of freedom. When carries on to IV location, when processing crosswise hole, X1, Y1, the Z1 degree of freedom was eliminated, X2, the Y2 direction degree of freedom was also eliminated, in Z2 direction, because the cla mp function caused the work piece also to eliminate at the Z2 direction degree of freedom. 5 attacks the silk insta llment Attacks the system thread when the aggregate machinetool, according to is processed the ponents processing spot the distributed situation and the technologica l requirement and so on, monly used attacks the silk method to have 3 kinds: Uses attacks the silk power taper tap silk, uses attacks the silk insta llment to attack the silk and to use the activity to attack the silk template to attack the silk. In this design, the right half part pletes V, VI location processing. Electrica l machiner y only then power, therefore the synthesis considera tion selects attacks the silk insta llment to attack the silk. When puts in order the Taiwan engine bed or the engine bed some pletely uses in pleting at the same time attacks the silk working procedure, widely uses has attacked the silk insta llment. Attacks the silk insta llment by to attack the silk headstock and to attack the silk to depend on the die head to be posed, because the profile nut and the profile pole are after rubs truncates and matches grinds, its pitch request with must process the spiral hole the pitch to ma inta in the certain relations, and is equipped with the pitch error to pensate the organization. Therefore uses attacks the silk insta llment to carry on attacks the silk to be possible to achieve the high precision. 6 aggregate machinetools cooling system The engine bed refrigera nt besides gets up the cooling effect to the cutting tool and the work piece, but also can form the lubr ication thin film in the meta l surface, gets up to the lubr ication. In some refrigera nts includes the sodium carbonate, the sodium nitrite and so on guards against rust the med icina l preparation, they form the porodine adsorption membrane or the oxide pound thin film in the meta l surface, also can cause the meta l to exempt the function which corrodes. Thus time choice refriger ant, should plete the craft, the processing method, the cutting tool materia l as well as is processed the ponents according to the aggregate machinetool the 4 徐州 工 程 學 院 畢 業(yè) 設 計 (論文 )materia l to decide. Casts the iron stock when the processing, because cast irons itself includes the graphite to be able own lubr ication, all does not add the refrigera nt genera lly. In mass productions sometimes in order to reduce in the processing the powdered iron to fly upwards, also increases the cooling system, by improves the operating condition. Sometimes ma y use the soda water, 5% emulsion, its emulsifier principal constituent ma y be oxidizes the grease or the sulfurized oil. Its formula is: The grease 2% ~ 5%, the rough machining takes the low value, the precision work takes the high value。劃 分工序可以有兩種趨向：工序集中和工序分散。 主要工位經分析選取以下方案：1)裝卸、夾緊；2)；3)鉆3個孔一個為f14，鉆2個螺紋底孔f14，孔號為9；4)鉆橫向孔f14；5)；6)攻絲。4）.由表1可知1～7號孔，以及8～ mm，它所需要的 導套長度為(32～40)mm， )mm。 加工直徑：；切削用量：v=(8～10)m/min，s=，轉速280r/min；擴孔 鉆刀桿及導向部分的公稱直徑d+；擴孔鉆公差：；刀桿導向部分公差：～；導套內徑公差：+～。 式中：N動為動力頭電機功率；N切為切削功率，按各刀具選用的切削用量，由“組合機 床的切削力及功率計算公式”中已求出；N進為進給功率，對于液壓動力頭就是進給油泵所 7 徐州 工 程 學 院 畢 業(yè) 設 計 (論文 )消耗的功率，一般為(～2)kW；h為傳動效率，當主軸箱少于15根時，h=，多于15根時，h=。 ，查Y系列三相異步電動機表， ，選用此型號電機比較合適。一個物體在空間可以 有6個獨立的運動，即沿X、Y、Z軸的平移運動，分 別記為X Y Z 1；繞X、Y、Z軸的轉動，記為X Y Z 2，習慣上，把上述6個獨立 運動稱作6個自由度。 確定夾緊力作用點的位置時應不破壞定位。2）.定位夾緊方案的確定3）.此零件屬于空心圓形鑄件，一般的定位元件有V形塊、定位套筒作半圓形定位， 如果選用V形塊定位的話，在Z軸方向移動以及繞X、Y軸旋轉的自由度已經消除，在鉆 頭進行加工時，繞Z軸轉動的自由度卻無法消除，所以用V形塊定位的方案是行不通的。 如圖3所示，在此壓板的作用下，沿X軸旋轉X 2，以及沿Z軸旋轉Z 2和沿Z軸方向Z 1自由度都被限制。 在此設計中，右半部分完成Ⅴ、Ⅵ工位的加工。因此利 用攻絲裝置進行攻絲可以達到較高的精度。 在加工鑄鐵件時，由于鑄鐵本身含有石墨能自身潤滑，一般都不加冷卻液。%～%。 9徐州 工 程 學 院 畢 業(yè) 設 計 (論文 )冷卻液的流量應根據(jù)刀具