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[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt1
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
Bruce Mayer, PELicensed Electrical & Mechanical Engineer
Engineering 22
AutoCADAutoCAD©© 2D 2D
Construction-2Construction-2
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt2
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
Learning GoalsLearning Goals
Become Proficient with invocation of AutoCAD Drawing Commands
Create Basic AutoCAD 2-Dimensional Drawing Elements • e.g.; Lines, Circles, Ellipses and PolyGons
Use a Combination of ACAD 2D Element to construct more Complex 2D Shapes
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt3
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
Last TimeLast Time
Line Construction Line Circle Circle Center Lines PolyLines Spline Ellipse Erase
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt4
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
RECTANGLE CommandRECTANGLE Command The RECTANGLE
command draws a rectangle whose sides are vertical and horizontal. • The position and size
of the rectangle are defined by picking two diagonal corners
A very Easy to use Command
To Invoke the Rectangle Command• PullDown Menu:
Draw → Rectangle
• The Tool on the Drawing ToolBar
• Command Line: RECTANGLE or REC or RECTANG
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt5
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
POLYGON CommandPOLYGON Command The Polygon
command can be used to draw any REGULAR polygon from 3 sides up to 1024 sides
POLYGON Requires 4 User Inputs1. number of sides
2. a pick-point for the polygon center
3. whether the polygon is inscribed or circumscribed
4. a pick point which determines both the radius of this imaginary I/C circle and the orientation of the polygon
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt6
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
POLYGON CommandPOLYGON Command To Invoke the
Polygon Command• PullDown Menu:
Draw → Polygon
• The Tool on the Drawing ToolBar
• Command Line: POLYGON or POL
• Inscribed Heptagon– 2” R
• Circumscribed Heptagon– 2” R
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt7
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
POINT CommandPOINT Command The POINT
command inserts a point marker in the drawing at a position which you pick in the drawing window or at any co-ordinate location which you enter at the keyboard.
The default point style is a simple dot This is often difficult
to see The point style Can
Be Changed to something more easily visible or elaborate using the point style dialog box.
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt8
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
POINT CommandPOINT Command To Invoke the Point
Command• PullDown Menu:
Draw → Point
• The Tool on the Drawing ToolBar
• Command Line: POINT
To Change the Point Shape Activate Point Style Dialog box• PullDown Menu:
Format → Point Sytle...
• Command Line: DDPTYPE
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt9
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
POINT StylePOINT Style The Point Style
Dialog box • Default Point Style
• Fine-Tuned Point Style
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt10
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
TEXT CommandTEXT Command The TEXT
command inserts a SINGLE LINE of Text into the dwg
To Invoke the TEXT command• PullDown Menu:
Draw → Text → Single Line Text
• Command Line: TEXT
Text Inserts Text at
Mouse Pick-Point Always
Expects another Line
Command: textCurrent text style: "Standard" Text height: 0.0000Specify start point of text or [Justify/Style]:Specify height <0.2000>: .3Specify rotation angle of text <0>:Command:Command:Command: *Cancel*
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt11
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
MTEXT CommandMTEXT Command The MTEXT
command inserts a BOX in Which Multiple Lines of Text are Placed
To Invoke the MTEXT command• PullDown Menu:
Draw → Text → Mulitline Text
• Command Line: MTEXT
The Tool on the Drawing ToolBar
Inserts a “Rectangle-Like” Text Box, along with the Text Formatting DiaLog Box
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt12
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
MTEXT ExampleMTEXT Example
Form MultiLine Box by Dragging Corners
Text formatting Box Invoked Automatically by MTEXT command
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt13
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
Text OptionsText Options MText Turns on the
Text Formatting Dialog Box
DText (Dynamic text) Invokes Command Line Options:
Command: dtextCurrent text style: "Standard" Text height: 0.3000Specify start point of text or [Justify/Style]: jEnter an option [Align/Fit/Center/Middle/Right/TL/TC/TR/ML/MC/MR/BL/BC/BR]:
Justification Examples
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt14
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
Editing/Tuning CommandsEditing/Tuning Commands
Move
Copy
OffSet
Mirror
• VERYUseful
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt15
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
Editing/Tuning Commands Editing/Tuning Commands contcont
Array
Rotate
Trim
Extend
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt16
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
Editing/Tuning Commands Editing/Tuning Commands contcont
Break
Chamfer
Fillet
Table
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt17
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
All Done for TodayAll Done for Today
Its Fill-Lĕt,NOT
Fill-Lāy
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt18
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
Bruce Mayer, PELicensed Electrical & Mechanical Engineer
Engr/Math/Physics 25
AppendiAppendixx
6972 23 xxxxf
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt19
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
Break CommandBreak Command
Command: breakSelect object: quadofSpecify second break point or [First point]: neato
Breaks CCW
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt20
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
DemoDemo
Open AcadIso.dwg Set Limits: 297, 210 Grid/Snap: 5/1 Make Obj layer
• Magenta & Cont.
Draw Obrnd Slot• 4 dia, 10 ctr-to-ctr
Array slot• 3x5
Rotate Middle Slot by -37 deg• Use Line-mid
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt21
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
Demo - 2Demo - 2
Draw Rectangle Above, & Polygon below the slanted Slot
Extend the slot sides to the rect & ellipse
Break Ell with Break Command• Use First Point
Option
Stretch Col-5 Slots to Right• Try withOUT & With
CROSSING option
For the Previously Drawn Rectangle for 2 corners each• Chamfer – 2.7
• Fillet – 4.3– ReFillet to 0
[email protected] • ENGR-22_Lec-04_2D_Construction-2.ppt22
Bruce Mayer, PE Engineering 22 – Engineering Design Graphics
Demo - 3Demo - 3
Make Table• 3 x 2
• Col width = 13
• Txt ht = 3