Catia零件设计基础1

1、Part Design FundamentalsDetailed StepsTable of ContentsDetailed Steps Connector Housing3Connector Housing ：Creating the Main Pad and Other Features3Connector Housing (2): Dressingup the Connector7Connector Housing ：ModHyinq the Part12Lever16Building a Lever.16Finishing the Lever2330人一黜 Sketch. 1Deta

2、iled Steps Connector HousingConnector Housing (1): Creating the Main Pad and Other FeaturesExtruding the Main Pad1. Select the connector profile西 Parti一即 plane 一yz plane 一planePartBody2. Using the Pad function, create a 70mm long pad from the connector profileDesigning the Catch1. Create a plane off

3、set 35mm from yz plane2.Sketching on the offset plane, create the above sketch and constraints3. Create a coincidence constraint between the bottom line/pad top and a distance constraint between the vertical line/pad back. Change all dimensions to match4. Exit sketcher, create catch pad1 8mm on each

4、 side of offset plane for a total of 16mm力 Hint: Use Mirrored Extent optionMaking the Detent Pocket1. Create a plane offset 20mm forward of the back face of the main padfi Pat1Lr xji planeI yz planeL zx plane.副=设基Open_body,1Pad.2Open_body.22.Enter sketcher on offset plane, iSL use "Cut Part by

5、Sketch Planep to make sketching possible, viewing from the front, draw profile with constraints for pocketExit sketcher, create 9.5mm long detent pocket using the pocket toolDesigning the Clip2.Sketch the clip in it's rough position3.Create a coincidence constraint between the upper line/pad bot

6、tom and a coincidence constraint between the top right point/offset plane from detent. Create all other constraintsExit sketcher, create 3mm long clip using the pad toolConnector Housing (2): Dressing-up the ConnectorDrafting Surfaces Pad1. Select all perimeter vertical faces (5 faces) and apply a 3

7、deg draft? using the connector bottom as the neutral element2.Apply a 3deg draft to the connector step face using the lower upper face as the neutral elementFilleting Edges1. Create two 1 mm fillets on the upper and lower edges of the upper front face2. Variable fillet (linear) the four corner edges

8、, each with a radius of 1 mm at the top and 2mm at the bottomOpe nobody 2Pocket1Pad.3Draft.1Draft2EdgeFillet.1*蝴唾Shelling the PartPocket1. Shell connector with 1 mm wall thickness, removing the bottom face and the inside three faces of the clip1- - xy planeI - yz plane幸 PadBodyPad.1Open_bodv.1Pad2Pa

9、d.3Draft.1Draft20pen_body,2Peeked一翻 EdgeFillet.1一年 EdgeFillet.2Adding Fillets1. Create 1 mm fillet around top of part2. Hide unnecessary elementsCreating a Hole1. Create a hole, 3.5mm diameter, located 15mm from right edge and 10mm from front edge on the upper faceCreating a Pattern1. Use a rectangu

10、lar pattern to create the second hole, using the first hole as the object and spacing it 40mm from the first hole. Use the front edge for the direction of the patternAdding Standoffs and Reordering1. On the underside of the part, sketch the above profile and constraints for the standoff2. Exit sketc

11、her and create 4mm standoff usinq the pad tool3. Reorder the standoff before the hole in the specification tree so the hole goes through4. Use rectangular pattern to duplicate standoff and reorder it before the holeConnector Housing (3): Modifying the PartEditing Feature Parameters1. Edit the first

12、pad's (Pad.1) width from 35mm to 40mm2. A wider connector is the resultEditing a Sketch1. Edit Pad.4 sketch to include two tangent lines, perpendicular to each other with constraintsEditing Fillets1. Edit fillet radius (EdgeFillet.1) from 1 mm to 1.5mmA larger fillet radius is the resultEditing

13、a Hole Type1. Edit Hole.1 to be a Counterbored Hole type with a diameter of 5mm and a depth of 1.5mm for the counterboreLeverBuilding a LeverIn this exercise, you will build the above lever.2. Load the part.3. Make a pad with the sketcher in the positive OZ direction with an height of 5.圆4. Enter th

14、e sketcher J by selecting the bottom face of the previously created pad.5. Generate the following rough profile with the icon. Do it in one shot.6. Delete all the constraints7. Add the following radial constraint9. Add the following distance constraint12. Add the following parallelism constraint bet

15、ween the two following edges.13. Add the following perpendicularity constraint between the two following edges.14. Exit the sketcher15. Make a pocketwith the following options.16. You are going to make a hole in the part, before activating the hole icon, select the two following edges using the Ctrl

16、 key (the left one in first).回17. Activate the hole icon ILSelect the top face of the part.18. Modify the following pocket parameters and change them to 12 and 15 respectively.19. Enter the following parameters in the dialog box then validate.20. You have the following result. Save it.Finishing the

17、LeverIn this exercise, you will finish the following lever.21. Load a part called CATPDGEXSketch2.CATPart.22. You are going to duplicate the blind hole. To do so, select the hole to be duplicated, then activate the23. Select the Reference direction field (first direction) in the dialog box then sele

18、ct the following edge.Rectangular Pattern icon.Rectangular Pattern DefinitionFirst DirectionSecond DirectionParameters： |nstance($) &： spacing 三I n$tance($: |2 Spacing: 120mm Length: FReference DirectionNo selectionReference element：1Reverse I-Object to Pattern 0 bjectjHole.l口 Keep specification

19、sMore» IQ Appl | O Cancel |24. If necessary, reverse the reference direction by activating the reverse button from the dialog box, then enter the following parameters.25. Select the Second direction tab from the dialog box then activate the Reference element field./ Firsl DirectionI Second Dire

20、ction d-> « 1 ；P列©meH陪 | lnstances Sc Spacing三|Reference DirectionrReference element：! Na selectionReverse IObject to PatternObjec t:|Hole,1 口 Keep specific-ations27.26. Select the following edge for the second direction.If necessary, reverse the reference direction by activating the re

21、verse button from the dialog box, then enter the following parameters.First DirectionSecond DirectionP5rarneters: |此.词口" Spacing 三Instance(s) :|3Spacing; |40rftmLength:|Reference DirectionReference element:Ete'2Reverse IObject to Pattern Objec t|Hole.1 口 Keep specifications28.In order to re

22、move the non necessary instances, select the center of the instances you do not want anymore, then validate.fillet of 40mm radius on the part. So, select the following edge then29. Now, you are going to add a111activate the fillet icon 7.30. Enter a radius of 40 in the dialog box, then validate.31.

23、Now, you are going to add a draft angle on the outside of the part. So, select the following face.32. Activate the Draft icon33. Select the Neutral element selection field in the dialog box.34. Select the bottom face of the part for the neutral element.35. If necessary, reverse the pulling direction

24、 in order to have it in the OZ positive direction.36. Enter an angle of 5 degree in the dialog box then validate. The draft angle is created.37. Now, you are going to make a draft angle on the cylindrical faces of each holes. So, using the Ctrl key, select the six cylindrical faces.38.39.Activate the Draft iconSelect the Neutral element selection field in the dialog box.Angle :5degObject（5）to draft:|5Faces Selection by neutral faceNeutral ElementSelection