建模練習(xí)軸承座

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1、 說明建立軸承座的1/2對稱實體模型。以p-block.db 文件名保存數(shù)據(jù)庫文件Counterbore1.0R, 0.1875 deep Base6 x 3 x 1Web, 0.15 thick All dimensions in inches 1.75Four 0.75D holes,0.75 offsetfrom corner Bushing, 0.85R Bracket1.5R, 0.75 thick 1.按教師指定的工作目錄，用“p-block”作為作業(yè)名， 進入 ANSYS2.打開等軸視圖方位:按ISO或用命令:/VIEW,1,1,1,13.創(chuàng)建軸承座的基礎(chǔ) : Main Menu

2、 Preprocessor Modeling Create Volumes Block By Dimensions輸入 X1 = 0, X2 = 3, Y1 = 0, Y2 = 1, Z1 = 0, Z2 = 3,然后按OK或用命令:/PREP7 BLOCK,0,3,0,1,0,3 4.將工作平面移到 X=2.25, Y=1.25, Z=.75: Utility Menu WorkPlane Offset WP by Increments 設(shè)置 X,Y,Z Offsets = 2.25, 1.25, 0.75設(shè)置XY, YZ, ZX Angles = 0, -90, 0, 然后按 OK或用命令

3、:WPOFF, 2.25, 1.25, 0.75WPROT, 0, -90, 0 5.創(chuàng)建直徑為0.75 英寸深度為-1.5 英寸的圓柱 : Main Menu Preprocessor Modeling Create Volumes Cylinder Solid Cylinder輸入Radius = 0.75/2輸入Depth = -1.5, 然后按 OK或用命令: CYL4, , ,0.75/2, , , ,-1.56.將圓柱考貝到DZ=1.5的新位置 : Main Menu Preprocessor Modeling Copy Volumes +拾取柱體 (體號 2),按 OK DZ =

4、 1.5, 按 OK或用命令: VGEN,2,2, , , , ,1.5, ,0 7.從軸承座基礎(chǔ)中挖出兩個圓孔: Main Menu Preprocessor Modeling Operate Booleans Subtract Volumes拾取軸承座基礎(chǔ)的體 (體 1), 按 OK拾取兩個圓柱體 (體 2 和體3), 然后按 OK或用命令:VSBV, 1, ALL 8.在整體坐標(biāo)系中改變工作平面的相對位置: Utility Menu WorkPlane Align WP with Global Cartesian或用命令:WPCSYS,-1,0VPLOT9.創(chuàng)建套筒托架的基礎(chǔ): Main

5、 Menu Preprocessor Modeling Create Volumes Block By 2 Corners & Z WP X = 0 WP Y = 1 Width = 1.5 Height = 1.75 Depth = 0.75, then OK或用命令:BLC4,0,1,1.5,1.75,0.7510.將工作平面移到套筒托架的正面: Utility Menu WorkPlane Offset WP to Keypoints +拾取正面左角頂部的關(guān)鍵點,按 OK或用命令:KWPAVE, 16 11.創(chuàng)建套筒托架的拱: Main Menu Preprocessor Modelin

6、g Create Volumes Cylinder Partial Cylinder輸入WP X = 0輸入WP Y = 0輸入Rad-1 = 0輸入Theta-1 = 0輸入Rad-2 = 1.5輸入Theta-2 = 90輸入Depth = -0.75, 然后按 OK或用命令:CYL4,0,0,0,0,1.5,90,-0.75 12.通過套筒托架的孔創(chuàng)建圓柱: Main Menu Preprocessor Modeling Create Volumes Cylinder Solid Cylinder WP X = 0 WP Y = 0 Radius = 1 Depth = -0.1875,

7、然后按 Apply WP X = 0 WP Y = 0 Radius = 0.85 Depth = -2, 然后按 OK或執(zhí)行:CYL4,0,0,1, , , ,-0.1875CYL4,0,0,0.85, , , ,-2 Counterbore Through hole 13.挖掉兩個圓柱，形成軸承座和套筒的孔: Main Menu Preprocessor Modeling Operate Booleans Subtract Volumes拾取兩個形成套筒托架拱和基礎(chǔ)的體按Apply拾取軸承座柱按Apply拾取同樣的兩個基礎(chǔ)的體按Apply拾取通過孔的圓柱按OK14.合并相同的關(guān)鍵點: Ma

