Foundations of Technology Sketching and Technical Drawing STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 Foundations of Technology Sketching and Technical Drawing TITLE SLIDE Teacher Resource – Unit 2 Lesson 5 © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc
STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 The BIG Idea Big Idea: At various intervals of the Engineering Design Process, conceptual, mathematical, and physical models are used to evaluate the design solution. [Authors: Please include teacher notes appropriately.] © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc
STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 Annotated Sketches Annotated Sketches are sketches that include notes or labels, dimensions, and/or symbols. Sketches are often used to show an idea or visibly capture a thought. All sketches should include some type of annotation. [Authors: Please include teacher notes appropriately.] © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc
STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 Annotated Sketches Sketching takes practice, but there are some basics to remember: Use long, light, and flowing lines rather than heavy or short lines. Sketches are a loose representation of the idea; accuracy is not critical. Keep your sketches quick; include enough detail to get your idea across. Use basic shapes to frame the sketch, then add more detail. [Authors: Please include teacher notes appropriately.] © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc
STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 Technical Drawings Technical drawing is a visual communication language that is used to communicate how something works or is constructed. All technical drawings include: Standard symbols Units of measurement [Authors: Please include teacher notes appropriately.] © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc
STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 Technical Drawings Technical Drawings can be produced using paper and pencil or on a computer using computer-aided design (CAD). We will use two basics types of technical drawings: Orthographic projection Isometric projection [Authors: Please include teacher notes appropriately.] © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc
STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 Technical Drawings Orthographic projection is a way to represent a three- dimensional object in two dimensions. Typically, two or more elevations or pictures are produced to represent the entire object—known as multiview projection. [Authors: Please include teacher notes appropriately.] © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc
STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 Technical Drawings Orthographic projection typically displays the top, front, and ride side views of a three-dimensional object. Multiview Projection Top (yellow) Top Right Side (green) Right Side [Authors: Please include teacher notes appropriately.] Front Front (grey) © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc
STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 Technical Drawings Orthographic multiview projection has some basic terminology: Top Elevation Construction Lines (light) Hidden Lines (dashed) Part Outline (solid) [Authors: Please include teacher notes appropriately.] Dimensions (singular or stacked) Front Elevation Side Elevation © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc
STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 Technical Drawings Drawing orthographically will take practice, but there are some basics to remember: Use construction lines to frame out the work space. The distance between elevations are equal. Use construction lines to project details between the elevations. Construction Lines Top [Authors: Please include teacher notes appropriately.] Side Front Equal © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc
STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 Technical Drawings Drawing orthographically will take practice, but there are some basics to remember: A 45°-angle line can be drawn to help project between the top and side elevation. Darken the lines that represent the part. Do not erase construction lines. 45° Construction Line Top Finished Lines (darkened) Side [Authors: Please include teacher notes appropriately.] Front Construction Lines (light) © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc
STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 Technical Drawings Orthographic Drawing Practice 2 5 4 Depth = 4 Top Height = 5 6. Project points of interest using Construction Lines 1. Establish an Origin (staring point) 2. Frame out the work space with Construction Lines – total height, width and depth, leaving equal space between objects 7. Darken all finished lines for each view 4. Add a 45° line starting in the upper right hand corner – used to project details between the top and side views 3. Project the outline of the top, front and side views using Construction Lines 5. Add points of interest to the most descriptive view [Authors: Please include teacher notes appropriately.] Side Front Width = 4 Depth = 4 © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc
STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 Technical Drawings Isometric projection is a simple way to show a three-dimensional object. By using isometric projection, three sides of an object are shown proportionally. All vertical lines are drawn vertically, and all horizontal lines are drawn at an angle of 30° degrees. [Authors: Please include teacher notes appropriately.] © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc
STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 Technical Drawings Drawing isometrically will take practice, but there are some basics to remember: Use construction lines to frame out the work space. Use construction lines to project details on surfaces. Use accurate measurements on all surfaces. [Authors: Please include teacher notes appropriately.] © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc
STEMCenter for Teaching & Learning™ Engineering byDesign™ 12/01/2009 Technical Drawings Isometric Drawing Practice 2 5 4 Height = 5 6. Darken all finished lines 1. Establish and origin (starting point) 2. Frame out the work space with Construction Lines – total height, width and depth 5. Additional points of interest can now be identified – project those points using Construction Lines 3. Add points of interest to the most descriptive view(s) 4. Project points of interest using Construction Lines [Authors: Please include teacher notes appropriately.] Depth= 4 Width= 4 © 2013 International Technology and Engineering Educators Association STEMCenter for Teaching and Learning™ Foundations of Technology © International Technology Education Assoc