创成式外形设计、曲面优化、展开外形及BiW模板

1、En teri ng the Gen erative Shape Desig n Select ar object cr a command 狹予申0傀电鸟田民艮圉同苔莒珂 Workbe nch J. Parti -bXY plane plane 匸17 工乂 plane -Parffiody J 彩 Geo metric：削合,1 This first task shows you how to en ter the Gen erative Shape Desig n workbe nch and ope n a wireframe desig n part. 宰 Before starti

2、 ng this sce nario, you should be familiar with the basic comma nds Guide. The Shape Desig n workbe nch is displayed. com mon to all workbe nches. These are described in the In frastructure Users from the Start menu. 1. Select Shape - Gen erative Shape Desig n 囤匸Allt V5 - Parti 口 5tart ENOVIA V5 Fil

3、e Edit 軸 Insert Look Window Help 二 :二二 +jEAflDW/X The New Part name dialog box may appear depending on the way you customized your sessi on .It provides a field for en teri ng the name you wish to assign to the part, an option that enables hybrid design an two other options to insert a geometrical s

4、et and/or an ordered geometrical set in the part to be created. If you selectEnable hybrid design, the capability then applies to all the bodies you will create in your CATIA sessi on (and n ot only to the new CATPart document you are opening). Consequently, if your sessi on contains CATPart docume

5、nts already in cludi ng traditi onal bodies, the new bodies you will create subseque ntly in these docume nts will possibly in clude wireframe and surface eleme nts. To facilitate your desig n. It is therefore recomme nded that you do not cha nge this sett ing dur ing your sessi on. For more informa

6、tion, refer to the Part Document chapter in docume ntati on. Customiz ing secti on of thePart Desig n Hew Part Enter part |partl )Enable hybrid design Crwte a gecnnetricdl set I Cr 0 w Cancel mw J 4. Click OK to create the multi-sections surface. 5. Click the Offset iconE. 6. Select the multi-secti

7、ons surface. 7. En ter an offset value of 2mm. The offset surface is displayed normal to the multi-sections surface. 8. Click OK to create the offset surface. 9. Click theIn tersectio n icon The In tersecti on dialog box appears. 10. Select the offset surface then the first plane (Plane.2) to create

8、 the in tersectio n betwee n these two eleme nts. Intersection Definition ?| Fir比 Element:ofFteLl Extend lirear supports For intersection Second Element: |Phne,2 I-! Extend lirear supports For intersection Curves intersection Wh Cocnnnon Are Result;丄 Curve O Poirits Surface-Part Inters / Carir.-jr O

9、 別曲ue Extrapolatior optiorB I Extrapolate intersection ori first elefnent ll Intersect rion :o口lanar line Eeqrrrents OK I J Cancel Preview n, - 3 - - I 11. Click OK in the dialog box. The created eleme nts are added to the specificati on tree: 12. -爲 *璽 Multi-sections Surface, 1 Offet 1 Intersect, 3

10、 Splitti ng, Lofting and Filleti ng This task shows how to split surfaces the n create a multi-secti ons surface and two fillets. 1. Click the Split icon The Split Definition dialog box appears. 2. Select the offset surface by click ing on the porti on that you want to keep after the split. 3. Selec

11、t the first plane (Plane.2) as cutting element. 4. Click OK to split the surface. 0 5. Repeat the previous operati ons by select ing the multi-secti ons surface the n the sec ond pla ne (Pla ne.3) to defi ne the in tersecti on first, the n to cut the surface. 6. Click OK to split the surface. ico n

12、7. Click theMulti-sectio ns Surface The Multi-secti ons Surface Defin iti on dialog box appears. 8. Select the in tersecti on edges of the two split surfaces as secti ons. Multi-sections Surface Definition Mo | Section| Tangent Closing Paint | 1 5plit.4Edge. 1 2 Intersect, 3 Guides Spine | Coupling

13、| Relimitab jj 卜 No Guide i Tangent Smooth parameters ll Angular Corredtion ; Deviation : pobirnm OK I d 匚anel Preview 9. Click OK to create the multi-sections surface between the two split surfaces. 10. Click the Shape Fillet icon The Fillet Definition dialog box appears. 11. Select the first split

14、 surface as the first support element (Split.3). 12. Select the multi-sections surface you just created as the second support eleme nt (Multi-secti ons Surface.3). 13. Enter a fillet radius of 3mm. The orie ntati ons of the surfaces are show n by means of arrows. 14. Make sure that the surface orien

