Upload
others
View
4
Download
0
Embed Size (px)
Citation preview
CREATING AN ARC AND ELLIPSE
BASIC CAD DRAW COMMANDS
Objectives: • Define an Arc
• Identify the different options in creating the arcs and ellipse.
• Draw simple to complex design.
• Develop the creativity and resourcefulness in creating complex design.
7/21/2018 Page 2
Radius command
7/21/2018 Page 3
Radius – is the distance from the center of the circle to the outside edge.
Diameter command
7/21/2018 Page 4
Diameter – is the longest distance across a circle.
ARC command
7/21/2018 Page 5
Arc – is a segment of the circumference of the circle.
ARC command - To create an arc, you can
specify various combinations of center, endpoint, start point, radius, angle, chord length, and direction values.
7/21/2018 Page 6
ARC COMMAND
7/21/2018 Page 7
HOW TO USE COMMAND ARC IN AUTOCAD.MP4 VIDEO
ARC COMMAND
HANDS – ON EXERCISES
7/21/2018 Page 8
ARC command
1. Locate and left-click on the Arc icon in the Draw toolbar.
2. Specify a start point near the center of the drawing area. Then click two
Material more places on the drawing area and observe how the arc is created. This is
a 3-point method, similar to the 3P option in the Circle command.
7/21/2018 Page 9
ARC command
7/21/2018 Page 10
4. Try the arc center method. The important thing to consider here
is that AutoCAD creates arcs counter-clockwise. Left-click on the Arc icon
and enter “c” at the command prompt followed by the Enter key.
5. Once more, position the crosshairs in the center of the screen and left click.
ARC command
6. For the start point of the arc, left-click to the right of the center point you just
material defined in step 4. For the end point move the crosshairs to the left of the center point and left-click. Note how the arc “sweeps” counterclockwise, over
the top of the center point.
7/21/2018 Page 11
ARC command
7/21/2018 Page 12
ARC command
7. On your own, create another arc opposite of the first one using the center
option, so your drawing area looks like this:
7/21/2018 Page 13
ARC command
7/21/2018 Page 14
8. Try the continue arc method. Create a small, Open arc in the lower left-hand corner of the screen using the three point (default) option. 9. After specifying the last point, press the spacebar on your computer keyboard twice. What happens?
ARC command
7/21/2018 Page 15
10. The Arc command should start again and pick up where you left off, tangent to the last arc. Continue this method until you create a drawing similar to the diagram below.
7/21/2018 Page 17
References: CAD video tutorial.com www.google.com AutoCAD 2009 by AUTODESK