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ENGR-22_Lec-27_SurfaceModel-2.ppt 1 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Bruce Mayer, PE Licensed Electrical.

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1 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 1 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Bruce Mayer, PE Licensed Electrical & Mechanical Engineer BMayer@ChabotCollege.edu Engineering 22 Surface Modeling - 2

2 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 2 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Learning Goals  Use AutoCAD Built-In Commands to make “Primitive” 3D Surface-Shapes Box, Sphere, Cone, Pyramid, others  Draw Surface of Revolution using a Shape & Axis  Connect two Shapes with Straight Lines to Make “Ruled” Surfaces  Build Complex 3D Shapes by Adding & Subtracting Primitives

3 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 3 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Recall - Invoke Surface-Shapes Surfaces ToolBar  Or Command Line ai_XXX –XXX = box, wedge, pyramid, cone, etc.

4 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 4 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-4 → Connected Boxes  Game Plan Use Surface-Box & WCS to Make Box-a Move UCS to Top of Box-a, and Build Box-b Use 3D-Orbit Command to obtain better 3D view Move UCS in TWO steps to “front” of Box-b

5 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 5 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-4 Game Plan Use Xline and Offset to move-down the UCS on “front” of Box-b Draw Box-c using the Surface-Box Command Use 3D-Orbit to obtain the Final “Tilted” view similar to that shown in TextBook

6 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 6 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-4 Final Result

7 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 7 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-16

8 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 8 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-16 Game Plan  In WCS Draw Arched Base using Rect, Arc, Circle  Explode Rect  Use Properties Menu to Change thickness to 13  Move UCS to “Lower Rt” corner of Arched Base  Use “new” UCS command with “3Point” Option to reorient Z-Axis  Set Thickness to 13  Draw Vertical Box  Locate Circle Center with Xlines  Draw Ø16 Circle

9 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 9 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-16 – Final Result

10 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 10 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-22  Game Plan Draw Front Form in WCS with Thickness = 40 Move UCS and Draw Ø24 Peg with Thickness = 18

11 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 11 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-22 Game Plane Move and Rotate UCS to Draw Ø40 SemiCircular Pedestal with Thickness of 8 Move UCS to To “Top-Ctr” of Ø40 Pedestal Draw SemiCircular Prism with Thickness of 40

12 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 12 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-22 Final Result  Hide OFF  Hide ON

13 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 13 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics All Done for Today Surface Model in 3D

14 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 14 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Bruce Mayer, PE Licensed Electrical & Mechanical Engineer BMayer@ChabotCollege.edu Engr/Math/Physics 25 Appendix 

15 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 15 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-4.1 Command: _ai_box Initializing... 3D Objects loaded. Specify corner point of box: Specify length of box: 6 Specify width of box or [Cube]: 5 Specify height of box: 2 Specify rotation angle of box about the Z axis or [Reference]: Command: Command: _-view Enter an option [?/Categorize/lAyer state/Orthographic/Delete/Resto re/Save/Ucs/Window]: _swiso  Make Blue Obj Layer  Box in WCS

16 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 16 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-4.2 Command: ucs Current ucs name: *WORLD* Enter an option [New/Move/orthoGraphic/Prev/Restore/Sa ve/Del/Apply/?/World] : m Specify new origin point or [Zdepth] : Command: _ai_box Specify corner point of box: Specify length of box: 4 Specify width of box or [Cube]: c Specify rotation angle of box about the Z axis or [Reference]: Command: _vpoint *** Switching to the WCS *** Current view direction: VIEWDIR=- 1.0000,-1.0000,1.0000 Specify a view point or [Rotate] :  Move UCS with Mouse & OSnap;  Make New Box as cube

17 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 17 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-4.3  Move Up & Over with Mouse & OSnap  Move w/ Zdepth Command: ucs Current ucs name: *NO NAME* Enter an option [New/Move/orthoGraphic/Prev/Restore/Save/Del/Apply/?/World] : m Specify new origin point or [Zdepth] : Command: ucs Current ucs name: *NO NAME* Enter an option [New/Move/orthoGraphic/Prev/Restore/Save/Del/Apply/?/World] : m Specify new origin point or [Zdepth] : z Specify Zdepth : -1

