Category Archives: DDP

Onshape Practice

 

 

Step 1) Make sure you’re workspace units are millimeters

Step 2) Create a 3 point arc. Dimensioned to a radiu of 30, then add a vertical line:

3 point arc w line

 

Step 3) Dimension the vertical line:

dimensioned-line

 

Step 4) Use the spline tool to create this :

spline tool

Step 5)  Add 2 circles and dimension both of them to 12 (smaller ) and 50 (outer) as shown below:

2 circles-dimensioned

 

Step 6)

Hexagon in onshpae

 

Step 1) Use the polygon tool to make a pentagon (5 sides)

Click to enlarge

Step 2) Dimension the side to 25

dimension pentagon

 

Step 3)  Add a point then use the midpoint constraint on it

point then midpoint

Step 4) Draw a construction line to the midpoint

construction line to midpoint

Step 5)  Use the cut tool to remove half the polygon

half poly

Step 6)  Add 2 lines

added

Triangle Mirrored and Inscribed

Do Now

left-side-triangle

Step 1) Create the right triangle above. The hypotenuse dimensioned to 30, the vertical altitude is a construction line and the the other leg is dimensioned to 21.

 

mirror over construction

Step 2) Mirror the triangle over the construction line

Result :

result of mirror

Step 3)  Circumscribe circle that is dimensioned to 42

Final result:

circumbscribe circle

 

 

Complex Shape 1 with Arcs and Constraints

  1. Use the front plane and the make a 3 point arc centered at the origin 3 point arc
  2.  Picture:screenshot.1
  3.  Use the dimension tool   to set the radius to 20 mm : dimension the arc
  4. Resulting shape : screenshot.2
  5.  create 2 lines that are attached to the circle and that meet at a point outside the circle. Dimensions don’t matter, yet, for these. Your document should look similar to (does not have to be exact
  6. : two secant lines
  7.  Use the Tangent tool to make both lines tangent . You must select both the circle and the line as shown below:2 tangents
  8.   Create a construction line from the end points of the arc:

    construction line-diameter

    Click to enlarge image

  9. Create a Rectangle, as shown in the video below. Watch the end carefully for how to make the points coincident. Your interconnected shape should move as shown below:rectnagle w coincident points
  10.  Use the Dimension tool to make sure that the height of the rect is 65 MM :

    Click to enlarge image

    Click to enlarge image

  11. Add a midpoint to the bottom of the rectangle:Click to enlarge
  12. Make a Circle centered at that midpointbottom center
  13. Dimension the bottom circle so that its diameter is 35 : dimension bottom circle
  14.  As you can see only the top tangent line is blue. So that’s the last item to dimension! Dimension it to 42 :
  15. top is 42
  16. Use the trim tool to remove the top half of the circle and its diameter line:trim interior
  17. Now your turn. In the same document. Create a complex separate shape. This shape should include a minimum of 5 simple shapes. 1 of the shapes must be an arc or a semicircle. All of the shapes must be dimensioned.