[理学]05Chapter3-Solids and Their Intersections2.ppt

Exercise 6: Draw the left side view. The point divided continuous and dashed Exercise 6: Draw the left side view. Exercise 7: Complete the left-side view. 1‘(2’) 2 1 2’’ 1’’ 3(4) 1(2) 1’(3’) 2’(4’) 3’’ 1’’ 4’’ 2’’ 5’(6’) 7’(8’) 6(8) 5(7) 5’’ 6’’ 7’’ 8’’ Exercise 8: Complete the left-side view. Exercise 9: Complete the left-side view. 1’(2’) 1’’ 2’’ 3’(4’) 5’(6’) 4 3 6 5 6’’ 5’’ 4’’ 3’’ * Company name LOGO Chapter 03 Solids and Their IntersectionsⅡ Presented by YANG Zhi-Liing Projection of Curved Solids Three-view drawing of circular sphere Red circle is the limiting element for the top view. Blue circle is the limiting element for the frontal view. Purple circle is the limiting element for the left-side view. Projection of Curved Solids Getting points on the surfaces of a circular sphere Step 1: To find the location of the point. Point A is on the lower limiting element for V-plane. Point B is on the front limiting element for W-plane. Point C is on the rear limiting element fro H-plane. Point D is on the left limiting element for H-plane. Point E is on the right limiting element for V-pane. (A) B (C) D (E) Projection of Curved Solids Getting points on the surfaces of a circular sphere Step 2: To find other two projection of the point. (a) a” b” b c (c”) d d’ e’ (e) Projection of Curved Solids Getting points on the surfaces of a circular sphere Step 1: To find the location of the point. Point F is on the right, upper, rear of the sphere. Point G is on the left, lower, foreside of the sphere. Point H is on the left, upper, foreside of the sphere. Projection of Curved Solids Getting points on the surfaces of a circular sphere Step 2: To find other two projection of the point. (Auxiliary horizontal circle) f (f”) g’ g” h h’ Projection of Curved Solids Getting points on the surfaces of a circular sphere Second method: Auxiliary frontal circle g’ g” Projection of Curved Solids Getting points on the surfaces of a circular sphere Third method: Auxiliar