1. Sectional Views Feel free to share this slide with your friends

2. A-A Cutting –plane line Projection direction Name A A

3. A A

5. A A Section A-A

6. Example 1 front view ->full section? A B C D

7. Example 2 front view ->full section?

8. HALF SECTION

10. ALIGNED SECTION

11. ALIGNED SECTION

12. ALIGNED SECTION

13. ALIGNED SECTION

14. OFFSET SECTION

15. OFFSET SECTION

16. OFFSET SECTION

17. REVOLVED SECTION Only sketch section surface

18. REVOLVED SECTION Only sketch section surface

19. REMOVED SECTION

20. REMOVED SECTION Only sketch section surface

21. A A FULL SECTION (Rib)

22. FULL SECTION Hidden lines omitted

23. FULL SECTION

24. Hidden lines omitted FULL SECTION

25. FULL SECTION

26. Hidden lines omitted FULL SECTION

27. HALF SECTION Hidden lines omitted

28. HALF SECTION

29. HALF SECTION Hidden lines omitted

30. BROKEN-OUT SECTION

31. Hidden lines omitted

32. Hidden lines omitted

33. Section lines-thin!! Contour,45 Center line ,45 Contour,45 Center line,45 attention

34. line No line attention

35. attention Hidden line should be omitted!!!

36. model views 2.half sections

37. top bottom 2.half sections

38. Cutting plane remove 2.half sections

39. direction Half section Half section symmetry 2.half sections

40. symmetry label 2.half sections hidden ？

41. Notice: the direction of section lines 2.half sections

42. 2.half sections example

43. External Short break lines (thick) model 3.Broken-out sections

44. model Section plane ？ 3.Broken-out sections example

45. 模型 Cutting position Name 3.Broken-out sections label

46. false false false false 3.Broken-out sections attention

47. Two intersecting planes Move away A A A A-A label 4.aligned sections

48. 4.aligned sections

49. 5.offset sections position

50. 5.offset sections

51. Section plane A A A-A B B 6.inclined sections

52. 7.revolved sections

53. 8.removed sections A A A-A

54. 8.removed sections

55. 9. Ribs in sections To avoid a false impression of thickness and solidity, ribs, webs, gear teeth , and other similar flat features are not sectioned even though the cutting plane passes along the center plane of the feature.

56. ribs

57. …… ..Cutting plane passes along the center plane of the feature.

58. Ribs in sections Vertical section

59. Ribs in sections

60. To shorten a view of an elongated object, conventional breaks are recommended

61. Space is limited & object is symmetry == partial views 1/2 1/2 1/4