ENGR-22_Lec-29_SolidModel-2.ppt 1 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Bruce Mayer, PE Licensed Electrical & Mechanical Engineer Engineering 22 Solid Modeling - 2

ENGR-22_Lec-29_SolidModel-2.ppt 2 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Learning Goals  Describe How AutoCAD SOLIDs differ from WireFrames and Surfaces  Create AutoCAD “Primitive” Solids Box, Wedge, Cylinder, Sphere, etc.  Slice and Section 3D Solids  Use ACAD “Boolean” Operations to create Solids Interfere, Union, Subtract  Combine Primitives to Make new Solids

ENGR-22_Lec-29_SolidModel-2.ppt 3 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Constructive Solid Geometry (CSG)  Standard “primitive” shapes  AutoCAD has six primitives: box, wedge, cone, cylinder, torus, sphere  Primitives are moved into place with 3D commands to assemble object  Primitive are combined with boolean commands: union, subtract, interfere

ENGR-22_Lec-29_SolidModel-2.ppt 4 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Recall The Primitive Solids

ENGR-22_Lec-29_SolidModel-2.ppt 5 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Move Primitives into Position  Make use of geometry of the object Object snap (Osnap) endpoint, midpoint, center, quadrant, etc. cursor menu (Shift - right click)  Move command (2D)  3D commands to rotate, mirror, align, and array

ENGR-22_Lec-29_SolidModel-2.ppt 6 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Construct Primitives in Place  Use Osnap to locate starting point of primitive on existing geometry  Position UCS to locate starting point  Reorient UCS to construct cylinders and wedges  Cylinder - height in Z axis  Wedge - point in X axis (and Z axis)

ENGR-22_Lec-29_SolidModel-2.ppt 7 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics AutoCAD Solid Model  Create object primitives (box, cylinder, wedge, etc.)  Move into place with 3D commands  Boolean (union, subtract, Interfere) to create single solid  Create object with efficient sequence of operations (plan ahead!!)

ENGR-22_Lec-29_SolidModel-2.ppt 8 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX16-24 EX16-24 MILLIMETERS

ENGR-22_Lec-29_SolidModel-2.ppt 9 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX16-24 Game Plan  Make 13x30x35 Box  Make Solid Cyl → Ø30 O.D. x 13H  Move Cyl to Top- End of Box  Union Box & Cyl  Make Box 13x30x37  Move new Box to Position & Union  Locate w/ xLines cen of Ø16 Hole  Move & Orient UCS at Ø16 Hole Location  Construct Ø16 x 13H Solid Cyl  Subtract Ø16 Cyl from Previous Construction

ENGR-22_Lec-29_SolidModel-2.ppt 10 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Draw Box Command: box Specify corner of box or [CEnter] : Specify corner or [Cube/Length]: l Specify length: 35 Specify width: 30 Specify height: 13  Draw 2 Cylinders Command: cylinder Current wire frame density: ISOLINES=18 Specify center point for base of cylinder or [Elliptical] : mid of Specify radius for base of cylinder or [Diameter]: d Specify diameter for base of cylinder: 30 Specify height of cylinder or [Center of other end]: 13 Command: cylinder Current wire frame density: ISOLINES=18 Specify center point for base of cylinder or [Elliptical] : cen of Specify radius for base of cylinder or [Diameter]: d Specify diameter for base of cylinder: 13 Specify height of cylinder or [Center of other end]: 13

ENGR-22_Lec-29_SolidModel-2.ppt 11 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Add & Subtract UNION of BOX & Lg- CYLINDER SUBTRACT Small- CLYINDER  Pick Objects with Mouse Command: union Select objects: 1 found Select objects: 1 found, 2 total Select objects: Command: subtract Select solids and regions to subtract from.. Select objects: 1 found Select objects: Select solids and regions to subtract.. Select objects: 1 found Select objects: Command:

ENGR-22_Lec-29_SolidModel-2.ppt 12 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Make Tall Box, and Move into Position  For Move locate corners using OSnap Command: box Specify corner of box or [CEnter] : Specify corner or [Cube/Length]: l Specify length: 30 Specify width: 13 Specify height: 37 Command: m MOVE Select objects: 1 found Select objects: Specify base point or [Displacement] : Specify second point or :  Pick Objects with Mouse

ENGR-22_Lec-29_SolidModel-2.ppt 13 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Move UCS to Face of Tall Box  Rotate Axes with 3Pt 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] : 3p Specify new origin point : Specify point on positive portion of X-axis : Specify point on positive-Y portion of the UCS XY plane :

ENGR-22_Lec-29_SolidModel-2.ppt 14 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Locate Ø16 Hole-Ctr with xLines & OffSet  Can Only OffSet in UCS X-Y Plane 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: Command: 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: Command: 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:

ENGR-22_Lec-29_SolidModel-2.ppt 15 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Draw Cylinder Command: cylinder Current wire frame density: ISOLINES=18 Specify center point for base of cylinder or [Elliptical] : Specify radius for base of cylinder or [Diameter]: d Specify diameter for base of cylinder: 16 Specify height of cylinder or [Center of other end]: -13  Note: Cyl-Hgt is NEGATIVE

ENGR-22_Lec-29_SolidModel-2.ppt 16 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Add & Subtract UNION of Main-Part & Tall Box SUBTRACT Ø Cyl  Use HIDE For Visualization Command: union Select objects: 1 found Select objects: 1 found, 2 total Select objects: Command: subtract Select solids and regions to subtract from.. Select objects: 1 found Select objects: Select solids and regions to subtract.. Select objects: 1 found Select objects: Command: Command: _hide Regenerating model.

