autocad tutorial (introductory level)
DESCRIPTION
AutoCAD Tutorial (introductory level). Topics. 1. Introduction. 1. Working environment : Drawing area, Menus, Tools bars, Buttons. 2. Interaction: How to execute a command. 2. Create a drawing. 3. Preparation: Format a layer and dimension style. - PowerPoint PPT PresentationTRANSCRIPT
AutoCAD Tutorial(introductory level)
1. Working environment : Drawing area, Menus, Tools bars, Buttons.
2. Interaction: How to execute a command.
4. Drawing a shape: Commands & Tools (i.e. Ortho mode (F8), object snap (F3))
5. Modifying a shape: Commands
6. Dimensioning: Commands
7. Plotting
3. Preparation: Format a layer and dimension style.
Topics
1. Introduction
2. Create a drawing
3. Print a drawing
1. Workingenvironment
Start the program
1
2
Screen
6. Layer
7. Property
1. Standard
2. Draw3. Modify4. Object snap
5. Dimension
Menu bar
Status line
Command line
Drawing area
Customizing a BackgroundMenu bar:
1. Click “Tool” >> “Options”
Options:
2. Click “Display”
3. Click “Colors…”
Drawing Window Colors:
4. Click “2D model space”
5. Click “Uniform background”
6. Click “Color” (select your prefer
color.)
2
3
4 5 6
Commonly used toolbars
1. Standard
2. Draw
3. Modify
4. Object snap
5. Dimension
6. Layer
7. Properties
Geometricconstruction
1. Standard
1
1. File (New; Open; Save)
2. Plot
3. Undo (Redo button is placed on the right)
5. Zoom
2 3 5
With a mouse scroll wheel
- Rolling forward to “Zoom in”
- Rolling backward to “Zoom out”
4
4. Pan
2. Draw
1 2 3 4 5 6
1. Line
2. Polyline
3. Polygon
4. Rectangle
5. Arc
6. Circle
7 8
7. Hatching
8. Multiline text
3. Modify
1
1. Erase(same as clicking a “delete” button)
2. Copy selection
3. Mirror
4. Offset
5. Array
6. Move
7. Rotate
2 3 4 5 6 7 8 9
8. Trim
9. Extend
11 1210
10. Break at point
11. Chamfer
12. Round
4. Object snap
1 2 3 4 5 6
1. (Snap to) End point
2. Midpoint
3. Intersection
4. Center
5. Quadrant
6. Tangent
7 8
7. Perpendicular
8. Parallel
5. Dimension
1. Linear
2. Aligned
3. Radius
4. Diameter
5. Angular
6. Center mark
1 2 3 4 5 6
6. Layer
1
1. Click “Layer property manager”
On/Off
Lock/Unlock
Layername
7. Properties
Color Linetype Lineweight
Customizing a Toolbar
1. Right click on a toolbar area
2. Select “ACAD”
3. Click on a listed item to open (or close)
toolbar.
2
3
2. Interaction
Execute a command
1. Enter a “keyword or command” in a command line
2. Select from list in menu bar (or right click on
the drawing area to open a short cut menu)
3. Click the button on a toolbar
Method 1
Key in a “keyword” in a command line.
Executedcommand
Option/Properties
Example : Draw a circle
Follows a step-by-step option or guidance.
Method 2
Select a “keyword” from a list in menu bar.
Example : Draw a circle
Follows a step-by-step option or guidance in command line.
1
23
The current step that is displayed a command line is
Method 3
Click the button in a toolbar.
Example : Draw a circle
Follows a step-by-step option or guidance in command line.
Click .
3. Preparation
Format layer : Create a new layer
Create the layers for
visible line, thin line, hidden line, center line, dimension, hatching and text.