15、tations are correct (arrows pointing dow n) the n click OK to create the first fillet surface. 15. Repeat the filleting operation, clicking the icon, then selecting the sec ond split surface as the first support eleme nt. 16. Select the previously created filleted surface as the second support eleme

16、 nt. 17. Enter a fillet radius of 3mm. 18. Make sure that the surface orientations are correct (arrows pointing up) the n clickOK to create the sec ond filleted surface. The created eleme nts are added to the specificati on tree: GEometn匚al 2已匸2 Multi-sections Surface. 1 JJ K 牛篇 Oflfcet. 1 -Intersec

17、t. 3 -渺 Split.3 黄？ Spllt.4 -Multi-sections Surface,2 iFtetl Fiet. 2 Sweep ing and Filleti ng 牛_ This task shows how to create swept surfaces and fillets on both sides of the part. You will use the profile element on the side of the part for this. In this task you will also create a symmetrical profi

18、le element on the opposite side of the part. 1. Click the Swept Surface icon The Swept Surface Defin iti on dialog box appears. 2. Click the Explicit sweep icon. 3. Select the profile eleme nt (Cor ner.1). 4. Select the guide curve (Guide.1). 6. Click OK to create the swept surface. 5. Select the ce

19、n tral curve (Spli ne.1) as the spine. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. Click the Symmetry ico n The Symmetry Defin iti on dialog box appears. Select the profile eleme nt to be tran sformed by symmetry. Select the YZ pla ne as refere nee eleme nt. Click OK to create the symmetrical profi

20、le element. Click the Sweep ico n Select the profile (Symmetry.3) and the guide curve (Guide.2). Select the cen tral curve (Spli ne.1) as the spine. Click OK to create the swept surface. To create a fillet between the side portion and the central part click the Shape Fillet Select the side sweep ele

21、me nt and the cen tral porti on of the part, the n en ter a fillet radius of 1mm (make sure the arrows are pointing up). Click Preview to preview the fillet, thenOK to create it. Repeat the filleting operation between the other sweep element and the central portion of the part, and entering a fillet

22、 radius of 1mm (make sure the arrows are pointing up). 19. Click OK to create the fillet. The created eleme nts are added to the specificati on tree: Multi-sections Surface, 1 I ki： Offset. 1 上 Ys Intersect.3 -5plit,3 Split 4 Multi-sections Surface,2 ：f=illet.l -;Fillet. 2 -Sweep.l Symfnetry.3 Sweep

23、 刖比3 Fillet. 4 20. Using the Historical Graph This task shows how to use the Historical Graphs comma nds and con textualcomma nds. Open any .CATPart docume nt. 1. Select the element for which you want to display the historical graph. 2. Click the Show Historical Graph The Historical Graph dialog box

24、 appears. Point. 2*. Port 11 * Historical Graph O Intersect. 1 r yz plane In this case, you can exam ine the history of eve nts that led to the con structi on of the Multi-secti ons surface.1 eleme nt. Each branch of the graph can be expa nded or collapsed depe nding on the level of detail required.

25、 The followi ng icon comma nds are available: Add Graph Adds a selected eleme nt to the graph Remove Graph Reframe Surface or Part graph represe ntati on Parameters I I. Constraints Removes a selected eleme nt from the graph Cen ters the graph in the window Gives a horiz on tal or vertical represe n

26、tati on Displays any parameters associated with the eleme nts in the graph Displays any con stra ints associated with the eleme nts in the graph 3.Right-click any where in the historical graph to display the con textual menu: Hide/ShQv/ Ptopeities Refgraph Print Mini建 graph Al en Graph Refresh Expan

27、d All Properties Reframe graph Displays the properties of an eleme nt Cen ters the graph in the win dow Pri nt whole Allows you to obta in a print of the graph Graph All Displays the whole graph of the part (as well as the roots and their first pare nts) Clean Graph Refresh C lears the graph from th

28、e wi ndow Refreshes the graph display Hide/Show Hides or shows an eleme nt Displays the pare nts of the eleme nts in the graph (but not Expa nd All the roots) Select ing and right-click ing an eleme nt en ables the user to add the children to the selected element. 4. 1. Click the Affinity icon Tran sformi ng the Part This task shows you how to modify the part by applying an affinity operation. The Affin ity Defin iti on dialog box appears. Ele