[email protected] engr-22_lec-27_surfacemodel-2.ppt 1 bruce mayer, pe engineering 22 –...

[email protected] • ENGR-22_Lec-27_SurfaceModel-2.ppt1

Bruce Mayer, PE Engineering 22 – Engineering Design Graphics

Bruce Mayer, PELicensed Electrical & Mechanical Engineer

[email protected]

Engineering 22

SurfaceSurfaceModeling Modeling

- 2- 2



Learning GoalsLearning 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



Recall - Invoke Surface-ShapesRecall - Invoke Surface-Shapes

SurfacesToolBar

Or Command Line• ai_XXX

– XXX = box, wedge, pyramid, cone, etc.



EX15-4 → Connected BoxesEX15-4 → 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



EX15-4 Game Plan 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



EX15-4 Final ResultEX15-4 Final Result



EX15-16EX15-16



EX15-16 Game PlanEX15-16 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



EX15-16 – Final ResultEX15-16 – Final Result



EX15-22EX15-22 Game Plan

• Draw Front Form in WCS with Thickness = 40

• Move UCS and Draw Ø24 Peg with Thickness = 18



EX15-22 Game PlaneEX15-22 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



EX15-22 Final ResultEX15-22 Final Result

Hide OFF Hide ON



All Done for TodayAll Done for Today

SurfaceModelin 3D



Bruce Mayer, PELicensed Electrical & Mechanical Engineer

[email protected]

Engr/Math/Physics 25

AppendiAppendixx

6972 23 xxxxf



EX15-4.1EX15-4.1Command: _ai_boxInitializing... 3D Objects loaded.Specify corner point of box: <Snap on>Specify length of box: 6Specify width of box or [Cube]: 5Specify height of box: 2Specify rotation angle of box about the Z axis or [Reference]:

Command:Command: _-view Enter an option [?/Categorize/lAyer state/Orthographic/Delete/Restore/Save/Ucs/Window]: _swiso

Make Blue Obj Layer

Box in WCS



EX15-4.2EX15-4.2 Command: ucsCurrent ucs name: *WORLD*Enter an option [New/Move/orthoGraphic/Prev/Restore/Save/Del/Apply/?/World] <World>: m

Specify new origin point or [Zdepth]<0,0,0>:

Command: _ai_boxSpecify corner point of box:Specify length of box: 4Specify width of box or [Cube]: cSpecify rotation angle of box about the Z axis or [Reference]:

Command: _vpoint*** Switching to the WCS ***Current view direction: VIEWDIR=-1.0000,-1.0000,1.0000Specify a view point or [Rotate] <display compass and tripod>:

Move UCS with Mouse & OSnap;

Make New Box as cube



EX15-4.3EX15-4.3

Move Up & Over with Mouse & OSnap Move w/ Zdepth

Command: ucsCurrent ucs name: *NO NAME*Enter an option [New/Move/orthoGraphic/Prev/Restore/Save/Del/Apply/?/World] <World>: mSpecify new origin point or [Zdepth]<0,0,0>:

Command: ucsCurrent ucs name: *NO NAME*Enter an option [New/Move/orthoGraphic/Prev/Restore/Save/Del/Apply/?/World] <World>: mSpecify new origin point or [Zdepth]<0,0,0>: zSpecify Zdepth<0>: -1



EX15-4.4EX15-4.4 Command: ai_boxSpecify corner point of box:Specify length of box: 5Specify width of box or [Cube]: 2Specify height of box: 1Specify 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: ucsCurrent ucs name: *NO NAME*Enter an option [New/Move/orthoGraphic/Prev/Restore/Save/Del/Apply/?/World] <World>: mSpecify new origin point or [Zdepth]<0,0,0>:

Make Last Box Rotate View with 3D

Orbit



EX15-16.1EX15-16.1

Make the Base in WCS

Need to Explode Rect and Remove line thru Circle

Command: rectangleSpecify first corner point or [Chamfer/Elevation/Fillet/Thickness/Width]: <Snap on>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: midofSpecify end point of arc or [Angle/chord Length]:

Command: cCIRCLE Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: midofSpecify radius of circle or [Diameter]: dSpecify diameter of circle: 13

Command: _-view Enter an option [?/Categorize/lAyer state/Orthographic/Delete/Restore/Save/Ucs/Window]: _seiso Regenerating model.Command:



EX15-16.2EX15-16.2

Command: explodeSelect objects: 1 foundSelect objects:

Command: eERASESelect objects: 1 foundSelect objects:

Command: <Snap off>Command:Command:Command:Command:Command:Command:Command:Command: _propertiesCommand:



EX15-16.3EX15-16.3

Move UCS With Mouse-Pick

Command:

Rotate UCS Axes with • NEW

• 3Point Option



EX15-16.4EX15-16.4Command: ucsCurrent ucs name: *WORLD*Enter an option [New/Move/orthoGraphic/Prev/Restore/Save/Del/Apply/?/World] <World>: mSpecify new origin point or [Zdepth]<0,0,0>:

Command: ucsCurrent ucs name: *NO NAME*Enter an option [New/Move/orthoGraphic/Prev/Restore/Save/Del/Apply/?/World] <World>: nSpecify origin of new UCS or [ZAxis/3point/OBject/Face/View/X/Y/Z] <0,0,0>: 3point

Specify new origin point <0,0,0>:Specify point on positive portion of X-axis <1.0000,0.0000,0.0000>: neatoSpecify point on positive-Y portion of the UCS XY plane <0.0000,-1.0000,0.0000>:Command: Specify opposite corner: *Cancel*



EX15-16.5EX15-16.5

Set Thickness to 13

Draw Side-Box using Xline and Line

Command: thicknessEnter new value for THICKNESS <0.0000>: 13

Command: xlXLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]:Specify through point:Specify through point:

Command:XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]:Specify through point: neatoSpecify through point:

Command:XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: o

Specify offset distance or [Through] <Through>: 37



EX15-16.6EX15-16.6

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] <37.0000>: 30

Select a line object:Specify side to offset:Select a line object:

Command: lLINE Specify first point:Specify next point or [Undo]:Specify next point or [Undo]:Specify next point or [Close/Undo]:Specify next point or [Close/Undo]:Specify next point or [Close/Undo]: *Cancel*



EX15-16.7EX15-16.7

Locate Circle Ctr with XLines

Draw Circle

Command: xlXLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: oSpecify offset distance or [Through] <37.0000>: 12Select a line object:Specify side to offset:Select a line object:Specify side to offset: *Cancel*

Command: xlXLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: oSpecify offset distance or [Through] <12.0000>: 15Select a line object:Specify side to offset:Select a line object: *Cancel*

Command: cCIRCLE Specify center point for circle or [3P/2P/Ttr (tan tan radius)]:Specify radius of circle or [Diameter] <6.5000>: dSpecify diameter of circle <13.0000>: 16



EX15-16.8 – Final ResultEX15-16.8 – Final Result



EX15-22.1EX15-22.1

Base Form in WCS• Xline

• Line

• Circle & Arc

Command: limitsReset Model space limits:Specify lower left corner or [ON/OFF] <0.0000,0.0000>:Specify upper right corner <420.0000,297.0000>: 297,210

Command: '_layerCommand: xlXLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]:Specify through point: <Ortho on>Specify through point:

Command:XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]:Specify through point:Specify through point:



EX15-22.2EX15-22.2Command:XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: oSpecify offset distance or [Through] <Through>: 70Select a line object:Specify side to offset:Select a line object:

Command:XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: oSpecify offset distance or [Through] <70.0000>: 60Select 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]: oSpecify offset distance or [Through] <60.0000>: 35Select a line object:Specify side to offset:Select a line object:Specify side to offset:Select a line object:



EX15-22.3EX15-22.3Command: xlXLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: oSpecify offset distance or [Through] <35.0000>: 10Select a line object:Specify side to offset:Select a line object: *Cancel*

Command: lLINE Specify first point:Specify next point or [Undo]:Specify next point or [Undo]:Specify next point or [Close/Undo]:Specify next point or [Close/Undo]:Specify next point or [Close/Undo]: *Cancel*