1. Menu bar: Click “Format” >> “Layer”
2. Click , Key in “Visible line”
3. Click , Key in “Thin line”
4. Click , Key in “Hidden line”
5. Click , Key in “Center line”
6. Click , Key in “Dimension”
7. Click , Key in “Hatching”
8. Click , Key in “Text”
9. Click “OK”
Exercise
Format layer : Setting a linetype 1/2
1. Menu bar: Click “Format” >> “Linetype”.
2. Click “Load”, Select “CENTER” and Click “OK”.
3. Click “Load”, Select “DASHED” and Click “OK”.
4. Click “OK”.
Exercise
Format layer : Setting a linetype 2/2
5. Open “Layer Properties manager”,Click “Linetype” of a layer “Center line”.
6. Click “CENTER”, click “OK”.
7. Click “Linetype” of a layer “Hidden line”
8. Click “DASHED”, click “OK”.
9. Click “OK”.
Exercise
56
7
8
Format layer : Setting a lineweight
Exercise
1. Open “Layer Properties manager”, Click “Lineweight” of a layer “Visible line”
2. Click “0.6 mm”, click “OK”.
3. Click “OK”.
Answer
Format dimension style 1/5
1. Menu bar: Click “Format” >> “Dimension style”
2. Click “Modify”.
Exercise
2
3. Click tab “Line”
4. Change “Dimension lines” and “Extension lines” to the following format.
Format dimension style 2/5
Exercise
3
5. Click tab “Symbols and Arrows”
6. Change “Arrowheads” to the following format.
Format dimension style 3/5
Exercise
5
7. Click tab “Text”
8. Change “Text style” and “Text color” to the following format.
Format dimension style 4/5
Exercise
7
8
9. Click tab “Primary Units”
10. Change “Precision” and “Decimal separator” to the following format.
11. Click “OK”
Format dimension style 5/5
Exercise
9
4. Drawing a shape
Notes
Meaning of symbols in AutoCAD command line.
• [ ] is used for option
• ( ) is used for explanation
• < > is used for default value
Location of a point can be assigned by
• mouse click on the drawing area or on a specific point of an object.
• key in a cartesian coordinate.
(two numbers separate by a comma, i.e. 50,27 )
• key in a polar coordinate
- distance (from a specified beginning point) and
- angle (CCW from the horizontal axis)
(i.e. @50<60)
Line
Command: line Specify first point: 0,0 Specify next point or [Undo]: 50,50 Specify next point or [Undo]: press ESC
Command: line Specify first point: 0,0 Specify next point or [Undo]: @50<45 Specify next point or [Undo]: press ESC
1
2
Sketch it
Class activity
Sketch it
Rectangle
Command: rectangleSpecify first corner point or [Chamfer/Elevation/Fillet/Thickness/Width]: 15,15Specify other corner point or [Area/Dimensions/Rotation]: @100,60
1
Sketch it
Class activity
Polygon
Command: polygonEnter number of sides <4>: 6Specify center of polygon or [Edge]: 60,60Enter an option [Inscribed in circle/ Circumscribed about circle] <I>: cSpecify radius of circle: 15
Sketch it1
Command: polygonEnter number of sides <4>: 6Specify center of polygon or [Edge]: 60,60Enter an option [Inscribed in circle/ Circumscribed about circle] <I>: iSpecify radius of circle: 15
Sketch it2
Class activity
CircleCommand: circle Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: 50,50 Specify radius of circle or [Diameter] <10.0000>: 20
Command: circle Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: 3p Specify first point on circle: 10,10 Specify second point on circle: 70,70Specify third point on circle: 50,30
1
2
Command: circle Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: Ttr Specify point on object for first tangent of circle: [ the 1st line]Specify point on object for second tangent of circle:[ the 2nd line]Specify radius of circle <59.6074>: 40
3
Sketch it
Sketch it
Sketch it
Class activity
ArcCommand: arcSpecify start point of arc or [Center]: cSpecify center point of arc: 50,50Specify start point of arc: @30<0Specify end point of arc or [Angle/chord Length]: aSpecify included angle: 120
1
Command: arcSpecify start point of arc or [Center]: cSpecify center point of arc: 50,50Specify start point of arc: @30<30Specify end point of arc or [Angle/chord Length]: @50<120
2
Sketch it
Class activity
Sketch it
Hatch
Command: hatch1. Select pattern2. Set angle and scale.3. Click button “Add: Pick points”4. Click inside the closed area.5. Right click6. Click “OK”
Sketch it
1
2 2
3
Sketch it
6
Class activity
Ortho mode on/off
off
on
- If ortho mode is set on, all lines are drawn only along the x-y directions.
