3D AutoCAD Training Materials 2

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ECH3906Computer Aided Chemical Engine

Section 1: Solid Editing

Section 2: Section Plane and Multiview Drawing of 3-D Solid

Week 12–

29th

November 2015



Learning Outcome To visualize and handle 3-D solid in a 3 dimensional plane (1) choosing

different views such as top, bottom, isometric, etc. (2) rotate, move, copy 3-Dsolid (3) creating 2-D drawing in different plane (XY, YZ, XZ)

To create basic 3-D solid (preloaded solid function) i.e. pyramid, box, cylinder,torus etc.

To create custom 3-D solid using extrude, loft, revolve, and sweep function

Edit and modify 3-D solid using union, subtract, fillet, shell etc.

Create multiple section plane and present drawing properly in a paper

Important: due to time limitation, only basic feature will be taught . The rest you need to explore yourself (need at least 1 year to maste



Before Start Training Make sure you are in 3-D Modelling Interface not in Drafting and Annotation

Move your command line to the bottom of the interface and expand your command line. Uncheck u

Make sure default view is SW Isometric. If not, Move Cursor to Top Left of your drawing sheet >Select SW Isometric

Now you are ready for 3-D AutoCAD training

Important: default view for 3-D drawing is SW Isometric. View Control can be changed depending on situation and suit



SECTION 1Solid Editing



Solid Editing (Subtract)Subtract Function

Type Subtract or Go to Solid Tab > Boolean ribbon > Select Subtract

Create 2 solid (make sure the solid intersect ) > Type Subtract > Select 1st

solid (edited solid) > Select 2nd solid (scissor solid)

Characteristic of Subtract Function

Subtract function is a 3-D version of 2-D trim

Intersecting solid region will be removed

Important: make sure the drawing is in consist of one object to create 3-D solid



Training (Section 1 - 1) Design intention (1) – Create solid below using extrude and subtract function

Important: make sure to JOIN your 2-D drawing

Extrude length = 56

R17R11

35

8 1717

5 15110

12



Solid Editing (Union)Union Function

Type Union or Go to Solid Tab > Boolean ribbon > Select Union

Create 2 solid (make sure the solid intersect ) > Type Union > Select solid

Characteristic of Union Function

Union function is a 3-D version of 2-D join

Selected solid will be combined into one solid




Training (Section 1 - 2) Design intention (1) – Create 2 separate solid using extrude function

Design intention (2) – Join both solid using union function function


Extrude length = 5

R5 2.5



Solid Editing (Shell)Shell Function

Type Solidedit > Type B > Type S or Go to Solid Tab > Solid Editing ribbon > Select Shell

Characteristic of Shell Function

Shell function is used to create hollow object with a specified thickness

The user need to remove one or many faces/surface depending on need




Training (Section 1 - 3) Design intention (1) – Copy object created in Training (Section 3-3)

Design intention (2) – Create a hollow object with thickness of 0.5




Solid Editing (Fillet Edge)Shell Function

Type Filletedge or Go to Solid Tab > Solid Editing ribbon > Select Fillet Edge

Characteristic of Fillet Edge Function

Fillet Edge function is a 3-D version of 2-D fillet

The user need specify fillet radius




Training (Section 1 - 4) Design intention (1) – Create an object using extrude function

Design intention (2) – Join both object into one using Union function

Design intention (3) – smooth the edge of the solid using Filletedge function


5

R

5

Extrude length (cylinder) = 7

Extrude length (square) = 5

Fillet radius = 0.5



B

C

Fillet (small) – R0.5

Fillet (big)–

R1.5

Chamfer distance (1st - 0.

Create C using mirror fun

Sphere dimension = R2.5

No of item = 10

New Command: LAYER

Convert to diagram B

Training (Overall – Ball Bearing) Design intention (1) – Create an object shown below


10

1

A

2

2

84

2

10

15

15



Training (Overall – Impeller) Design intention (1) – Create an object shown below


New Command: NETWORK & PRESSPULL &

THICKEN & SPLINE

3.75

3.75

3.75

3.75

3.75

3.75

3.75

3.75

2

4

6

8

10

12

14

16

Rotation increment -6 degrees

Thickness – 0.3

No of item – 16

R20

Extrude length 2

R

R

P



Exercise (Section 1 - 1) Try to create solid shown below:




Exercise (Section 1 - 2) Try to create solid shown below:




SECTION 2Section Plane and Multiview Drawing

Solid



Multiview DrawingFlatshot Function

To create multi-view drawing (Top, Front, and Side View) of a solid manually timeconsuming and tedious.

Flatshot function allow the user to create multi-view drawing in short amount of

time

Type Flatshot or Go to Home Tab > Section Plane (Section) ribbon > Select Flatshot

Characteristic of Flatshot function

2D representation of the drawing is based on current view.

Flatshot object is a single object . This object need to be exploded for additionalchanges

To create Top View > Change View to Top View > Select Object > Select Flatshot (2Drepresentation will be in XY plane) – depend on object orientation/axis

To create Side View > Change View to Left/Right > Select Object > Select Flatshot (2D representation will be in YZ plane) – depend on object orientation/axis

To create Front View > Change View to Front/Back View > Select Object > Select Flatshot (2D representation will be in XZ plane) – depend on object orientation/axis

All drawing need to be rotated and moved so that it fit A4 area and it is in XY plane




Training (Section 2 - 1) Design intention (1) – Create solid below using extrude and subtract function

Design intention (2) – generate multiview drawing (TOP, FRONT, SIDE) of the object in XY plane u(Useful command3DROTATE, 3DMOVE)


Center

1.5

6

68 degree angle

14

14

0.5

R1

R2



Section Plane and Generate SectionSection Plane

Allow the user to see the inner part/interior of the solid when it is cut open

Require 2 command which are Section Plane and Generate Section




Section Plane and Generate Section


Straight Line Section Plane Custom Section Plane

Section Plane

Before generate section, the user need to draw section plane.

Type Sectionplane or Go to Home Tab > Select Section Plane

Section plane can be a straight line section plane or custom section plane (need to draw gucommand (Type Addjog) to draw custom section plane



Section Plane and Generate Section (TrainiGenerate Section

The user can generate section only after section plane is drawn.

Generated section can be 2D or 3D

Type Generatesection > select type of section (2D or 3D) > Select Section Plane

HATCH command is useful to change the closed area fill


Generated Section (3D) Generated Sec



Training (Section 2-2) Design intention (1) – generate 2D section plane using straight line section plane

Design intention (2) – generate 3D section plane using custom section plane


Generated Section (3D) Generated S



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3D AutoCAD Training Materials 2

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