8、in Menu Preprocessor Numbering Ctrls Merge Items設(shè)置標(biāo)號 “Keypoints”,然后按 OK或用命令:NUMMRG,KP Arch and Base of Bushing Bracket 15.創(chuàng)建腹板:15a. 在基礎(chǔ)正面頂邊的中間建立一個關(guān)鍵點: Main Menu Preprocessor Modeling Create Keypoints KP between KPs在基礎(chǔ)上拾取兩個位于正上方拐角處的關(guān)鍵點，按 OK RATI = 0.5, 然后按OK或用命令:KBETW,7,8,0,RATI,0.5 1st Keypoint1st K

9、eypoint2st Keypoint 15b.創(chuàng)建三角形面: Main Menu Preprocessor Modeling Create Areas Arbitrary Through KPs在軸承座基礎(chǔ)和套筒托架基礎(chǔ)相交的位置，拾取第一個關(guān)鍵點 X=1.5在拱表面底部和套筒托架基礎(chǔ)相交的位置，拾取第二個關(guān)鍵點 X=1.5拾取在14a步驟中建立的位于X=1.5, Y=1, Z=3的第三個關(guān)鍵點按Ok或用命令:A,14,15,9 1st Keypoint3rd Keypoint2nd Keypoint 15c.沿面的法線方向拉伸面: Main Menu Preprocessor Modeli

10、ng Operate Extrude Areas Along Normal拾取在步驟14b中建立的三角形面,按 OK輸入DIST = -0.15, 然后按OK或用命令:VOFFST,3,-0.15 16.組合體: Main Menu Preprocessor Modeling Operate Booleans Glue Volumes拾取Pick All或用命令:VGLUE,ALL17.打開體號的顯示開關(guān)，畫體: Utility Menu PlotCtrls Numbering 設(shè)置 Volume numbers選項為 on, 按 OK或用命令:/PNUM,VOLU,1VPLOT18.保存數(shù)據(jù)

11、庫，退出 ANSYS: Pick the “SAVE_DB” button in the Toolbar Pick the “QUIT” button in the Toolbar選擇 “Quit - No Save!”按OK 或用命令:FINISH/EXIT,ALL 實體建模: 由下而上 說明用由下而上建模技術(shù)，建立連桿幾何模型。 6.52.5 0.5 1.8 0.3 1.0R 1.4R 0.4R0.7R45oSpline through six control points CLCLCrank pin end Wrist pin end All dimensions in inches 4

12、5o 0.280.4 0.33 4.754.03.25 1.按教師指定的工作目錄，用“c-rod” 作為作業(yè)名，進入ANSYS。2.創(chuàng)建兩個圓形面: Main Menu Preprocessor Modeling Create Areas Circle By Dimensions輸入RAD1 = 1.4輸入RAD2 = 1輸入THETA1 = 0輸入THETA2 = 180, 然后選擇Apply輸入THETA1 = 45, 然后選擇OK或用命令:/PREP7PCIRC,1.4,1,0,180 PCIRC,1.4,1,45,1803.打開 面號: Utility Menu PlotCtrls N

13、umbering .設(shè)置面號為 “on”, 然后選擇OK或用命令:/PNUM,AREA,1APLOT 4.創(chuàng)建兩個矩形面: Main Menu Preprocessor Modeling Create Areas Rectangle By Dimensions輸入X1 = -0.3, X2 = 0.3, Y1 = 1.2, Y2 = 1.8, 然后選擇Apply輸入X1 = -1.8, X2 = -1.2, Y1 = 0, Y2 = 0.3, 然后選擇OK或用命令:RECTNG,-0.3,0.3,1.2,1.8RECTNG,-1.8,-1.2,0,0.35.平移工作面位置(X=6.5): Ut

14、ility Menu WorkPlane Offset WP to XYZ Locations +回車后在輸入窗口輸入 6.5 ， OK或用命令: Or issue:WPAVE,6.5 6.再創(chuàng)建兩個圓形面: Main Menu Preprocessor Modeling Create Areas Circle By Dimensions輸入RAD1 = 0.7輸入RAD2 = 0.4輸入THETA1 = 0輸入THETA2 = 180, 然后選擇Apply輸入THETA2 = 135, 然后選擇OK或用命令:PCIRC,0.7,0.4,0,180 PCIRC,0.7,0.4,0,135 7.

