【正文】 n 7 holes 。 4) drills crosswise hole f14。 Rotationa l speed 350r/Min. C. Expands with the hard alloy reamer reams 1 ~ 7 holes (V location) in V location, when expands the articulation 7 holes, uses expands the articulation pound cutting tool, enters for the quantity according to the reamer choice, the cutting speed according to the reamer choice, moreover enters for the quantity should select the permissible value according to the pound cutting tool most minor dia meter the upper limit, the cutting speed then selects the permissible value according to pound cutting tool most large dia meter the upper limit. Processing dia meter: 。 N enters for enters for the power, is enters regarding the hydraulic pressure power head for the oil pumping station consumption power, genera lly for ( ~ 2) kW。 劃分工序要考慮到生產(chǎn)的規(guī)模、加工的精度、所用機(jī)床的特點、機(jī)床負(fù)荷情況等。2）.導(dǎo)套設(shè)計 6徐州 工 程 學(xué) 院 畢 業(yè) 設(shè) 計 (論文 )3）.，加工孔的直徑與導(dǎo)套長度，導(dǎo)套內(nèi)徑尺寸，上下偏 差以及孔軸線理想位置的偏移的關(guān)系，如表1所示。 每一種規(guī)格的動力頭都有一定的功率范圍，根據(jù)所計算出的切削功率及進(jìn)給功率之需 要，并適當(dāng)提高切削用量的可能性，選用相應(yīng)規(guī)格的動力頭，公式如下：N動(N切+N進(jìn))/hkW。 這里討論6點定位中，6個自由度的消除，以便找出較合適的定 位夾緊方案。夾緊力作用點數(shù)目應(yīng)使工件在整個接觸面上受力均勻，接觸 8徐州 工 程 學(xué) 院 畢 業(yè) 設(shè) 計 (論文 )變形小。5攻絲裝置 在組合機(jī)床上攻制螺紋時，根據(jù)被加工零件加工部位的分布情況和工藝要求等，常用 的攻絲方法有3種：采用攻絲動力頭攻絲，采用攻絲裝置攻絲和采用活動攻絲模板攻絲。因而選擇冷卻液時，應(yīng)根據(jù)組合機(jī)床完成工藝 、 加工方法、刀具材料以及被加工零件的材料來決定。通常采用 煤油，亦可采用硫化切削液及混合油等。選擇合適的電機(jī)和動力頭，選擇恰當(dāng)?shù)那邢饔?量和切削速度。 各動力部件借助程序控制擋鐵，按規(guī)定順序進(jìn)行工作。其配方為：油膏2%～5%，粗加工取低值，精加工取高值。 攻絲裝置由攻絲主軸箱和攻絲靠模頭組成，由于靠模螺母和靠模桿是經(jīng)磨削并配研 的，其螺距要求與所需加工螺孔的螺距保持一定關(guān)系，并設(shè)有螺距誤差補償機(jī)構(gòu)。利用球頭螺栓使壓板緊壓住工件體?！皟梢亍?，方向與作用點夾緊力方向應(yīng)朝向定位元件，并使所需的夾緊力最 小。= 3）.選用電機(jī) 由于此機(jī)床在驅(qū)動方面沒有特殊的要求，選用普通也是最可靠的Y系列電機(jī)，它是封 閉自扇冷式鼠籠型三相異步電動機(jī)，取代J02系列的更新?lián)Q代產(chǎn)品?！?號孔(Ⅴ工位)在Ⅴ工位上，擴(kuò)鉸7個孔時，采用擴(kuò) 鉸復(fù)合刀具，進(jìn)給量按擴(kuò)孔鉆選擇，切削速度按鉸刀選擇，而且進(jìn)給量應(yīng)按復(fù)合刀具最小 直徑選用允許值的上限，切削速度則按復(fù)合刀具最大直徑選用允許值的上限。 由于此設(shè)計中所加工的零件10個孔中部分孔距離太近，不便于加工，所以分開為兩 個工位完成，然后進(jìn)行零件位置轉(zhuǎn)換。 Circles X, Y, the Z axis rotation, records is X2, Y2, Z2, in the custom, is called as the above 6 independence movement 6 degrees of freedom. If uses the certain restra int measure, eliminates the object 6 degrees of freedom, then the object is located pletely. When for example discussion cuboid work piece, ma y arrange 3 not altogether lines in the bottom surface the obligator y points, arranges 2 obligator y points in the facade, arranges an obligator y point in the end surface, then the bottom surface obligator y point ma y limit X2, Y2, a Z23 degree of freedom, the facade obligator y point limits X1, a Z12 degree of freedom, the end surface obligator y point limits Y1 this degree of freedom, pletely has limited the cuboid work piece 6 degrees of freedom. C. Clamps the strength two essentia l factors, the direction and the action point cla mp the strength direction to be supposed to face locates the part, and causes to have cla mps the strength to be sma llest. The determination cla mps the point of force concurrence when the position should not destroy the loca lization. Clamps the point of force concurrence the position to be supposed to approach the processing spot as far as possible, by reduces the cutting force to circle cla mps the point of force concurrence the moment of force, prevented the work piece has the rotation or the 3 徐州 工 程 學(xué) 院 畢 業(yè) 設(shè) 計 (論文 )vibration in the processing process. Should guara ntee cla mps the distor tion not to affect the processing precision. Clamps the point of force concurrence number to be supposed to cause the work piece in the entire contact face the stress even, the juxtaposition meta morphose is sma ll. loca lization cla mps the plan the determination ponents belong to the hollow circular casting, the genera l loca lization part has V shape block, locates the sleeve to make the semicircle loca lization, if selects V shape block loca lization, as well as circled X, the Y rotation of axis degree of freedom in the Z axis traverse already eliminates, carried on the processing when the drill bit, circled the Z axis rotation the degree of freedom to be unable to eliminate actually, therefore located with V shape block the plan was inva lid. If the use semicircle loca lization, its result and with V sh