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mec222:assignments:assignment_8

Assignment 8

  1. Visualisation Exercise 3.
    Download this PDF file, and answer the questions on all 4 pages.
  2. For Figure 5.122, items (7) and (12), on page 294, sketch the developments of the shapes shown.
    Do not re-draw the isometric itself from the text.
    Mark the shape that is the base (bottom face) with the word “BASE”.
    • NOTE: A development is considered a proper drawing, so remember to follow the drawing rules.
  3. Figure 11.69, page 629, use solidworks to create a set of working drawings, using section views and auxiliary views as appropriate.
    • You may put more than one part on each page, so long as the drawings are nicely arranged and clearly legible.
    • Dimension all drawings.
    • For the 5/8“ socket head shoulder screw, the bushing, and the hole in the left plate, calculate the tightest fit and maximum clearance given the tolerances specified.
      • Assume all tolerance calculations are on a hole basis.
      • Submit the tolerance calculations on a separate page, which can be lined and on which you must use indelible ink.
    • Corrections:
      • The thickness of the washer is not given. Use any reasonable dimension based on a visual inspection of the washer's proportions compared to other parts.
      • Assume the bushing is an “off the shelf” part.
      • The O.D. of the WHEEL HUB WIDTH should be 1.00”, not 0.75“ as given in the textbook.

For extra practice:

  1. For Figure 5.122, items (1), (2), and (8), on page 294, sketch the developments of the shapes shown.
    Do not re-draw the isometric itself from the text.
  2. Figure 11.73, page 637-639, use solidworks to create a set of working drawings, using section views and auxiliary views as appropriate.
    • You may put more than one part on each page, so long as the drawings are nicely arranged and clearly legible.
    • Construction lines are not required.
    • Fully dimension all the parts.
    • Part drawings for the bolts and the spring are not necessary, but their location on the assembly drawings and their details in the bill of materials must be present.
    • Note the following corrections:
      • For the Part Valve Top the chamfer is 3mm in size.
      • The BOM lists 3 parts of type Weld Ring and 2 parts of type Weld Ring 2. However, the assembly has only 2 of the former and 1 of the latter. Consider this a “bug” in the BOM as given in the textbook.

Solutions for the extra problems are available here.

mec222/assignments/assignment_8.txt · Last modified: 2020.03.12 13:30 (external edit)