18 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 18 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-4.4 Command: ai_box Specify corner point of box: Specify length of box: 5 Specify width of box or [Cube]: 2 Specify height of box: 1 Specify rotation angle of box about the Z axis or [Reference]: Command: '_3dorbit Press ESC or ENTER to exit, or right-click to display shortcut-menu. Regenerating model. Command: ucs Current ucs name: *NO NAME* Enter an option [New/Move/orthoGraphic/Prev/Restor e/Save/Del/Apply/?/World] : m Specify new origin point or [Zdepth] :  Make Last Box  Rotate View with 3D Orbit

19 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 19 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-16.1  Make the Base in WCS  Need to Explode Rect and Remove line thru Circle Command: rectangle Specify first corner point or [Chamfer/Elevation/Fillet/Thickness/Width]: Specify other corner point or [Area/Dimensions/Rotation]: @35,30 Command: _arc Specify start point of arc or [Center]: Specify second point of arc or [Center/End]: _c Specify center point of arc: mid of Specify end point of arc or [Angle/chord Length]: Command: c CIRCLE Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: mid of Specify radius of circle or [Diameter]: d Specify diameter of circle: 13 Command: _-view Enter an option [?/Categorize/lAyer state/Orthographic/Delete/Restore/Save/Ucs/Window]: _seiso Regenerating model. Command:

20 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 20 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-16.2 Command: explode Select objects: 1 found Select objects: Command: e ERASE Select objects: 1 found Select objects: Command: Command: _propertiesCommand:

21 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 21 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-16.3  Move UCS With Mouse-Pick Command:  Rotate UCS Axes with NEW 3Point Option

22 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 22 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-16.4 Command: ucs Current ucs name: *WORLD* Enter an option [New/Move/orthoGraphic/Prev/Restore/Save/Del/Apply/?/World] : m Specify new origin point or [Zdepth] : Command: ucs Current ucs name: *NO NAME* Enter an option [New/Move/orthoGraphic/Prev/Restore/Save/Del/Apply/?/World] : n Specify origin of new UCS or [ZAxis/3point/OBject/Face/View/X/Y/Z] : 3point Specify new origin point : Specify point on positive portion of X-axis : nea to Specify point on positive-Y portion of the UCS XY plane : Command: Specify opposite corner: *Cancel*

23 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 23 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-16.5  Set Thickness to 13  Draw Side-Box using Xline and Line Command: thickness Enter new value for THICKNESS : 13 Command: xl XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: Specify through point: Command: XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: Specify through point: nea to Specify through point: Command: XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: o Specify offset distance or [Through] : 37

24 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 24 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-16.6  Set Thickness to 13  Draw Side-Box using Xline and Line Select a line object: Specify side to offset: Select a line object: Specify side to offset: *Cancel* Command: XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: o Specify offset distance or [Through] : 30 Select a line object: Specify side to offset: Select a line object: Command: l LINE Specify first point: Specify next point or [Undo]: Specify next point or [Close/Undo]: Specify next point or [Close/Undo]: *Cancel*

25 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 25 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-16.7  Locate Circle Ctr with XLines  Draw Circle Command: xl XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: o Specify offset distance or [Through] : 12 Select a line object: Specify side to offset: Select a line object: Specify side to offset: *Cancel* Command: xl XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: o Specify offset distance or [Through] : 15 Select a line object: Specify side to offset: Select a line object: *Cancel* Command: c CIRCLE Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: Specify radius of circle or [Diameter] : d Specify diameter of circle : 16

26 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 26 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-16.8 – Final Result

27 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 27 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-22.1  Base Form in WCS Xline Line Circle & Arc Command: limits Reset Model space limits: Specify lower left corner or [ON/OFF] : Specify upper right corner : 297,210 Command: '_layer Command: xl XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: Specify through point: Command: XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: Specify through point:

28 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 28 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-22.2 Command: XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: o Specify offset distance or [Through] : 70 Select a line object: Specify side to offset: Select a line object: Command: XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: o Specify offset distance or [Through] : 60 Select a line object: Specify side to offset: Select a line object: Specify side to offset: Command: XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: o Specify offset distance or [Through] : 35 Select a line object: Specify side to offset: Select a line object: Specify side to offset: Select a line object:

