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Geometric Construction Tools

Geometric Construction Tools. Assignment D6. Curves and Profiles. CURVES include lines and arcs A PROFILE is a closed region made up of curves When you have trouble with a sketch that you can’t extrude, it’s because it isn’t a complete profile. DO 1. Start a new METRIC part

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Geometric Construction Tools

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  1. Geometric Construction Tools Assignment D6

  2. Curves and Profiles • CURVESinclude lines and arcs • A PROFILE is a closed region made up of curves • When you have trouble with a sketch that you can’t extrude, it’s because it isn’t a complete profile

  3. DO 1 • Start a new METRIC part • Turn visibility on • Make a new sketch on the XY plane • Make sure the cube in the top right is flipped right side up

  4. Do 2 • We are going to draw this in a very specific way. • The exact placement doesn’t matter • But it’s location in reference to the XY axes does matter • Don’t worry about measurement now • Start in the top left quadrent, and draw the shape shown. Make sure the points wind up in the correct quadrant.

  5. Do 3 • Add a CENTER POINT CIRCLE that is in quadrant one of Arbitrary Size • Arbitrary Size = Size doesn’t matter

  6. Do 4 • Add a line that is Coincident to the circle - See the how the coincident box pops up on my drawing? • It should also be coincident to the bottom line

  7. Do 5 • Edit Sketch by dragging the CENTER POINT of circle up and to the right. • The circle will automatically change size because it need to keep constrained to the diagonal line

  8. Do 6 • Drag the lines and points of your sketch around so that it looks approximately like mine • You can move lines by click on them • End points can also be moved • For the circle you can move the edge and the center point

  9. Do 7 • We are going to add a couple constraints • The first is a measurement constraint, DO NOT CHANGE THE NUMBER YOU GET • This is still a rough sketch

  10. Do 8 • Add a tangent constraint between the circle and the diagonal line

  11. Do 9 • Trim and Extend are used to the shorten/lengthen an object. This will help you make profiles. • Use extend to bring the top line over to the circle

  12. Do 10 • Use TRIM to lop off the extra in the bottom right corner

  13. Do 11 • Add a vertical dimension between the center of the circle and the top line. • Change the dimension to 0 so they are aligned

  14. Do 12 • Add the dimensions shown, again, don’t worry about the size, just the fact that they exist • Trim the circle

  15. Do 13 • Add the four 2mm fillets shown

  16. Do 14 • Add a fix constraint to the center of the arc, once you add this your drawing will be fully constrained

  17. Do 15 • Change the measurements to the ones shown • Since the drawing is fully constrained, it shouldn’t get all weird when you finish changing them

  18. Do 16 • Finish the sketch • Extrude it 5mm

  19. Do 17 • Create a new sketch on the front surface of the shape.

  20. Do 18 • Click offset, then click the edge of the shape and move your mouse towards the center of the object

  21. Do 19 • Add a dimension between the original and the offset profile and set it to 15

  22. Do 20 • Finish the sketch • Cut out the interior • And your done, save your work as • D6-Gasket • You have 3 exercises to go with this assignment, ask me for them

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