- Press [F8] to turn on or off object snap mode.
Object snap mode on/off
Status bar off
on
Right click
Press [F3] to turn on or off object snap mode.
5. Modifying a shape
MoveCommand: moveSelect objects: 1 foundSelect objects: (If finished, click mouse right button)Specify base point or [Displacement] <Displacement>: click on a point BSpecify second point or <use first point as displacement>: @50,30
Specify second point or <use first point as displacement>: 50,30
Specify second point or <use first point as displacement>: @50<30
1
2
3
Class activity
Sketch it Sketch it Sketch it
A
B
A
B
A
B
Copy selection
Class activity
Command: copySelect objects: 1 foundSelect objects: click mouse right buttonSpecify base point or [Displacement] <Displacement>: click on a point BSpecify second point or <use first point as displacement>: @50,30
1
Sketch it
A
B
MirrorCommand: mirrorSelect objects: Specify opposite corner: 4 foundSelect objects: (If finished, click mouse right button)Specify first point of mirror line: click on a point ASpecify second point of mirror line: click on a point BErase source objects? [Yes/No] <N>: n
1
Sketch it
Class activity
A
Bobject
Offset
1
Class activity
Command: offsetSpecify offset distance or [Through/Erase/Layer] <Through>: 30Select object to offset or [Exit/Undo] <Exit>: click on the objectSpecify point on side to offset or [Exit/Multiple/Undo] <Exit>: click on the drawing area
Sketch it Sketch it
Array
1
Class activity
Command: arrayArray dialog box will appear.1.Select type of an array Rectangular2.Input rows, columns, row offset, column offset, angle of array.3.Click button “Select object”.4. Click on an object.5. Right click.6. Click button “OK”
A B
CD
E
Sketch it
object
Array
2
Class activity
Command: arrayArray dialog box will appear.1.Select type of an array : Polar2.Input A and B.3.Click button “Select object”. 3.1 Click on an object. 3.2. Right click.
4. Click button “Center point” 4.1 Click on a center point. 4.2 Right click.
5. Select option “Rotate items as copied” or not
6. Click button “OK”
A
B
Sketch it
object
Rotate
1
Class activity
Command: rotateCurrent positive angle in UCS: ANGDIR=counterclockwise ANGBASE=0Select objects: 1 foundSelect objects: (If finished, click mouse right button)Specify base point: click on a point ASpecify rotation angle or [Copy/Reference] <0>: 30
A
Sketch it
A
Sketch it
Rotate
2
Class activity
Command: rotateCurrent positive angle in UCS: ANGDIR=counterclockwise ANGBASE=0Select objects: 1 foundSelect objects: (If finished, click mouse right button)Specify base point: click on a specific point on the objectSpecify rotation angle or [Copy/Reference] <0>: rSpecify the reference angle <196>: click on point CSpecify second point: click on point DSpecify the new angle or [Points] <0>: pSpecify first point: click on a point ASpecify second point: click on a point B
A
B
C D
Sketch itGiven
Trim
1
Class activity
Command: trimCurrent settings: Projection=UCS, Edge=NoneSelect cutting edges ...Select objects or <select all>: Click on line ABSelect objects: (If finished, click mouse right button)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]: (If finished, click mouse right button)
A
B
Sketch itGiven
Extend
1
Class activity
Sketch it
A
B
C
D
Command: extendCurrent settings: Projection=UCS, Edge=NoneSelect boundary edges ...Select objects or <select all>: Click on line CDSelect objects: (If finished, click mouse right button)Select object to extend or shift-select to trim or[Fence/Crossing/Project/Edge/Undo]: Click on point A.Select object to extend or shift-select to trim or[Fence/Crossing/Project/Edge/Undo]: (If finished, click mouse right button)
Sketch it
A
B
C
D
EF
Break at point
Class activity
Sketch it Sketch it Sketch it
Chamfer
1
Class activity
Command: chamfer(TRIM mode) Current chamfer Dist1 = 0.0000, Dist2 = 0.0000Select first line or [Undo/Polyline/Distance/Angle/Trim/mEthod/Multiple]: dSpecify first chamfer distance <0.0000>: 5Specify second chamfer distance <5.0000>: 5Select first line or [Undo/Polyline/Distance/ Angle/Trim/mEthod/Multiple]: click on line ASelect second line or shift-select to apply corner: click on line B
A
B
Sketch it
Fillet
1
Class activity
Command: filletCurrent settings: Mode = TRIM, Radius = 0.0000Select first object or [Undo/Polyline/Radius/Trim/Multiple]: rSpecify fillet radius <0.0000>: 5Select first object or [Undo/Polyline/Radius/Trim/Multiple]: click on line ASelect second object or shift-select to apply corner: click on line B
A
B
Sketch it
6. Dimensioning
Linear
1. Click on the button2. Follows command lineSpecify first extension line origin or <select object>: Click on point ASpecify second extension line origin: Click on point BSpecify dimension line location or [Mtext/Text/Angle/Horizontal/Vertical/Rotated]: Move the crosshair to your prefer position
then click.