Command: lLINE Specify first point:Specify next point or [Undo]:Specify next point or [Undo]:Specify next point or [Close/Undo]:



EX15-22.4EX15-22.4Command: cCIRCLE Specify center point for circle or [3P/2P/Ttr (tan tan radius)]:Specify radius of circle or [Diameter]: dSpecify diameter of circle: 10

Command: arcSpecify start point of arc or [Center]:Specify second point of arc or [Center/End]:Specify end point of arc:Command:



EX15-22.5EX15-22.5Command: _-view Enter an option [?/Categorize/lAyer state/Orthographic/Delete/Restore/Save/Ucs/Window]: _swiso Regenerating model.

Command: trTRIMView is not plan to UCS. Command results may not be obvious.Current settings: Projection=UCS, Edge=NoneSelect cutting edges ...Select objects or <select all>: 1 foundSelect 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: <Snap off>Command: Specify opposite corner:Command:Command:Command:Command:Command:Command: _propertiesCommand



EX15-22.6EX15-22.6

Draw Ø24 Knob• Xline

• Thickness = -18

• Circle

Command: xlXLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: cenofSpecify through point: midofSpecify through point:

Command: xlXLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: oSpecify offset distance or [Through] <10.0000>: 30Select a line object:Specify side to offset:Select a line object: *Cancel*

Command: ThicknessEnter new value for THICKNESS <0.0000>: -18

Command: cCIRCLE Specify center point for circle or [3P/2P/Ttr (tan tan radius)]:Specify radius of circle or [Diameter] <5.0000>: dSpecify diameter of circle <10.0000>: 24



EX15-22.7EX15-22.7

3D Orbit to Obtain Good View

Move UCS to make SemiCirc Prisms

Command: ucsCurrent ucs name: *WORLD*Enter an option [New/Move/orthoGraphic/Prev/Restore/Save/Del/Apply/?/World] <World>: nSpecify origin of new UCS or [ZAxis/3point/OBject/Face/View/X/Y/Z] <0,0,0>: xSpecify rotation angle about X axis <90>: -90

Command:UCSCurrent ucs name: *NO NAME*Enter an option [New/Move/orthoGraphic/Prev/Restore/Save/Del/Apply/?/World] <World>: mSpecify new origin point or [Zdepth]<0,0,0>: midofCommand:



EX15-22.8EX15-22.8

Make Pedestal Base with Circle, Thickness = 8, Arc

Command: thicknessEnter new value for THICKNESS <-18.0000>: 0

Command: cCIRCLE Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: midofSpecify radius of circle or [Diameter] <12.0000>: dSpecify diameter of circle <24.0000>: 40

Command: xlXLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]:Specify through point:Specify through point:

Command: thicknessEnter new value for THICKNESS <0.0000>: 8

Command: arcSpecify start point of arc or [Center]:Specify second point of arc or [Center/End]: cSpecify center point of arc: midofSpecify end point of arc or [Angle/chord Length]:Command: *Cancel*



EX15-22.9EX15-22.9

Make SemiCirc Prism• Move UCS

• Thickness = 40

• Circle & Arc

Command: ucsCurrent ucs name: *NO NAME*Enter an option [New/Move/orthoGraphic/Prev/Restore/Save/Del/Apply/?/World] <World>: mSpecify new origin point or [Zdepth]<0,0,0>: midof

Command: cCIRCLE Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: midofSpecify radius of circle or [Diameter] <20.0000>: dSpecify diameter of circle <40.0000>: 28

Command: ThicknessEnter new value for THICKNESS <0.0000>: 40



EX15-22.10EX15-22.10

Make SemiCirc Prism• Move UCS

• Thickness = 40

• Circle & Arc

Command: arcSpecify start point of arc or [Center]:Specify second point of arc or [Center/End]: cSpecify center point of arc: midofSpecify 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 <40.0000>: 0

Command: lLINE Specify first point:Specify next point or [Undo]:Specify next point or [Undo]:

[email protected] engr-22_lec-27_surfacemodel-2.ppt 1 bruce mayer, pe engineering 22 –...

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