ACAD Drawings
The program autoCAD is a basic drawing program that uses the basic grid style to have the user draw designs by stating what needs to be drawn where.With this program you can draw straight lines, circles, triangles and even hexigons.
In these assignments, the user tells the program where to start the drawing and how to chart every turning point in between to draw simple shapes like circles, squares, and triangles. The stating of the points is the basic modeling techinque used for autoCAD.
Sports Car
Decription of assignment
With this assignment I learned how to use the basic modeling techinques in autoCAD to design a sports car. These modeling techniques included drawing straight lines and circles. I had to put in the correct cordinates on the grid so the computer would draw the nessary design on the program.
Airplane
Decription of assignment
With this assignment I learned how to use the basic modeling techinques in autoCAD to design an airplane, like using straight lines with the program automatically drawing the airplane from point to point.
Trim And Offset
Decription of assignment
With this assignment I practiced using the Trim and offset tools to create a square and an 'ever lasting knot'.
TRIM TOOL
The only function of the Trim tool is to shorten a line drawn on the layout (a grid given by the program) as long as the line is intersected by another line. This is done by selecting the line you want shortened. Then you hit enter to clarify that line is the line that will be shortend, then click on the intersecting line to shorten the line to the intersecting point. We can also choose multiple lines that we want shortened to the same length.
OFFSET TOOL
With the offset tool we can choose a line, state how for we want to offset a duplicate of the original line and the program will automatically offset the copy of the line. These lines can be vertical, horizantal, cicular, and diagonal, these are the lines that we have used so far in our drawings. If you offset a circle you will only make the circle bigger. The only reason why the circle gets bigger is because when you offset your moving all the points on the line to their new possitions, in which a circle has points all the way around.
Edit Command
Decription of assignment
With this assignment I practiced using the edit command to create a cirlce, and five different sized triangles that were all interconnected in some way. Eventhough we could start at various points in the drawing, I had to plan where I was going to start the drawing and where I was to draw from there. I first drew the outside lines, then the two diagonal lines to create the two main triangles. I then drew another two diagonal lines to create another two triangles. On the point where the two lines that I last drew met I drew a cirlce so I could draw the final two lines the complete the final triangle. While drawing the lines I stated where the line was to start and where to end. With the circle I had to state how big the radius was so the program would draw the proper sized circle.
ACAD Problems 1.3 (Cheese)
Description of Assignment
I first drew a large rectangle, then a cirlce in the bottom left hand corner. I had to trim away this corner as well as a section of the circle that exceded the rectangle. I then took the distance given for the 2nd left vertical length and drew the proper length in. I then offset the previous line to get the other side of the second rectangle. I then took the distance given that would appear between the second and third rectangle to get the exact distance. I drew the correct side length for the third rectangle. After I had the two small rectangles drawn I found the middle points of the lines and drew a circle that would link the two vertical parrallel lines together. Next I removed the top lines of the rectangles. I used the Trim tool to trim off the bottoms of the circles and drew the medium circle using the diameter given. I figured out the location of the top left small circle and drew it using the radius given. I then drew in two lines, one veritcal and the other horizontal. I offset the vertical line four times to find the locations of the other small circles. I erased the five vertical lines and the horizontal line.
ACAD Problems 1.6 (Gassket)
Description of Assignment
I started by drawing a large square (100 x 100) and then found the locations for the four small circles. I drew the small circles using the radius given. I then offset the circles to get the rounded corners to be part of the outside edge. I took two lines, one veritcal and the other horizontal, to find the location of the middle circle. I drew the middle circle using the diameter given. I then had to draw four more circles which were placed between corner circles. I removed all of the sraight lines and trimed the extra sections off the circles to complete the outside edge.
ACAD Problems 1.7 (Rounded Cross)
Description of Assignment
For the rounded cross I drew two middle intersecting straight lines, one vertical and the other horisantal. At the ends of the lines I drew were the locations of the circles. With the radius given I drew the four small circles. I used the offset tool on the small circles to get the outside edge curves. I drew lines conecting the outer circles in this fashion top to bottom and left to right. At the points where these lines crossed I drew four small circles using the radius given. I then trimed the excess parts of the lines and circles off to complete the outside edge. I then removed the original straight lines to complete the drawing of the cross.
Locator (Top, Side, and Front Views)
Description of Assignment
I learned a new way to draw a simple diagram. We had to first draw a grid that would give us the nessary size for the top and side view. I then offset the lines to the nessary spots on the grid. I used the trim too shorten the sides to the proper sizes. For the angled top I had to imput a length that was longer then needed at the angle given and then trim off the extra line. Once that was done I worked on getting the circular slot to the correct size using the radius given.
ACAD Problems 1.4 (Shield and Star)
Description of Assignment
First I drew a rectangle 5.5 mm by 4mm vertically on the grid. I then offset all four sides to the given locations. I worked on the left side of the shield from bottom to the top leaving the star for last. I drew the angled lines to the angles provided but making the lengths longer because the length was not given. The lines that were unneeded were removed and exess lengths were trimmed. To draw the star, start by offsetting the right hand line to the required distances for the points of the star. Draw lines using the intersects of the offset lines to get the required angles. Now use the mirror tool to complete the right side of the shield.
ACAD Problems 1.1 (Connector)
Description of Assignment
This was the starter drawing and the easiest to draw since all you had to do was state the points for the lines to start and where to end.
ACAD Problem 1.2
Description of Assignment
With this drawing I learned how to draw circles using offset lines to fin the center points.
ACAD Problem 1.5 (Templar Sheild)
Description of Assignment
This drawing was harder then the one before it because you had lines at angles and the center stars. I had to use the Ortho tool to get the lines to go to the specified angles.
ACAD Problem 1.8 (Round Gasket)
Description of Assignment
With this drawing I learned how to use the trim tool to trim sections of circles away.
ACAD Problem 1.9 (Dyn-amite)
Description of Assignment
With this drawing I had to use the Ortho tool to get the line to the specified angles and lengths. I had to use a calculator to get the correct angles to get the drawing to come out correctly.
These next few drawings were not assigned but I did them to enhance my learning experiance in AutoCAD.
ACAD Problem 2.7
Perspective Drawing types
1 Vanishing PointPerspective drawing is a good style to use when drawing in 3D. There are different styles including single point and two point perspective. The basic example below shows how to construct a simple single point perspective drawing of a cube. Using the same skills more complex drawings/designs can be drawn, after a little practice.
2 Vanishing Points
Perspective is a realistic way of drawing objects in 3D. We have already looked at single point perspective, two point perspective using two vanishing points and when an object is drawn in this way it is even more realistic than if it were to be drawn with a single vanishing point.