Sketch it Sketch it
A B A
B
Aligned
1. Click on the button2. Follows command lineSpecify first extension line origin or <select object>: Click on point ASpecify second extension line origin: Click on point BSpecify dimension line location or [Mtext/Text/Angle/Horizontal/Vertical/Rotated]: Move the crosshair to your prefer position
then click.
Sketch it
A
B
Angle
1. Click on the button2. Follows command lineSelect arc, circle, line, or <specify vertex>: Click on line ABSelect second line: Click on point ACSpecify dimension arc line location or [Mtext/Text/Angle]: Move the crosshair to your prefer position then click.
Sketch it
A
B
C
Radius
1. Click on the button2. Follows command lineSelect arc or circle: Click on arc ABSpecify dimension line location or [Mtext/Text/Angle]: Move the crosshair to your prefer position
then click.
Sketch it
A
B
Diameter
1. Click on the button2. Follows command lineSelect arc or circle: Click on circleSpecify dimension line location or [Mtext/Text/Angle]: Move the crosshair to your prefer position
then click.
Sketch it
Leader
1. Click on the button2. Follows command lineSpecify first leader point, or [Settings] <Settings>: click on center of a circleSpecify next point: Click for a bend pointSpecify next point: Push F8 if “ortho mode” is off.
<Ortho on> Click for an end point.
Specify text width <0.0000>: Right click (to skip)Enter first line of annotation text <Mtext>: Key in a textEnter next line of annotation text: Right click (to finish)3. Move the arrowhead to a circumferential line.
Sketch it
7. Plotting
Overall steps
1. Create layout (or paper space)
2. Placement and scaling an object.
3. Edit a title block
4. Plot
1. Create layout
1. Go to Menu bar, select
Insert >> layout >> layout from template2. Select “ISO A4 Named Plot Styles” and click “Open”.3. Click “OK” to close insert layout window.4. Click Tab “ISO A4 Title Block (portrait)”.
2
2
3
Exercise
4
Screen
Printableframe
(dash line)
Viewportframe
(continuous line)
Template
Object
NOTES
1. To zoom and pan the object,
double click on viewport area. (To activate a “floating model space”)
2. To return to a paper space
double click on outside
viewport area.
Demonstration
2. Placement and scaling 1/2
1. Activate a floating model
space.
2. In command line, key in
“zoom” [press ENTER],
“extents” [press ENTER].
3. Return to paper space.
Exercise
2. Placement and scaling 2/2
1. Go to menu bar, click
Modify >> Properties
2. Click on viewport frame.
3. Go to properties window,
select “viewport (1)”
4. Select an appropriate scale
with “Standard scale” or
“Custom scale”.
4
3
Exercise
3. Edit a title block
1. Double click on a text in template area.
2. Fill up the attributes.
2
Exercise
4. Plotting
1. Go to menu bar, click
File >> plot
2. Complete the following plot dialogue box.
Exercise