Apply mathematical formulas to engineering drawings.

Application of formulas may be used to

  • determine dimensions by parametric constraints
  • determine the scale of a drawing
  • convert unit systems
  • determine the depth of threads of a fastener and the pitch of a threaded fastener
  • calculate true length and width of an inclined or oblique plane
  • calculate gear ratios and the number of teeth on a gear.

Process/Skill Questions: 

  • What is the definition of parameter?
  • How might a spreadsheet be used to link parameters to an engineered part drawing?
  • What are the factors to consider when choosing a scale of a drawing?
  • How are auxiliary views and revolutions used to show the true length and width of inclined and oblique planes?
  • How is the number of teeth on a gear related to the gear ratio?
  • How can you solve to find a missing angle?
  • How can you find the hypotenuse of a triangle?