MAE%201004_Lecture%2009%20Chapter_7_vugph%20-%20Spring%202011%20%5bCompatibility%20Mode%5d

MAE%201004_Lecture%2009%20Chapter_7_vugph%20-%20Spring%202011%20%5bCompatibility%20Mode%5d

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Unformatted text preview: MAE 1004 MAE 1004 HW #3 due Wed. 2/16) in class at 3:45 pm HW #3 due Wed. (2/16) in class at 3:45 pm Before 3:47 pm. After 3:47 pm, a note is needed … CAD Exam #1 Next week – the week of Feb. 21 – in your lab section Today’s topics Chapter 7 Multiview Projection [1] The ‘miter line’ lecture 2/14/2011 1 HW #3 due Wed. (2/16) in class at 3:45 pm Do not include the dimensions (you need to count count the grids accurately) Check that all necessary lines are included; are compare views; check line qualities – use the right pencils Use Prof. Shen’s office hours (1:30-3:00 pm, (1:30Tue Thurs Tue. & Thurs.) Where h to buy the pencils (H and B)? 2 CAD CAD Exam #1 Week of Feb. 21 – in your registered lab session Be punctual; no show = 0 Open book exam – you can use the AutoCAD textbook in the exam; no borrowing in the exam; no borrowing – use your own textbook your own textbook If you have questions - use TA’s office hours (Tue. 1:301:30-3:30 pm & Thurs. 2-4 pm in Tompkins 410) 2- Midterm Exam March March 2 (Wed.) – in class (3:45 pm~4:35 pm) (Wed in class (3:45 pm pm) Final Exam May 4 (Wed.), 5:20 – 7:20 pm, Duques 151 (W 151 3 MAE MAE 4 Engineering Drawing and Engineering Drawing and Computer Computer Graphics Chapter 7 Multiview Projection 4 Third An Third Angle Projection (the method used in the US) Pr (th in th US) 5 6 7 Study the views and develop a system 8 2 6 4 3 1 5 Study the views and develop a system 9 Study the views and develop a system 10 11 * Use ruler to draw construction lines – vertical and horizontal – to correlate the same feature in different views (front-top views or front-RS views) 12 •Use ruler to ‘draw’ – vertical and horizontal – ‘d construction lines to correlate the same feature in different views (front different views (front-top views or front-RS views). views or front views) •Good habit to read/analyze multiview drawings. 13 Visualize the multiview drawing of the object Visualize the multiview drawing of the object Consider the front view and the top view Consider the front view and the top view 1. the primary visible lines 14 Consider the front view and the top view - on the primary visible lines 15 How about the secondary visible lines? 1. In the front view. 2. In the top view. 16 How about the hidden lines? 1. Any hidden lines in the top view? hidden lines in the top view? 2. Hidden lines in the front view? 17 How about the center lines? 1. Any center lines in the top view? center lines in the top view? 2. Center lines in the front view? 18 Included all (1) visible lines, (2) hidden lines, and (3) center lines? 19 Included all (1) visible lines, (2) hidden lines, and (3) center lines? 20 Included all (1) visible lines, (2) hidden lines, and (3) center lines? 21 Use Miter line as shown in (c) Use Miter line, as shown in (c) 22 Use the 45 deg. Miter line – linking top view and right-side view. How to draw the Miter line? th Mit li Use the square in the 4 rectangles, draw the diagonal line (45 deg.) 23 Visualize the multiview drawing of the object Visualize the multiview drawing of the object Develop the front view, the top view, and the right side view – primary visible lines 24 1. Primary visible lines 2. Secondary visible lines (front, RS, top) 3. Hidden lines (front, RS, top) 4. Center lines (top, front, RS) li (t RS) 25 26 27 Need all three views? Need the miter line? 28 Practice Practice Draw three views (front, top, and right-side views) of the three top and object object shown below (3 views on one graph paper) Front View View One large grid equals to two small grids The position of the three views should be correct position Use the shown Front View definition Use graph paper (from Blackboard or your own) 29 6 4 width depth 7 height 2 3 2 2 8 2 Draw front, top, and right-side views 14 Three views on one graph paper Front View Front View Use ruler to draw lines; use free hand sketching to draw circles 6 3 On the problems in Fig. 6.52: one large grid equals to two small grids. Count the number of grids of each feature to determine its size/location – you should use ruler to help with the measurements. Diameter of the hole = 2 (small grids) Drawing construction lines first; do not erase them Must show all visible lines, hidden lines, and centerlines properly li hidd li 30 Use graph paper & follow the steps to sketch the required 3 views for each object. I: draw the ‘4 rectangles’ using construction lines (counting grids, align views); II II: draw ‘primary’ visible lines as construction lines (visualize the views); li li th III & IV: draw “secondary” (more detailed) visible lines with construction lines and then include hidden lines and centerlines as construction lines; V: finalize the three views with ‘real’ visible lines, ‘real’ hidden lines, and ‘real’ th th li li centerlines – must use the “right pencils” to finalize the lines. 31 1. Primary visible lines 2. Secondary visible lines 3. Hidden lines 4. Center lines li Front View 32 ...
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