15、在每一組面上分別進行布爾操作: Main Menu Preprocessor Modeling Operate Booleans Overlap Areas先選擇左邊的一組面, 然后選擇Apply再選擇右邊的一組面, 然后選擇OK或用命令:AOVLAP,1,2,3,4AOVLAP,5,6 8.定義四個新的關(guān)鍵點: Main Menu Preprocessor Modeling Create Keypoints In Active CS第一關(guān)鍵點, X=2.5, Y=0.5, 然后選擇Apply第二關(guān)鍵點, X=3.25, Y=0.4, 然后選擇Apply第三關(guān)鍵點, X=4, Y=0.33,

16、然后選擇Apply第四關(guān)鍵點, X=4.75, Y=0.28, 然后選擇OK或用命令:K, ,2.5,0.5K, ,3.25,0.4K, ,4.0,0.33K, ,4.75,0.289.激活整體柱坐標(biāo)系: Utility Menu WorkPlane Change Active CS to Global Cylindrical或用命令:CSYS,1 10.創(chuàng)建一條線（由一系列關(guān)鍵點擬合一條樣條曲線）: Main Menu Preprocessor Modeling Create Lines Splines With Options Spline thru KPs順序拾取如圖形窗口所示的六個關(guān)鍵

17、點, 然后選擇OK 1st kp 6th kp3rd kp 5th kp2nd kp 4th kp 10. (續(xù)): 輸入XV1 = 1 (總體柱坐標(biāo)系，關(guān)鍵點 1 處的半徑) YV1 = 135 (總體柱坐標(biāo)系，關(guān)鍵點 1 處的角度) XV6 = 1 (總體柱坐標(biāo)系，關(guān)鍵點 6 處的半徑) YV6 = 45 (總體柱坐標(biāo)系，關(guān)鍵點 6 處的角度)按OK或用命令:BSPLIN,5,6,7,21,24,22,1,135,1,45 11.通過關(guān)鍵點1和18創(chuàng)建一條直線 : Main Menu Preprocessor Modeling Create Lines Lines Straight Lin

18、e拾取圖形窗口所示的兩個關(guān)鍵點, 然后選擇OK或用命令:LSTR, 1, 18 1st kp 2nd kp 12.打開線號，顯示線: Utility Menu PlotCtrls Numbering .設(shè)置 Line numbers為 “on”, 然后選擇OK Utility Menu Plot Lines或用命令:/PNUM,LINE,1LPLOT13.以6號、1號、7號、25號線為邊界創(chuàng)建一個新面: Main Menu Preprocessor Modeling Create Areas Arbitrary By Lines拾取四條線 (6, 1, 7, 和 25), 然后選擇OK或用命令

19、:AL, 6, 1, 7, 25 14.放大連桿左邊部分: Use the Zoom Model Icon in the Model Control Toolbar 15.創(chuàng)建線與線的倒角: Main Menu Preprocessor Modeling Create Lines Line Fillet拾取線 36 和 40, 然后選擇Apply輸入RAD = .25, 然后選擇Apply拾取線 40和 31, 然后選擇Apply按Apply拾取線 30和 39, 然后選擇OK按OK Utility Menu Plot Lines或用命令:LFILLT,36,40,0.25LFILLT,40,

20、31,0.25LFILLT,30,39,0.25 LPLOT 16.以倒角線為邊界，創(chuàng)建新面: Main Menu Preprocessor Modeling Create Areas Arbitrary By Lines拾取線 12, 10, 和 13, 然后選擇Apply拾取線 17, 15, 和19, 然后選擇Apply拾取線 23, 21, 和24, 然后選擇OK Utility Menu Plot Areas或用命令:AL, 12, 10, 13AL, 17, 15, 19AL, 23, 21, 24APLOT 17.把所有的面加起來: Main Menu Preprocessor

21、Modeling Operate Booleans Add Areas拾取Pick All或用命令:AADD,ALL18.選擇Fit 使整個模型充滿圖形窗口: Utility Menu PlotCtrls Pan, Zoom, Rotate 按Fit19.關(guān)閉線號和面號: Utility Menu PlotCtrls Numbering . 設(shè)置線號和面號為“ off ”, 然后選擇OK Utility Menu Plot Areas或用命令:/PNUM,LINE,0/PNUM,AREA,0APLOT 20.激活整體直角坐標(biāo)系: Utility Menu WorkPlane Change Ac

22、tive CS to Global Cartesian或用命令:CSYS,021.以X-Z 平面 (在 Y 方向) 為對稱面，對面作鏡面反射: Main Menu Preprocessor Modeling Reflect Areas Pick All Select X-Z plane, then OK或用命令:ARSYM,Y,13 22.把所有的面加起來: Main Menu Preprocessor Modeling Operate Booleans Add Areas Pick All或用命令:AADD,ALL23.關(guān)閉工作平面: Utility Menu WorkPlane Display Working Plane或用命令:WPSTYLE Use Fit View Icon 24.存儲數(shù)據(jù)庫，退出 ANSYS:在工具條中拾取 “SAVE_DB”在工具條中拾取 “QUIT”選擇 “Quit - No Save!”按OK或用命令:SAVEFINISH/EXIT,NOSAVE