ENGR-22_Lec-29_SolidModel-2.ppt 17 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX16-19

ENGR-22_Lec-29_SolidModel-2.ppt 18 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX16-19 Game Plan  Make Two Cylinders Ø40x30L Ø28x50L  Union the Two Cyls to make a “Stepped” Shaft  Make Box 60 X 40W x (40-19 = 21)H  Locate Box Position on Stepped Shaft  Subtract Box from Stepped Shaft Creates the “Flat” 19 Above the bottom  Erase Box  Make Ø12 Cylinder thru Flat  Subtract Cyl from the structure  Erase Cyl

ENGR-22_Lec-29_SolidModel-2.ppt 19 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Make Cyl’s Command: cylinder Current wire frame density: ISOLINES=24 Specify center point for base of cylinder or [Elliptical] : Specify radius for base of cylinder or [Diameter]: d Specify diameter for base of cylinder: 40 Specify height of cylinder or [Center of other end]: 30  Move & Union Cyls w/ Osnap to Make Stepped Shaft

ENGR-22_Lec-29_SolidModel-2.ppt 20 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX Command: CYLINDER Current wire frame density: ISOLINES=24 Specify center point for base of cylinder or [Elliptical] : Specify radius for base of cylinder or [Diameter]: d Specify diameter for base of cylinder: 28 Specify height of cylinder or [Center of other end]: 60 Command: m MOVE Select objects: 1 found Select objects: Specify base point or [Displacement] : cen of Specify second point or : cen of Command: union Select objects: 1 found Select objects: 1 found, 2 total Select objects: *Cancel* Command

ENGR-22_Lec-29_SolidModel-2.ppt 21 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Make Box and Locate Box Position with xLines Command: box Specify corner of box or [CEnter] : Specify corner or [Cube/Length]: l Specify length: 40 Specify width: 21 Specify height: 60 Command: xl XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: cen of Specify through point: Command: XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: o Specify offset distance or [Through] : 5 Select a line object: Specify side to offset: Select a line object: Command: xl XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: cen of Specify through point:

ENGR-22_Lec-29_SolidModel-2.ppt 22 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Move Box and Subtract Command: m MOVE Select objects: 1 found Select objects: Specify base point or [Displacement] : Specify second point or : Command: _subtract Select solids and regions to subtract from.. Select objects: 1 found Select objects: Select solids and regions to subtract.. Select objects: 1 found Select objects:

ENGR-22_Lec-29_SolidModel-2.ppt 23 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Move UCS to Locate and Create Ø12 Hole Command: xl XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: mid of Specify through point: Command: xl XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: mid of Specify through point: Command: *Cancel* Command: ucs Current ucs name: *WORLD* Enter an option [New/Move/orthoGraphic/Prev/Restore/S ave/Del/Apply/?/World] : n Specify origin of new UCS or [ZAxis/3point/OBject/Face/View/X/Y/Z] :

ENGR-22_Lec-29_SolidModel-2.ppt 24 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Move UCS to Locate and Create Ø12 Hole Command: UCS Current ucs name: *NO NAME* Enter an option [New/Move/orthoGraphic/Prev/Restore/S ave/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: cylinder Current wire frame density: ISOLINES=24 Specify center point for base of cylinder or [Elliptical] : Specify radius for base of cylinder or [Diameter]: d Specify diameter for base of cylinder: 12 Specify height of cylinder or [Center of other end]: 22 Command:

ENGR-22_Lec-29_SolidModel-2.ppt 25 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Subtract Ø12 Cyl, and Chamfer Front Edge Command: _subtract Select solids and regions to subtract from.. Select objects: 1 found Select objects: Select solids and regions to subtract.. Select objects: 1 found Select objects:

ENGR-22_Lec-29_SolidModel-2.ppt 26 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Subtract Ø12 Cyl, and Chamfer Front Edge Command: chamfer (TRIM mode) Current chamfer Dist1 = , Dist2 = Select first line or [Undo/Polyline/Distance/Angle/Trim/mE thod/Multiple]: d Specify first chamfer distance : 5 Specify second chamfer distance : Select first line or [Undo/Polyline/Distance/Angle/Trim/mE thod/Multiple]: Base surface selection... Enter surface selection option [Next/OK (current)] : Specify base surface chamfer distance : Specify other surface chamfer distance : Select an edge or [Loop]: Command:

