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Lecture Seven

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Title: Lecture Seven


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(No Transcript)
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Lecture Seven
3D Operating and Creating complex 3D Solids
From 2D Parts to 2D Assembly Drawing
From 3D Parts to 3D Assembly
System Variable and Application
3
One of teaching goals
3D Operating and Creating complex 3D Solids
Rolling Bearing
Inside ring Supporting Ring rolling
bodies Outside ring
4
Two of teaching goals From 3D solid
to 2D projecting views
5
Reviewing last lecture contents briefly by
questions
Pointing out the English Commands
consistent with given icon button
????????????????
Question One
  • Box , Sphere, Cylinder, Cone, Wedge, Torus,
    Extrude, Revolve, Slice, Shell
  • Section, Interference, Union, Subtract,
    Intersect, Extrude Face, Color Face
  • Question Two
  • Pointing out the differences between Slice
    and Section commands
  • ??Slice ?
    Section?????
  • Question Three
  • Pointing out the differences between
    Extrude on the Solids tool bar and Extrude
    Face on the Solids Editing tool bar.
  • ???????????????????????????????

6
Reviewing last lecture contents briefly by
pictures
INTERFERENCE
UNION
INTERSECT
SUBTRACT
Color Face Shell
Chamfer Fillet
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1. 3D Operating and Creating complex 3D solids
Mirror 3D 3D Array
Rotate 3D Align
Extrude Face
8
3D Operating and Creating complex 3D solids
Teaching case One Thinking
One How to create supports ring of Rolling
Bearing
9
Creating Supporting ring for rolling bearing step
by step Interactive computer graphics
(ICG) ????????
The One of Methods
3.Cylinder Subtract Spheres
1.Cylinder Sphere
2.Array Spheres
4.Shell by removing bottom side face
9.Subtract small cylinder and 3D mirror
5.Creating two cylinders
6.Subtract a cylinder
7.Intersecting to two bodies
8.Array small cylinders
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Creating Supporting ring for rolling bearing step
by step Interactive computer graphics
(ICG) ????????
The Two of Methods
11
Creating Supporting ring for rolling bearing step
by step Automatic programming drawing by
AutoLISP language
?AutoLISP????????
The Three of Methods
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3D Operating and Creating complex 3D solids
Teaching case
Two Thinking One How to Create The Box Cover
with inclined surface
(1) Extrude Loop (2) Solidedit-Shell
(3) Subtract Cylinders
(4) UCS-new-3point (5) Box Mirror 3D
(6) Subtract Boxes
13
2. From 3D Solids to 2D Drawings
  • In a Model space of a layout
    pull-down Menu
  • Draw-Solids-Setup-Profile


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From 3D Solids to 2D Drawings in a Layout
(1) from Model Space to Layout

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  • Operating
  • Transforming
  • Model
  • In Model Space
  • of the Layout

(2) Changing sheet Dimension In a Paper
Space of the Layout
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(4) Operating 3D Model in Model Space of the
Layout
(a) Changing Display Model from 3D Solid to 2D
wireframe (b) Changing Views direction from 3D
Isometric view to 2D view (c) Copying Views from
one view to four views
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(5) Modifying 3D Model in Model Space of the
Layout
(a) Rotating Top View About X-Axis 90 at mid
point of bottom line (b) Rotating Left View
About Y-Axis 90 at mid point of bottom line (c)
Rotating Isometric View About Y-Axis 45and
X-Axis 30
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(6) Changing view direction to
Isometric Showing four 2D project drawings
and their 3D Models
(7) Erasing Four 3D Models Showing Four 2D
Project drawings
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(8) Changing view direction to Ortho (9) Showing
Hidden line by setting color and line type
in PH-22A layer
(10) Exploding HIDDEN line of PH
Layer (11) Erasing HIDDEN line of 2D
Isometric View (12) Drawing Center line
in three Ortho Views
Finishing From 3D Model to 2D Project views
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From 3D solid to 2D project views with section
and title block
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3. From 2D Parts Drawing to 2D Assembly Drawing
  • Making Block Inserting
    Block


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Modifying Assembly Block
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4. From 3D Parts Drawing to 3D Assembly Drawing
  • Insert-Block-Browse
    Modify-Align

Osnap Center Point Osnap Quadrant Point
Inserting outside Block made by Wblock
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5. System Variables and Application
  • LTSCALE System Variable
  • Sets the global linetype scale factor
  • From command line input LTSCALE and its value

Ltscale 1.0 Center line length Dashed line
length
Ltscale 0.3 Center line length Dashed line
length
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DIMLFAC System Variable
Setting a scale factor for linear dimension
measurements
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6. Layoutting paper and printting output
  • 6.1 Model space and Paper
    space
  • There are two distinct working environments,
    or spaces, in which you can create objects in a
    drawing.
  • Model Space
  • A model that composed of geometric objects
    is created in a three-dimensional space is called
    model space.
  • In model space, you draw your model at 11
    scale, and you decide whether one unit represents
    one millimeter, one centimeter, and so on.
  • Paper Space
  • A final layout of specific views and
    annotations of this model is created in a
    two-dimensional space called paper space.

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Paper space
  • Paper space is a sheet layout environment where
    you can specify the size of your sheet, add a
    title block, display multiple views of your
    model, and create dimensions and notes for your
    drawing.
  • Use paper space for composing your drawing sheet
    and defining views.
  • In paper space, one unit represents the paper
    distance on a plotted sheet. The units will be in
    either millimeters or inches, depending on the
    plot setup for your plotter.

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6.2 Creating layouts
  • On a layout tab, each layout viewport is like a
    picture frame containing a photograph of the
    model. Each layout viewport contains a view that
    displays the model at the scale and orientation
    that you specify. You can also specify which
    layers are visible in each layout viewport.
  • After you finish arranging the layout, you turn
    off the layer that contains the layout viewport
    objects. The views are still visible, and you can
    plot the layout without displaying the viewport
    boundaries.

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6.3 printing output
  • After you've created your drawing with AutoCAD
    you can print your designs on a sheet of paper or
    create an electronic plot that is accessible from
    the World Wide Web.
  • A plotted drawing can contain a single view of
    your drawing or a more complex arrangement of
    views. Depending on your needs, you can plot one
    or more viewports or set options that determine
    what is plotted and how the image fits on the
    paper.

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Printing Output From the Layout Drawing
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Setting Up Print Options of ePlot
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Outputting and Displaying ePlot File
Layout2.dwf
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Printing Output from the Model Space Drawing
Line weight 1.0
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Previewing Print Output Result
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Outputting and Displaying ePlot File
model.dwf
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AutoCAD-Edit-Copy link-Word-Paste
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Exercises After class
  • Creating 2D views from a 3D Solid in layout
  • Print Drawings from ePlot

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(No Transcript)
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