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A step-by-step guide for university students to create rounded rectangles using AutoCAD. The exercise covers drawing lines, finding the middle of sides, creating gaps, drawing arcs, using the FILLET command, and mirroring shapes. Students will learn how to use various AutoCAD commands to create the desired figure.
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In this exercise we will have a step by step demonstration on how to use AutoCAD command to obtain the figure below.
We will start by drawing a rectangle with the following dimensions.
You should be able to find the middle of each side, so create a gap of 100 and 60 cantered at the middle of each side. And draw a line perpendicular of 20 of length. The line will help draw arcs since will need 3 points to draw each of our arcs. You also need to draw a diagonal, this will serve to draw the circle, we need to be able to draw a circle cantered right at the centre of our rectangle. Here we can draw our circle with no hassle using the diagonal of the rectangle, and we are sure the circle is at its right place.
You can try using this technique to find the starting point of the triangle we are trying to draw. But if you are not able to follow this, you can simply draw lines, use them, and delete them when you are done with them.
Now we need to get those rounded shapes of radius 10 on each edge of the rectangle we have just drawn. Use the FILLET command. To use the FILLET command:
You should obtain this.
Now use the MIRROR command to obtain the rectangle on the right, since it is a symmetry of the figure we have just drawn. Use the centre of the circle as centre of the symmetry.