ENGR-22_Lec-29_SolidModel-2.ppt 27 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Rotate UCS and Object to set SEISO View Command: ucs Current ucs name: *NO NAME* Enter an option [New/Move/orthoGraphic/Prev/Restore/S ave/Del/Apply/?/World] : m Specify new origin point or [Zdepth] : mid of Command: Command: _plan Enter an option [Current ucs/Ucs/World] : Regenerating model. Command: rotate Current positive angle in UCS: ANGDIR=counterclockwise ANGBASE=0 Select objects: 1 found Select objects: Specify base point: 0,0 Specify rotation angle or [Copy/Reference] : 90

ENGR-22_Lec-29_SolidModel-2.ppt 28 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Rotate UCS and Object to set SEISO View 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] : y Specify rotation angle about Y axis : 90 Command: rotate Current positive angle in UCS: ANGDIR=counterclockwise ANGBASE=0 Select objects: 1 found Select objects: Specify base point: 0,0 Specify rotation angle or [Copy/Reference] : -90 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] : x Specify rotation angle about X axis : 90 Command

ENGR-22_Lec-29_SolidModel-2.ppt 29 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX16-19 Result  WireFrame HIDE  Gourand SHADE

ENGR-22_Lec-29_SolidModel-2.ppt 30 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Demo → EX16-37 GAME PLAN  Use TopView from Lecture15 as Base of Object  Extrude to 2.50 High  Slice at 45°  Locate Hole Ctr and make ؽ Cylinder EX16-37 INCHES

ENGR-22_Lec-29_SolidModel-2.ppt 31 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Game Plan cont.  Subtract ؽ From Main Block  Make 1x0.25x0.75 Box and move into place on Main Block  Subtract Box From Main Block  Make Triangular Prism of height 2.5  Move Prism into place on Main Block and Subtract

ENGR-22_Lec-29_SolidModel-2.ppt 32 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Use PEdit to Make Base form in PolyLine to Extrude Command: pedit Select polyline or [Multiple]: Object selected is not a polyline Do you want to turn it into one? Enter an option [Close/Join/Width/Edit vertex/Fit/Spline/Decurve/Ltype gen/Undo]: j Select objects: 1 found Select objects: 1 found, 2 total Select objects: 1 found, 3 total Select objects: 1 found, 4 total Select objects: 1 found, 5 total Select objects: 1 found, 6 total Select objects: 1 found, 7 total Select objects: 7 segments added to polyline Enter an option [Open/Join/Width/Edit vertex/Fit/Spline/Decurve/Ltype gen/Undo]: Start with Demo_EX16-37_StartFrom_EX dwg

ENGR-22_Lec-29_SolidModel-2.ppt 33 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Extrude PLine to 2.5H  Enclose in Bounding Box  xLines to Define Slice-Plane Pts

ENGR-22_Lec-29_SolidModel-2.ppt 34 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Use Slice to Cut Form at 45° Command: slice Select objects: 1 found Select objects: Specify first point on slicing plane by [Object/Zaxis/View/XY/YZ/ZX/3poin ts] : Specify second point on plane: Specify third point on plane: Specify a point on desired side of the plane or [keep Both sides]:Command

ENGR-22_Lec-29_SolidModel-2.ppt 35 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Locate Hole Center on Slant-Face 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] : 3p Specify new origin point : Specify point on positive portion of X-axis : Specify point on positive-Y portion of the UCS XY plane : Command: xl XLINE Specify a point or [Hor/Ver/Ang/Bisect/Offset]: o Specify offset distance or [Through] :.88 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] : 1.06 Select a line object: Specify side to offset: Select a line object:

ENGR-22_Lec-29_SolidModel-2.ppt 36 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Draw Long Cylinder thru Block Command: cylinder Current wire frame density: ISOLINES=24 Specify center point for base of cylinder or [Elliptical] : Specify radius for base of cylinder or [Diameter]: d Specify diameter for base of cylinder:.5 Specify height of cylinder or [Center of other end]: -3 Command:

ENGR-22_Lec-29_SolidModel-2.ppt 37 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX  Subtract Cyl from Block to complete Command: subtract Select solids and regions to subtract from.. Select objects: 1 found Select objects: Select solids and regions to subtract.. Select objects: 1 found Select objects:

ENGR-22_Lec-29_SolidModel-2.ppt 38 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX16-37 Result  Today  Lec15 Sketch

ENGR-22_Lec-29_SolidModel-2.ppt 39 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics OrthoViews From Solid

ENGR-22_Lec-29_SolidModel-2.ppt 40 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics All Done for Today EX16-37: One Last Look

ENGR-22_Lec-29_SolidModel-2.ppt 41 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Bruce Mayer, PE Licensed Electrical & Mechanical Engineer Engr/Math/Physics 25 Appendix 

ENGR-22_Lec-29_SolidModel-2.ppt 42 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics EX 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