29 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 29 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-22.3 Command: xl XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: o Specify offset distance or [Through] : 10 Select a line object: Specify side to offset: Select a line object: *Cancel* Command: l LINE Specify first point: Specify next point or [Undo]: Specify next point or [Close/Undo]: Specify next point or [Close/Undo]: *Cancel* Command: l LINE Specify first point: Specify next point or [Undo]: Specify next point or [Close/Undo]:

30 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 30 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-22.4 Command: c CIRCLE Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: Specify radius of circle or [Diameter]: d Specify diameter of circle: 10 Command: arc Specify start point of arc or [Center]: Specify second point of arc or [Center/End]: Specify end point of arc: Command:

31 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 31 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-22.5 Command: _-view Enter an option [?/Categorize/lAyer state/Orthographic/Delete/Restore/Save/Ucs/Window]: _swiso Regenerating model. Command: tr TRIM View is not plan to UCS. Command results may not be obvious. Current settings: Projection=UCS, Edge=None Select cutting edges... Select objects or : 1 found Select objects: Select object to trim or shift-select to extend or [Fence/Crossing/Project/Edge/eRase/Undo]: Select object to trim or shift-select to extend or [Fence/Crossing/Project/Edge/eRase/Undo]: *Cancel* Command: Command: Specify opposite corner: Command: Command: _propertiesCommand

32 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 32 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-22.6  Draw Ø24 Knob Xline Thickness = -18 Circle Command: xl XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: cen of Specify through point: mid of Specify through point: Command: xl XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: o Specify offset distance or [Through] : 30 Select a line object: Specify side to offset: Select a line object: *Cancel* Command: Thickness Enter new value for THICKNESS : -18 Command: c CIRCLE Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: Specify radius of circle or [Diameter] : d Specify diameter of circle : 24

33 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 33 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-22.7  3D Orbit to Obtain Good View  Move UCS to make SemiCirc Prisms Command: ucs Current ucs name: *WORLD* Enter an option [New/Move/orthoGraphic/Prev/Restore/Sav e/Del/Apply/?/World] : n Specify origin of new UCS or [ZAxis/3point/OBject/Face/View/X/Y/Z] : x Specify rotation angle about X axis : -90 Command: UCS Current ucs name: *NO NAME* Enter an option [New/Move/orthoGraphic/Prev/Restore/Sav e/Del/Apply/?/World] : m Specify new origin point or [Zdepth] : mid of Command:

34 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 34 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-22.8  Make Pedestal Base with Circle, Thickness = 8, Arc Command: thickness Enter new value for THICKNESS : 0 Command: c CIRCLE Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: mid of Specify radius of circle or [Diameter] : d Specify diameter of circle : 40 Command: xl XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: Specify through point: Command: thickness Enter new value for THICKNESS : 8 Command: arc Specify start point of arc or [Center]: Specify second point of arc or [Center/End]: c Specify center point of arc: mid of Specify end point of arc or [Angle/chord Length]: Command: *Cancel*

35 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 35 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-22.9  Make SemiCirc Prism Move UCS Thickness = 40 Circle & Arc Command: ucs Current ucs name: *NO NAME* Enter an option [New/Move/orthoGraphic/Prev/Restore/Sav e/Del/Apply/?/World] : m Specify new origin point or [Zdepth] : mid of Command: c CIRCLE Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: mid of Specify radius of circle or [Diameter] : d Specify diameter of circle : 28 Command: Thickness Enter new value for THICKNESS : 40

36 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 36 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX15-22.10  Make SemiCirc Prism Move UCS Thickness = 40 Circle & Arc Command: arc Specify start point of arc or [Center]: Specify second point of arc or [Center/End]: c Specify center point of arc: mid of Specify end point of arc or [Angle/chord Length]: Command: ARC Specify start point of arc or [Center]: Specify end point of arc: *Cancel* Enter new value for THICKNESS : 0 Command: l LINE Specify first point: Specify next point or [Undo]:

37 BMayer@ChabotCollege.edu ENGR-22_Lec-27_SurfaceModel-2.ppt 37 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics

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